Note: Descriptions are shown in the official language in which they were submitted.
CA 02557825 2003-03-20
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INK CARTRIDGE AND INK CARTRIDGE HOLDER
The present application is a divisional application of
parent Canadian Patent Application Serial Number 2,422,857,
filed March 20, 2003.
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to an ink cartridge and an
ink cartridge holder. More particularly, the present
invention relates to the ink cartridge for supplying ink to a
recording apparatus, and the ink cartridge holder for holding
the ink cartridge.
Description of Related Art
There has been known an ink jet recording apparatus
including an ink cartridge holder on which an ink cartridge
filled with ink is detachably mounted and for supplying the
ink to the ink jet recording apparatus is known. A large-
size ink cartridge is used for the ink jet recording
apparatus which records on large-size papers, such as
posters, in order to cope with a large quantity of ink
consumption.
The ink cartridge used for the ink jet recording
apparatus may be provided with an IC chip which stores
information, such as a type of ink, color of ink, remaining
amount of ink and the like. An information reading section
is provided on the ink cartridge holder at a position facing
the IC chip when the ink cartridge is mounted on the ink
cartridge holder, and the IC chip on the ink cartridge and
CA 02557825 2003-03-20
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the information reading section on the ink cartridge holder
are electrically connected and communicate with each other.
However, there is variation in the ink cartridge holder,
the ink cartridge, their components and assembly of these
components. When the relative position between the IC chip
on the ink cartridge and the reading section on the ink
cartridge holder deviates, the electric connection between
them comes to fail and it causes communication error or
interruption between them. In particular, when the size of
the ink cartridge is large, the magnitude of the gap of the
relative position between the IC chip and the reading section
due to the product variation tends to become large.
Moreover, in order to mount the ink cartridge on the ink
cartridge holder easily, there may be clearance in the ink
cartridge holder. It is preferable to provide larger
clearance in the ink cartridge holder for the large size ink
cartridge. However, in this case, looseness due to the
clearance may cause the gap of the relative position between
the IC chip and the reading section, as mentioned above.
Therefore, it is highly likely that the communication
interruption between them will occur.
SUMMARY OF THE INVENTION
Therefore, it is an object of the present invention to
provide an ink cartridge and an ink cartridge holder which
can solve the foregoing problems. The above and other
objects can be achieved by combinations described in the
independent claims. The dependent claims define further
advantageous and exemplary combinations of the present
invention.
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According to the first aspect of the present invention,
there is provided an ink cartridge for supplying ink to a
recording apparatus. The ink cartridge includes: an ink
cartridge main body for containing ink therein; a connection
electrode section provided on a part of a first wall of the
ink cartridge main body and including connection terminals
electrically connected to a memory element; an ink supply
section provided in a front wall which intersects the first
wall; and a positioning section for guiding the ink cartridge
along a positioning member of the recording apparatus located
in the vicinity of the connection electrodes on the front
wall so that the positioning member opposes to the connection
electrode section in the direction parallel with the
connection electrode section.
In the ink cartridge, the connection electrode section
is located in a recessed portion of the first wall.
In the ink cartridge, a center axis of the positioning
section lies within a width of the connection electrode
section.
In the ink cartridge, the center axis of the positioning
section, extending in the direction parallel to the first
wall and the surface perpendicular to the cartridge insertion
direction, is substantially aligned with a centerline of the
connection electrode section extending in the direction
parallel to the first wall and the surface perpendicular to
the cartridge insertion direction.
The ink cartridge may further include a substantially
elliptical sub-positioning section, a center axis the sub-
CA 02557825 2003-03-20
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positioning section and said center axis of the positioning
section both lying in a plane which is substantially parallel
to the first wall, wherein a major axis of the sub-
positioning section extends in the direction parallel to the
first wall and intersects the second wall perpendicular to
the cartridge insertion direction.
In the ink cartridge, a distance between the front
surface and a top surface of the positioning section may be
longer than a distance between the front surface and a top
surface of the sub-positioning section.
The ink cartridge may further include a projecting
member disposed on a second wall which intersects the first
wall of the ink cartridge main body.
In the ink cartridge, viewed in a direction
perpendicular to the second wall, the projection overlaps a
portion of at least one of the connection electrode section
and the positioning section.
The ink cartridge further includes a grip section formed
at an end of the ink cartridge opposite to the front wall.
In the ink cartridge, the grip section includes a
concave portion.
According to the second aspect of the present invention,
there is provided an ink cartridge holder that receives an
ink cartridge, where the ink cartridge is detachably mounted,
where the ink cartridge has a connection electrode section
for an information storing unit located on a part of a first
wall, and has an ink supply section located on a front wall
CA 02557825 2003-03-20
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which intersects the first wall. The ink cartridge holder
includes: a holder main body including an opening through
which the ink cartridge is inserted, the front wall first,
said holder main body holding the ink cartridge; an
5 information reading section including a connection electrode
section within the holder main body, the information reading
section being provided in a position corresponding to the
connection electrode section of the information storing unit
of the ink cartridge so that, when the ink cartridge is
mounted, the connection electrode section of the information
reading section is in electrical contact with the connection
electrode section of the ink cartridge; and a positioning
member extending from the holder main body toward the opening
face, and positioned in the vicinity of the information
reading section in a direction parallel with the first wall
and with the front wall of the ink cartridge so that, viewed
in a direction perpendicular to a plane in which the first
wall of the ink cartridge lies, when the ink cartridge is
mounted, at least a portion of the positioning member
overlaps at least a portion of the information reading
section of the ink cartridge.
In the ink cartridge holder, the positioning member may
include: a positioning member main body having a tapered end,
the positioning member main body being dimensioned and
disposed so that when the ink cartridge is held by the holder
main body, the positioning member main body is received by
the ink cartridge; and an abutting section including an
abutment surface which abuts against the ink cartridge when
the ink cartridge is held by the holder main body.
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In the ink cartridge holder, the abutting section has a
larger cross-sectional area than a cross-sectional area of
the positioning member main body.
In the ink cartridge holder, viewed in a direction
perpendicular to the first wall of a mounted ink cartridge, a
center axis of the positioning member main body lies within
the width of the connection electrode section of the
information reading section.
In the ink cartridge holder, the center axis of the
positioning member main body extending in a same direction as
the positioning member may be substantially aligned with a
centerline of the connection electrode section of the
information reading section extending in the direction
parallel to the first wall and intersecting the front wall of
the ink cartridge.
The ink cartridge holder may further include a sub-
positioning member extending from the holder main body toward
the opening face of the holder, the sub-positioning section
and the positioning member both lying in a plane which is
substantially parallel to the first wall, wherein the
distance between the connection electrode section of the
information reading section and the sub-positioning member is
longer than the distance between the connection electrode
section and the positioning member in a direction parallel to
the first wall and the front wall of the ink cartridge.
In the ink cartridge holder, a center axis of the
positioning member is parallel to a center axis of the sub-
positioning member.
