EP0046675B1 - Système de reproduction et procédé pour la fabrication de copies - Google Patents

Système de reproduction et procédé pour la fabrication de copies Download PDF

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Publication number
EP0046675B1
EP0046675B1 EP81303835A EP81303835A EP0046675B1 EP 0046675 B1 EP0046675 B1 EP 0046675B1 EP 81303835 A EP81303835 A EP 81303835A EP 81303835 A EP81303835 A EP 81303835A EP 0046675 B1 EP0046675 B1 EP 0046675B1
Authority
EP
European Patent Office
Prior art keywords
document
sheets
sheet
copy
array
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81303835A
Other languages
German (de)
English (en)
Other versions
EP0046675A2 (fr
EP0046675A3 (en
Inventor
Stephen A. Rhinehart
Kenneth W. Laskowski
James E. Britt
Jeffrey L. Sisson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xerox Corp
Original Assignee
Xerox Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of EP0046675A2 publication Critical patent/EP0046675A2/fr
Publication of EP0046675A3 publication Critical patent/EP0046675A3/en
Application granted granted Critical
Publication of EP0046675B1 publication Critical patent/EP0046675B1/fr
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6538—Devices for collating sheet copy material, e.g. sorters, control, copies in staples form
    • G03G15/6541—Binding sets of sheets, e.g. by stapling, glueing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42C—BOOKBINDING
    • B42C1/00—Collating or gathering sheets combined with processes for permanently attaching together sheets or signatures or for interposing inserts
    • B42C1/12—Machines for both collating or gathering and permanently attaching together the sheets or signatures
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/60—Apparatus which relate to the handling of originals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/10—Selective handling processes
    • B65H2301/16—Selective handling processes of discharge in bins, stacking, collating or gathering
    • B65H2301/163—Bound or non bound, e.g. stapled or non stapled stacking mode
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00172—Apparatus for electrophotographic processes relative to the original handling
    • G03G2215/00177—Apparatus for electrophotographic processes relative to the original handling for scanning
    • G03G2215/00181—Apparatus for electrophotographic processes relative to the original handling for scanning concerning the original's state of motion
    • G03G2215/00185—Apparatus for electrophotographic processes relative to the original handling for scanning concerning the original's state of motion original at rest
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00789—Adding properties or qualities to the copy medium
    • G03G2215/00822—Binder, e.g. glueing device
    • G03G2215/00827—Stapler
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00886—Sorting or discharging
    • G03G2215/0089—Shifting jobs

Definitions

  • This invention relates to a reproduction system for producing copies of a set of document sheets, having a document handling apparatus adapted to transport individual document sheets from a supply stack to an exposure station to effect multiple exposures of the document sheets before returning the same to the supply stack, and a processor for reproducing copy sheets of the exposed document sheets. It also relates to a method of producing bound sets of copy sheets of a set of document sheets.
  • a finishing device such as a stitcher or stapler is activated to bind the set.
  • These systems are of the pre-collation type wherein the document sheets are pre-collated in the document handling apparatus prior to commencement of a reproduction run.
  • the output for the reproduction machine will likewise be pre-collated in sets corresponding to the sequenced numbered document set in the document handling apparatus.
  • the copy sheets are collected in collated sets as they are sequentially produced so that binding may be effected without the interaction of additional devices.
  • Such systems are described in US-A-4,134,672.
  • a collator- stapler mechanism is disclosed as having a single array of collating bins which are held in fixed position while a travelling clamp moves along to pick up a copy set from each bin and to convey the same to a first jogger and then a stapler.
  • US-A-4145037 discloses a collator-sorter using an array of sorter bins indexible vertically past an input location at which copy sheets enter the sorter to be fed into the bins in either collated sets or batches.
  • Each bin includes a sheet feeder for selective transport of the bin contents to an external receiving station.
  • the reproduction system of the present invention is as claimed in the appended claims and includes means for exposing each document sheet as many times as selected, or up to the number of bins, whichever is the lesser, and for feeding collated sets of the finishing apparatus, while succeeding copy sheets are still being fed into the sorter.
  • the present invention contemplates the concept of utilizing post-collation rather than pre-collation.
  • the inventive arrangement utilizes document handling wherein a predetermined number of light images are produced for each document sheet, say for example, of page one of a multi-page document, before a successive document sheet, perhaps page two of the document, is likewise imaged. This sequencing in turn may be repeated many more times if a very large number of copy sets are to be reproduced. In this manner, the mechanical movements involved in document handling are held to a minimum.
  • a single array of collecting bins or sorter is positioned and vertically moved in either direction to receive the copy sheet output for collating the copy sheets into collated sets, if the system has been programmed for the sets mode of operation or into stacks if in the stacks mode of operation.
  • the bin array or sorter in effect serves as a buffer in the production of finished copy sets when in the sets mode of operation.
  • a finishing device such as a stitcher or stapler is positioned and activated to apply a staple to each set as it is completed.
  • the sorter In the stacks mode of operation, the sorter is utilized to collect copy sheets in stacks, that is, each bin collects copy sheets of a single document sheet produced.
  • an output device such as sorter bins in combination with a finishing device.
  • Present day machines on the market such as the Xerox duplication machine labeled the 9200@ Duplicator marketed by Xerox Corporation of Stam- ford, Connecticut, utilizes a document handler as an input device which exposes as many copies of a single document sheet at a time as is appropriate before starting on the next document sheet.
  • the collected collated sheets must be manually removed from the array and transported to a finishing device whereat stitching or stapling is provided. This arrangement for producing finished copy sets seriously limits the throughput for the entire system.
  • the invention also provides a method of producing bound sets of copy sheets of a set of document sheets.
  • the printing system is preferably of the xerographic type as one including a xerographic processor 11, and a document handling apparatus 12.
  • the processor 11 is the same as the processor in the commercial embodiment of the Xerox duplicators, models 9200@ and 9400@, which utilizes flash, full-frame exposure, for very high speed production.
