Note: Descriptions are shown in the official language in which they were submitted.
~;3~g3
--1--
M~THOD AND ARPARATUS FOR PRODUCI~& PRINTED TABS
BACKGROUND OF THE INVENTION
This invention relate6 to
electrophotographic app~ra~u~, and more particularly,
~o a me~hod and apparatu6 in which copie6 of ~elected
original6 are produced a~ printed tabs.
In producing a set of copy 6heet6, it is
oftentimes desirable to in6ert printed tab6 at
6elected intervals to produce vi6ible divi6ion6 in
the 6et. U.S. Patent Mo. 4,201~464, di6clo6e6 ~
copier which is adapted to insert copy 6eparation
sheets between succes6ive copy ~obs or ~ob portions.
The copier has a plurallty vf copy paper 6upplie6 ~nd
each ~upply can accommodaee different 6ize6 of copy
paper. There ls no di6clo6ure in thi6 patent,
however, of e means for producing printed tsbs, and
if 6eparation 6heets in the form of prlnt~d -~ab~ are
desired, they must be preprin~ed.
There is a problem in producing printed tsb6
in certain copiers in that the tab is wider than the
image area of $he photoconductor, and thu~ an imag~
~annot be placed cloæe to the edge of the tab. I~ is
known in the copier art to 6hift an image toward an
edge of a copy sheet generally equal in ~ize to the
image are~ of the photoconductor. For example, in
U.S, Patent No. 4,350,439, the 6heet feed ~ime is
varied to 6hift the margin left or right.
Altern~tively, the reproduced image can be po6itioned
by 6uitably selecting the timing for initiating the
6canning of the original. The $mage-shifting
techniques di6closed in U.S. Pstent No. 4,3509439,
are used 601ely fur margin 6hift, ~nd there ifi no
sugge6tion that 6uch techique6 could be used to solve
the problem o printing along an edge Area oi a
relatively wide copy sheet to produce ~ printed tab.
~53~3
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SUMMARY OF THE INV~NTION
It is an ob~ect o the presen~ ~nvention to
overcome the above-de~crlbed problem6 in the prior
art and to provide a novel method and apparatu~ for
producing printed tabs whlch are wider than ~h~ lm~ge
area on the photoconductor.
In accordsnce with one aspect o ~he pre6ent
invention, there is provided apparatu6 for prQducing
printed tabs, said apparatus comprising: an image
transfer member movable along B tran6port path and
having a plurality of spaced nonoverlapping imRge
areas; means for producing an image in an image area
of said transfer member ln a timed relation to the
movement thereof; means for po~itioning A tab
rel~tive to said image trsnsfer member in
~ransferable relationship therewith to receive sn
unfixed im&ge, said tab h~ving a fir6t area generally
equal in si~e to said image srea and ~ 6econd area
ou~side of said first area and along one edge of the
tab; and means for effecting the transfer of an image
~o said second area to form 8 printed ~ab.
In ~ccordance with the present invention,
there is &lso provided a method of printing on copy
sheets in an apparatu~, 6aid copy ~heets having a
flrst area and a second area out~ide said first area,
said apparatus comprising means for producing an
image on a movable image transfer member in an image
area generally equal to 6aid first Area ~nd means for
positioning a copy 6heet relative to said image
transfer member as it is moving, ~aid method
comprising the s~eps of: (A~ expo6ing an original to
produce an image in an image area; ~nd (b)
positioning a copy sheet relative to 6aid lmage srea
6uch that said second area i8 in a pofiition to
receive sald image.
~ S~ ~ ~3
In one embodiment of the present invention,
a tsb orlginal is exposed, and an ~mage of ehe
orlginal i6 produced on an ~mage tr~nsfer mDmber.