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In the ink cartridge holder, the sub-positioning member
may include: a sub-positioning member main body with a
tapered end, the sub-positioning member main body being
dimensioned and disposed so that when the ink cartridge is
held by the holder main body, the sub-positioning member main
body is received by the ink cartridge; and an abutting
section with larger cross-sectional area than the sub-
positioning member main body including an abutment surface,
wherein a distance between the opening face and the abutment
surface of the abutting section of the sub-positioning member
is greater than a distance between the opening face and the
abutment surface of the abutting section of the positioning
member.
In the ink cartridge holder, the holder main body is
dimensioned so that there is at least clearance at least in
the direction parallel to the first wall and the front wall
of the ink cartridge during the mounting of the ink
cartridge.
The ink cartridge holder may further include an urging
section selectively pressing against the second wall which
intersects the first wall and the front wall of the ink
cartridge.
In the ink cartridge holder, the urging section has a
first position in which the ink cartridge can be inserted
into and removed from the holder main body, and a second
position in which the ink cartridge is restrained in the
holder main body.
In another aspect, the present invention resides in an
ink cartridge for supplying ink to a recording apparatus,
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comprising: an ink cartridge main body for containing ink
therein and comprising a first wall, and a front wall which
intersects said first wall; a connection electrode section
provided on a part
of said first wall of said ink cartridge main body and
including at least one connection electrode electrically
connected to a memory element; an ink supply section
provided in said front wall;
and a positioning section for guiding said ink cartridge
along a positioning member of the recording apparatus, said
positioning section guiding the positioning member of the
recording apparatus to face said connection electrode section
in a direction substantially in parallel to said connection
electrode section, wherein at least a portion of said
connection electrode section overlaps at least a portion of
said positioning section when viewed in a direction
substantially perpendicular to said first wall of said ink
cartridge main body.
In another aspect, the present invention resides in an
ink cartridge for supplying ink to a recording apparatus,
comprising: an ink cartridge main body for containing ink
therein and comprising a first wall, and a front wall which
intersects said first wall; a connection electrode section
provided on a part of said first wall of said ink cartridge
main body and including at least one connection electrode
electrically connected to a memory element; an ink supply
section provided in said front wall; and a positioning
section for guiding said ink cartridge along a positioning
member of the recording apparatus, said positioning section
guiding the positioning member of the recording apparatus to
face said connection electrode section in a direction
substantially in parallel to said connection electrode
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section, wherein said connection electrode section and said
positioning section are aligned in a direction substantially
perpendicular to said first wall of said ink cartridge main
body.
In another aspect, the present invention resides in an
ink cartridge for supplying ink to a recording apparatus,
comprising: an ink cartridge main body for containing ink
therein and comprising a first wall, and a front wall which
intersects said first wall; a connection electrode section
provided on a part of said first wall of said ink cartridge
main body and including at least one connection electrode
electrically connected to a memory element; an ink supply
section provided in said front wall; and a positioning
section for guiding said ink cartridge along a positioning
member of the recording apparatus, said positioning section
guiding the positioning member of the recording apparatus to
face said connection electrode section in a direction
substantially in parallel to said connection electrode
section, wherein, viewed in a direction perpendicular to the
first wail, a center axis of said positioning section lies
within a width of said connection electrode section.
In yet another aspect, the present invention resides in
an ink cartridge for supplying ink to a recording apparatus,
comprising: an ink cartridge main body for containing ink
therein and comprising a first wall, a front wall which
intersects said first wall, and a sub-positioning section
formed on said front wall, a center axis of said sub-
positioning section extending in a direction parallel to a
ink cartridge inserting direction, and said sub-positioning
section being substantially elliptical a major axis of which
extends in the direction perpendicular to the cartridge
CA 02557825 2003-03-20
insertion direction; a connection electrode section provided
on a part of said first wall of said ink cartridge main body
and including at least one connection electrode electrically
connected to a memory element; an ink supply section provided
5 in said front wall; and a positioning section for guiding
said ink cartridge along a positioning member of the
recording apparatus, said positioning section guiding the
positioning member of the recording apparatus to face said
connection electrode section in a direction substantially in
10 parallel to said connection electrode section.
In a further aspect, the present invention resides in an
ink cartridge holder that receives an ink cartridge, where
the ink cartridge is detachably mounted, where the ink
cartridge has a connection electrode section of an
information storing section located on a part of a first
wall, and has an ink supply section located on a front wall
which intersects the first wall, the ink cartridge holder
comprising: a holder main body including an opening face
through which the ink cartridge is inserted, the front
surface first, said holder main body holding the ink
cartridge; an information reading section including a
connection electrode section within said holder main body,
the information reading section being provided at a position
corresponding to the connection electrode section of the
information storing section of the ink cartridge so that,
when the ink cartridge is mounted, the connection electrode
section of the information reading section is in electrical
contact with the connection electrode section of the ink
cartridge; and a positioning member extending from said
holder main body toward said opening face, and positioned in
the vicinity of said information reading section in a
direction parallel with the first wall and the front wall of
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the ink cartridge so that, viewed in a direction
perpendicular to a plane in which the first wall of the ink
cartridge lies, when the ink cartridge is mounted, at least
a portion of the positioning member overlaps at least a
portion of the information reading section of the ink
cartridge holder.
In yet a further aspect, the present invention resides
in an ink cartridge holder that receives an ink cartridge,
where the ink cartridge is detachably mounted, where the ink
cartridge has a connection electrode section of an
information strong section located on a part of a first
wall, the ink cartridge holder comprising: a holder main
body including an opening face through which the ink
cartridge is inserted, the front surface first, said holder
main body holding the ink cartridge; an information reading
section including a connection electrode section within said
holder main body, the information reading section being
provided at a position corresponding to the connection
electrode section of the information storing section of the
ink cartridge so that, when the ink cartridge is mounted,
the connection electrode section of the information reading
section is in electrical contact with the connection
electrode section of the ink cartridge; and a positioning
member extending from said holder main body toward said
opening face, and positioned in the vicinity of said
information reading section in a direction parallel with the
first wall and the front wall of the ink cartridge so that,
viewed in a direction perpendicular to a plane in which the
first wall of the ink cartridge lies, when the ink cartridge
is mounted, at least a portion of the positioning member
faces at least a portion of the information reading section
of the ink cartridge holder.
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In a further aspect, the present invention resides in
an ink cartridge detachably mountable on an ink jet recording
apparatus having a print head, comprising: a housing
containing ink therein and comprising a top wall, a first
wall facing frontward with respect to a cartridge insertion
direction and perpendicular to said top wall, a second wall
arranged generally parallel to the cartridge insertion
direction and intersecting said top wall and said first wall;
an ink supply section disposed on said first wall for
supplying ink in said housing to the print head; a projection
formed on said second wall which is engageable with the
recording apparatus, said projection being formed at a
position such that said projection is biased by a part of the
recording apparatus when the ink cartridge is mounted in the
recoding apparatus; and a connection electrode electrically
connecting to an information storing unit for storing
information electrically, said connection electrode being
disposed at a position close to said second wall on which
said projection is formed.