  • the document handling apparatus 12 is the same as those used in the same machines. It will be understood that other types of xerographic processor and multiple exposure document handling apparatus may be utilized.
  • a finishing station 13 Operating in conjunction with the processor 11 and apparatus 12 is a finishing station 13 and thereby forms the reproduction system shown in Figure 1.
  • a light image of an original to be reproduced is projected onto the sensitized surface of a xerographic photosensitive surface to form an electrostatic latent image thereon.
  • the latent image is developed with toner material to form a xerographic powder image corresponding to the latent image on the photosensitive surface.
  • the powder image is then electrostatically transferred to a record material such as a sheet of paper or the like to which it may be fused by a fusing device whereby the powder image is caused to adhere permanently to the surface of the record material.
  • the xerographic process 11 is arranged as a self-contained unit having all of its processing stations located in a unitary enclosure or cabinet.
  • the processor includes an exposure station at which an original to be reproduced is positioned on a glass exposure platen 14 for projection onto a photosensitive surface in the form of a xerographic belt 15.
  • the original or set of individual document sheets is selectively transported by the document feed apparatus 12 one document sheet at a time to the platen 14 for exposure. After a predetermined number of exposures of each document sheet is made, the same is returned to the top of the set until the entire set has been copied.
  • a suitable document handling apparatus of this type is described in US-A-3,944,794.
  • Imaging light rays from each of the document sheets, which is flash illuminated by an illumination system 18 having suitable lamps 19, are projected onto the xerographic belt 15.
  • the lamps 19 are connected to a suitable flashing circuit (not shown) which is controlled by the programmer for the processor in timed sequence, and in accordance with the program the operator has preset in the machine. Further details in this regard are not necessary since the Xerox 9400@ reproduction machine operates in this manner and is well known.
  • the xerographic belt 15 is mounted for movement around three parallel arranged rollers 24, 25, 26 suitably mounted in the processor 11.
  • the belt is continuously driven by a suitable motor (not shown) and at an appropriate speed.
  • the exposure of the belt to the imaging light rays from a document discharges the photoconductive layer in the area struck by light whereby there remains on the belt an electrostatic latent image corresponding to the light image projected from the document.
  • the electrostatic latent image passes a developing station at which there is positioned a developer apparatus 27 for developing the electrostatic latent image.
  • the powdered image is moved to an image transfer station 28 where the developed image is transferred to a support surface, normally a sheet of copy paper, brought from a main or auxiliary paper tray 29, 30, respectively, as will appear.
  • a support surface normally a sheet of copy paper
  • Each sheet is conveyed to the transfer station by a conveyor 31 which cooperates with sheet registration fingers 32 (only one shown). These fingers rotate in a counterclockwise direction, as shown in Figure 2, and engage the leading edge of a sheet, being adapted to effect the accurate timing and positioning of a sheet relative to the movement of a developed image on the belt 15 and the other timed events in reproduction processing. Further details of the timing relationships and related structure and events are described in US-A-3,790, 270; 3,796,486; and 3,917,396.
  • the sheet is moved in synchronism with the movement of the belt 15,. and passes between a transfer roller 33 and the belt 15 at the transfer station. After transfer, the sheet of paper is stripped off the belt 15 and transported by a vacuum conveyor 34 in an inverted condition to a fusing station where a fuser device 35 is positioned to receive the sheet of paper for fusing the powder thereon. After fusing, the sheet is eventually transported to a finisher station to be described hereinafter either to be stapled in copy sets or merely to be separated into sets without binding.
  • the system comprising the processor 11 and the document handling apparatus 12 is under control of a programmer P which permits an operator various options: to turn the entire system ON or OFF; to program the reproduction system for a desired number of reproductions to be made of each original document sheet or set; to select whether simplex or duplex copies are to be made; to select a desired output arrangement, that is, sets mode or stacks mode, stapled or unstapled; to select one of a plurality of paper trays; to condition the machine for the type of document, that is, whether one-sided or two-sided, to select a copy size reduction mode, and other desirable functions.
  • a programmer P which permits an operator various options: to turn the entire system ON or OFF; to program the reproduction system for a desired number of reproductions to be made of each original document sheet or set; to select whether simplex or duplex copies are to be made; to select a desired output arrangement, that is, sets mode or stacks mode, stapled or unstapled; to select one of a plurality of paper trays; to condition the
  • the programmer P also includes a controller which provides all operational timing and synchronization between the processor 11 and all of its xerographic processing functions, and system control functions, the automatic events to be described hereinafter.
  • the controller may include any suitable microprocessor having a CPU and the appropriate machine clock, but preferably the processor is one similar to the Intel 8080 microprocessor manufactured by the Intel Corporation, Santa Clara, California, and having sufficient ROM's and RAM's for all of the necessary functions in the reproduction system.
  • Main paper tray 29 includes a suitable elevator type base 36 on which a supply of sheets rests, base 36 being supported for automatic up and down movement by suitable means (not shown) designed to maintain paper feed belt 37 in operative contact with the topmost one of the sheets on the elevator 36.
  • the belt 37 is operated intermittently in timed relationship to spacing of images on the photoreceptor belt 15 and serves to advance the topmost sheet from the supply stack 29 to the main paper supply transport 31.
  • the auxiliary tray 30, in the exemplary arrangement shown, is arranged above main tray 29 and includes a suitable elevator type base 38 on which a supply of sheets may be provided.
  • suitable means (not shown) are provided to raise base 38 of auxiliary tray 30 as the supply of sheets thereon are used up so as to maintain the paper feed belt 39 in operative contact with the topmost sheet.
  • the paper feed belt 39 which is intermittently driven in the same manner as main tray feed belt 37, advances one sheet at a time to an auxiliary paper supply transport 40.
