US20200122952A1 - Paper Sheet Stacking Apparatus and Image Forming System - Google Patents
Paper Sheet Stacking Apparatus and Image Forming System Download PDFInfo
- Publication number
- US20200122952A1 US20200122952A1 US16/653,039 US201916653039A US2020122952A1 US 20200122952 A1 US20200122952 A1 US 20200122952A1 US 201916653039 A US201916653039 A US 201916653039A US 2020122952 A1 US2020122952 A1 US 2020122952A1
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- US
- United States
- Prior art keywords
- tray
- paper sheet
- stacking apparatus
- sheet stacking
- operation state
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H31/00—Pile receivers
- B65H31/30—Arrangements for removing completed piles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H31/00—Pile receivers
- B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
- B65H31/08—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another
- B65H31/10—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled one above another and applied at the top of the pile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H31/00—Pile receivers
- B65H31/30—Arrangements for removing completed piles
- B65H31/3054—Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/38—Delivering or advancing articles from machines; Advancing articles to or into piles by movable piling or advancing arms, frames, plates, or like members with which the articles are maintained in face contact
- B65H29/46—Members reciprocated in rectilinear path
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H31/00—Pile receivers
- B65H31/22—Pile receivers removable or interchangeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H31/00—Pile receivers
- B65H31/24—Pile receivers multiple or compartmented, e.d. for alternate, programmed, or selective filling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H31/00—Pile receivers
- B65H31/30—Arrangements for removing completed piles
- B65H31/3054—Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers
- B65H31/3063—Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers by special supports like carriages, containers, trays, compartments, plates or bars, e.g. moved in a closed loop
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- 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
- B65H2301/40—Type of handling process
- B65H2301/42—Piling, depiling, handling piles
- B65H2301/422—Handling piles, sets or stacks of articles
- B65H2301/4225—Handling piles, sets or stacks of articles in or on special supports
- B65H2301/42252—Vehicles, e.g. carriage, truck
-
- 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
- B65H2301/40—Type of handling process
- B65H2301/42—Piling, depiling, handling piles
- B65H2301/422—Handling piles, sets or stacks of articles
- B65H2301/4225—Handling piles, sets or stacks of articles in or on special supports
- B65H2301/42256—Pallets; Skids; Platforms with feet, i.e. handled together with the stack
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2405/00—Parts for holding the handled material
- B65H2405/10—Cassettes, holders, bins, decks, trays, supports or magazines for sheets stacked substantially horizontally
- B65H2405/15—Large capacity supports arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2405/00—Parts for holding the handled material
- B65H2405/30—Other features of supports for sheets
- B65H2405/33—Compartmented support
- B65H2405/332—Superposed compartments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/03—Image reproduction devices
- B65H2801/06—Office-type machines, e.g. photocopiers
Definitions
- the present invention relates to a paper sheet stacking apparatus and an image forming system.
- a paper sheet stacking apparatus that stacks a large amount of paper sheets supplied from the outside of the paper sheet stacking apparatus is conventionally known.
- this type of paper sheet stacking apparatus there is known a configuration in which a tray configured to stack paper sheets and a carriage capable of transporting the paper sheets to the outside of the paper sheet stacking apparatus are included and delivery of the paper sheets to the carriage can be performed for each tray. According to this configuration, when the paper sheets are transported to the outside of the paper sheet stacking apparatus by the carriage, the paper sheets can be delivered together with the tray to the carriage, and therefore a large amount of stacked paper sheets can be easily handled.
- JP 2008-94581 A discloses a paper sheet stacking apparatus (sheet stacking apparatus) including a tray lifting and lowering member, a tray means, a driving means, a control means, and a carrier means.
- the tray means is attached to the tray lifting and lowering member in an attachable and detachable manner and configured to stack paper sheets (sheets) from a discharge port.
- the driving means is configured to lift and lower the tray lifting and lowering member below the discharge port.
- the control means is configured to control the driving means.
- the carrier means is configured to attach thereto the tray means separated from the tray elevating member and transport the tray means to the outside of the paper sheet stacking apparatus.
- the tray lifting and lowering member and the carrier means are configured to take over the tray means from each other and attach the tray means thereto at an attaching and detaching position to which the tray lifting and lowering member has lowered.
- JP 2008-94581 A the paper sheet is delivered to the carriage together with the tray. Therefore, there is a disadvantage that discharge of the paper sheet needs to be stopped from when the tray inside the paper sheet stacking apparatus is delivered to the carriage until the tray is returned to the inside of the paper sheet stacking apparatus, which causes downtime to occur.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a paper sheet stacking apparatus and an image forming system capable of suppressing the occurrence of downtime.
- FIG. 1 is a front view schematically showing a configuration of an image forming system according to a first embodiment
- FIG. 2 is a configuration view showing the main parts of a paper sheet stacking apparatus mainly including a first tray and a second tray;
- FIG. 3 is a descriptive view showing a relationship between the second tray and the first tray
- FIG. 4 is a flowchart showing a flow of the operation of the image forming system
- FIGS. 5A to 5F are descriptive views for describing a flow of the operation of the paper sheet stacking apparatus
- FIG. 6 is a descriptive view showing a configuration of a paper sheet stacking apparatus according to a second embodiment
- FIGS. 7A to 7E are views for describing an outline of a flow of the operation of the paper sheet stacking apparatus according to the second embodiment
- FIG. 8 is a descriptive view showing a configuration of a paper sheet stacking apparatus according to a third embodiment
- FIGS. 9A to 9F are views for describing an outline of a flow of the operation of the paper sheet stacking apparatus according to the third embodiment.
- FIG. 10 is a front view of the paper sheet stacking apparatus showing a modification of the first tray and the second tray;
- FIGS. 11A to 11C are views for describing an outline of a flow of the operation of the modification of the first tray and the second tray.
- FIG. 1 is a front view schematically showing a configuration of an image forming system according to the present embodiment.
- the image forming system according to the present embodiment includes an image forming apparatus 1 and a paper sheet stacking apparatus 2 .
- the image forming apparatus 1 is an electrophotographic image forming apparatus such as a copying machine and is configured to form an image on a paper sheet P on the basis of image data.
- the image forming apparatus 1 includes a document reading device 5 , a photoreceptor 11 , a charging part 12 , an image exposing part 13 , a developing part 14 , a transfer part 15 A, a separator 15 B, a cleaning device 16 , a fixing device 18 , and an image formation controller 19 .
- the document reading device 5 is disposed on the upper part of a housing of the image forming apparatus 1 and includes an automatic document feeder configured to automatically move a document when an image is read.
- the document reading device 5 is configured to read the image formed on the document and output a predetermined image signal.
- the output image signal is created as image data by being subjected to an analog-to-digital conversion.
- An image reading controller (not shown) included in the document reading device 5 is configured to subject the image data to processing such as shading correction, dither processing, compression and output data obtained by the processing, as final image data, to the image formation controller 19 .
- the image formation controller 19 not only obtains the image data from the document reading device 5 but also may obtain image data from a personal computer connected to the image forming apparatus 1 or another image forming apparatus 1 .
- the surface of the photoreceptor 11 is uniformly charged by the charging part 12 .
- the image exposing part 13 is configured to scan and expose the surface of the photoreceptor 11 with a laser beam on the basis of output information output from the image formation controller 19 on the basis of the image data.