In a further aspect, the present invention resides in
an ink cartridge detachably mountable on an ink jet recording
apparatus having a print head, comprising: a housing
containing ink therein and comprising a top wall, a first
wall facing frontward with respect to a cartridge insertion
direction and perpendicular to said top wall, a second wall
arranged generally parallel to the cartridge insertion
direction and intersecting said top wall and said first wall;
an ink supply section disposed on said first wall for
supplying ink in said housing to the print head; a projection
formed on said second wall, said projection being formed at a
position where said projection is biased by a part of the
recording apparatus when the ink cartridge is mounted in the
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recoding apparatus, said projection comprising a first part
closer to said first wall and a second part farther from said
first wall, said second part being engageable with a part of
the recording apparatus; and a connection electrode
electrically connecting to an information storing unit for
storing information electrically, said connection electrode
being disposed at a position close to said second wall on
which said projection is formed.
In a further aspect, the present invention resides in
an ink cartridge detachably mountable on an ink jet recording
apparatus having a print head and a plurality of connection
electrodes, comprising: a housing containing ink therein and
comprising a top wall, a first wall facing frontward with
respect to a cartridge insertion direction and perpendicular
to said top wall, a second wall arranged generally parallel
to the cartridge insertion direction and intersecting said
top wall and said first wall; an ink supply section disposed
on said first wall for supplying ink in said housing to the
print head; a projection formed on said second wall which is
engageable with a part of the recording apparatus, said
projection being formed at a position such that said
projection is biased by a part of the recording apparatus
when the ink cartridge is mounted in the recording apparatus;
and a plurality of connection terminals respectively
electrically connectable to the connection electrodes of the
recording apparatus, said connection terminals being disposed
at a position close to said second wall on which said
projection is formed.
In a further aspect, the present invention resides in
an ink cartridge detachably mountable on an ink jet recording
apparatus having a print head, comprising: a housing
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containing ink therein and comprising a top wall, a first
wall facing frontward with respect to a cartridge insertion
direction and perpendicular to said top wall, and a second
wall arranged generally in parallel to the cartridge
insertion direction and intersecting said top wall and said
first wall; an ink supply section disposed on said first wall
for supplying ink in said housing to the print head; an
engagement portion formed on said second wall and which is
engageable with the recoding apparatus, said engagement
portion being formed at a position where said engagement
portion is biased by a part of the recording apparatus when
the ink cartridge is mounted in the recording apparatus, said
engagement portion including a section that is a part of said
second wall, said section being shaped and positioned so that
when the ink cartridge is mounted in the recording apparatus
only said section is pushed by the recording apparatus to
urge the ink cartridge in a direction; and a connection
electrode electrically connecting to an information storing
unit for storing information electrically, said connection
electrode being disposed at a position close to said second
wall on which said projection is formed.
In a further aspect, the present invention resides in
an ink cartridge detachably mountable on an ink jet recording
apparatus having a print head, comprising: a housing
containing ink therein and comprising a top wall, a first
wall facing frontward with respect to a cartridge insertion
direction and perpendicular to said top wall, a second wall
arranged generally parallel to the cartridge insertion
direction and intersecting said top wall and said first wall;
an ink supply section disposed on said first wall for
supplying ink in said housing to the print head; an
engagement portion formed on said second wall which is
CA 02557825 2008-06-26
engageable with the recording apparatus, said engagement
portion having a first region lying in a first plane and a
second region lying in a second plane, the second plane
intersecting the first plane, said engagement portion
5 being dimensioned and disposed such that said engagement
portion is contacted by and biased by a part of the
recording apparatus when the ink cartridge is mounted in
the recording apparatus, the part of the recording
apparatus contacting both the first region and the second
10 region of the engagement portion; and a connection
electrode electrically connecting to an information
storing unit for storing information electrically, said
connection electrode being disposed at a position close to
said second wall on which said engagement portion is
15 f ormed .
In a further aspect, the present invention provides
An ink cartridge detachably mountable on an ink jet
recording apparatus having a print head, comprising: a
housing containing ink therein and comprising a top wall,
a bottom wall, a first wall facing frontward with respect
to a cartridge insertion direction and perpendicular to
said top wall, a second wall arranged generally parallel
to the cartridge insertion direction and intersecting said
top wall and said first wall; an ink supply section
disposed on said first wall for supplying ink in said
housing to the print head; a projection formed on said
second wall which is engageable with the recording
apparatus, said projection being formed at a position such
that said projection is biased by a part of the recording
apparatus when the ink cartridge is mounted in the
recording apparatus; and a connection electrode
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15a
electrically connecting to an information storing unit for
storing information electrically, said connection
electrode being disposed at a position close to said
second wall on which said projection is formed, at least a
portion of said connection electrode being disposed in a
plane that lies between the top wall and the bottom wall.
In a still further aspect, the present invention
provides an ink cartridge detachably mountable on an ink
jet recording apparatus having a print head, comprising: a
housing containing ink therein and comprising a top wall,
a bottom wall, a first wall facing frontward with respect
to a cartridge insertion direction and perpendicular to
said top wall, a second wall arranged generally parallel
to the cartridge insertion direction and intersecting said
top wall and said first wall; an ink supply section
disposed on said first wall for supplying ink in said
housing to the print head; a projection formed on said
second wall, said projection being formed at a position
where said projection is biased by a part of the recording
apparatus when the ink cartridge is mounted in the
recording apparatus, said projection comprising a first
part closer to said first wall and a second part farther
from said first wall, said second part being engageable
with a part of the recording apparatus; and a connection
electrode electrically connecting to an information
storing unit for storing information electrically, said
connection electrode being disposed at a position close to
said second wall on which said projection is formed, at
least a portion of said connection electrode being
disposed in a plane that lies between the top wall and the
bottom wall.
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15b
In a further aspect, the present invention provides
an ink cartridge detachably mountable on an ink jet
recording apparatus having a print head and a plurality of
connection electrodes, comprising: a housing containing
ink therein and comprising a top wall, a bottom wall, a
first wall facing frontward with respect to a cartridge
insertion direction and perpendicular to said top wall, a
second wall arranged generally parallel to the cartridge
insertion direction and intersecting said top wall and
said first wall; an ink supply section disposed on said
first wall for supplying ink in said housing to the print
head; a projection formed on said second wall which is
engageable with a part of the recording apparatus, said
projection being formed at a position such that said
projection is biased by a part of the recording apparatus
when the ink cartridge is mounted in the recording
apparatus; and a plurality of connection terminals
respectively electrically connectable to the connection
electrodes of the recording apparatus, said connection
terminals being disposed at a position close to said
second wall on which said projection is formed, at least a
portion of each said connection terminal being disposed in
a plane that lies between the top wall and the bottom
wall.