The exposure is delayed relative to the nor~al
operating cycle of the apparatu6 to 6hift the im~ge
toward an edge of the image Area on the im~ge
transfer memberD The feeding of a t~b ~nto a
position to receive the im~ge from the image tr~n~fer
member is slso del~yed to æhift the lmage into the
ed~e area of the tab. If the t&b original i6 lsrger
than the im~ge area on the im~ge transfer member, ~
reduction of the original image is effected to loc~te
all indicia on the original in the image area.
A principal sdvant~ge of the disclosed
inventlon is that sets of copy sheet6 can be produced
having prlnted t~bs lnterspersed through the ~et at
desired locstions. The sets can be produced on-line
at normal copier 6peed6, where~s previou61y, 6e~s
containing printed tabs requlred cons~der~ble time
and intervention by the oper~tor. The problem of
printing on relatively wide tabs h~s been solved,
withou~ having to enlarge the im~ge area on the
photoconductor, by shlfting the image ln~o the edge
~res of the tab. A particularly adv~ntageous wsy to
accomplish the image ehift is in the use of both
exposure delsy and delay in feeding the tab. By
using the combina~ion of these techniques, the lm~ge
shift can be ~ccomplished without large change6 in
the apparatus oper~tion cycle and feeding process.
Other features and advant~ges will become
appsrent upon reference to the Description of the
Preferred Embodiment when read in light of the
~ttached drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 i6 & ~chematic represent~tion of an
elec~rophotographic appar~tus according to the
present inventlon;
~53~9
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Flgure 2 is a block diagrsm of ~he logic and
con~rol unit of the appar~tu6 of Fig. 1 ~nd a
~chematic representation of ~he operstor control
p~nel of the appar~tus of Fig. l;
Fig. 2A i6 a perspective vlew of a printed
tab as produced by the pre6ent invention;
Flgure 3 is flow chart of the operation of
~he appAr~tus of Figure 1 in ~ tab set-up modei
Flgure 4 is a flow chart of the operstion of
the appar~tus of Figure 1 in one producing mode;
Figure 5 is a flow chart of ~he oper~tion of
the appar~tus of Figure 1 ~n a 6econd producing mode;
Figure 6 i6 a flow chsrt of the operation of
the apparatus of Figure 1 ln a le~ter to tab set-up
mode; and
Figure 7 is a flow chart of the operation of
the ~ppar~tus of Figure 1 in a third producing mode.
DESCRIPTION OF THE PREFE~RED EMBODIMENT
As used herein, "copy sheet" rePr6 to
sheets which receive an image from an originsl
document. "Tab'l refers ~o ~ copy ~heet havlng a
portion at least which is wider than the copy ~heets
it is used with; for ex~mple, the portion could be 9
inches wide, if used in ~ets of copy sheets which are
8-1/2 inches wide. Altern~tively, the t~b could be 9
inhes wide along its entire length. A "printed tabl'
refers to a tab having printing along one edge in the
wide portion thereof and which is ~dapted to serve BS
a divider in a set of copy 6heets.
With reference to Figure 1, there is 6hown
an elec~rophotographic apparatus 10 having an image
transfer member ln the iorm of a photoconductive belt
12 ~rained about rollers 14, 16, 18, 20, ~nd 22.
Belt 12 is moved iD a clockwlse direction, a
represented by arrow 24, by mean6 of a motor 26
mechanically linked to roller 22. Apparatus 10
lncludes ~n expo~ure pla~en 28 ag~inst which an
53~3
--5--
origin~l c~n be positioned in an expo~ure pos~ion
for copying. Originals are fed ~o the platen 28 by
recircul~ting document feeder 30 or by a dvcument
positioner 31.