  • the transport 40 is suitably driven by a drive system (not shown) and is disposed to discharge sheets drawn from auxiliary tray 30 onto the operating run of main supply transport 31.
  • the sheets from auxiliary tray 30 are thereafter fed to the transfer station.
  • Guides 41 serve to maintain the sheets in driving contact with the auxiliary paper supply transport 40 during movement therealong.
  • copy sheets leaving the processor 11 after exiting the fuser apparatus 35 are conveyed to an exit slot 50 by eay of transports 51, 52, if the reproduction system is set for simplex (or one-sided) copying. If the system has been programmed for duplex (or two-sided) copying, copy sheets will be directed to the auxiliary tray 30. If the latter mode of operation is selected, copy sheets conveyed by the transport 51 are intercepted by a deflector 54 which is adapted for movement into the sheet path. When the deflector 54 is in the interrupt function, the copy sheets are carried around a roller 55 and through the nip formed by this roller and a cooperating roller 56.
  • the sheet is advanced by rollers 55, 56 between an upper sheet guide baffle 57 and a lower sheet guide baffle 58 to a second roller pair 59, 60 which further advances the sheet to a transport mechanism 61 which carries the sheet to the auxiliary paper tray 30.
  • the paper handling mechanism for the main tray 29 may be inactivated and the paper handling mechanism for the auxiliary tray 30 activated. It should be understood that in following the paper path around roller 55 and between roller 59, 60, the copy sheets are turned over, i.e., the printed material is on the top of the sheets in the tray 30.
  • the sheets from the tray 30 are fed through the reproduction machine by means of the feed belt 39 and the transport 40 for copying on the blank side of the sheet in the same manner as described heretofore.
  • the reproduction system being programmed for the duplex mode, and after completion of the correspondingly programmed number of one-sided sheets, reenergization of the system also produces the raising of a sheet stop 65 into the paper path between the upper guide baffle 57 and the lower guide baffle 58.
  • the feed roller 59 is mounted on the upper baffle 57 to be raised therewith during the phase of duplex copying. In this manner, the feed roller 59 will be displaced away from lower feed roller 60 so that papers fed therebetween are not forwarded thereby.
  • the sheet stop 65 is formed of a ring-shaped body of resilient material compliant enough to resume its circular shape, thereby effecting the insertion of a sheet into the nip formed between roll 56 and a cooperating roll 66, the trailing edge of the sheet being carried by roll 56 into the nip.
  • the rolls 56 and 66 are formed of a high friction material, such as polyurethane foam, to ensure positive feeding of a sheet travelling toward stop 65, and positive feeding of the sheet travelling away from stop against the drag force generated between two sheets which may be in the inverter area at the same time travelling in opposite directions.
  • the purpose of the stop 65 and the cooperating action of the rollers 56, 66 is to invert each copy sheet, while production is in the duplex mode, so that the odd-numbered page on a copy sheet reaching the exit slot 50 is on the bottom of the sheet.
  • the document handling apparatus 12 serves to feed one document sheet at a time from a supply of.document sheets D into copying position on the platen 14 where a single exposure if only one copy set is programmed, or a plurality of exposures may be made. Following exposure one or more times, each document sheet is automatically returned to the document supply and the next document sheet, if any, is brought into the exposure position on plate 14. As will appear, document sheets returned to the supply stack may be recycled by the apparatus 12 or simply removed by the user when the copying program is completed.
  • the document handling apparatus 12 includes base section 70, the lower end of which swingably supports, by means of a shaft 71, matching left and right hand tray members 72.
  • the trays 72 are substantially U-shaped when seen in cross-section, each having a base 73, which are shown cut away at the upper ends thereof to accommodate a document separator/feed roll 74.
  • the trays are adjustable along shaft 71 to accommodate various sized documents.
  • the document separator roller 74 is rotatably supported on a drive shaft 75 under the base section 70 such that a portion of the periphery of the roller projects into the document tray area, the base 70 being suitably apertured to accommodate the separator roller.
  • the shaft 75 is supported for rotation and driven by a continuously driven motor M through suitable pulleys and belts (not shown) in the direction shown by the solid line arrow of Figure 3.
  • a solenoid clutch SOL-1 drivingly connects the motor M to the separator 74 in response to a signal from the machine logic in timed sequence in accordance with the programming arrangement in the logic.
  • a pair of document limiting rollers 76, 77 are disposed on the downstream side of separator roller 74 and function to prevent passage of more than one document sheet at a time.
  • the upper limiting roller 76 is arranged to be driven by the lower limiting roller 77 so long as friction developed between rollers 76, 77 remains above a predetermined setting.
  • the upper roller 76 is turned in a document-rejecting direction, as shown by the dotted line arrow in Figure 3, by a suitable drive means (not shown).
  • Document sheets emerging from limiting rollers 76, 77 are carried forward by intermediate rollers underneath a curved document guide 78 to a platen transport belt conveyor 79 which in turn carries the document onto the platen 14.
  • a register edge 80 is provided across the inlet side to platen 14, and serves to register or locate document sheets in pre-set position on platen 14 for exposure thereof.
  • the movement of the platen transport belt 79 is reversed for this purpose after the document sheet has been carried past the register 80, reversal of transport 79 serving to move the document sheet backwards to bring the document sheet trailing edge into abutment with register edge 80.
  • the platen transport belt 79 is again operated in reverse to move the document sheet backwards off the platen 14, the register edge 80 being retracted for this purpose by a suitable means (not shown).
  • the document guide fingers 81 deflect or guide the returning document upwardly into the nip of a first return transport roller pair 82, which carry the returning document sheet between return guides 83 and into the nip of a second return transport roller pair 84 and back into tray members 72.
  • a displaceable bail or separator bar 85 is provided substantially opposite to and above the feed roller 74.
  • the bar 85 is supported from a rockable cross shaft 86 which is suitably journaled in the supporting framework of document apparatus 12 with the base section 70 thereof being suitably apertured to permit disposition of the bail support arms 87 therethrough.