In a still further aspect, the present invention
provides an ink cartridge detachably mountable on an ink
jet recording apparatus having a print head, comprising: a
housing containing ink therein and comprising a top wall,
a bottom wall, a first wall facing the frontward with
respect to a cartridge insertion direction and
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15C
perpendicular to said top wall, and a second wall arranged
generally in parallel to the cartridge insertion direction
and intersecting said top wall and said first wall; an ink
supply section disposed on said first wall for supplying
ink in said housing to the print head; an engagement
portion formed on said second wall and which is engageable
with the recording apparatus, said engagement portion
being formed at a position where said engagement portion
is biased by a part of the recording apparatus when the
ink cartridge is mounted in the recording apparatus, said
engagement portion including a section that is a part of
said second wall, said section being shaped and positioned
so that when the ink cartridge is mounted in the recording
apparatus only said section is pushed by the recording
apparatus to urge the ink cartridge in a direction; and a
connection electrode electrically connecting to an
information storing unit for storing information
electrically, said connection electrode being disposed at
a position close to said second wall on which said
engagement portion is formed, at least a portion of said
connection electrode being disposed in a plane that lies
between the top wall and the bottom wall.
In a further aspect, the present invention provides
An ink cartridge detachably mountable on an ink jet
recording apparatus having a print head, comprising: a
housing containing ink therein and comprising a top wall,
a first wall facing frontward with respect to a cartridge
insertion direction and perpendicular to said top wall, a
second wall arranged generally parallel to the cartridge
insertion direction and intersecting said top wall and
said first wall; an ink supply section disposed on said
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15d
first wall for supplying ink in said housing to the print
head; an engagement portion formed on said second wall
which is engageable with the recording apparatus, said
engagement portion having a first region lying in a first
plane and a second region lying in a second plane, the
second plane intersecting the first plane, said engagement
portion being dimensioned and disposed such that said
engagement portion is contacted by and biased by a part of
the recording apparatus when the ink cartridge is mounted
in the recording apparatus, the part of the recording
apparatus contacting both the first region and the second
region of the engagement portion; a connection electrode
electrically connecting to an information storing unit for
storing information electrically, said connection
electrode being disposed at a position close to said
second wall on which said engagement portion is formed;
and a positioning section provided adjacent to the
connection electrode.
The summary of the invention does not necessarily
describe all necessary features of the present invention.
The present invention may also be a sub-combination of the
features described above.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective view of an ink jet recording
apparatus according to a first embodiment of the present
invention.
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15e
Fig. 2 is a perspective view of the ink jet recording
apparatus shown in Fig. 1 with a cover of the ink
cartridge holder being open.
Fig. 3 is a front perspective view of an ink
cartridge according to the first embodiment.
Fig. 4 is plane views of the ink cartridge according to
the first embodiment.
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Fig. 5 is a rear perspective view of the ink cartridge
according to the first embodiment.
Fig. 6 is a partial perspective view of the ink
cartridge holder according to the first embodiment.
Fig. 7 is a partial front view of the ink cartridge
holder according to the first embodiment.
Fig. 8 is a partial side view showing process of ink
cartridge installation to the ink cartridge holder according
to the first embodiment.
Fig. 9 is a partial side view showing process of the ink
cartridge installation to the ink cartridge holder according
to the first embodiment.
Fig. 10 is a partial side view showing process of the
ink cartridge installation to the ink cartridge holder
according to the first embodiment.
Fig. 11 is a perspective view of the ink jet recording
apparatus according to a second embodiment with a cover of
the ink cartridge holder being open.
Fig. 12 is a front perspective view of the ink cartridge
according to the second embodiment of the present invention.
Fig. 13 is plain views of the ink cartridge according to
the second embodiment.
Fig. 14 is a partial perspective view of the ink
cartridge holder according to the second embodiment.
Fig. 15 is a partial front view of the ink cartridge
holder according to the second embodiment.
Fig. 16 is a partial side view of the ink cartridge
holder according to the second embodiment.
Fig. 17 is a partial side view of one of the ink
cartridge holders nearest to a lever viewed from the lever
side.
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17
Fig. 18 is a partial side view showing process of the
ink cartridge installation to the ink cartridge holder
according to the second embodiment.
Fig. 19 is a partial side view showing process of the
ink cartridge installation to the ink cartridge holder
according to the second embodiment.
Fig. 20 is a partial side view showing process of the
ink cartridge installation to the ink cartridge holder
according to the second embodiment.
Fig. 21 is a partial side view showing process of the
ink cartridge installation to the ink cartridge holder
according to the second embodiment.
Fig. 22 is a perspective view of the ink cartridge
according to a third embodiment.
Fig. 23 is an exploded perspective view of the ink
cartridge main body.
DETAILED DESCRIPTION OF THE INVENTION
The invention will now be described based on the
preferred embodiments, which do not intend to limit the scope
of the present invention, but exemplify the invention. All
of the features and the combinations thereof described in the
embodiment are not necessarily essential to the invention.
Fig. 1 is a perspective view of an ink jet recording
apparatus 10 according to a first embodiment of the present
invention. The ink jet recording apparatus 10 includes a
recording apparatus main body 100, and an ink cartridge
holder 200 which is provided in a part of the recording
apparatus main body 100 and to which the ink cartridge is
mounted. The ink cartridge holder 200 of the ink jet
recording apparatus 10 includes the pivotable cover 202. An
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example of the ink jet recording apparatus 10 is a large-size
ink jet printer which records on large-size papers or other
mediums of A2 to A0 size, for example, such as posters,
requiring large quantity of ink.
Fig. 2 is a perspective view of the ink jet recording
apparatus 10 shown in Fig. 1 with the cover 202 of the ink
cartridge holder 200 being open. The ink cartridge holder
200 holds a plurality of ink cartridges 300. The ink jet
recording apparatus 10 is equipped with a plurality of ink
cartridges 300, where each of the ink cartridges 300 is
filled with ink of a predetermined color respectively.
Accordingly, the ink jet recording apparatus 10 records color
image on the supplied papers.
Fig. 3 is a front perspective view of the ink cartridge
according to the first embodiment of the present invention.
The ink cartridge 300 according to the first embodiment
includes an ink cartridge main body 302 having a
substantially rectangular parallelepiped shape, an
information storing unit 314 provided on a recess 312 which
is a part of a first side or a first wall 310 of the ink
cartridge main body 302, an ink supply unit 322 provided on
the front surface 320, which is perpendicular to the first
wall 310, and a positioning section 326 provided on the front
surface 320.
Fig. 23 is an exploded perspective view of the ink
cartridge main body 320. The ink cartridge main body 302 of
the ink cartridge 300 contains ink therein. As an example of
an ink holding means inside the ink cartridge main body 302,
the ink cartridge main body 302 includes a container main
part 304 with one side being open, a flexible bag 306 to
CA 02557825 2003-03-20
19
which an ink supply port 307 is provided at one end, and a
substantially flat-plated cover unit 308. In this ink
cartridge main body 302, the bag 306 is filled up with ink,
the bag 306 is enclosed in the ink cartridge main body 302,
and the ink supply port 307 provided at one end of it is
fixed to the ink supply unit 322. The cover unit 308 is
fixed to an opening of the container main part 304 by
vibration welding or the like, with the bag 306 being
enclosed. Thereby, a large quantity of ink is held and the
large quantity of the ink is supplied to the ink jet
recording apparatus stably which records on large size papers
such as posters.
The information storing unit 314 of the ink cartridge
300 stores information, such as a type of ink and the ink
cartridge, color of the ink in the ink cartridge, and
remaining amount of the ink. For example, as shown in Fig.