Recirculsting document feeder 30 is located
on top of exposure platen 28 and lnclude6 a tr~y 32
for receiving a set of original6 34 in a receiving
position~ Feeder 30 circulates originsl6 in sequence
slong a path 36 from the bottom of tray 32 to
exposure platen 28 ~nd then back up to the top of the
set of originals 34 in tray 32. This i6 effected by
means of feed roller 38 which feeds the botto~most
original in tr~y 32 between guide roller 40 ~nd guide
42 onto platen 28 where the original is Etopped by a
gate 44. After exposure of the origin219 gate 44 i6
moved out of p~th 36, and rollers 50, 52, 54 9 56, ~nd
58 move the original back to the top of the 6et of
originals 34 in tray 32, As will be described in
greater detail later, as an origlnal move~ slong path
36 away from tray 32 a detector 60 generates a count
signal which is applied ~o a logic and control unit
62. A set count finger 61 is adap~ed to rest on top
of the set of orlginals 34 in tray 32 and fierve6 to
indlca~e when all of the orlginals in a set of
origin~ls 34 have been circulated by feeder 30. A
more detailed disclosure of the operation ~nd
structure of feeder 30 i~ disclo~ed in
commonly-assigned U.S. Paten~ No. 4,0g9,860.
Wi~h reference to Fig. 1, there is shown an
im~ge-producing mesns 63 which includes ~ p~ir of
fl~sh l~mps 46 and 48 for llluminat$ng an or~ginal;
upon illumination of the ori~inal, an image is
produced which is projected by a mirror 64, a len6
66, ~nd a mirror 68 onto belt 12 ~t an expo6ure
ststion 70. Lens 66 i~ supported on s carriage 69
which ifi mounted for movement by ~ motor (not ~hown~
to move lens 66 ~].ong it6 op~ical axis; len~ 66 is
~53~3
-6-
moved to change the magnification of the pro~ected
image. The maximum magnification of len6 66 i6 ~uch
that light is projec~ed over an are~ on belt 12
defined as ~n lmage area~ or ~6 a frame, which could
be, for ex~mple, 8-1/2 lnchRs wide. The terms
"leading edge" and "tr~lling edge" of the im~ge area,
as used herein, refer re6pectively to the edge of an
image area which pas~es an element ~n ~pparatus 10
fir6t and the edge which pa6ses the s~me element
last, as the image ~rea i6 moved in the direction of
arrow 24 (Fig. 1).
The 6peed of belt 12 ~nd the timing of 1~sh
lamps 46, 48, are controlled ~o locate an image on
belt 12 and to provide a sui~able distsnce between
lS im~ge areas. In advance of exposure statlon 70 is a
charging st~tion at which a coron~ ch~rger 72
Bensitizes belt 12 by applying ~n electrostatic
- charge thereon (for ex~mple, ~ negative electrostatic
charge). At exposure station 70, the pro~ected light
image dissipates the electrostatic charge at the
exposed areas of the photoconductive bel~ 12 ~o form
a la~ent electro6tatic image on belt 12 correspondlng
to the image on the origin~l.
The latent electrost~tic im~ge on belt 12 is
developed with toner at a magnetic brush developer
station 73; at station 73 a developer is spplied
which includes iron carrier particles ~nd
electroscopic toner particles with ~n elec~roststic
charge (e~g. a positlve charge~ opposite to the
charge of the latent electro6tstic image. The toner
image is then subjected to radiation by a
po6t-development erase l~mp 75 to reduce the
electr~cal stress on photoconductive belt 12 and ~o
reduce the attraction between the toner im~ge and
belt 12.
--7--
As the toner im~e on belt 12 Approsches a
transfer coron~ char~er 74, a copy ~heet ln the form
of a tab 76 is fed from a 6upply 78 or a copy sheet
77 is fed from a supply 82. Tsb 76 and copy 6heet 77
~re fed by a po~i~ioning mean~ which include~ a feed
roller 80 for tabs 76, a feed roller 84 for copy
sheets 77, and a reglstration mechani6m 86. A copy
sheet 77 or tab 76 is biased again6t mech~ni6m 86 by
the positioning mean6. Regi6tration mechani6m 86 i8
moved out of the p~th of a copy ~hee~ 77 or a t~b 76
at the appropriate polnt in the rycle of ~ppAratu6 10
to ob~ain the desired posi~ioning of 6heet 77 or t~b
76 relative to an image on belt 12. As ~hown in Fi8.