- a latent image is formed on the surface of the photoreceptor 11 .
- the developing part 14 is configured to develop the latent image with toner to form an image (toner image) on the surface of the photoreceptor 11 .
- the paper sheet P accommodated in a paper sheet tray 17 A is fed to the transfer part 15 A.
- the transfer part 15 A is configured to transfer the image on the surface of the photoreceptor 11 to the paper sheet P.
- the separator 15 B is configured to separate the paper sheet P to which the image is transferred from the photoreceptor 11 .
- the cleaning device 16 is configured to remove the toner remaining on the surface of the photoreceptor 11 after the image is transferred to the paper sheet P.
- An intermediate conveyance part 17 B is configured to convey the separated paper sheet P to the fixing device 18 .
- the fixing device 18 is configured to subject the paper sheet P to fixing processing to fix the image by heating and pressing.
- a paper sheet discharge roller 17 C is configured to discharge the paper sheet P subjected to the fixing processing to the outside of the image forming apparatus 1 .
- an conveyance direction of the paper sheet P subjected to the fixing processing by the fixing device 18 is switched from a side of the paper sheet discharge roller 17 C to a lower side (side of a reverse conveyance part 17 E) by a conveyance path switching plate 17 D.
- the reverse conveyance part 17 E is configured to reverse the front and back of the paper sheet P by switching back the paper sheet P and then convey the paper sheet P to the transfer part 15 A.
- the image formation controller 19 is configured to control the image forming apparatus 1 .
- a microcomputer mainly including a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), and an input/output (I/O) interface can be used.
- the CPU is configured to execute various programs (processors).
- the ROM is configured to store various programs executed by the CPU in the form of program codes readable by the CPU.
- the ROM is configured to store data necessary for execution of the programs.
- the RAM is a memory configured to serve as a working storage area. The programs and data stored in the ROM are expanded on the RAM when the programs and data are read by the CPU. Then, the CPU is configured to perform various processing on the basis of the programs and data expanded on the RAM.
- the paper sheet stacking apparatus 2 is an apparatus configured to stack and accommodate the paper sheet P when the paper sheet P supplied from the image forming apparatus 1 is taken into the inside of the paper sheet stacking apparatus 2 .
- the paper sheet stacking apparatus 2 is disposed on a downstream side of the image forming apparatus 1 in a paper sheet conveyance direction so that the paper sheet stacking apparatus 2 is adjacent to the image forming apparatus 1 .
- the paper sheet stacking apparatus 2 mainly includes a paper sheet discharger 20 , a first tray 21 , a lifting and lowering device 24 , a second tray 25 , a front-rear driving device 28 , and a stacking controller 31 .
- FIG. 2 is a configuration view showing the main parts of the paper sheet stacking apparatus 2 mainly including the first tray 21 and the second tray 25 .
- the paper sheet discharger 20 When receiving the paper sheet P supplied from the image forming apparatus 1 , the paper sheet discharger 20 takes the paper sheet P into the inside of the paper sheet stacking apparatus 2 (inside of a housing 2 a ) and discharges the paper sheet P into the first tray 21 . A position of the paper sheet discharger 20 is set to correspond to a position of the paper sheet discharge roller 17 C of the image forming apparatus 1 .
- the first tray 21 is a tray on which the paper sheet P discharged from the paper sheet discharger 20 is stacked.
- the first tray 21 is movable along an up-and-down direction.
- the first tray 21 includes a plurality of first support members 22 formed in a comb shape.
- the plurality of first support members 22 is arranged horizontally at a predetermined pitch along the paper sheet conveyance direction.
- Each first support member 22 extends from a base member 23 positioned on a rear side (rear side of the paper sheet stacking apparatus 2 ) to a front side (front side of the paper sheet stacking apparatus 2 ).
- the lifting and lowering device 24 is a device configured to lift and lower (move) the first tray 21 along the up-and-down direction.
- the lifting and lowering device 24 mainly includes a drive motor, a drive pulley, a driven pulley, and a timing belt.
- the drive pulley is configured to rotate by receiving power from the drive motor.
- the timing belt is stretched between the drive pulley and the driven pulley and connects the first tray 21 .
- the lifting and lowering device 24 is controlled by the stacking controller 31 .
- the lifting and lowering device 24 is configured to set the first tray 21 to a home position.
- the home position corresponds to a position of the first tray 21 when the stacking of the paper sheet P is started.
- the lifting and lowering device 24 lowers (moves) the first tray 21 so that the uppermost paper sheet P stacked on the first tray 21 maintains a predetermined height.
- the lowering of the first tray 21 in association with the stacking of the paper sheet P is performed until the number of the paper sheets P stacked on the first tray 21 reaches the upper limit number of paper sheets or the set number of paper sheets.
- the upper limit number of paper sheets is set by setting the maximum number of the paper sheets P that can be stacked on the first tray 21 .
- the upper limit number of paper sheets is set, for example, by mechanical restrictions caused by the structure of the paper sheet stacking apparatus 2 .
- the set number of paper sheets is, for example, the number of the paper sheets set by a user within the maximum number of the paper sheets P to be stacked on the first tray 21 and any number of the paper sheets is set in the range of one or more paper sheets and less than the upper limit number of paper sheets. Positions from the home position to a position at which the first tray 21 reaches when the paper sheets P, the number of which corresponds to the upper limit number of paper sheets are stacked correspond to a paper sheet stacking position of the first tray 21 .
- the lifting and lowering device 24 lowers the first tray 21 to a paper sheet delivery position at which the paper sheet P is delivered to the second tray 25 . Furthermore, when the delivery of the paper sheet P from the first tray 21 to the second tray 25 is completed, the lifting and lowering device 24 lifts (moves) the first tray 21 from the paper sheet delivery position to the home position.
- the second tray 25 is disposed below the first tray 21 .
- the second tray 25 is a tray for receiving the paper sheet P stacked on the first tray 21 from the first tray 21 .
- the second tray 25 includes a plurality of second support members 26 formed in a comb shape.
- the plurality of second support members 26 is arranged horizontally at a predetermined pitch along the paper sheet conveyance direction.
- Each second support member 26 stands on a base member 27 positioned below the second support member 26 .
- FIG. 3 is a descriptive view showing a relationship between the second tray 25 and the first tray 21 .
- the plurality of second support members 26 is provided at positions corresponding to a plurality of clearances formed in the first tray 21 , that is, spaces existing between the first support members 22 adjacent to each other. Therefore, even in a case where the first tray 21 moves downward and the first tray 21 and the second tray 25 exist on the same horizontal plane, the first tray 21 and the second tray 25 do not interfere with each other. That is, the first tray 21 and the second tray 25 can pass each other in the up-and-down direction.
- an upper surface 21 a of the first tray 21 is lowered below an upper surface 25 a of the second tray 25 , whereby the paper sheet P stacked on the first tray 21 can be delivered to the second tray 25 .
- the paper sheet delivery position described above is determined in advance according to a height of the second tray 25 , as a position at which the upper surface 21 a of the first tray 21 exists below the upper surface 25 a of the second tray 25 .
- the front-rear driving device 28 includes a pedestal part 29 and a driving part 30 .
- the driving part 30 is configured to move the pedestal part 29 along a front-rear direction and discharge the second tray 25 to the outside of the paper sheet stacking apparatus 2 .
