Note: Descriptions are shown in the official language in which they were submitted.
113~553
1 BACKGROUND OF THE INVENTION
The present invention relates to a drum
scanning type facsimile device having a function of
automatically attaching the image bearing sheet such as
manuscript sheet or recording sheet.
A facsimile device is known in which the image
bearing sheet, which will be refered solely to "the sheet",
is fixed at its leading and training sides to the drum
by means of fixing bars. This type of facsimile device
which is usually referred to as single-sheet type or
simplified type facsimile, has no function for auto-
matically attaching and detaching successive stacked
sheets. In operation of this type of facsimile device,
the attaching and detaching of sheets has to be made
wholly manually by the steps of at first opening a drum
cover of the housing of the device, rotating the drum
and then fixing or releasing the sheet to and from the
drum.
Recently, there has been proposed a single-
sheet or simplified type facsimile device in which the
attaching and detaching of the sheet is made automatically.
However, manual works such as depression of a push button
is still required, besides the opening of ~he drum cover
by hand, even in this automatic facsimile device.
Current popularization of the facsimil~ device
-- 1 --
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113~i553
1 gives a rise to a demand for an easier attaching and
detaching of the sheet, even in case of the simplified
less-expensive device.
SUMMARY OF THE INVENTION
It is, therefore, a major object of the
invention to provide a facsimile device which permits
an easier attaching and detaching of the sheet to and
from the drum.
To this end, according to the invention, there
is provided a facsimile device in which the attaching and
detaching of the sheet is performed automatically in
such a manner that, once a drum cover or the like is
closed manually, the sheet is automatically picked up
from a predetermined position and wound round the drum,
and, once the drum cover or the like is opened, the
sheet is automatically detached from the drum and
returned to the predetermined position.
More specifically, the present invention
provides a facsimile device having a drum mounted
rotatably, and a first and a second bars movable into
and out of contact with the surface of the drum so as to
clamp, when in contact with the drum surface, both ends
of a sheet wound round the drum, characterized by
comprising a combination of rr.echanical means and electric
means which are adapted to control the operation of the
first and second bars in response to the opening and
closing motion of a manually operable drum cover or
- 113~i553
1 the like means, whereby a sheet placed at a predetermined
position is automatically wound round and fixed to the
drum solely by the closing motion of the cover or the
like means and the sheet is automatically released solely
by the opening motion of the same.
These and other objects, as well as advantageous
features of the invention will become more clear from the
following description of the preferred embodiments taken
in conjunction with the accompanying drawings.
BRIEF DES~RIPTION OF THE DRAWINGS
Fig. 1 is a schematic perspective view of a
facsimile device embodying the present invention;
Fig. 2 is a plan view of an essential part of
the facsimile device including a drum and associated
members;
Fig. 3 is a sectional view taken along the line
III-III of Fig. 2;
Fig. 4 is a sectional view taken along the line
IV-IV of Fig. 2;
Fig. 5 is a front elevational view of the drum
and other essential parts with both ends of the drum
being shown in section taken along the line V-\J of rig. 3;
Fig. 6 is a right side elevational viel~ of the
drum and other members shown in Fig. 2;
Fig. 7 is a left side elevational view of the
drum and other members shown in Fig. 2;
Fig. 8 is an illustration of interlocked
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1 operation of sensors and electric control circuit; and
Figs. ~ to 15 are illustrations of operation
of the embodiment of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring first to Fig. 1 schematically showing
a facsimile device embodying the present invention, the
facsimile device has a housing 1 covering the entire
portion of the device. A drum 2 is installed in the
housing 1. A drum cover 3 is adapted to be swung in the
direction of arrow, between a closing position shown by
full line and an opening position shown by two-dots-and-
dash line. A table 4 for mounting the sheets plays also
the role of a front cover of the facsimile device. The
drum 2 becomes accessible to permit the attaching and
detaching of the sheet, as the drum cover 3 is opened.
Figs. 2 to 7 show the essential parts of the
facsimile device in the so-called stand-by state ready
for the sheet supply. More specifically, Fig. 2 is a
plan view of the drum and the associated essential parts.
Figs. 3 and 4 are sectional views taken along the lines
III-III and IV-IV of Fig. 2, respectively. Fig. 5 is a
front elevational view of the drum and other essential
parts with both ends of the drum being shown in section
taken along the line V-V of Fig. 3. Figs. ~ and 7 are
right and left side elevational views cf the drum and
associated members shown in Fig. 2.