2A, a tab 76 includes a first Area 79 wh~ch ~6
6ubstantially the SAme size 88 cOpy sheet 77, for
example, 8-1/2 x 11 inches and a ~econd are~ 81
outside of area 79 for reeeiving printing ~nd which
can be, for example ~ 1/2-inch wide. Area 81 could be
extended for the length of tab 76 if ~ rectangular
tab ls desired.
In the discussion which follows, movement of
a tAb 76 through the ~pparatu6 10 ~s described, it
being understood that ~he described movem~nt would
apply equslly weli to ~ copy 6heet 77. At the proper
time in the apparatus cycle, the registration
mechanism 86 releases a tab 76 so ~hat it is moved
into registration with the toner lmage on belt 12 in
advance of corona charger 7~O Charger 74 ~erves as a
means to effect the transfer of the toner im~ge to
t~b 76 by applying a charge opposite in polarity to
that of the toner lmage. A detack charger 88
neutralizes the charge on tab 76 so ~hat it ea6ily
6ep~r~tes from belt 12 at roller 18. The tab 76
besring toner is then pss6ed through B pair of heated
fuser rollers 90 and 92 to permanently fuse the toner
image to the tab 76. After fu~ing, the tab 76 i6
transpor~ed to an upper ou~put tray 94 or to a 6ide
output tray 96.
~3
--8
Mechanlcal ~nd electric~l cleaning of
photoconductive belt 12 1~ effected a~ R cleaning
station 98 which include6 B cleaning a6~i6t erase
l~mp lO0. Lamp lO0 expose~ photoconductlve belt 12
to radiation to Rub6tantislly reduce ~ny charge
remainlng on belt 12, and ~ cleaning a~6i6t charger
102 impresses an alternating current ch~rge on belt
12 to neutralize the charge6 on untran~ferred toner
particles. A bru6h 104 remove6 any re61dual ~oner
from belt 12 so that it i6 resdy for another cycle.
Timing of ~he movement o belt 12 in
rel~tlon to the opera.lon of the vsriou~ elements of
apparatus 10, includ$ng feeder 30, i6 controlled by
means of a plur~lity of perforstlons (not shown~
along one ~ the ed~e8 of belt 12. As an example~
belt 12 csn be divided in~o ~ix image areas by ~
fir~t 6et of perforation~ and e~ch im~ge ~rea may be
6ubdlvided into 51 6ections by a second 6et of
perforation6. The relation~hip of ~he ~wo 6e~ of
perforations ~o ~he image srea on belt 12 ~6
disclo6ed ~n de~sll in commonly-a66i~ned U.S. P~tent
No. 3,gl4,047. At a fixed location along the path of
movement of belt 12~ there ~s provided a detector 106
for detec~ing belt perforations and for providing
timing pulse~ to logic and control unit 62. An
encoder 108 i6 linked to roller 22 and provide6 &
serie6 of timing pulse6 to logic snd control unit 62
which gre used in con~unction with the pul6es from
detector 106 to control the operation of copier 10.
Wi~h reference to Figure ~, there i6 shown
in grester det~$1 nn illustrative logic and control
unlt 62 which i~ connected to an opera~or control
panel 110. Logic and control unit 62 ha6 ~
programmable computer, 6uch a~ a microcompu~er, which
has & 6tored program respon6ive to inpu~ signal~ for
~equentially actuating the various elements of
~pparatus lO a~ well a6 for controlling the operation
~ ~ 3 ~ 3
oE many other Eunctions of apparatus 10 (as disclosed
in greater detail in the aforementioned U.~. Patent
No. 3,914,047). Programming oE commercially
available microprocessors, such as Intel~ Model 8085
(which along with others can be used in accordance
with the invenkion), is a conventional skill well
understood in the art. The Eollowing disclosure is
written to enable a programmer having ordinary skill
in the art to produce an appropriate control program
Eor the microprocessor. The par-ticular details of
any such program would oF course depend on the
architecture of the designated microprocessor.