- the driving part 30 mainly includes a driving motor, a driving pulley, a driven pulley, and a timing belt.
- the driving pulley is configured to rotate by receiving power from the driving motor.
- the timing belt is stretched between the driving pulley and the driven pulley and connects the pedestal part 29 .
- the front-rear driving device 28 is controlled by the stacking controller 31 .
- the front-rear driving device 28 is configured to set the second tray 25 to the home position.
- the home position exists below the first tray 21 inside the paper sheet stacking apparatus 2 and is a position at which the paper sheet P can be delivered from the first tray 21 when the first tray 21 has lowered.
- the front-rear driving device 28 moves the second tray 25 to the front side and discharges the second tray 25 to the outside of the paper sheet stacking apparatus 2 .
- the second tray 25 is attached to a carriage 40 configured to convey the paper sheet P.
- the paper sheet P can be conveyed together with the second tray 25 through the carriage 40 .
- the second tray 25 is removed from the carriage 40 and attached to the pedestal part 29 .
- the front-rear driving device 28 moves the second tray 25 to the rear side and returns the second tray 25 to the home position.
- the housing 2 a of the paper sheet stacking apparatus 2 is provided with a shutter (not shown). The shutter is opened and closed according to the entry and exit of the second tray 25 .
- the stacking controller 31 is configured to control the paper sheet stacking apparatus 2 .
- a microcomputer mainly including a CPU, a ROM, a RAM, and an I/O interface can be used.
- the CPU is configured to execute various programs (processors).
- the ROM is configured to store various programs executed by the CPU in the form of program codes readable by the CPU.
- the ROM is configured to store data necessary for execution of the programs.
- the RAM is a memory configured to serve as a working storage area. The programs and data stored in the ROM are expanded on the RAM when the programs and data are read by the CPU. Then, the CPU is configured to perform various processing on the basis of the programs and data expanded on the RAM.
- FIG. 4 is a flowchart showing a flow of the operation of the image forming system.
- FIGS. 5A to 5F are views for describing a flow of the operation of the paper sheet stacking apparatus 2 . Processing shown in the flowchart is executed by the image formation controller 19 and the stacking controller 31 using a print start instruction of the user as a trigger.
- step S 10 the image formation controller 19 controls each part of the image forming apparatus 1 to execute image forming operation.
- image forming operation a series of processing such as sheet feeding of the paper sheet P, image formation on the fed paper sheet P, and discharge of the paper sheet P on which the image is formed to the paper sheet stacking apparatus 2 is performed.
- the stacking controller 31 controls the paper sheet discharger 20 , receives the paper sheet P supplied from the image forming apparatus 1 at the paper sheet discharger 20 , and discharges the paper sheet P to the first tray 21 ( FIG. 5A ).
- step S 11 the stacking controller 31 determines whether the number of the paper sheets P stacked on the first tray 21 has reached the upper limit number of paper sheets or the set number of paper sheets. In a case where the number of the paper sheets P stacked on the first tray 21 has reached the upper limit number of paper sheets or the set number of paper sheets, a positive determination is made in step S 11 , and the processing proceeds to step S 12 . Meanwhile, when the number of the paper sheets P stacked on the first tray 21 has not reached the upper limit number of paper sheets or the set number of paper sheets, a negative determination is made in step S 11 , and the processing returns to step S 10 .
- step S 12 the image formation controller 19 controls each part of the image forming apparatus 1 to stop the image forming operation. Similarly, the stacking controller 31 controls the paper sheet discharger 20 to stop sheet discharge of the paper sheet P to the first tray 21 .
- step S 13 the stacking controller 31 controls the lifting and lowering device 24 to cause the first tray 21 to perform lowering operation ( FIG. 5B ).
- the lowering operation of the first tray 21 is performed until the first tray 21 reaches the paper sheet delivery position.
- the paper sheet delivery position is set according to the height of the second tray 25 mounted on the pedestal part 29 .
- step S 14 the stacking controller 31 controls the front-rear driving device 28 to cause the pedestal part 29 to perform forward operation ( FIG. 5D ). This forward operation is performed until the pedestal part 29 and the second tray 25 mounted on the pedestal part 29 are discharged to the outside of the paper sheet stacking apparatus 2 .
- step S 15 the stacking controller 31 controls the lifting and lowering device 24 to cause the lift the first tray 21 to perform upward operation ( FIG. 5E ).
- the lifting operation of the first tray 21 is performed until the first tray 21 reaches the home position.
- the second tray 25 discharged to the outside of the paper sheet stacking apparatus 2 is removed from the pedestal part 29 with the paper sheet P stacked and is attached to the carriage 40 provided outside the paper sheet stacking apparatus 2 ( FIG. 5F ).
- the second tray 25 and the paper sheet P stacked on the second tray 25 can be conveyed through the carriage 40 .
- step S 16 the image formation controller 19 controls each part of the image forming apparatus 1 to restart the image forming operation.
- the stacking controller 31 controls the paper sheet discharger 20 to restart the discharge of the paper sheet P to the first tray 21 .
- the restart of the image forming operation and the restart of sheet discharge to the first tray 21 are executed so that the paper sheet P is discharged to the first tray 21 at timing when the first tray 21 has reached the home position or at timing slightly later than when the first tray 21 has reached the home position.
- step S 17 the image formation controller 19 determines whether the job has ended. In a case where the job has ended, a positive determination is made in step S 17 , and this routine ends. Meanwhile, in a case where the job has not ended, a negative determination is made in step S 17 , and the processing returns to step S 10 .
- the second tray 25 is removed from the carriage 40 and attached to the pedestal part 29 .
- the stacking controller 31 controls the front-rear driving device 28 to cause the pedestal part 29 to perform backward operation. This backward operation is performed until the pedestal part 29 and the second tray 25 mounted on the pedestal part 29 reach the home position. Thus, the second tray 25 is returned to the inside of the paper sheet stacking apparatus 2 .
- the second tray 25 is preferably returned to the pedestal part 29 before the number of the paper sheets P stacked on the first tray 21 reaches the upper limit number of paper sheets or the set number of paper sheets. Furthermore, since there is a possibility that the pedestal part 29 becomes an obstacle if the pedestal part 29 stays discharged to the outside of the paper sheet stacking apparatus 2 , the pedestal part 29 may be returned to the inside of the paper sheet stacking apparatus 2 until the second tray 25 is removed from the pedestal part 29 and then may be attached to the pedestal part 29 again.
- the first tray 21 and the second tray 25 have at least three operation states as operation states thereof.
- a first operation state is an operation state in which the first tray 21 is at the paper sheet stacking position at which the paper sheet P discharged from the paper sheet discharger 20 is stacked, and the second tray 25 is positioned below the first tray 21 .
- a second operation state is an operation state in which the upper surface 25 a of the second tray 25 is positioned above the upper surface 21 a of the first tray 21 , and the paper sheet P stacked on the first tray 21 can be delivered to the second tray 25 .
- a third operation state is an operation state in which the first tray 21 that has delivered the paper sheet P to the second tray 25 is returned to the paper sheet stacking position.
- the paper sheet P can be delivered to the second tray 25 , the paper sheet P can be taken out of the paper sheet stacking apparatus 2 via the second tray 25 while the first tray 21 is left in the paper sheet stacking apparatus 2 . Furthermore, the first tray 21 that has delivered the paper sheet P to the second tray 25 can be returned to the paper sheet stacking position (home position). Therefore, the stacking of the paper sheet P on the first tray 21 can be restarted promptly. As a result, the occurrence of downtime can be suppressed.