  • Means are provided to turn the shaft 86 selectively and raise the bar 85 out from under the document sheets D' resting thereupon, and thereafter return the bar 85 back onto the topmost one of the document sheets in the supply. All of the rollers heretofore described are driven by the motor M by way of suitable pulleys and belts (not shown). Since the particular document apparatus 12 is a commercial device (being a part of Xerox Corporation's product labelled the 9200° Duplicator) and is adequately described in US ⁇ A ⁇ 3,944,794, further description thereof will not be included herein.
  • the document apparatus 12 includes a document tray adapted for supporting a stack comprising a plurality of document sheets in numbered sequence with page one of the multi-page document on the bottom of the stack. Since the illustrated document handling apparatus is of the bottom feeder type, page one will be the first document sheet imaged, and so on.
  • copy sheets exiting the fuser device 35 are directly conveyed by the transports 51, 52 to and through the exit slot 50 positioned at one end of the housing for the xerographic processor 11.
  • the finishing station 13 which comprises a sorting mechanism, a stapler apparatus, and an output elevator/conveyor system.
  • each sheet is positioned upon a transport 92 to be further conveyed generally along the same horizontal plane as its previous path to a fixed receiving point or station 93.
  • the transport includes a movable endless transport belt 94 upon which each sheet is placed and a plurality of loosely retained rotatable balls 95 which rest along the belt 94 by gravity and which coact with the belt to convey sheets therebetween.
  • the belt 94 is driven by a motor and suitable gearing and pulleys (not shown) at a speed slightly greater than the processing speed of the processor 11 in order to add more working space between the sheets and to ensure that the final handling of copy sheets does not impede the throughput of the entire system as determined by the process speed.
  • the axis of the belt 94 is at a slight angle to the direction of the movement of the copy sheets.
  • This arrangement drives each sheet of copy slightly laterally against a side registration edge 97 which is parallel to and offset from the centerline of the incoming path of sheet movement.
  • the sheet S as can be seen through a sheet clearance opening 98 formed in the top plate 99 of the transport 92. In this orientation, the sheets are positioned so that their toner image side is down, for the simplex mode, or an odd-numbered page is down for the duplex copying mode, and the top of each sheet is along the edge 97.
  • a sheet-containing switch S-1 is positioned to be actuated as each sheet enters the transport 92 of the finishing station 13.
  • the circuit for this switch is connected to the logic in the programmer P and serves to re-set the machine clock for the finishing function so that zero time for the sheet commences when the sheet is at the reference point 93.
  • the array 102 includes twelve horizontally disposed bins 104 arranged in a vertical column, the number of which corresponds to the predetermined number of exposures made of each document sheet while it is on the platen 14.
  • the number of bins utilized should correspond to the total number of sheets in the paper path during the first pass duplex mode so that machine "pitches" are not skipped.
  • the number of exposures made for each document sheet positioning on the platen also corresponds to this total number of sheets, which for the illustrated machine is twelve sheets.
  • the array 102 is mounted for bi-directional vertical movement within a supporting fixed frame 105. As shown in Figure 3, the array is positioned in its normal standby position with the lowermost bin opposite the nip of the rollers 100 at the receiving station 93.
  • the bins are numbered consecutively from 1 to 12 starting at the lowest bin with bin numbered 12 at the top of the array.
  • the array is arranged to be indexed in both the up and down directions past the receiving point 93 which is the bin sheet receiving position. Upon operating in the sets mode, the array indexes downwardly one bin at a time and as each bin becomes aligned at the station 93, movement of a copy sheet through the transport 99 and the rollers 100 is timed to enter the bins.
  • a suitable sensor SR-1 may be positioned at the front edge of the bin to indicate to the system logic that this action has occurred and to enable another indexing operation.
  • the document handling apparatus 12 When the array reaches its lowermost position and bin numbered 12 has received a copy sheet, the document handling apparatus 12 has already removed from the platen the document sheet which initiated the production of the copy sheets and add a successive document sheet of a set. Actually, since there are a number of images being processed in the processor 11 and a few copy sheets in the paper path being conveyed by the various transports, document sheet changes would have occurred much earlier than the time that copy sheets indicative thereof are beginning to be received in the array 102. The array will remain in the lowermost position until the first copy sheet of the next succeeding document sheet has been received in the bin numbered 12 whereupon the array will index upwardly now to permit reception of the copy sheets as before. This up and down indexing action and sorting continues until each bin 104 carries a collated set of copy sheets for the set of document sheets in the document handling apparatus 12.
  • a set-binding apparatus in the form of a dual stapler apparatus is arranged immediately below the bin receiving point 93.
  • This apparatus includes means to remove completed sets of collated copy sheets from every other bin to effect single or dual stapling along an edge of the set if so programmed or no stapling at all, and to position the stapled or unstapled sets on an elevator mechanism.
  • the array In order to permit complete removal of the sets from all of the bins 104 in the array 102, the array must move twice relative to the point of set unloading.
  • the sorter/finishing arrangement handles twelve sets at a time (a block of 12 copy sets) in cooperation with the document handling apparatus 12 as the latter exposes each document sheet twelve consecutive times before advancing to the next document sheet until the complete set thereof has been exposed. If more than twelve copy sets have been programmed, the document apparatus/sorter finisher system will complete the reproduction run in blocks of 12 copy sets. The system will continue to sort and automatically unload in blocks of 12 sets until the programmed number of sets is completed.
  • the bin array 102 includes a side wall 106 and a rear wall 107 to which the bins 104 are secured and which close off two adjacent sides of each bin.
  • the front side of the bins, or that side facing the transport 92, is open to receive copy sheets, while the side which faces the operator is also open to permit removal or manipulation of sheets or sets.
  • the bottom wall of each bin is formed with a cut-out 109 to assist in operator sheet removal.