As shown in Figure 2, LCU 62 includes
kemporary memory 112 which can be provided by
Read/Write Memory or Random Access Memory (RAM), a
central processing unit 114, a timing and cycle
control unit 116, and a stored program control unlt
118 which comprises a Read-Only Memory (ROM). Data
input and output are performed sequentially under
program control. Input data is applied to LCU 62
either through input signal bufEers 120 to input data
latches 122 or through an interrupt signal processor
124. The input signals are derived from operator
control panel 110, from tiny pulses such as tho~e
from detector 106 and encoder 108, and Erom various
analog to digital converters which process signals
from monitoring devices (not shown) in apparatu~ 10.
The output data and control signals are applied to
OtltpUt data storage latches 126 which provide Lnputs
to suitable output drivers 128 which are connected to
various elements of apparatus 10.
Operator control panel 110 includes a
display l62 and a plurality oE operator actuatable
switches (buttons). For example, a numerical
keyboard 130 includes ten buttons for "0"-"9"
inclusive. A "c" button 132 is used to cancel or
clear the previous instructions fed in Erom panel
110. A star "~" button L34 is actuated by the
~2~3~3
-10-
oper~or ~o indicate de~ignated originAls which ~re
~o be copied on copy sheet~ of a diferent
characteris~ic than other original~, for ex~mple,
copy 6heets in the form of tabs 76. This fuDction
will be de~cribed in greater detAil l~ter. A ~t~rt
button 136 initiates operation of appar~u~ 10 ~nd a
stop button 138 terminate6 operatlon of ~pp~ratu6 10.
Apparatu6 10 c~n be opersted in ei~her a
noncoll~te mode or a collate mode. In the noneollate
10 mode, the output of appsratus 10 is ~e~s of
uncollsted copies which mu6t either be eoll~ted
manually or collated by a ~orter (not 6hown). In the
collate mode, a set of coll~ted copies is produced.
If the noncollate mode i~ desired, ~ but~on 140 i6
depressed; and if the coll~te mode i6 desired, a
button 142 is depre~sed. In the noncollate mode,
each original in the set of originals 34 in feeder 30
is fed ind~vidu~lly to copier pl~ten 28 where the
appar~tus 10 m~kes the number of copie~ reque~ted by
the oper~tor before mAking copies of the next
origin&l. On the other h~nd, in the collate mode,
e~ch original in ~ 6et of originAls 34 is
sequenti~lly copied, ~nd the set of originRls 34 i6
recycled until the number of copies reque6ted is
completed.
Originals which are fed to exposure pl~ten
28 may have imBgeS on two 6ide6 (duplex) or m~y have
images on only one side (6implex). Similarly, the
copies which ~re produced by ~ppar~tu6 10 may h~ve
images on either one or two ~ides of the copy 6heet.
Thus, if 6implex output i6 de6ired, but~on 144 is
ac~uated. If duplex output i6 de8lred, the operBtor
would either depre~s a button 146 (if one-fiided
ori~inal6 were placed in feeder 30) or a button 148
if two-slded original~ were pl~ced in feeder 30.