- each of the first tray 21 and the second tray 25 includes clearances for passing the other tray so that the first tray 21 and the second tray 25 do not interfere with each other on the same plane.
- the first tray 21 and the second tray 25 are each set in a comb shape.
- the upper surface 21 a of the first tray 21 can be reached below the upper surface 25 a of the second tray 25 .
- the paper sheet P can be easily delivered from the first tray 21 to the second tray 25 .
- the first tray 21 reaches the paper sheet delivery position according to the height of the second tray 25 , whereby the first operation state changes to the second operation state.
- the paper sheet P can be easily delivered from the first tray 21 to the second tray 25 by moving the first tray 21 .
- the second tray 25 in the first operation state, is positioned below the first tray 21 and the first tray lowers, whereby the first operation state changes to the second operation state.
- the paper sheet P can be easily delivered from the first tray 21 to the second tray 25 by moving the first tray 21 in the up-and-down direction. Furthermore, since the first tray 21 has a function of lifting and lowering in the up-and-down direction when the paper sheet P is stacked, the paper sheet P can be delivered from the first tray 21 to the second tray 25 , using the existing configuration.
- the paper sheet stacking apparatus 2 further includes the pedestal part 29 configured to move between the inside of the paper sheet stacking apparatus 2 and the outside of the paper sheet stacking apparatus 2 .
- the second tray 25 is mounted on the pedestal part 29 . According to this configuration, the second tray 25 can be moved between the inside of the paper sheet stacking apparatus 2 and the outside of the paper sheet stacking apparatus 2 by moving the pedestal part 29 .
- the second tray 25 is mounted on the pedestal part 29 in an attachable and detachable manner. According to this configuration, since the second tray 25 can be attached and detached, the paper sheet P can be handled together with the second tray 25 .
- the paper sheet stacking apparatus 2 further includes the carriage 40 on which the second tray 25 discharged to the outside of the paper sheet stacking apparatus 2 is mounted and that is configured to convey the second tray 25 .
- the second tray 25 can be transported by the carriage 40 , a large amount of the paper sheets P can be easily conveyed.
- the image forming system according to the second embodiment differs from that according to the first embodiment in the configuration of the paper sheet stacking apparatus 2 . Descriptions of contents overlapping the first embodiment will be omitted, and hereinafter, differences will be mainly described.
- FIG. 6 is a descriptive view showing a configuration of a paper sheet stacking apparatus 2 according to the second embodiment.
- the paper sheet stacking apparatus 2 mainly includes a paper sheet discharger 20 (not shown in FIG. 6 ), a first tray 21 , a lifting and lowering device 24 , a second tray 25 , a carriage 40 , and a stacking controller 31 .
- Configurations of the paper sheet discharger 20 , the first tray 21 , the lifting and lowering device 24 , and the stacking controller 31 are similar to those in the first embodiment.
- the second tray 25 is mounted on the carriage 40 accommodated inside the paper sheet stacking apparatus 2 .
- the carriage 40 is configured to convey the second tray 25 and can be moved from the inside of the paper sheet stacking apparatus 2 to the outside of the paper sheet stacking apparatus 2 .
- FIGS. 7A to 7E are views for describing an outline of a flow of the operation of the paper sheet stacking apparatus 2 according to the second embodiment.
- FIG. 7A First, discharge of a paper sheet P discharged from an image forming apparatus 1 to the first tray 21 is started ( FIG. 7A ).
- the stacking controller 31 controls the lifting and lowering device 24 to cause the lower the first tray 21 to perform lowering operation ( FIG. 7B ).
- the lowering operation of the first tray 21 is performed until the first tray 21 reaches the paper sheet delivery position.
- the paper sheet delivery position is set according to a height of the second tray 25 mounted on the carriage 40 .
- the paper sheet P stacked on the first tray 21 is delivered from the first tray 21 to the second tray 25 ( FIG. 7C ).
- the carriage 40 from which the paper sheet P has been delivered to the second tray 25 is carried out of the paper sheet stacking apparatus 2 by a user ( FIG. 7D ).
- the stacking controller 31 determines that the carriage 40 has been carried out of the paper sheet stacking apparatus 2 , using a detection result of a sensor (not shown), the stacking controller 31 controls the lifting and lowering device 24 to cause the first tray 21 to perform upward operation (see FIG. 7E ).
- the lifting operation of the first tray 21 is performed until the first tray 21 reaches the home position.
- the second tray 25 carried out together with the carriage 40 can be conveyed to a target location through the carriage 40 . Then, the first tray 21 returns to the home position, whereby image forming operation and the discharge of the paper sheet P to the first tray 21 are started.
- the second tray 25 is mounted on the carriage 40 , and the carriage 40 is accommodatable inside the paper sheet stacking apparatus 2 .
- the second tray 25 and the paper sheet P can be moved between the outside and the inside of the paper sheet stacking apparatus 2 , using the carriage 40 . Furthermore, since the carriage 40 is accommodated inside the paper sheet stacking apparatus 2 , there is no need to transfer the second tray 25 to the carriage 40 . Thus, the paper sheet P delivered from the first tray 21 can be easily conveyed.
- the image forming system according to the third embodiment differs from that the first embodiment in the configuration of the paper sheet stacking apparatus 2 .
- descriptions of contents overlapping with the first embodiment will be omitted, and hereinafter, differences will be mainly described.
- FIG. 8 is a descriptive view showing a configuration of a paper sheet stacking apparatus 2 according to the third embodiment.
- the paper sheet stacking apparatus 2 mainly includes a paper sheet discharger 20 (not shown in FIG. 8 ), a first tray 21 , a lifting and lowering device 24 , a plurality of second trays 25 , a front-rear driving device 28 , and a stacking controller 31 .
- Configurations of the paper sheet discharger 20 , the first tray 21 , the lifting and lowering device 24 , the front-rear driving device 28 , and the stacking controller 31 are similar to those in the first embodiment.
- the plurality of second trays 25 is mounted on a pedestal part 29 while being stacked in an up-and-down direction.
- a configuration of each second tray 25 is similar to that of the first embodiment.
- FIGS. 9A to 9F are views for describing an outline of a flow of the operation of the paper sheet stacking apparatus 2 according to the third embodiment.
- the stacking controller 31 controls the lifting and lowering device 24 to cause the first tray 21 to perform lowering operation ( FIG. 9A ).
- the lowering operation of the first tray 21 is performed until the first tray 21 reaches the paper sheet delivery position.
- the paper sheet delivery position is set according to a height of the uppermost second tray 25 among the plurality of second trays 25 mounted on the pedestal part 29 .
- the paper sheet delivery position is set to be in a relationship such that an upper surface 25 a of the uppermost second tray 25 is positioned above an upper surface 21 a of the first tray 21 when the first tray 21 reaches the paper sheet delivery position.
- the paper sheet P stacked on the first tray 21 is delivered from the first tray 21 to the uppermost second tray 25 ( FIG. 9B ).
- the pedestal part 29 When delivery of the paper sheet P to the second tray 25 is performed, the pedestal part 29 is caused to perform forward operation, whereby the second tray 25 is discharged to the outside of the paper sheet stacking apparatus 2 .