4A, the information storing unit 314 is a contact type IC
chip. The contact type IC chip includes a substrate 319, a
connection electrode section 316 including a plurality of
connection terminals 316a which are exposed to the front
surface of the substrate 319, and memory including a
semiconductor memory element, such as EEPROM provided on a
back side of the substrate 319. The information data in the
memory is read or rewritten through the connection terminals
316a electrically connecting with connection electrodes of
the recording apparatus. In the present embodiment, the
information storing unit 314 is of a contact type which is
provided with the connection electrode section 316 including
the plurality of connection terminals 316a exposed outside.
Although two connection terminals 316a are illustrated
in Fig. 3 for clearness, seven connection terminals are
CA 02557825 2003-03-20
arranged in two rows staggeredly in the present embodiment as
shown in Fig.4. Alternatively, for example, the memory of
the information storing unit may be provided on the other
wall of the cartridge main body or the like and connects with
5 the connection electrode section 317, which is provided on
the first wall 310, via a flexible print circuit (FPC).
Furthermore, the information storing unit is not limited to
contact type but a non-contact type information storing unit
using magnetism or optics is applicable.
In the present embodiment, the recess 312 is provided in
upper part of the first wall 310 of the ink cartridge main
body 302 as shown in Fig. 3. The information storing unit
314 and especially the connection electrode section 316 are
arranged in the recess 312. The recess 312 prevents careless
contact or impact to the information storing unit 314 from
outside. Moreover, since the upper part of the connection
terminal surface is opened to the outside in the recess 312,
the information storing unit 314 is easily mounted on the ink
cartridge main body 302 during manufacturing of the ink
cartridge.
In addition, the bottom of the recess 312 and top
surface (surface on which the connection electrode section is
provided) of an information storing unit attachment unit 318
which projects from the recess 312 are provided substantially
parallel to the first wall 310.
An ink supply port 324 is provided in the ink supply
section 322 of the ink cartridge 300, and the ink is supplied
to the recording apparatus main body 100 from the ink
cartridge 300 through the ink supply port 324. In addition,
according to an embodiment which includes the ink bag having
CA 02557825 2003-03-20
21
the ink supply port at one end as shown in Fig. 23, one end
of the ink supply port 307 of the ink bag is fixed so that it
exposes from the ink supply port 324, and an ink supply
needle of the recording apparatus is inserted in the ink
supply port 307. For example, the ink supply port 307 of the
ink bag 306 is sealed by elastic member, such as rubber, so
as to prevent leakage of the ink. Alternatively, a valve,
which can be opened by insertion of the ink supply needle,
may be provided.
Furthermore, in the rear side of the ink cartridge 300,
there includes a grip 350 and a hollow 352. The grip 350 and
the hollow 352 enable a user to securely grip the ink
cartridge 300, and to easily attach/detach the ink cartridge
300 to/from the ink cartridge holder 200 of the ink jet
recording apparatus 10.
Fig. 4 shows a part of the cartridge viewed from the
front and from the first wall of the ink cartridge according
to the first embodiment. The positioning section 326 of the
ink cartridge 300 is provided in the vicinity of the
connection electrode section 316 of the information storing
unit 314 provided in the recess 312 of the first wall 310 so
that it overlaps with the connection electrode section 316 in
the direction of the cartridge thickness viewed from the
front surface (the direction of arrow B). More particularly,
the positioning section 326 positions so that the center line
of the width W2 of a port 328 of the positioning section 326
is located within the range of the width W1 of the connection
electrode section 316 in the direction of arrow A. The arrow
A in the drawing shows "direction parallel to the first wall
and a surface perpendicular to the cartridge installation
direction". In other words, the port 328 of the positioning
CA 02557825 2003-03-20
22
section 326 extends in a direction in which the ink cartridge
is mounted and the center axis of the port 328 is located
within a range of the width Wl of the connection electrode
section 316 when viewed in the direction perpendicular to the
first wall 310.
Moreover, although the shape of the positioning section
326 may be a concave or cylindrical shape so that a below-
mentioned positioning member 220 is inserted into it, it is
preferable that the positioning section 326 is shaped so as
to limit the movement of the cartridge in the direction of
the arrow A, and/or the direction of the arrow B, which is
perpendicular to the direction of the arrow A as shown in the
drawing.
As for the port 328 of the positioning section 326, it
is preferable that the center line C2 of the width W2 of the
port 328 of the positioning section 326 in the direction of
the arrow A is substantially aligned with the center line Cl
of the width W1 of the connection electrode section.
More particularly, in Fig. 4, it is preferable that a
center line C2 in the direction of the first wall, which
passes through the center axis of the width W2 of the port
328 of the positioning section 326, and a center line Cl of
the connection electrode section 316 on the information
storing unit 314, are aligned in the direction of the arrow
A, which is parallel to the first wall 310 in the drawing and
the front surface 320. Thereby, the connection electrode
section is accurately aligned with the connection electrodes
of the recording apparatus when the cartridge is installed to
a below-mentioned ink cartridge holder.
CA 02557825 2003-03-20
23
Fig. 5 is a rear perspective view of the ink cartridge
according to the first embodiment. The ink cartridge 300
includes a rear surface 340, which is substantially parallel
to the front surface 320. The grip 350 is provided on the
rear surface 340, and a width W4 of the grip is narrowly
shaped compared with the maximum width W3 of the rear
surface. Therefore, even if the plurality of installed
cartridge adjoin each other in the cartridge holder as shown
in Fig. 1, the ink cartridges can be taken out easily by
inserting user's finger into the grip.
Fig. 6 is a partial perspective view of the ink
cartridge holder of the first embodiment. Although the ink
cartridge holder 200 of Fig. 1 holds the plurality of ink
cartridges, one ink cartridge holder 201 holding one of the
ink cartridges is shown here for explanation.
The ink cartridge holder 201 according to the first
embodiment includes a main part 210 which has an opening face
212 through which the ink cartridge 300 is installed from the
front surface 320, and holds the ink cartridge 300. In the
present embodiment, the ink cartridge holder 201 includes an
end face 230 which is substantially parallel to the opening
face 212.
Furthermore, in the inner side of a holder main body 210
of the ink cartridge holder 201, an information reading
section 214 is provided at the position corresponding to the
information storing unit 314 of the ink cartridge 300. A
plurality of connection electrodes 216 corresponding to the
plurality of connection terminals 316a of the connection
electrode section 316 of the ink cartridge 300 are provided
on the top surface of the information reading section 214.
CA 02557825 2003-03-20
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Although only two connection electrodes are illustrated in
the drawing for clearness, the configuration of the
information reading section 214 is not limited to the above-
mentioned embodiment shown in the drawing as long as it reads
information in the information storing unit 314 of the ink
cartridge 300.
Furthermore, the ink cartridge holder 201 includes the
positioning member 220 which extends to the direction of the
opening face 212 from the holder main body 210. According to
the present embodiment, the positioning member 220 has a
substantially tubular shape with a circular cross-sectional
shape corresponding to the port 328 of the positioning
section 326 of the ink cartridge 300. The positioning member
220 includes a tapered conical end 224, and includes a
positioning member main body 222 which is inserted in the
port 328 of the ink cartridge 300. Furthermore, the
positioning member 220 includes an abutting section 226
having an abutment surface 228 abutting on the ink cartridge
300, where cross-sectional area of the abutting section 226
is larger than that of the positioning member main body 222.