App~r~tus 10 mBy ~180 be opersted in ~ cover
insertion ~ode in which 6pecial copy sheet6 m~y be
~5~
provided from a ~upply to the front and/or back of
the copy set. If covers ~re not reque~ed9 then the
operator would depre6s B button 150. Ru~tons 152,
154, and 156 respectlvely i~dicate to ~he copier
whether covers are reque6ted on the front, back, or
both ront ~nd back of a copy set. Bu~ton 158 i6
actuated to effec~ output of copies to ~ide output
tray 96, while button 160 is actuated to effect
output of copies to upper output tray 94. Other
buttons (not ~hown) mRy sl~o be provided on operator
control panel 110 to regulate the exposure of n copy,
to selec~ reduction or enlargement of an original,
etc. Display 162 ~hows messages indicsting to ~he
operator v~rious condi~ion6 which occur in spparatus
10, for example, the mode ~he app~ratus i6 opera~ing
in, what action should be taken next, where ~ams may
be located, etc.
Wi~h reference to Flgures 3 ~hrough 7, the
operstion of apperatu~ 10 will now be de6crlbed in
accordance with th present invention in whlch
printed ~abs ~re produced. In Fig. 3, there i8 ~hown
~ flow chart for a ~ab set-up mode. In thi~ mode,
tabs 76 are placed in supply 78, snd copy 6hee~s 77
are placed in 6upply 82. Sheets 77 from supply 82
may, for example, be 6heets having a white color ~nd
of typewriter weight 6uch a6 16-lb. bond paper. To
enter the tab set-up mode, the operator mu6t pre6s
888 (~) on panel 110. Upon pres6ing 888(*) the
operator will be prompted with ~n introductory
message on display 162 "TAB PRINTING MODE, PRESS
LIGHTEN FOR SELECTIONS, OR STOP TO EXIT." The
operator uses a "lighten copies" button 147 to 6croll
through the various ~b prlnting modes available.
~hen the desired mode is displayed, a "normsl copy"
bu~ton 149 ls pu~hed to select that p~rticular mode.
Thu~, if tab to t~b is requested in which 9 inch
originals are reproduced on 9 inch t~bs 76, ~he
~;253~9R3
-12-
apparatu~ 10 will function as ~hown ~n Fi~ure 4; lf
tab ~o letter 61ze i6 6elec~ed, in which 9 inch
orlginals sre reproduced on 8-1/2 inch copy ~heet~,
apparatu6 10 will function a~ 6hown in F~gure 5, ~nd
lf it i6 desired to make printed t~b~ from 8 1/2 wide
or~ginals u6ing feeder 30, the appar~tu~ 10 will
function as shown in Figure 7.
As shown in Figure 4, when it is desired to
produce printed tab~ from 9 inch original6, a
reduction of 94% must be effected to fi~ the
projec~ed image in the image area of belt 12. Also,
the exposure of the original is delayed 6ufflciently
to 6hift the image approximately 0.25 inche6 toward
the trailing edge of the copy. To correctly place
the image on the tab6 76, the feeding of ~ t~b 76
from 6upply 78 i6 del~yed eufficiently by mech~nl~m
86 to ~ccomplish a second 0.25 inch shlft of the
- image ~nd thereby produc~ ~he printed ~ab w~th the
image located 6uch that the image i~ visible along
ehe edge when interspersed in a 6et of copy 6heet6
77. The reduction, image 6hift, and delayed eed are
effected automatically by LCU 62 in accord~nce with
the mode ~elected.
As shown in Figure 5, the 8 1l2 inch copy
sheets from 9 inch originals cRn be produced, u6ing
94% reduction and top exit. The 9 inch original6 are
fed manuslly u~ing document po6itioner 31.
~ separste set-up mode (Fig. 6) i6 used when
9 inch tabs are desired rom 8-1/2 inch original6
(letter size) usin~ feeder 30. In the fir6t step of
the letter to tab set-up mode, the operator ~elect6
eikher the 6implex-duplex or the simplex-6implex mode
for the appara~us 10 by depres6~ng either button 144
or button 146. Thu6, the oper~tor indicate6 whether
two-6ided copy i~ to be produced and sl60 lndicates
whether the feeder 30 1~ to be operated in a colla~e
or noncoll~te mode. For purpo6es o illu6tration, lt
-13-
will be assumed that a simplex set of orlginals 34 are
placed in tray 32 of feeder 30, and that only one copy
of the set of originals 3~ is to b~ made.