- the uppermost second tray 25 is removed from the pedestal part 29 and attached to a carriage 40 provided outside the paper sheet stacking apparatus 2 .
- the pedestal part 29 When the uppermost second tray 25 is attached to the carriage 40 , the pedestal part 29 is returned to a home position.
- the remaining second tray 25 return to the inside of the paper sheet stacking apparatus 2 ( FIG. 9C ).
- the stacking controller 31 controls the lifting and lowering device 24 to cause the first tray 21 to perform upward operation ( FIG. 9D ).
- the lifting operation of the first tray 21 is performed until the first tray 21 reaches the home position.
- the first tray 21 returns to the home position, whereby the image forming operation and the discharge of the paper sheet P to the first tray 21 are started. Then, the above operation is repeated for the new uppermost second tray 25 ( FIGS. 9E and 9F ).
- the plurality of second trays 25 is stacked in the up-and-down direction.
- the paper sheet delivery position is switched according to a height of the second tray 25 positioned at the uppermost position.
- the paper sheet P can be delivered to the second tray 25 remaining on the pedestal part 29 without waiting until the second tray 25 returns.
- the occurrence of downtime can be suppressed.
- each of the first tray 21 and the second tray 25 includes clearances for passing the tray on the other side so that the first tray 21 and the second tray 25 do not interfere with each other on the same plane.
- a method of delivering the paper sheet P from the first tray 21 to the second tray 25 is not limited to this.
- FIG. 10 is a front view of the paper sheet stacking apparatus 2 showing a modification of the first tray 21 and the second tray 25 .
- a second tray 25 is disposed on a side of a first tray so that the second tray 25 is arranged side by side with the first tray 21 .
- the first tray 21 and the second tray 25 can suppress interference with each other on the same plane without including clearances for passing the tray on the other side.
- a stacking controller 31 controls a lifting and lowering device 24 to cause the first tray 21 to perform lowering operation (see FIG. 11A ).
- the lowering operation of the first tray 21 is performed until the first tray 21 reaches the paper sheet delivery position.
- the paper sheet delivery position is set according to a height of the second tray 25 ( FIG. 11B ). More specifically, the paper sheet delivery position is set to be in a relationship such that an upper surface 25 a of the second tray 25 that is arranged side by side with the first tray 21 when the first tray 21 reaches the paper sheet delivery position is positioned above the upper surface 21 a of the first tray 21 .
- the delivery of the paper sheet P from the first tray 21 to the second tray 25 can be performed using any method.
- a belt conveyor is used.
- the first tray 21 returns to a home position ( FIG. 11C ).
- the image forming operation and the discharge of the paper sheet P to the first tray 21 can be started.
- the image forming system includes the image forming apparatus configured to serve an image forming function and the paper sheet stacking apparatus configured to stack the paper sheet.
- a sheet processing device itself that constitutes the image forming system also functions as an aspect of the present invention.
- an image forming system includes a paper sheet stacking apparatus as one function of an image forming apparatus.
- the paper sheet stacking apparatus includes the dedicated controller (stacking controller), and the stacking controller executes control of the paper sheet stacking apparatus.
- the image formation controller configured to control the image forming apparatus may control the paper sheet stacking apparatus.
- the stacking controller may be omitted.
- the paper sheet P widely includes not only a recording medium manufactured using pulp as a main raw material but also a recording medium capable of forming an image by the image forming apparatus.
- the first tray is moved when the paper sheet is delivered.
- the second tray may be moved and reached to the paper sheet delivery position according to the height of the first tray, that is, a position at which the upper surface of the second tray is above the upper surface of the first tray, whereby the first operation state is changed to the second operation state.
- both the first tray and the second tray may be moved to change from the first operation state to the second operation state.
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Abstract
Description
- This application claims priority under 35 U.S.C. § 119 to Japanese patent Application No. 2018-195501, filed on Oct. 17, 2018, the entire disclosure of which is incorporated herein by reference.
- The present invention relates to a paper sheet stacking apparatus and an image forming system.
- A paper sheet stacking apparatus that stacks a large amount of paper sheets supplied from the outside of the paper sheet stacking apparatus is conventionally known. In this type of paper sheet stacking apparatus, there is known a configuration in which a tray configured to stack paper sheets and a carriage capable of transporting the paper sheets to the outside of the paper sheet stacking apparatus are included and delivery of the paper sheets to the carriage can be performed for each tray. According to this configuration, when the paper sheets are transported to the outside of the paper sheet stacking apparatus by the carriage, the paper sheets can be delivered together with the tray to the carriage, and therefore a large amount of stacked paper sheets can be easily handled.
- For example, JP 2008-94581 A discloses a paper sheet stacking apparatus (sheet stacking apparatus) including a tray lifting and lowering member, a tray means, a driving means, a control means, and a carrier means. The tray means is attached to the tray lifting and lowering member in an attachable and detachable manner and configured to stack paper sheets (sheets) from a discharge port. The driving means is configured to lift and lower the tray lifting and lowering member below the discharge port. The control means is configured to control the driving means. The carrier means is configured to attach thereto the tray means separated from the tray elevating member and transport the tray means to the outside of the paper sheet stacking apparatus. In this case, the tray lifting and lowering member and the carrier means are configured to take over the tray means from each other and attach the tray means thereto at an attaching and detaching position to which the tray lifting and lowering member has lowered.
- However, according to a technique disclosed in JP 2008-94581 A, the paper sheet is delivered to the carriage together with the tray. Therefore, there is a disadvantage that discharge of the paper sheet needs to be stopped from when the tray inside the paper sheet stacking apparatus is delivered to the carriage until the tray is returned to the inside of the paper sheet stacking apparatus, which causes downtime to occur.
- The present invention has been made in view of such circumstances, and an object of the present invention is to provide a paper sheet stacking apparatus and an image forming system capable of suppressing the occurrence of downtime.
- To achieve the abovementioned object, according to an aspect of the present invention, a paper sheet stacking apparatus reflecting one aspect of the present invention comprises: a first tray that stacks a paper sheet; a sheet discharger that discharges a paper sheet supplied from the outside of the paper sheet stacking apparatus to the first tray; a second tray that receives the paper sheet stacked on the first tray and discharges the received paper sheet to the outside of the paper sheet stacking apparatus; and a hardware processor that controls operation states of the first tray and the second tray, wherein the first tray and the second tray have: a first operation state in which the first tray is positioned at a paper sheet stacking position at which the paper sheet discharged from the sheet discharger is stacked and the second tray is positioned below the first tray; a second operation state in which an upper surface of the second tray is positioned above an upper surface of the first tray and the paper sheet stacked on the first tray is deliverable to the second tray; and a third operation state in which the first tray that has delivered the paper sheet to the second tray is returned to the paper sheet stacking position.