Referring first to Figs. 2 and 3, a shaft 7
1136553
l rotatably carrying the drum cover 3 is supported also
rotatably by left and right walls 5, 6. The drum cover
3 is shown in a state swung around the shaft 7 to the
opening position. Arms 8 having pins 8a, 8b fixed thereto
are attached to the shaft 7 at both sides of the drum
cover 3. The pins 8a, 8b are passed through arcuate
elongated apertures formed in both side walls of the
drum cover 3. A play angle ~ is preserved between the
pin 3a and the aperture 3a.
The opening and closing motion of the drum
cover 3 is transmitted through the elongated apertures
3a, the pin 8a and the arm 8 to the shaft 7 to rotate the
latter in the same direction as the movement of the drum
cover 3. The other pin 8b acts on bar-actuating levers 9
which are mounted symmetrically on shafts lO fixed to the
left and righ side walls 5, 6, respectively, and are
biased counter-clockwise by means of springs ll. In the
drawings referred to in the above description, members
such as arms 8, bar-actuating levers 9 and so forth which
are provided in pairs and arranged at both sides in
symmetry are designated at identical reference numerals,
as is the case of the following description.
As will be described later, a plurality of
pinch rollers 12 rotatably mounted on a shaft l~ fixed
to a bracket 13 are adapted to play a double role of
putting the sheet into close contact with the drum
surface when the sheet is wound round the drum and guid-
ing the released sheet when the latter is detached from
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1136553
1 the drum. The brackets 13 are rotatably carried by pins
15 which are respectively fixed to the left and right
walls 5, 6, and are biased by springs 16 in such a
direction that the pinch rollers 12 press the outer
peripheral surface of the drum. Also, the drum 2 is
fixedly mounted on a drum shaft 17 which in turn is
rotatably carried by both walls 5, 6.
Referring now to Fig. 5, retainers 19 for
bars 18 are rotatably secured to the drum shaft 17, in
contact with respective axial ends of the drum 2. These
retainers are prevented from moving in the axial direction
by means of stopper rings 20. The bar 18 is an elongated
leaf spring for clamping the trailing end of the sheet
and having a channel-like cross-section. The bar 18 has
a length slightly greater than the overall axial length
of the drum 2 so as to be supported at its both ends by
brackets 21.
It is often experienced in the conventional
facsimile device that the clamping force is weakened at
the portion near the lengthwise mid point of the bar 18.
In order to avoid this, the bar 18 is so designed to
have such a deflection that the mid portion of t~e bar 18
is positioned closer to the drum than other portions.
Each bracket 21 is fitted to a groove l9a formed in the
corresponding retainer 19, and is allowed to move along
the groove 19a, i.e. in the direction normal to the drum
2. A pin 21a is formed unitarily with each bracket 21.
The pin 21a is adapted to receive the force of a spring
~3~5~i3 ` :: ~
1 24 transmitted through a lever 23 which ~s secured to
the retainer 19 for free rotation around a shaft 24.
In consequence, the bracket 21 is always biased toward
the center of the drum 2. However, the bar 18 is held at
: .
a certain space from the drum surface, because the arm
23 is retained by the pin 9a of the bar-actuating lever 9.
In this state, a pin 39 fixed to the each side
surface of the drum 2I is in abutment with the side edge
of the bracket 21, which in turn holds the bar 18 in
this position until the drum 2 is rotated, in cooperation
with the rétaining action performed by the pin 9a. A -~
groove 21c having a later-descrlbed function is formed in
the drum-side surface of each bracket 21.
Referring to Fig. 4, a bar 25 having a hook-like
cross-section and adapted for clamping the leading end
of the sheet has a length somewhat smaller than;the
overall axial length of~the drum 2, and 1S received by :
a groove 2a formed over the entire length of the drum 2,
for free;movement in the direction normal to the latter.
~:: ` ~ :
Forces of springs 28 are applied to both ends of the bar
25 through arms 27 which are secured to the side surfaces
of the drum for rotation around the shafts 26, so that
the bar 25 is always biased toward the center of the
drum~3. In this state, however, the bar ~2Pi LS spaced
from the drum surface leaving a gap 25a therebetween
because the arms 27 are retalned by the pins 21a unitary
with the brackets 21.