  • the bin array 102 is driven vertically in either direction by a ball screw 110 connected to the shaft of a servo motor M-1 which is mounted to the base of the frame 105. These movements of the array are effected by a ball 111 secured to the rear wall 107 of the array and through which the screw 110 is threadedly related. Rotation of the screw (which is fixed against axial movement) in either direction will impart corresponding up or down movement of the ball 111, and consequently the array.
  • Each of the bins 104 is provided with a scuffer mechanism which is used to pull sheets into the bin and serves to register each sheet against both the interior sides of rear wall 107 and the left side 106 of the bin as sheets are sorted. Since all 12 of the scuffer assemblies are identical only one will be described in detail. As shown in Figure 4, each scuffer assembly is positioned adjacent the corner defined by the rear and left side walls and includes a scuffer roller 112 which has its axis of rotation positioned at a slight angle relative to the rear wall so as to effect two-sided or corner registration.
  • the scuffer is rotatably mounted on a pin 113 secured to and between one end of a pair of closely-spaced arms 114, the other ends of which are rotatably mounted on a pin 115 secured by a bracket 116 to the rear wall 107 of the array 102.
  • the scuffer wheel rests by gravity upon the bottom wall 108 of the bin and will rise slightly as each sheet is conveyed into the bin.
  • the wheel 112 will have risen to approximately its highest position.
  • Each scuffer wheel 112 is provided with a pulley 120 concentric therewith and a similar pulley 121 is secured to a friction drive wheel 122.
  • a timing belt 123 is applied to the pulleys 120, 121 for imparting rotary motion to the scuffer wheel 112 when roation is applied to the drive wheel 122.
  • a flat plate 125 is also pivotally mounted on the pin 113 by means of and as part of a bracket 126 and extends toward the interior side of the rear wall 107 as well as the interior side of the side wall 106. This plate assists in providing a normal force to the scuffer wheel and serves to prevent inadvertent curling of sheets and possible spindling as they move into a bin.
  • the scuffer drive wheels 122 are arranged vertically with their axes in a common plane so that each will be in a position to be contacted by a single drive wheel. As shown in Figure 3 each of the drive wheels contacts a knurled drive wheel 128 when the respective bin is in the fill or sheet collecting position.
  • the wheel 128 is driven by a motor M-2 secured on the frame 105 approximately at the midpoint of the total path of movement of the array. This positioning of the wheel 128 is such that driving contact can be made with each of the friction wheels 122 as the array moves to either of its upper or lower positions.
  • This arrangement wherein a scuffer roller is being activated only when its respective bin is a fill position, minimizes wear of the roller to eliminate any possible copy quality problems.
  • the finishing apparatus 130 comprises five subassemblies each of which is programmed to operate in timed sequence with each other, with the system logic and programmer P, to be timed relative to the number of sets and copy sheets per set which were previously pre-programmed, and with the document sheet actuation of the apparatus 12.
  • the finishing apparatus comprises a set transport 132, individually-operable, dual stapler apparatus 134, and a set kicker 136.
  • the finishing station 13 also includes an elevator 138 and sets/stacks conveyor 140.
  • the set transport 132 is utilized to unload automatically sets or stacks of copy sheets from the bins at an unload station two copy-cycle pitches or bins below the sorter bin load station at 93.
  • the set transport includes an elongated channel member 141 secured to the frame of the finishing apparatus and a clamp carriage 142 reciprocably slidable on a rod 143 secured at its ends to the underside of the member 141.
  • the clamp carriage supports upper and lower moving jaws 144, 144a respectively, which are adapted to-grip an edge of a set or stack and convey the same from the bin array to the stapler apparatus..134 for a stapling operation, if that has been pre-programmed, or directly to the elevator 138 if programmed for the non-stapled mode.
  • a cycle time period equal to the production of two copy sheets or the collection of a copy sheet in each of two successive bins is provided.
  • the clamp carriage 142 is actuated for every other bin during each pass of the bin array in that during full upper movement of the array, six of the twelve bins are unloaded and the remaining bins are unloaded in the full downward movement.
  • the set transport also includes a reversible servo motor M-3 secured to one end of the member 141 and having a drive system connected by a timing belt 145 to a pulley 146 mounted for rotation at the other end of the member 141.
  • the carriage 142 is fastened to the lower run of the belt 145 and energization of the servo motor M-3 effects reciprocable movement of the clamp carriage 142 to move the jaws 144, 144a to the sorter to a set-gripping position, in the opposite direction to a set-stapling position, and still further in that direction, to retract the jaws, all in cyclic actuation.
  • the jaws 144, 144a are sensed by a sensor SR-2 mounted on the frame for the sorter to zero reference the positioning of the set transport as a timing monitor of subsequent timed events in the finishing function.
  • the clamping and unclamping action of the jaws 144, 144a is provided by a solenoid valve in a pneumatic device 147 which is operatively connected to the jaws through a suitable travelling hose, not shown.
  • the kicker mechanism 136 is utilized to push or kick stapled sets from the stapler apparatus and permit dropping of the set onto the elevator 138. If a stacks mode or unstapled sets mode has been programmed, the kicker mechanism is arranged to serve as a backstop for the clamping jaws 144, 144a to strip stacks against.
  • the kicker mechanism is mounted below the clamp carriage 142 and includes two upwardly extending kicker elements 148, one on each side of the clamping jaws 144, 144a, in order to balance the kicker forces on a stapled set.
  • the elements 148 are mounted for sliding movement produced by a crank comprising a set of two interconnected links 149, 150 arranged for cranking action by the rotation of a driven pulley 152.
  • a timing belt 153 and drive pulley 154 driven by a motor M-4 which is the motor utilized to drive the stapler heads as will be described hereinafter.
  • this motor is continuously energized for driving other components of the finishing apparatus 130 and the pulley 154 is selectively, drivingly connected to the motor as by a suitable electromagnetic clutch (not shown) in accordance with programmed arrangements.