- The advantages and features provided by one or more embodiments of the invention will become more fully understood from the detailed description given hereinbelow and the appended drawings which are given by way of illustration only, and thus are not intended as a definition of the limits of the present invention:
-
FIG. 1 is a front view schematically showing a configuration of an image forming system according to a first embodiment; -
FIG. 2 is a configuration view showing the main parts of a paper sheet stacking apparatus mainly including a first tray and a second tray; -
FIG. 3 is a descriptive view showing a relationship between the second tray and the first tray; -
FIG. 4 is a flowchart showing a flow of the operation of the image forming system; -
FIGS. 5A to 5F are descriptive views for describing a flow of the operation of the paper sheet stacking apparatus; -
FIG. 6 is a descriptive view showing a configuration of a paper sheet stacking apparatus according to a second embodiment; -
FIGS. 7A to 7E are views for describing an outline of a flow of the operation of the paper sheet stacking apparatus according to the second embodiment; -
FIG. 8 is a descriptive view showing a configuration of a paper sheet stacking apparatus according to a third embodiment; -
FIGS. 9A to 9F are views for describing an outline of a flow of the operation of the paper sheet stacking apparatus according to the third embodiment; -
FIG. 10 is a front view of the paper sheet stacking apparatus showing a modification of the first tray and the second tray; and -
FIGS. 11A to 11C are views for describing an outline of a flow of the operation of the modification of the first tray and the second tray. - Hereinafter, one or more embodiments of the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the disclosed embodiments.
-
FIG. 1 is a front view schematically showing a configuration of an image forming system according to the present embodiment. The image forming system according to the present embodiment includes animage forming apparatus 1 and a papersheet stacking apparatus 2. - The
image forming apparatus 1 is an electrophotographic image forming apparatus such as a copying machine and is configured to form an image on a paper sheet P on the basis of image data. Theimage forming apparatus 1 includes adocument reading device 5, aphotoreceptor 11, acharging part 12, animage exposing part 13, a developingpart 14, atransfer part 15A, aseparator 15B, acleaning device 16, afixing device 18, and animage formation controller 19. - The
document reading device 5 is disposed on the upper part of a housing of theimage forming apparatus 1 and includes an automatic document feeder configured to automatically move a document when an image is read. Thedocument reading device 5 is configured to read the image formed on the document and output a predetermined image signal. The output image signal is created as image data by being subjected to an analog-to-digital conversion. - An image reading controller (not shown) included in the
document reading device 5 is configured to subject the image data to processing such as shading correction, dither processing, compression and output data obtained by the processing, as final image data, to theimage formation controller 19. Note that theimage formation controller 19 not only obtains the image data from thedocument reading device 5 but also may obtain image data from a personal computer connected to theimage forming apparatus 1 or anotherimage forming apparatus 1. - The surface of the
photoreceptor 11 is uniformly charged by thecharging part 12. Theimage exposing part 13 is configured to scan and expose the surface of thephotoreceptor 11 with a laser beam on the basis of output information output from theimage formation controller 19 on the basis of the image data. Thus, a latent image is formed on the surface of thephotoreceptor 11. The developingpart 14 is configured to develop the latent image with toner to form an image (toner image) on the surface of thephotoreceptor 11. - The paper sheet P accommodated in a
paper sheet tray 17A is fed to thetransfer part 15A. Thetransfer part 15A is configured to transfer the image on the surface of thephotoreceptor 11 to the paper sheet P. Theseparator 15B is configured to separate the paper sheet P to which the image is transferred from thephotoreceptor 11. Thecleaning device 16 is configured to remove the toner remaining on the surface of thephotoreceptor 11 after the image is transferred to the paper sheet P. Anintermediate conveyance part 17B is configured to convey the separated paper sheet P to thefixing device 18. - The
fixing device 18 is configured to subject the paper sheet P to fixing processing to fix the image by heating and pressing. A papersheet discharge roller 17C is configured to discharge the paper sheet P subjected to the fixing processing to the outside of theimage forming apparatus 1. - Meanwhile, when an image is formed on both sides of the paper sheet P, an conveyance direction of the paper sheet P subjected to the fixing processing by the
fixing device 18 is switched from a side of the papersheet discharge roller 17C to a lower side (side of areverse conveyance part 17E) by a conveyancepath switching plate 17D. Thereverse conveyance part 17E is configured to reverse the front and back of the paper sheet P by switching back the paper sheet P and then convey the paper sheet P to thetransfer part 15A. - The
image formation controller 19 is configured to control theimage forming apparatus 1. As theimage formation controller 19, a microcomputer mainly including a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), and an input/output (I/O) interface can be used. The CPU is configured to execute various programs (processors). The ROM is configured to store various programs executed by the CPU in the form of program codes readable by the CPU. Furthermore, the ROM is configured to store data necessary for execution of the programs. The RAM is a memory configured to serve as a working storage area. The programs and data stored in the ROM are expanded on the RAM when the programs and data are read by the CPU. Then, the CPU is configured to perform various processing on the basis of the programs and data expanded on the RAM. - The paper
sheet stacking apparatus 2 is an apparatus configured to stack and accommodate the paper sheet P when the paper sheet P supplied from theimage forming apparatus 1 is taken into the inside of the papersheet stacking apparatus 2. The papersheet stacking apparatus 2 is disposed on a downstream side of theimage forming apparatus 1 in a paper sheet conveyance direction so that the papersheet stacking apparatus 2 is adjacent to theimage forming apparatus 1. The papersheet stacking apparatus 2 mainly includes apaper sheet discharger 20, afirst tray 21, a lifting and loweringdevice 24, asecond tray 25, a front-rear driving device 28, and a stackingcontroller 31. Here,FIG. 2 is a configuration view showing the main parts of the papersheet stacking apparatus 2 mainly including thefirst tray 21 and thesecond tray 25. - When receiving the paper sheet P supplied from the
image forming apparatus 1, thepaper sheet discharger 20 takes the paper sheet P into the inside of the paper sheet stacking apparatus 2 (inside of ahousing 2 a) and discharges the paper sheet P into thefirst tray 21. A position of thepaper sheet discharger 20 is set to correspond to a position of the papersheet discharge roller 17C of theimage forming apparatus 1. - The
first tray 21 is a tray on which the paper sheet P discharged from thepaper sheet discharger 20 is stacked. Thefirst tray 21 is movable along an up-and-down direction. Thefirst tray 21 includes a plurality offirst support members 22 formed in a comb shape. The plurality offirst support members 22 is arranged horizontally at a predetermined pitch along the paper sheet conveyance direction. Eachfirst support member 22 extends from abase member 23 positioned on a rear side (rear side of the paper sheet stacking apparatus 2) to a front side (front side of the paper sheet stacking apparatus 2). - The lifting and lowering
device 24 is a device configured to lift and lower (move) thefirst tray 21 along the up-and-down direction. The lifting and loweringdevice 24 mainly includes a drive motor, a drive pulley, a driven pulley, and a timing belt. The drive pulley is configured to rotate by receiving power from the drive motor. The timing belt is stretched between the drive pulley and the driven pulley and connects thefirst tray 21. The lifting and loweringdevice 24 is controlled by the stackingcontroller 31. - The lifting and lowering