In the present embodiment, the abutting section 226 extends
from the end face 230.
The ink cartridge holder 201 further includes an ink
supply needle 232, where an end of the ink supply needle 232
is connected to a recording head of the recording apparatus
main body 100. The ink supply needle 232 includes an ink
passage 234, connects with the ink supply unit 322 of the ink
cartridge, and supplies the ink in the ink cartridge 300 to
the recording head provided in the recording apparatus main
body 100.
CA 02557825 2003-03-20
Fig. 7 is a partial front view of the ink cartridge
holder 201 according to the first embodiment viewed from the
opening face.
5 The positioning member 220 of the ink cartridge holder
201 is in the vicinity of the connection electrode 216 of the
information reading section 214, and provided so that it
opposes to the connection electrode section 316 in the
direction of arrow D (thickness direction of the installed
10 cartridge). Moreover, the direction of arrow C in the
drawing shows the direction parallel with the first wall 310
of the installed ink cartridge 300 and a surface
perpendicular to the installation direction of the cartridge.
15 The positioning member 220 is provided so that a center
line C4, which passes through the center axis of the
extending direction of the positioning member main body 222,
is positioned within range of width W5 of the connection
electrode 216 of the information reading section 214 in the
20 direction of an arrow C. Furthermore, it is preferable that
the center line C4, which passes through the center axis of
the extending direction of the positioning member main body
222, is aligned with a center line C3, which passes through
center axis of width W5 of the connection electrode 216 of
25 the information reading section 214 in the direction of the
arrow A. In other words, the main body 222 of the
positioning member 220 extends in a direction to which the
ink cartridge is mounted and the center axis of the main body
222 is located within a range of the width W5 of the
information reading section 214 when viewed in the direction
perpendicular to the first wall 310.
CA 02557825 2003-03-20
26
Figs. 8-10 are partial side views showing process of ink
cartridge installation to the ink cartridge holder according
to the first embodiment.
Fig. 8 is a partial side view showing first step of the
installation of the ink cartridge 300 to the ink cartridge
holder 201. The front surface 320 of the ink cartridge 300
is inserted from the opening face 212 of the holder main body
210 of the ink cartridge holder 201. At this time, the end
224 of the positioning member 220 of the ink cartridge holder
201 opposes to the port 328 of the positioning section 326 of
the ink cartridge 300. Furthermore, the ink supply needle
232 of the ink cartridge holder 201 opposes to the ink supply
port 324 of the ink supply unit 322 of the ink cartridge 300.
Then, the ink cartridge 300 is further inserted into the ink
cartridge holder 201 more deeply.
Fig. 9 is a partial side view showing next step of the
ink cartridge installation following Fig. 8. When the ink
cartridge 300 is further inserted into the ink cartridge
holder 201 more deeply than the state shown in Fig. 8, the
end 224 of the positioning member 220 of the ink cartridge
holder 201 is inserted in the port 328 of the positioning
section 326 of the ink cartridge 300. Since the end 224 is
tapered towards the nose from the positioning member main
body 222, a position gap between the ink cartridge holder 201
and the ink cartridge 300 is compensated, so that the ink
cartridge 300 is guided into the ink cartridge holder 201.
When the ink cartridge 300 is further inserted into the
ink cartridge holder 201 much more deeply, the ink supply
needle 232 of the ink cartridge holder 201 is inserted into
CA 02557825 2003-03-20
27
the ink supply port 324 of the ink supply unit 322 of the ink
cartridge 300.
Fig. 10 is a partial side view showing the next step of
the ink cartridge installation following Fig. 9. When the
ink cartridge 300 is further inserted into the ink cartridge
holder 200 more deeply than the state shown in Fig. 9, the
positioning section 326 of the ink cartridge 300 abuts on the
abutment surface 228 of the abutting section 226 of the
positioning member 220 in the ink cartridge holder 201.
Thereby, the insertion of the ink cartridge 300 into the ink
cartridge holder 201 is completed. Although it is not shown
in the drawings, the connection electrodes 216 of the
information reading section 214 in the ink cartridge holder
201 respectively contact with connection terminals 316a of
the connection electrode section 316 of the information
storing unit 314 in the ink cartridge 300.
Accordingly, installation of the ink cartridge 300 to
the ink cartridge holder 201 is completed. The information
reading section 214 of the ink cartridge holder 201 reads
information such as a kind of ink cartridge, color of the ink
which the ink cartridge is holding, and the remaining amount
of the ink, from the information storing unit 314 of the ink
cartridge 300. Based on the read information and demand from
the recording apparatus main body 100, the ink in the ink
cartridge 300 is supplied to the recording apparatus main
body 100 through the ink supply needle 232 of the ink
cartridge holder 201. The ink jet recording apparatus 10
records on papers using the supplied ink. Moreover, in
accordance with the amount of the ink used for the recording,
the information reading section 214 of the ink cartridge
holder 201 writes information, such as remaining amount of
CA 02557825 2003-03-20
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the ink in an ink cartridge at this moment, to the
information storing unit 314 of the ink cartridge.
There is variation in the ink cartridge holder 201, the
ink cartridge 300, their components and assembly of these
components. Due to such variations, the ink cartridge 300
may be installed in the ink cartridge holder 201 in the
direction of the arrow B in Fig. 10. Even if it is that
case, since the positioning member 220 of the ink cartridge
holder 201 and the positioning section 326 of the ink
cartridge 300 are engaged, the ink cartridge 300 rotates in
the ink cartridge holder 201 in the direction of arrow Dl
substantially on a point 01. Therefore, even if there is the
instability, a gap of relative position between the
connection electrode 216 on the information reading section
214 of the ink cartridge holder 201 and the connection
electrode section 316 on the information storing unit 314 of
an ink cartridge 300, which should be aligned accurately, is
very little.
As mentioned above, according to the first embodiment,
even if the ink cartridge has the instability to the ink
cartridge holder due to the variation in every product or the
like, the connection electrodes on the information reading
section of the ink cartridge holder are aligned with the
connection terminals on the information storing unit of the
ink cartridge, where accurate positioning is required.
Fig. 11 is a perspective view of the ink jet recording
apparatus according to a second embodiment with a cover 202
of the ink cartridge holder 200 being open. A lever 470 is
provided on the right of the ink cartridge holder 200 of the
ink jet recording apparatus 10, and when this lever 470 is
CA 02557825 2003-03-20
29
moved up and down, the ink cartridge 500 is locked or
unlocked.
Fig. 12 is a front perspective view of the ink cartridge
according to the second embodiment of the present invention.
In the ink cartridge 500 according to the second embodiment,
the same reference numeral is given to the same component as
that of the ink cartridge 300 of the first embodiment, and
explanation of the component is omitted. The ink cartridges
500 according to the second embodiment differs with the ink
cartridge 300 according to the first embodiment, in that it
further includes a sub-positioning section 526. The ink
cartridge 500 further includes a projection 532 on a 2nd side
530 which intersects the first wall 310 and the front surface
320 of the ink cartridge main body 302.