  • the stapler apparatus 134 as shown in Figure 7 provides a stapling function either with a single staple or with two staples, both being adapted to be applied at various positions along a long edge of a set or stack of copy sheets. Stapling is achieved by way of two identical mechanisms, each of which provides the function of set clamping, staple driving, and staple clinching.
  • the apparatus utilizes two commercial type stapler heads 155, such as the Bostitch staple head indicated as the 64-E manufactured by the Bostitch Division of Textron Corporation of Buffalo, Rhode Island. Since the stapler mechanisms, drives therefor, and related structure are identical, only one will be described in detail in reference to Figure 7.
  • Each of the heads 155 is mounted in an inverted position and is driven from a crank mechanism though the motor M-4.
  • the mechanism includes an elongated, splined drive shaft 156 which is driven by the motor M-4 by means of a pulley 157 and timing belt, the drive shaft effecting clamping sets or stacks of sheets and actuation of the heads for driving staples thereinto.
  • the driving connection between each of the heads 155, relative to the shaft 156, includes a gear 158 in continuous driving engagement with a splined section on the shaft so that each head may be moved toward and away from each other, or in the same direction, thereby permitting desired positioning of staples on the edges of sets or stacks.
  • the gear 158 in turn actuates a crank mechanism 159 for imparting reciprocatory movement to the staple driver element of the respective head 155, thus causing separation of a staple from a stack of staples and driving of the staple legs through an edge of a set or stack.
  • An electromagnetic clutch SOL-2 may be utilized with the crank mechanism in order to permit selective timed staple driving.
  • Clamping of the edges of sets or stacks prior to staple driving is also derived from the motor M-4 by a crank mechanism 160 driven in a manner similar to the head drive.
  • the clamping mechanism includes an anvil 161 mounted on a long set of drive imparting arms 162 pivotally mounted at 163 on the frame structure for the stapling apparatus.
  • the crank mechanism 160 drivingly connected to the shaft 156 by way of a suitable electromagnetic clutch SOL-3 compresses a relatively-heavy clamp spring 164 during a drive connection.
  • a sensor SR-3 is positioned adjacent and between the heads 155 (see Figure 1) and is utilized in conjunction with the sensor SR-2 to monitor the time between the zero reference of the jaws 144, 144a as they move toward a sorter bin, and the time an edge of a set of copy sheets reaches the stapler heads to be stapled.
  • the timing data are transmitted to the microprocessor in the programmer P.
  • servo controllers provide complex motion control for relatively heavy apparatus which is actuated from a stopped position, accelerated to high speed activation, and then brought to a stop position, all at a continuous high rate of cyclic action. Therefore, accurate velocity profile control is necessary for each servo, and constant position monitoring, utilizing the switch S-1 and the sensors SR-1, SR-2, is provided.
  • the elevator 138 is utilized to collect into a pile the stapled or unstapled sets or stacks of copy sheets for delivery to the operator by way of the conveyor 140.
  • the elevator comprises a tray assembly 165 mounted at the upper end of a vertically arranged, drive screw 166 threadedly received in a threaded member 167 vertically fixed to the base frame for the finisher base frame element 167 so that upon rotation of the member 167, the tray 165 is moved vertically in the up or down direction.
  • a reversible motor M-5 is operatively connected to the member 167 for imparting rotation to the same in either direction.
  • the tray has a plurality of conveyor belts 168 arranged for running on the surface thereof upon which stapled or unstapled sets or stacks are dropped when acted upon by the kicker mechanism 136.
  • a motor M-6 is secured on and below the tray 165 and serves to drive the belts. Energization of this motor is twofold so as to effect two distinct types of movement of the belts. In one type of movement, the belts are driven a short distance, say on the order of an inch (25 mm) or so in both directions, to provide set or stack offset. In another type of movement, the belts are driven to convey collected sets or stacks to the conveyor 140 for removal by the operator.
  • Elevator height of piled sets or stacks is controlled by an optical sensor SR-4 which "looks" across the stack and effects the energization of the motor M-5 and lowering of the tray 165 until the pile is below the sensor.
  • a second sensor SR-5 is positioned to sense the lowermost position of the elevator tray 165 whereat the tray is considered at full capacity.
  • the sensor SR-5 is arranged to effect the second type of movement of the belts 168 to convey a pile thereon to the conveyor 140 for removal. After this conveyance, the elevator is again returned to its uppermost position to receive additional sets or stacks and to become under the control of the sensor SR-4.
  • the conveyor 140 serves to receive a pile of stapled or unstapled sets or stacks from the elevator, to convey the pile out of the finishing station, and to hold if for operator removal.
  • the conveyor includes a support frame structure 170 having a plurality of conveyor belts 171 mounted thereon and a motor M-7 for driving the belts in a direction to pick up a pile of sets or stacks from the elevator 138 and to bring the same out of the space immediately between the stapler apparatus.
  • a switch S-2 is mounted at the outer end of the structure 170 and includes an actuating element 172 arranged to protrude between the belts 171 so as to sense the presence of a pile on the belts.
  • the switch S-2 is also electrically connected to the system logic and controller P and arranged so that upon its actuation, the elevator/offset motor M-6 will not be energized to convey another pile of sets or stacks onto the conveyor, and will assist in initiating the reverting of the machine to its standby position when the sensor SR-5 has sensed the lowermost position of the elevator tray 165.
  • a suitable status indicator may be provided on the console for the machine to inform the operator of the machine status and why operation has ceased.
  • the machine will continue to operate to produce copy sheets and to maintain the bin array 104 in operation to complete its collation of an already-started third cycle of exposures of the set of document sheets in the document handling apparatus 12.
  • the apparatus 12 will revert to its standby condition.
  • the processor 11 completes the production of the copy sheets for that set, it too will revert to its standby condition while the bin array 104 continues in operation to collate the remaining copy sheets.