device 24 is configured to set thefirst tray 21 to a home position. The home position corresponds to a position of thefirst tray 21 when the stacking of the paper sheet P is started. When the paper sheet P is discharged from thepaper sheet discharger 20, the lifting and loweringdevice 24 lowers (moves) thefirst tray 21 so that the uppermost paper sheet P stacked on thefirst tray 21 maintains a predetermined height. The lowering of thefirst tray 21 in association with the stacking of the paper sheet P is performed until the number of the paper sheets P stacked on thefirst tray 21 reaches the upper limit number of paper sheets or the set number of paper sheets. The upper limit number of paper sheets is set by setting the maximum number of the paper sheets P that can be stacked on thefirst tray 21. The upper limit number of paper sheets is set, for example, by mechanical restrictions caused by the structure of the papersheet stacking apparatus 2. Meanwhile, the set number of paper sheets is, for example, the number of the paper sheets set by a user within the maximum number of the paper sheets P to be stacked on thefirst tray 21 and any number of the paper sheets is set in the range of one or more paper sheets and less than the upper limit number of paper sheets. Positions from the home position to a position at which thefirst tray 21 reaches when the paper sheets P, the number of which corresponds to the upper limit number of paper sheets are stacked correspond to a paper sheet stacking position of thefirst tray 21. - Meanwhile, when the number of the paper sheets P stacked on the
first tray 21 has reached the upper limit number of paper sheets or the set number of paper sheets, the lifting and loweringdevice 24 lowers thefirst tray 21 to a paper sheet delivery position at which the paper sheet P is delivered to thesecond tray 25. Furthermore, when the delivery of the paper sheet P from thefirst tray 21 to thesecond tray 25 is completed, the lifting and loweringdevice 24 lifts (moves) thefirst tray 21 from the paper sheet delivery position to the home position. - The
second tray 25 is disposed below thefirst tray 21. Thesecond tray 25 is a tray for receiving the paper sheet P stacked on thefirst tray 21 from thefirst tray 21. Thesecond tray 25 includes a plurality ofsecond support members 26 formed in a comb shape. The plurality ofsecond support members 26 is arranged horizontally at a predetermined pitch along the paper sheet conveyance direction. Eachsecond support member 26 stands on abase member 27 positioned below thesecond support member 26. -
FIG. 3 is a descriptive view showing a relationship between thesecond tray 25 and thefirst tray 21. The plurality ofsecond support members 26 is provided at positions corresponding to a plurality of clearances formed in thefirst tray 21, that is, spaces existing between thefirst support members 22 adjacent to each other. Therefore, even in a case where thefirst tray 21 moves downward and thefirst tray 21 and thesecond tray 25 exist on the same horizontal plane, thefirst tray 21 and thesecond tray 25 do not interfere with each other. That is, thefirst tray 21 and thesecond tray 25 can pass each other in the up-and-down direction. With this configuration, anupper surface 21 a of thefirst tray 21 is lowered below anupper surface 25 a of thesecond tray 25, whereby the paper sheet P stacked on thefirst tray 21 can be delivered to thesecond tray 25. The paper sheet delivery position described above is determined in advance according to a height of thesecond tray 25, as a position at which theupper surface 21 a of thefirst tray 21 exists below theupper surface 25 a of thesecond tray 25. - The front-
rear driving device 28 includes apedestal part 29 and a drivingpart 30. On thepedestal part 29, thesecond tray 25 is mounted in an attachable and detachable manner. The drivingpart 30 is configured to move thepedestal part 29 along a front-rear direction and discharge thesecond tray 25 to the outside of the papersheet stacking apparatus 2. The drivingpart 30 mainly includes a driving motor, a driving pulley, a driven pulley, and a timing belt. The driving pulley is configured to rotate by receiving power from the driving motor. The timing belt is stretched between the driving pulley and the driven pulley and connects thepedestal part 29. The front-rear driving device 28 is controlled by the stackingcontroller 31. - The front-
rear driving device 28 is configured to set thesecond tray 25 to the home position. The home position exists below thefirst tray 21 inside the papersheet stacking apparatus 2 and is a position at which the paper sheet P can be delivered from thefirst tray 21 when thefirst tray 21 has lowered. When the paper sheet P is delivered from thefirst tray 21, the front-rear driving device 28 moves thesecond tray 25 to the front side and discharges thesecond tray 25 to the outside of the papersheet stacking apparatus 2. Thus, when thesecond tray 25 is removed from thepedestal part 29, thesecond tray 25 is attached to acarriage 40 configured to convey the paper sheet P. As a result, the paper sheet P can be conveyed together with thesecond tray 25 through thecarriage 40. - Meanwhile, when the paper sheet P is removed from the
second tray 25 mounted on thecarriage 40, thesecond tray 25 is removed from thecarriage 40 and attached to thepedestal part 29. When thesecond tray 25 is attached to thepedestal part 29, the front-rear driving device 28 moves thesecond tray 25 to the rear side and returns thesecond tray 25 to the home position. Note that thehousing 2 a of the papersheet stacking apparatus 2 is provided with a shutter (not shown). The shutter is opened and closed according to the entry and exit of thesecond tray 25. - The stacking
controller 31 is configured to control the papersheet stacking apparatus 2. As the stackingcontroller 31, a microcomputer mainly including a CPU, a ROM, a RAM, and an I/O interface can be used. The CPU is configured to execute various programs (processors). The ROM is configured to store various programs executed by the CPU in the form of program codes readable by the CPU. Furthermore, the ROM is configured to store data necessary for execution of the programs. The RAM is a memory configured to serve as a working storage area. The programs and data stored in the ROM are expanded on the RAM when the programs and data are read by the CPU. Then, the CPU is configured to perform various processing on the basis of the programs and data expanded on the RAM. - Hereinafter, the operation of the image forming system according to the present embodiment will be described. Here,
FIG. 4 is a flowchart showing a flow of the operation of the image forming system. Furthermore,FIGS. 5A to 5F are views for describing a flow of the operation of the papersheet stacking apparatus 2. Processing shown in the flowchart is executed by theimage formation controller 19 and the stackingcontroller 31 using a print start instruction of the user as a trigger. - First, in step S10, the
image formation controller 19 controls each part of theimage forming apparatus 1 to execute image forming operation. By this image forming operation, a series of processing such as sheet feeding of the paper sheet P, image formation on the fed paper sheet P, and discharge of the paper sheet P on which the image is formed to the papersheet stacking apparatus 2 is performed. Similarly, the stackingcontroller 31 controls thepaper sheet discharger 20, receives the paper sheet P supplied from theimage forming apparatus 1 at thepaper sheet discharger 20, and discharges the paper sheet P to the first tray 21 (FIG. 5A ). - In step S11, the stacking
controller 31 determines whether the number of the paper sheets P stacked on thefirst tray 21 has reached the upper limit number of paper sheets or the set number of paper sheets. In a case where the number of the paper sheets P stacked on thefirst tray 21 has reached the upper limit number of paper sheets or the set number of paper sheets, a positive determination is made in step S11, and the processing proceeds to step S12. Meanwhile, when the number of the paper sheets P stacked on thefirst tray 21 has not reached the upper limit number of paper sheets or the set number of paper sheets, a negative determination is made in step S11, and the processing returns to step S10. - In step S12, the
image formation controller 19 controls each part of theimage forming apparatus 1 to stop the image forming operation. Similarly, the stackingcontroller 31 controls thepaper sheet discharger 20 to stop sheet discharge of the paper sheet P to thefirst tray 21. - In step S13, the stacking