Referring also to Fig. 6, a cam 29 is loosely
. :,
1136553
1 fitted to the shaft 7 on the outside of the right wail 6
for free rotation. A dog 30 fixed to the shaft 7 is
adapted to transmit the rotation of the shaft 7 caused
by opening and closing motion of the drum cover 3 to
the cam 29. A shutter 32 is rotatably carried by a shaft
31 which is fixed to the right side wall 6. The rotation
of the dog 30 is transmitted to the shutter 32 by means
of a link 33 thereby to open and close the path of light
beams for sensors 34 and 35. A drum stop lever 37 is
rotatably carried by a shaft 36 whicn in turn is fixed
to the right wall 6. This drum stopper lever 37 is
biased clockwise by means of the spring 38 so as to be
into engagement with a recess of a drum stop cam 40 which
is fixed to the drum shaft 17, thereby to retain the
latter. Therefore, the drum 2 is held in a constant
position, i.e. in the state in which the bar 25 is
spaced from the drum.
~cgc~
As will be dcstribcd later, the drum stop lever
37 operates in response to the angular displacement of
the cam 29 so as to release the drum stopper cam 40 and,
at the same time, to open and close a sensor 42 by means
of a shutter 41. Another shutter 43 provided with a
notch 43a is fixed to the drum shaft 17, and is adapted
to actuate a sensor 44 as will be described later.
Referring also to Fig. 7, a cam 45 is fixed to
the shaft 7 on the outisd~ of the leftside wall ~. A
spring 45 is attached such that its axis 46a is displaced
when the cam 45 is rotated through the shaft 7 as a
- 113~553
1 result of the opening and closing motlon of the drum
cover 3, and is adapted to impart to the cam 45, i.e. to
the shaft 7, a snapping action on each side of a dead
point.
A kicker lever 48 is rotatably carried by the
shaft 49 which is fixed to the left wall 5,-and is biased
counter-clockwise by means of a spring 50. However, the
kicker lever 48 is stopped at this position by means of
a stopper pin 51 which is fixed to the leftside wall 5.
As will be described later, a kicker cam 52 fixed to the
drum shaft 17 acts on the kicker lever under a certain
condition.
The drum shaft 17 is adapted to be driven by
a motor 53 which is an A.C. synchronous motor, through
a timing belt 54 and gears 55, 56.
Hereinafter, a description will be made as to
the interlocked operation between the sensors 34, 35,
42, 44 and the control circuit with specific reference
to Fig. 8. Sensors 34, 35, 42 and 44 are small-sized
20 photo-interrupters adapted to produce outputs correspond-
ing to the opening and closing of the light paths formed
therein. In the described embodiment, the turning on
and off, or switching of various parts of the circuit
described below are effected by means of the outputs
25 from these sensors. The opening and closing of the
sensor 34 (sensor 34 is shown in the opened state in
Fig. 6) turns a relay 59 on and off through the opening
and closing of a switching circuit 34'. The opening and
113f~5~3
closing action of the sensor 35 (sensor 35 is shown in
the opened state in Fig. 6) causes a switching of a
switching circuit 35' for chan~ing the rotational direction
of the motor 53 between the forward and reverse positions.
The opening and closing motion of the sensor 42 (sensor
42 is shown in the opened state in Fig. 6) causes an
opening and closing of a switching circuit 42', thereby
to turn on and off the driving circuit for the motor 53.
Further, the opening and closing motion of the sensor 44
(sensor 44 is shown in the closed state in Fig. 6) causes
an opening and closing of a switching circuit 44' thereby
to turn a relay 59 on and off. The relay 59 has a
contact 59a which is adapted to make a contact with
terminals 59' and 59" in the "on" and "off" state of the
relay 59.
A reference numeral 57 denotes a control
rO f ~
circuit for controlling the rotatinal speed to the drum
2. This control circuit is adapted to control the
frequency of the electric power supply to switch the
rotational speed of the drum such that t~e drum is
rotated at the main scanning speed durTng the cGmmunica-
tion and is decelerated to a low speed for permitting
the detaching and attaching of the sheet irrlmedi2tGly
~fter the completion of the communicatlon.
A reference numeral 58 denotes a control
circuit which is adapted to close a switching circuit 58'
and to open another switching circuit 53rl only when the
drum is rotating at the main scanning speed. As will be
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~13~i553
1 understood from the description which will be given
later, the above-mentioned switches are in the state as
shown in Fig. 8 when the facsimile communication is over.
Therefore, a capacitor 50 is charged when the drum is
rotating at a low speed.