Fig. 13 shows a part of the cartridge according to the
second embodiment viewed from the front and the first wall of
the ink cartridge. The sub-positioning section 526 and the
positioning section 326 are arranged in parallel in the
direction A in the drawing (the direction parallel with the
first wall 310 and a surface perpendicular to the cartridge
installation direction) so that the ink supply unit 322 is
positioned between them, and the sub-positioning section 526
is located farther from the connection electrode section 316
of the information storing unit 314 than the positioning
section 326. The sub-positioning section 526 includes an
elliptical port 528, where width W7 of a major axis in the
direction of arrow A is longer than width W6 of a minor axis
in the direction of arrow B. In the present embodiment,
surface of the sub-positioning section 526 and surface of the
positioning section 326 are substantially in one plane. As
shown in Fig. 13, both the center axes of the sub-positioning
CA 02557825 2003-03-20
section 526 and the positioning section 326 extend
substantially in parallel to the first wall 310.
Fig. 14 is a partial perspective view of an ink
5 cartridge holder 400 according to the second embodiment.
Fig. 15 is a partial front view of the ink cartridge holder
400 according to the second embodiment. In the ink cartridge
holder 400 according to the second embodiment, the same
reference numeral is given to the same component as that of
10 the ink cartridge holder 201 according to the first
embodiment, and explanation of the component is omitted. The
ink cartridge holder 400 according to the second embodiment
differs with the ink cartridge holder 201 according to the
lst embodiment in that it further includes a sub-positioning
15 member 420.
The sub-positioning member 420 of the ink cartridge
holder 400 extends from the holder main body 210 to the
direction of the opening face 212. The sub-positioning
20 member 420 is provided in parallel with the positioning
member 220 in the direction of arrow C in the drawing so that
the ink supply needle 232 is positioned between them. The
sub-positioning member 420 is located in a position distant
from the connection electrode section 216 of the information
25 reading section 214.
Fig. 16 is a partial side view of the ink cartridge
holder according to the second embodiment. The sub-
positioning member 420 includes a positioning-member main
30 body 422 having a tapered conical end 424, which is inserted
into the ink cartridge 500. The sub-positioning member 420
further includes an abutting section 426 having an abutment
surface 428, where distance between the abutment surface 428
CA 02557825 2003-03-20
31
and the opening face 212 is longer than the distance between
the abutment surface 228 of the abutting section 226 of the
positioning member 220 and the opening face 212. A cross-
sectional area of the abutting section 426 is larger than
that of the positioning member main body 422.
Fig. 17 is a partial side view of one of the ink
cartridge holders 400 nearest to the lever 470 of Fig. 16
viewed from the side of the lever 470. A gear 471 of the
lever 470 engages with a gear 481 of a gear member 480, and
the gear member 480 is connected to a cam 450 through a shaft
490.
The ink cartridge holder 400 further includes a urging
section 430 which selectively presses against the second wall
530 of the ink cartridge 500.
The urging section 430 according to the present
embodiment includes an contact piece 440 including an
abutting section 440a which abuts on the projection 532 of
the ink cartridge 500, and rotates a little, and the leaf
spring 460 which urges the contact piece 440 to the direction
of the ink cartridge 300. Furthermore, the urging section
430 includes a cam 450 rotatable between a release position
where it does not abut against the leaf spring 460 and a
urged position where it does abut against the leaf spring
460. The cam 450 rotates with respect to a shaft 490 in
response to the vertical movement of the lever 470 through
the gear member 480, the gear 471, and the gear 481 which are
connected with the shaft 490. As shown in Figs. 16 and 17,
when the lever 470 of Fig. 11 is raised, the cam 450 comes to
be in the release position. When the cam 450 is in the
release position, the cam 450 does not abut against the leaf
CA 02557825 2003-03-20
32
spring 460. Therefore, the contact piece 440 is allowed to
rotate upward a little by resisting against the force of the
leaf spring 460. On the other hand, when the lever 470 of
Fig. 11 is lowered, the cam 450 is in the urged position and
the cam 450 abuts on the leaf spring 460. Therefore, the
contact piece 440 is not allowed to rotate.
Figs. 18 through 21 are partial side views showing
process of the ink cartridge installation onto the ink
cartridge holder according to the second embodiment.
However, in order to explain operation of the projection 532
of the ink cartridge 500 and the urging section 420 of the
ink cartridge holder 400, the two portions are shown as
perspective views.
Fig. 18 is a partial side view showing first step of the
installation of the ink cartridge 500 to the ink cartridge
holder 400. First, the cam 450 rotates to the release
position by raising the lever 470 of Fig. 11. Accordingly,
the contact piece 440 is allowed to rotate a little.
The front surface 320 of the ink cartridge 500 is
inserted from the opening face 212 of the holder main body
210 of the ink cartridge holder 400. At this time, the
positioning member main body 222 of the positioning member
220 of the ink cartridge holder 400 opposes to the port 328
of the positioning section 326 of the ink cartridge 500.
Similarly, the end 424 of the sub-positioning member 420 of
the ink cartridge holder 400 opposes to the port 528 of the
sub-positioning section 526 of the ink cartridge 500.
Furthermore, the ink supply needle 232 of the ink cartridge
holder 400 opposes to the ink supply port 324 of the ink
supply unit 322 of the ink cartridge 500. In the state, the
CA 02557825 2003-03-20
33
ink cartridge 500 is further inserted into the ink cartridge
holder 400 more deeply.
Fig. 19 is a partial side view showing next step of the
ink cartridge installation following Fig. 18. When the ink
cartridge 500 is further inserted into the ink cartridge
holder 400 more deeply than the state shown in Fig. 18, the
end 224 of the positioning member 220 of the ink cartridge
holder 400 is inserted in the port 328 of the positioning
section 326 of the ink cartridge 500. Moreover, the end 424
of the sub-positioning member 420 of the ink cartridge holder
400 is inserted in the port 528 of the sub-positioning
section 526 of the ink cartridge 500.
Since the end 224 of the positioning member 220 is
tapered towards the nose from the positioning member main
body 222, a position gap between the ink cartridge holder 400
and the ink cartridge 500 is compensated, so that the ink
cartridge 500 is guided into the ink cartridge holder 400.
Moreover, as explained in reference with Fig. 13, since the
width W7 of the major axis in the direction of arrow A is
longer than the width W6 of the minor axis in the direction
of arrow B, the port 528 of the sub-positioning section 526
limits the fluctuation due to the rotation of the ink
cartridge 500 to the ink cartridge holder 400 centering on
the positioning member 220, and compensates the variation in
length of the ink cartridge 500 and the ink cartridge holder
400 in the direction of the arrow B in Fig. 15.