  • the collated copy sets remain in the bin array as no copy sets will be unloaded, and the entire system will assume the standby condition.
  • Reverting to standby is initiated when the finishing station has produced two full piles of sets or stacks, one on the conveyor and one still on the elevator, and the bin array has collected all of the copy sheets produced for one cycle of operation of the apparatus 12.
  • all processing apparatus and transports have been cleared of document sheets and copy sheets.
  • the conveyor was adapted to hold only a single pile of sets or stacks. If the conveyor is capable of holding more than one pile, the additional number of piles must be added to the number of copy cycles considered above.
  • Reverting to standby may occur before a production run is completed and in this event, the pre-set count and the running account of the run up to the point of reverting to standby will remain. Upon removal of the finished piles, the machine will automatically become operative to complete the programmed run.
  • the timing chart in Figure 8 illustrates a typical sequence of timed events occurring in the finishing apparatus 102.
  • the machine has been programmed for the sets mode of operation for the production and stapling of sets of post-collated copy sheets.
  • the timing periods along the abscissa of the chart are in milliseconds and are in accordance with a copy sheet production rate in the processor 11 of 120 copies per minute or one copy sheet every 0.5 seconds.
  • the first sheet in the top curve has its leading edge at the reference point 93 adjacent the entrance to a bin at a point in time over 300 milli-seconds after zero time reference.
  • the following events would have taken place: the scuffer motor M-2 would have been energized and would stay in that condition throughout the sorting and finishing operation; the motor M-1 would have energized to commence indexing a bin adjacent the reference 93 in a position to receive the first of the illustrated sheets; and the motor M-3 would have been activated to commence activation of the set transport to move the carriage 142 and jaws 144, 144a toward the second bin below the bin awaiting the first sheet (assuming that stapling is to occur).
  • the motor M-1 is deenergized, while the jaws 144, 144a for the set transport continue to move within the bin affected thereby.
  • the solenoid valve device 147 for the set transport is activated to effect clamping of the jaws on the near edge of a set just after the index motor M-3 is deenergized and before the motor M-3 is reenergized to return the carriage 142 to the stapler position. While the device 147 is still activated to maintain clamping of the set, the carriage is moved to a position for the application of one or two staples along the clamped edge of the set.
  • Figures 9(a)-(d) and 10(a)-(d) there is shown sequences of sorting and finishing events for a document having an odd number of document sheets and an even number of document sheets, respectively.
  • the vertical column of numbers 1-12 at the left of each sequence indicate the bin number and the right hand vertical column of numbers indicate the copy of the document sheet being collected.
  • the document handling apparatus 12 is programmed to place a document sheet upon the platen 14 and to effect twelve exposures of the sheet before the removal of the document sheet and placement of a succeeding document sheet, and so on. This assumption also corresponds with the number of bins in the array 102 wherein each copy sheet produced during the exposure of a document sheet on twelve occurrences is received in a bin.
  • each of the bins 3-12 contains eight copy sheets while bins 1 and 2 contain all nine sheets.
  • the bin array 102 is indexing from its upper to lower positions and in so doing, will receive the ninth copy sheet of a document sheet in the bins numbered 3-12.
  • the ninth copy sheet is the last sheet in the sets being produced, as the array 102 indexes downwardly, as shown in Figure 9(b) to receive each last sheet, the sets, now complete, in the odd-numbered bins will be acted upon by the finishing function comprising the set transport mechanism, the stapler apparatus and the set kicker mechanism, as aforesaid.
  • every other bin is affected during the downward movement of the array, while every successive bin receives the ninth copy sheet. Since the convention in the described example is such that a copy sheet is produced every one-half second, registered and clamped sets are delivered to the stapler at one second intervals.
  • Figures 10(a)-(d) the sequences are repeated for a document which consists of an even number of document sheets.
  • the array 102 is indexing upwardly from its down position to receive the last sheet in each set (see Figure 10(a)).
  • Figure 10(b) as the array indexes downwardly, every other bin (odd-numbered bins) is unloaded and stapled and in Figure 10(c), the even-numbered bins being unloaded during the upward indexing of the array.
  • Another series of copy sheets begin to be received in the array during the final upward indexing which unloads the remaining sets in the previous document pass (see Figure 10(d)).
  • Figure 11 is a block diagram of a control arrangement for the reproduction system in Figure 1.
  • the programmer P is operatively connected to four remotes: (1) the processor 11 for controlling the xerographic processing, copy sheet movement, timing and monitoring and all other parameters in the processor; (2) the input station comprising the flash illumination system and circuitry and copy size reduction if this feature is available; (3) the automatic document handling apparatus 12; and (4) the finishing station 13.
  • the finishing station 13 includes two drivers, one of which is operatively connected by way of relays or reediac to the elevator motor M-5, the conveyor motor M-7, the scuffer motor M-2, and the offset-producing motor M-6.
  • the other driver is operatively connected to a servo controller which in turn is connected to two power amplifiers and associated circuitry.
  • One of the power amplifiers serves to energize and operate the sorter array index motor M-1, while the other amplifier serves to energize and operate the set transport motor M-3.
  • these motors impress rather complex movements on various structures, and there is a need to maintain accurate velocity profile controls.
  • One of the power amplifiers also is operatively connected to the stapler drive clutch SOL-2, the clamping clutches SOL-3, the clinching clutches SOL-4, and the solenoid valve device 147.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Collation Of Sheets And Webs (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Discharge By Other Means (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Claims (6)

1. Système de reproduction pour la production de jeux triés de copies d'un jeu de feuilles de document, comprenant un processeur (11) pour produire un nombre choisi de feuilles de copie de chaque feuille de document original; un réseau (102) de casiers de trieuse indexable pour recevoir et assembler les feuilles de copie sortant du processeur, et un dispositif de finition (130) pour réunir chaque jeu de feuilles de copie, caractérisé par: le système comprend un manipulateur de document (12) destiné à transporter des feuilles individuelles de document entre un empilage d'alimentation (D) et un poste d'exposition (14); un contrôleur pour effectuer un nombre choisi d'expositions de chaque feuille de document avant le retour de la feuille à l'empilage, le nombre d'exposition étant égal, ou inférieur, au nombre de casiers du réseau; un moyen pour . actionner le dispositif de finition lorsque cela est désiré simultanément à l'indexage du réseau de casiers de la trieuse, et le dispositif de finition est capable d'extraire les jeux de feuilles de copie sélectivement des casiers alors que le réseau assemble au moins des dernières feuilles de copie.