,, O~e~ 0~
Upong~detcct of the notch 43a of the rotary
shutter 43, the sensor 44 acts to open the switching
circuit 44' thereby to turn the relay 59 off, so that
the contact 59a is switched from the terminal 59' to
the terminal 59" to break the driving circuit for the
motor 53. Simultaneously, the capacitor 60 makes a
discharge to effect a D-C braking on the motor 53 so
that the drum 2 is stopped instantaneously. Since a
constant positional relationship is preserved between
the drum 2 and the rotary shutter 43, the drum is
stopped at a constant position with an extremely small
error. If the drum is rotated unintentionally out of
the above-mentioned constant position due to a reason
such as movement of the facsimile device or the like,
after making a stop at the constant position, the state
as shown in Fig. 8 is recovered because the shutter 43
closes the sensor 44 as a result of the rotatior. of the
drum 2. This condition is maintained as long as the
electric power supply to the device is contlnued.
Hereinafter, the operation for automatically
attaching and detaching the sheet to and from the drum 2
will be described with specific reference to Figs. 3, 4
and Figs. 6 to 15.
113&i553
1 Referring first to Figs. 3, 4, 9 and 10, a
sheet 61 is placed by ~the facsimile operator on the table
4 with its leading end received by the gap 25a of the
bar 25 for clamping the leading end. Then, the operator
closes the drum cover 3. In the course of closing of
the drum cover 3, the pin 8a takes a position denoted by
a numeral 8a' when the drum cover is moved to the position
denoted by a numeral 3', as shown in Fig. 9. Accordingly,
the arm 8 is rotated to take the position 8' and the pin
8b is moved to a position 8b'. As a result of the
movement of the pin 8b to the position 8b', the bar-
actuating lever 9 is moved to a position 9' by the force
exerted by the spring 11, so that the pin 9a is moved
to a position 9a'. In consequence, the arm 23 is moved
to a position 23' so that the pins 21a, 21b of the bracket
21 are moved to positions 21a' and 21b', respectively.
The displaced pin 21b' then permits the spring 28 to
move the arm 27 to the position denoted by a numeral 27',
so that the bar 25 is moved to position denoted by a
numeral 25' to clamp the leading end of the sheet 61.
Meanwhile, the arm 23' causes a movement of the bar 18
to a position 18', through the action of the pin 21a'
and the bracket 21'. However, since the pin 9a' retains
the arm 23', the bar 18' is held still apart from the
drum 2.
Then, as the drum cover 3 is moved to a full
closed position 3", the pin 8a, the arm 8 and the ?in 8b
are moved further to the positions 8a", 8" and 8b".
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113~553
1 Since the shaft 7 makes an angular displacement by an
angle equal to that of the arm 8 to the position 8't, the `-
members on the rightside wall 7 shown in Fig. 6 are all
moved to the position shown in Fig. 11. Namely, the dog
30, the shutter 32, and the cam 29 are moved to positions
30', 32' and 29', respectively. The cam 29-in turn
causes the drum stop lever 37 and the shutter 41 to
positions 37', 41'. The rotation of the shaft 7 displaces
the cam 45 on the leftside wall 5 shown in Fig. 7 to a
position 45'. Since the axis 46a of the spring 46 has
been moved beyond the dead point 47, the cam 45 is
biased toward a position 45". However, the cam 45 is
stopped at the position 45' because it is retained by
the kicker lever 48.
Hereinafter, a description will be made as to
the operation of sensors and control circuit in the course
of the closing motion of the drum cover 3.
Referring to Figs. 6 and 11, the sensor 35 is
closed during the movement of the shutter 32 to a position
32'. More specifically, the sensor 35 is closed at a
moment at which the drum cover 3 shown in Fig. 9 takes a
position intermediate between the positions 3' and 3",
i.e. when the arm 8 takes a position between the positions
8' and 8". When the shutter 41 takes the position 41',
the notch 41a' of the latter acts to open the sensor 42.
This opening of the sensor 42 is made after the closing
of the sensor 35.
Referring now to Fig. 13 showing the state of
- 13 -
113~5S3
1 operation of the sensors and control circuit, the
connection for the forward rotation (direction of arrow
62 in Fig. 7) of the motor 53 is completed by the
switching circuit 35' as a result of the closing of the
sensor 35. As the sensor 42 is opened subsequently, the
switching circuit 42' is closed to start the driving of
the motor 53, which in turn causes the rotation of the
drum 2 to initiate the winding of the sheet as denoted
by 61' in Fig. 10 round the drum 2.