The next step is for the operator to place
the set of originals 34 in tray 32 of fee~er 30 so
that the pages are Eacing up with the last original in
the set on the bottom and the Eirst original on top.
The image inEormation to be placed on the tab should
be towards the left hand edge of the originals. Set
count Einger 61 is initially on top of the first
original. After the operator has entered the number
of copies requested the "1" 'button is depressed to
place feeder 30 under operator control so that each
time the start button 136 is depressed, feeder 30
feeds the lowermost original past detector 60, around
a circulation loop and back up onto the top of the set
of origlnals 34. Detector 60 sends a copy count
signal to be stored in temporary memory 112, and the
circulated original is visible to the operator on top
of the set. The operator continues to press start
button 136 to sequentially circulate originals back to
the top of the set until an original arrives which is
to be copied onto a tab 76; for this original, the
operator presses the "~" button 134 which enters lnto
the temporary memory 112 the location of such original
within the set. ~'he operator continues to press the
start 'button 136 and to designate any further
originals which are to be copied onto tabs 76. When
the originals are back in the starting order, the
letter to tab set-up mode is complete.
After the letter to tab set-up mode has been
completed, the apparakus 10 is prepared to operate as
shown in Figure 7. The operator pushes start button
136 to initiate copying. Apparatus 10 may also be
programmed to start automatically (auto--start) after a
certain delay. In either event, apparatus 10 is
started and feeder 30 sequentially circulates
originals from tray 32 to exposure platen 28. After
3 ~ 3
-14
each cir~ulHtion of an ori~in~l, the copy count
detector 60 sends a 61gnal to logic and co~erol unlt
62 which de~ermines whether or not ~he origlnal ~ust
fed was an original for a tab 76. If noe, ~ copy
sheet i6 fed from lower supply 82. If the originel
~ust fed is a tab original, the apparutu6 10 is
programmed to ~kip a frame, i.e., form no image in
the image area, before the origi~l iB exposed by
flash l~mps 46 and 48; the ~ctua~ion of fl~6h l~mp6
46 and 48 ls delayed relative to the actuation point
in the operating cycle for B COpy sheet 77 to ~hif t
the image toward the trsiling ~dge of the image
area. A frame is filso ~kipped af~er the exposed
frsme; the 6klpped fr~me before the expo6ure of the
tab original and ehe sk~pped frame after expo~ure
facilitate the conveying of ~he relatively wide tab
76 through ~pparatus 10~ A ~ab 76 i8 fed from upper
supply 78, and the feeding i6 delayed to ~hift the
imsge on belt 12 toward the erailing edge of t~b 76
and thereby locate the lmage on area 81 of eab 76.
The originals are recirculated ~equentially one at a
time from receiving tray ~2 to expo6ure plHten 28 and
back to the top of receivlng tr~y 32, with de~ign~ted
originals being copied onto t~bs 76 from ~upply 78
and nondesignated originals being copied on copy
sheet 77 from supply 82. When the uppermo6t original
~s fed onto platen 28, ~et count finger 61 ~ndic~tes
to LCU 62 that the set of originals 34 h~s been
circulated and the original ~ust fed i6 the fir6t
original in the 6et. Since only one copy hs~ been
requested, the copier ~ob i~ completed, ~nd appar~tu6
10 is turned off.
This invention ha6 been de6cribed in detail
with particular reference to a preferred embodiment
thereof, but ~t will be understood that v~riation6
and modifications c~n be effected within the spirlt
~nd ~cope of the invention. For exsmple, it will be
apparent tha~, wi~.h 6uitAble modiflc~tion~ to
~53 ~3
-15-
appsratus 10, the desired lmage ~hift could be
accomplished by sdvancing the expo~ure ~nd the
feeding of a tab 76.