2. Système selon la revendication 1, comprenant un moyen de commande (P) pour diriger à la suite des feuilles de copie et les introduire dans les casiers (104) au débit d'une feuille par casier (104) et pour actionner l'appareil de finition (130) tous les deux casiers (104) lors d'un mode de fonctionnement avec finition.
3. Système selon la revendication 1, comprenant un moyen de commande (P) associé à l'appareil de manipulation de document (12) pour effectuer un nombre prédéterminé d'exposition multiples de chacune des feuilles de document avant son retour à l'empilage d'alimentation (D), le réseau (102) de la trieuse comportant une pluralité de casiers (104) d'un nombre égal au nombre prédéterminé d'expositions et disposé de manière à recevoir les feuilles de copie sortant du processeur et à les assembler.
4. Système selon la revendication 1, où l'appareil de finition (130) est destiné à recevoir des jeux assemblés de feuilles de copie d'un jeu de feuilles de document provenant du réseau (102) de la trieuse à un poste de déchargement fixe et à lier ces feuilles, le poste de déchargement étant placé en alignement vertical par rapport au poste de réception.
5. Système selon la revendication 1, où le moyen (110, 111) pour conférer un mouvement d'indexage est bidirectionnel alors qu'il reçoit les feuilles de copie.
6. Procédé de production de jeux liés de feuilles de copie d'un jeu de feuilles de document, comprenant les étapes suivantes:
- le transport de chacune des feuilles de document entre un empilage et la position d'exposition d'un système d'impression électrostato- graphique;
- l'exposition de chaque feuille un nombre choisi de fois alors que chacune est toujours en position;
- le traitement des feuilles de copie contenant l'information sur les feuilles de document dans le système d'impression;
- l'assemblage des feuilles de copie en jeux, en utilisant un réseau de casiers d'assemblage, en nombre égal, ou supérieur au nombre choisi; et
- le transport de jeux complétés de feuilles de copie assemblées entre le réseau et un appareil de liage de manière à lier les feuilles au moment désiré alors que le réseau assemble au moins certaines des dernières feuilles de copie.
EP81303835A 1980-08-21 1981-08-21 Système de reproduction et procédé pour la fabrication de copies Expired EP0046675B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18018480A 1980-08-21 1980-08-21
US180184 1980-08-21

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EP0046675A2 EP0046675A2 (fr) 1982-03-03
EP0046675A3 EP0046675A3 (en) 1982-10-06
EP0046675B1 true EP0046675B1 (fr) 1985-06-12

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EP (1) EP0046675B1 (fr)
JP (1) JPS5764262A (fr)
BR (1) BR8105271A (fr)
CA (1) CA1163229A (fr)
DE (1) DE3170935D1 (fr)
SU (1) SU1366050A3 (fr)

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US4378085A (en) * 1980-11-03 1983-03-29 Xerox Corporation Stapler apparatus having a mechanism for bending and cutting staple legs in accordance with the thickness of the work piece
US4368972A (en) * 1981-04-15 1983-01-18 Xerox Corporation Very high speed duplicator with finishing function
US4526309A (en) * 1982-09-13 1985-07-02 Xerox Corporation Compatible copying of computer form documents
US4462527A (en) * 1982-09-09 1984-07-31 Xerox Corporation Device for lateral registration of computer form documents for copying
JPS5986551A (ja) * 1982-11-08 1984-05-18 Ricoh Co Ltd ステープル装置を備えたソ−タ
US4516714A (en) * 1983-12-21 1985-05-14 Xerox Corporation High speed duplicator with sorter/stapling apparatus and stapler positioning control
US4537650A (en) * 1984-05-01 1985-08-27 Xerox Corporation Sheet binding apparatus
JPS6159369A (ja) * 1984-08-31 1986-03-26 Fuji Xerox Co Ltd 複写機の後処理装置
JPS62289860A (ja) * 1986-06-09 1987-12-16 Canon Inc 画像形成装置
JP2702504B2 (ja) * 1988-05-06 1998-01-21 株式会社リコー ソーターのステープル装置
JP3020970B2 (ja) * 1989-01-18 2000-03-15 株式会社リコー 紙処理装置
JP2947839B2 (ja) * 1989-01-19 1999-09-13 株式会社リコー 紙処理装置
US5031890A (en) * 1989-01-19 1991-07-16 Ricoh Company, Ltd. Paper handling apparatus
JPH0399891A (ja) * 1989-09-14 1991-04-25 Ricoh Co Ltd 用紙後処理装置
JPH0813582B2 (ja) * 1990-10-29 1996-02-14 三田工業株式会社 用紙後処理装置
JP2634107B2 (ja) * 1991-07-24 1997-07-23 三田工業株式会社 画像形成装置及びその排紙装置
JP2574959B2 (ja) * 1991-11-08 1997-01-22 株式会社リコー シート処理装置

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Also Published As

Publication number Publication date
EP0046675A2 (fr) 1982-03-03
EP0046675A3 (en) 1982-10-06
JPH023503B2 (fr) 1990-01-23
BR8105271A (pt) 1982-04-27
JPS5764262A (en) 1982-04-19
DE3170935D1 (en) 1985-07-18
CA1163229A (fr) 1984-03-06
SU1366050A3 (ru) 1988-01-07

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