In this state, the retainer 19 is kept
unmoved irrespective of the rotation of the drum 2,
because the arm 23 in the position 23' is retained by
the pin 9a, so that the bar 18 in the position 18' is
kept unmoved together with the bracket 21 in the position
21'. As the drum 2 rotates further, the kicker arm 52
shown in Fig. 7 is rotated in the direction of the arrow
to a position 52' to move the kicker lever 48 to a
position 48' thereby to release the cam 45 in the position
45'. The cam 45 released from the kicker lever 48 is
moved by the force of the spring 46 to a position 45"
to hold the kicker lever 48 at a position 48".
Referring now to Figs. 9 and 12, the movement
of the cam 45 to the position 45" (Fig. 7) in turn
causes movemen's of the arm 8 and, accordingly, the pins
8a, 8b to positions 8"' and 8a"' through the rotation of
the shaf~ 7. The pin 8a in turn drives the bracket 13
and the pinch rollers 12 to positions 13' and 12',
respectively. Meanwhile, the pin 8b drives the
_ lL. _
113~553
1 bar-actuating lever 9 to a posltion 9" and, hence, the
pin 9a to a position 9a". Also, the arm 23" and the
bracket 21 are moved to positions 23" and 21" so that
/ower~
the clamp bar 18 is ~uwl~d from the position 18' to a
position 18" thereby to clamp the trailing end of the
sheet 61. Simultaneously, since the pin 9a-has released
the arm 23, the retainer 19, the bracket 21 taking the
position 21" and the bar 18 taking the position 18" are
allowed to rotate together with the drum.
In this state, the pin 39 has been moved to
the position shown in Fig. 12 to engage the groove 21c
of the bracket 21 taking the position 21", so that a
constant positional relationship is established between
the bar 18 in the position 18" and the bar 25 taking
the position 25'.
The movement of the cam 45 to the position 45"
shown in Fig. 7 simultaneously causes a movement of the
dog 30 from the position 30' to a position 30" which in
turn drives the cam 29, the drum stopper 37, the shutter
41, the notch 41a and the shutter 32 from positisns 29',
37', 41', 41a' and 32' to positions 29", 37" 41", 41a"
and 32", respectively. Hereinafter, the description
proceeds also with reference to Fig. 13.
During the operation stated above, the sensor
42 is closed to open the switching circult 42' to stop
the power supply to the motor 53. Subsequentl~, the
sensor 34 is closed to permit the closing of the switch-
ing circuit 34'. The winding (attaching) of the sheet 61
1~365~3
1 round the drum 2 is thus completed. At this moment, the
rotary shutter 43 is situated at a position (See Fig. 14)
for opening the sensor 44, so that the switching circuit
44' is kept opened. Therefore, the relay 59 is held
still in off state to leave the contact 59a on the
terminal 59", so that the motor 53 is not driven.
Immediately thereafter, however, the inertia
of rotation of the drum 2 rotates the shutter 43 in the
direction of arrow 63 so that the sensor 44 is closed,
which in turn causes the switching circuit 44' to close
to turn the relay 59 on. This state is shown in Fig. 8.
As a result, the aforementioned D-C braking circuit is
activated and the rotary shutter 43 is stopped at the
position shown in Fig. 14 after making a further one
f~e~rd~'~ /~f
full rotation. Aeoordill~ly, the drum carrying the sheet
is stopped at a position shown in Fig. 12 after making
a rotation.
In ordinary use, the drum is then rotated at
the main scanning speed by the operation of the control
circuit as shown in Fig. 8, while a scanning base ~4
shown-in Fig. 3 is driven at a sub-scanning s~eed to make
a facsimile communication.
As the facsimile communication is Gver, the
D-C braking circuit is actuated as stated before, so
that the drum 12 1s stopped in the position shown in Fig.
12, i.e. in the state of completion of the winding, as
well as other members.
Referring again to Fig. 14, as the drum cover
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l is opened from the position 3" to the position 3, the
shutter 32 is rotated clockwise from the position 32"
together with the shaft 7 and the dog 30. This in turn
causes the sensor 34 to open. Referring also to Fig. 8,
the opening of the sensor 34 causes the switching circuit
34' to open, so that the relay 59 is turned~off to open
the ~-C braking circuit. Subsequently, the sensor 35
is opened to make the switching circuit 35' complete
the circuit for reversing the motor 53.
Meanwhile, the arm 8 and pins 8a, 8b which are
taking the positions 8"', 8a"' and 8b"' as shown in Fig.