During the installation of the ink cartridge 500, the
projection 532 provided on the second wall 530 of the ink
cartridge 500 abuts on the abutting section 440a of the
contact piece 440 of the urging section 430 of the ink
CA 02557825 2003-03-20
34
cartridge holder 400. Here, since the contact piece 440 is
allowed to rotate upward a little, the projection 532 forces
up the contact piece 440 upward resisting the force of the
leaf spring 460 during the insertion of the ink cartridge
500.
When the ink cartridge 500 is further inserted into the
ink cartridge holder 400 much more deeply, the ink supply
needle 232 of the ink cartridge holder 400 is inserted into
the ink supply port 324 of the ink supply unit 322 of the ink
cartridge 300.
Fig. 20 is a partial side view showing the next step of
the ink cartridge installation following Fig. 19. When the
ink cartridge 500 is further inserted into the ink cartridge
holder 400 more deeply than the state shown in Fig. 19, the
positioning section 326 of the ink cartridge 500 abuts on the
abutment surface 228 of the positioning member 220 in the ink
cartridge holder 400. Thereby, the insertion of the ink
cartridge 500 into the ink cartridge holder 400 is completed.
Although it is not shown in the drawing, the connection
electrodes 216 of the information reading section 214 in the
ink cartridge holder 201 respectively contact with the
connection terminals 316a of the connection electrode section
316 of the information storing unit 314 in the ink cartridge
500. Moreover, the projection 532 provided on the second
wall 530 of the ink cartridge 500 moves farther from the
opening face 212 than the abutting section 440a of the
contact piece 440 of the urging section 430 of the ink
cartridge holder 400, and the contact piece 440 returns to
retracted position by the force of the leaf spring 460.
CA 02557825 2003-03-20
At this time, the distance between the abutment surface
428 of the abutting section 426 of the sub-positioning member
420 and the opening face 212 is longer than the distance
between the abutment surface 228 of the abutting section 226
5 of the positioning member 220 and the opening face 212.
Therefore, the sub-positioning section 526 of the ink
cartridge 500 does not abut against the abutment surface 428
unless the positioning section 326 abuts on the abutment
surface 228. For example, in Fig. 20, there is a gap between
10 the sub-positioning section 526 and the abutment surface 428.
Therefore, even if there is variation in the ink cartridge
holder 300, the ink cartridge 500, their components and
assembly of these components, the abutment surface 228
securely abuts on the positioning section 326, which are
15 positioned in the vicinity of the connection electrode 216 of
the information reading section 214 and the connection
electrode section 316 of an information storing unit 314.
Fig. 21 is a partial side view shown in Fig. 20, where
20 the lever 470 (shown in Fig. 11) of the urging section 430 is
lowered. When the lever 470 is lowered, the cam 450 is
caused to rotate to the urged position and abuts on the leaf
spring 460. Therefore, the leaf spring 460 urges the contact
piece 440 downward. The forced down contact piece 440
25 securely abuts on the projection 532 of the ink cartridge
500. Accordingly, the ink cartridge 500 is rotated a bit in
the ink cartridge holder 201 in the direction of arrow D2
centering on a point 02 in the vicinity of the connection
point of the positioning member main body 222 and the
30 positioning section 326.
During the rotation, since the central point 02 of the
rotation is in the vicinity of the information reading
CA 02557825 2003-03-20
36
section 214 and the information storing unit 314, the amount
of displacement around the area due to the rotation is very
little. On the other hand, although the amount of
displacement of the sub-positioning section 526, which is in
the position distant from the central point of a rotation, is
larger than the displacement of the area around the point 02,
since the direction of the major axis of the port 528 is the
same as the rotating direction of the ink cartridge 500, the
port 528 of the sub-positioning section 526 compensates the
displacement in the direction of the rotation.
Consequently, the rotation is limited when the sub-
positioning section 526 of the ink cartridge 500 abuts
against the abutment surface 428 of the sub-positioning
member 420 of the ink cartridge holder 400, or a part of the
ink cartridge main body 302 abuts on a part of the holder
main body 210. Then, installation of the ink cartridge 500
to the ink cartridge holder 400 is completed.
In addition, when removing the ink cartridge 500 from
the ink cartridge holder 400, the lever 470 (shown in Fig.
11) of the ink cartridge holder 400 is raised, and the cam
450 is caused to rotate to the release position. Then, the
ink cartridge 500 is drawn out from the opening 212 of the
ink cartridge holder 400. At that time, the projection 532
of the ink cartridge 500 pushes up the contact piece 440
resisting the force of the leaf spring 460 of the ink
cartridge holder 400.
As mentioned above, according to the second embodiment,
the same effect as the first embodiment is achieved.
Furthermore, according to the second embodiment, even if
CA 02557825 2003-03-20
37
there is variation in each components or the like, the ink
cartridge is securely fixed to the ink cartridge holder.
In addition, in the ink cartridge holder 400 according
to the second embodiment, although the abutment surface 428
of the abutting section 426 of the sub-positioning member 420
is located farther from the opening face 212 than the
abutment surface 228 of the abutting section 226 of the
positioning member 220, the configuration of these components
is not limited to the embodiment. In another embodiment of
the ink cartridge 500, the distance between the front surface
320 and the top surface of the positioning section 326 is
longer than the distance between the front surface 320 and
the top surface of the sub-positioning section 526. Also in
this case, the same effect as the second embodiment is
achieved.
Alternatively, in the first and second embodiments, the
holder main bodies 210 and 410 of the ink cartridge holders
201 and 400 is dimensioned so that there is at least a
clearance or some plays at least in the direction parallel to
the first wall 310 and the front surface 320 of the ink
cartridges 300 and 500, when the ink cartridges 300 and 500
are inserted respectively. In this case, while a user can
install the ink cartridge to the ink cartridge holder much
more easier, relative position between the connection
electrode on the information reading section of the ink
cartridge holder and the connection electrode section on the
information storing unit of an ink cartridge, which should be
aligned accurately, can be maintained. In addition, when the
clearance exists in the holder main body 410 of the ink
cartridge holder 400 according to the second embodiment, the
looseness due to the clearances is compensated by the urging
CA 02557825 2003-03-20
38
section 430 after the installation of the ink cartridge 500.
Therefore, the ink cartridge is securely fixed to the ink
cartridge holder.
Fig. 22 is a perspective view of the ink cartridge
according to yet another embodiment. An incorrect insertion
prevention member 610 is removably provided on the side of
the cartridge main body in the vicinity of the front surface
320 so that the ink cartridge is mounted to a proper position
of the cartridge holder which holds a plurality of ink
cartridges 600. Accordingly, different ink cartridges are
constructed from common ink cartridge main bodies by changing
the number or location of projections 611 and 612 (see Fig.
22) of the incorrect insertion prevention member 610 for each
of the cartridges.
As described above, according to the present invention,
even if the ink cartridge has instability to the ink
cartridge holder due to the variation in each products, the
relative position between the information reading section of
the ink cartridge holder and the information storing unit of
the ink cartridge, which should be aligned accurately, is
maintainable.
Although the present invention has been described by way
of an exemplary embodiment, it should be understood that
those skilled in the art might make many changes and
substitutions without departing from the spirit and the scope
of the present invention. It is obvious from the definition
of the appended claims that embodiments with such
modifications also belong to the scope of the present
invention.