12 are rotated clockwise together with the shaft 7, so
that the pinch roller 12 in the position 12' is pressed
against the surface of the sheet 61 because the bracket
13 in the position 13' is released from the pin 8a taking
the position 8al" . Meanwhile, the bar-actuating lever 9
in the position 9" is pressed by the pin 8b taking the
position 8b"' to rotate around the shaft 22 in the
clockwise direction to cause the pin 9a in the position
9a"' to lift the arm 23 taking the position 23".
Consequently, the bracket 21" is raised from the position
21" through the action of the pin 21a", thereby to
disengage the pin 39 from the groove 21c. Simultaneously,
the bar 18 is moved away from the position 18" on the
re /~ a sC ~r~
y 25 drum surface to rleQs~ the ~r~inl ~-end of the sheet 61.
As the drum cover is fully opened, the above-
mentioned members take positions shown in Fig. 15.
However, immediately before they are moved to the
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1 positions shown in Fig. 15, the cam 29 has been rotated
from the position 29" shown in Fig. 14 to the position
29', so that the drum stopper lever 37" has been released
from the cam 29. Consequently, the drum stop lever 37
resumes the position 37' to put its end in contact with
the outer peripheral surface of the drum stop cam 40.
Further, the shutter 41 is returned from the
position 42" to the position 42' so that the notch 41a,
which has been moved also to the position 41a', permits
the sensor 42 to open. Consequently, the switching
circuit 42' shown in Fig. 8 is closed to start the motor
53 so that the drum 2 is rotated in the direction of
the arrow 65 shown in Fig. 15 to commence the discharge
of the sheet 61 onto the table 4.
In this state, since the pin 9a has already
held the retainer 19 through the medium of the arm 23,
the bar 18 is held in the illustrated position. At the
same time, the cam 45 is returned from the position 45"
to the original position 45. However, the kicker lever
48 is not directly moved from the position 48" to the
origirial position 48, but is temporarily stopped at the
intermediate position 48', because the kicker arm 52
takes the position 52' at a moment immediately before
the commencement of the drum for discharging the sneet.
These members shown in Fig. 7 have nothing to
do with the operation for discharging the sheet.
The drum stop cam 40 in the state shown in
Fig. 14 rotates together with the drum 2 while the
~13~i553
1 latter is rotating for discharging the sheet.
Referring also to Fig. 6, the drum stopper
lever 37 is moved back from the position 37' to the
original position 37 to bring its recess into engagement
with the drum stop cam 40, just before the latter completes
one full rotation, so that the drum stop cam 40 and,
hence, the drum 2 stop to rotate. During this movement,
the shutter 41 acts to close the sensor 42 on its way
from the position 411 to the origianl position 41. As
a result of the closing of the sensor 42, the switching
circuit 42' shown in Fig. 8 is opened to stop the power
supply to the motor 53. Also, the cam 29 is moved back
from the position 29' to the original position 29. The
pin 39 shown in Fig. 15 has reached the position shown
in Fig. 3, when the drum stops to rotate. Also, the arm
27 is moved to ride the pin 21b before the drum stops to
rotate so as to commence to open the bar 25'. ~hen the
drum stops to rotate, the bar 25 has been moved from the
position 251 to the original position 25 to release the
leading end of the sheet 61.
The discharge of the sheet is thus completed,
and the sheet is returned to the position shown in Fig.
3. All members of the facsimile device have been eset
to the state ready for the receipt of new sheet, when
the sheet is returned to the position shown in Fig. 3.
As has been described, according to the
invention, there is provided a drum-scanning type
facsimile having a drum mounted rotatably, and a first
- 19 -
"` 1136S53
1 and a second bars movable toward and away from the drum
surface, the bars being adapted, when moved toward the
drum surface, to cooperate with the drum surface in
clamping therebetween the leading and trailing end of
a sheet, characterized by comprising mechanical means
and electric means adapted to operate the bars in
response to the opening and closing motion of a manually
operable drum cover, whereby the sheet placed at a
predetermined position is automatically picked up and
wound round the drum merely by a closing operation of
the drum cover, and is automatically released from the
drum merely by an opening operation of the drum cover.
It is therefore possible to automatically pick
up the sheet from a predetermined position and to wound
the same around the drum, and to release and return the
sheet to the same predetermined position, by a simple
manual operation for closing and opening the drum or the
like member.
. ~
- 20 _