controller 31 controls the lifting and loweringdevice 24 to cause thefirst tray 21 to perform lowering operation (FIG. 5B ). The lowering operation of thefirst tray 21 is performed until thefirst tray 21 reaches the paper sheet delivery position. The paper sheet delivery position is set according to the height of thesecond tray 25 mounted on thepedestal part 29. When thefirst tray 21 reaches the paper sheet delivery position, since theupper surface 25 a of thesecond tray 25 reaches above theupper surface 21 a of thefirst tray 21, the paper sheet P stacked on thefirst tray 21 is delivered from thefirst tray 21 to the second tray 25 (FIG. 5C ). - In step S14, the stacking
controller 31 controls the front-rear driving device 28 to cause thepedestal part 29 to perform forward operation (FIG. 5D ). This forward operation is performed until thepedestal part 29 and thesecond tray 25 mounted on thepedestal part 29 are discharged to the outside of the papersheet stacking apparatus 2. - In step S15, the stacking
controller 31 controls the lifting and loweringdevice 24 to cause the lift thefirst tray 21 to perform upward operation (FIG. 5E ). The lifting operation of thefirst tray 21 is performed until thefirst tray 21 reaches the home position. - The
second tray 25 discharged to the outside of the papersheet stacking apparatus 2 is removed from thepedestal part 29 with the paper sheet P stacked and is attached to thecarriage 40 provided outside the paper sheet stacking apparatus 2 (FIG. 5F ). Thesecond tray 25 and the paper sheet P stacked on thesecond tray 25 can be conveyed through thecarriage 40. - In step S16, the
image formation controller 19 controls each part of theimage forming apparatus 1 to restart the image forming operation. Similarly, the stackingcontroller 31 controls thepaper sheet discharger 20 to restart the discharge of the paper sheet P to thefirst tray 21. The restart of the image forming operation and the restart of sheet discharge to thefirst tray 21 are executed so that the paper sheet P is discharged to thefirst tray 21 at timing when thefirst tray 21 has reached the home position or at timing slightly later than when thefirst tray 21 has reached the home position. - In step S17, the
image formation controller 19 determines whether the job has ended. In a case where the job has ended, a positive determination is made in step S17, and this routine ends. Meanwhile, in a case where the job has not ended, a negative determination is made in step S17, and the processing returns to step S10. - When the paper sheet P stacked on the
second tray 25 is removed and thesecond tray 25 is emptied, thesecond tray 25 is removed from thecarriage 40 and attached to thepedestal part 29. When thesecond tray 25 is attached, the stackingcontroller 31 controls the front-rear driving device 28 to cause thepedestal part 29 to perform backward operation. This backward operation is performed until thepedestal part 29 and thesecond tray 25 mounted on thepedestal part 29 reach the home position. Thus, thesecond tray 25 is returned to the inside of the papersheet stacking apparatus 2. - Note that the
second tray 25 is preferably returned to thepedestal part 29 before the number of the paper sheets P stacked on thefirst tray 21 reaches the upper limit number of paper sheets or the set number of paper sheets. Furthermore, since there is a possibility that thepedestal part 29 becomes an obstacle if thepedestal part 29 stays discharged to the outside of the papersheet stacking apparatus 2, thepedestal part 29 may be returned to the inside of the papersheet stacking apparatus 2 until thesecond tray 25 is removed from thepedestal part 29 and then may be attached to thepedestal part 29 again. - As described above, in the present embodiment, the
first tray 21 and thesecond tray 25 have at least three operation states as operation states thereof. Specifically, a first operation state is an operation state in which thefirst tray 21 is at the paper sheet stacking position at which the paper sheet P discharged from thepaper sheet discharger 20 is stacked, and thesecond tray 25 is positioned below thefirst tray 21. A second operation state is an operation state in which theupper surface 25 a of thesecond tray 25 is positioned above theupper surface 21 a of thefirst tray 21, and the paper sheet P stacked on thefirst tray 21 can be delivered to thesecond tray 25. Furthermore, a third operation state is an operation state in which thefirst tray 21 that has delivered the paper sheet P to thesecond tray 25 is returned to the paper sheet stacking position. - According to this configuration, since the paper sheet P can be delivered to the
second tray 25, the paper sheet P can be taken out of the papersheet stacking apparatus 2 via thesecond tray 25 while thefirst tray 21 is left in the papersheet stacking apparatus 2. Furthermore, thefirst tray 21 that has delivered the paper sheet P to thesecond tray 25 can be returned to the paper sheet stacking position (home position). Therefore, the stacking of the paper sheet P on thefirst tray 21 can be restarted promptly. As a result, the occurrence of downtime can be suppressed. - Furthermore, each of the
first tray 21 and thesecond tray 25 includes clearances for passing the other tray so that thefirst tray 21 and thesecond tray 25 do not interfere with each other on the same plane. Specifically, thefirst tray 21 and thesecond tray 25 are each set in a comb shape. - According to this configuration, since the
first tray 21 and thesecond tray 25 do not interfere with each other on the same plane, theupper surface 21 a of thefirst tray 21 can be reached below theupper surface 25 a of thesecond tray 25. Thus, the paper sheet P can be easily delivered from thefirst tray 21 to thesecond tray 25. - Furthermore, in the paper
sheet stacking apparatus 2 according to the present embodiment, thefirst tray 21 reaches the paper sheet delivery position according to the height of thesecond tray 25, whereby the first operation state changes to the second operation state. - According to this configuration, the paper sheet P can be easily delivered from the
first tray 21 to thesecond tray 25 by moving thefirst tray 21. - Furthermore, in the present embodiment, in the first operation state, the
second tray 25 is positioned below thefirst tray 21 and the first tray lowers, whereby the first operation state changes to the second operation state. - According to this configuration, the paper sheet P can be easily delivered from the
first tray 21 to thesecond tray 25 by moving thefirst tray 21 in the up-and-down direction. Furthermore, since thefirst tray 21 has a function of lifting and lowering in the up-and-down direction when the paper sheet P is stacked, the paper sheet P can be delivered from thefirst tray 21 to thesecond tray 25, using the existing configuration. - Furthermore, in the present embodiment, the paper
sheet stacking apparatus 2 further includes thepedestal part 29 configured to move between the inside of the papersheet stacking apparatus 2 and the outside of the papersheet stacking apparatus 2. In this case, thesecond tray 25 is mounted on thepedestal part 29. According to this configuration, thesecond tray 25 can be moved between the inside of the papersheet stacking apparatus 2 and the outside of the papersheet stacking apparatus 2 by moving thepedestal part 29. - Furthermore, in the present embodiment, the
second tray 25 is mounted on thepedestal part 29 in an attachable and detachable manner. According to this configuration, since thesecond tray 25 can be attached and detached, the paper sheet P can be handled together with thesecond tray 25. - Furthermore, in the present embodiment, the paper
sheet stacking apparatus 2 further includes thecarriage 40 on which thesecond tray 25 discharged to the outside of the papersheet stacking apparatus 2 is mounted and that is configured to convey thesecond tray 25. - According to this configuration, since the
second tray 25 can be transported by thecarriage 40, a large amount of the paper sheets P can be easily conveyed. - Hereinafter, an image forming system according to a second embodiment will be described. The image forming system according to the second embodiment differs from that according to the first embodiment in the configuration of the paper
sheet stacking apparatus 2. Descriptions of contents overlapping the first embodiment will be omitted, and hereinafter, differences will be mainly described. -
FIG. 6 is a descriptive view showing a configuration of a papersheet stacking apparatus 2 according to the second embodiment. The papersheet stacking apparatus 2 mainly includes a paper sheet discharger 20 (not shown inFIG. 6 ), afirst tray 21, a lifting and loweringdevice 24, asecond tray 25, acarriage 40, and a stackingcontroller 31. Configurations of thepaper sheet discharger 20, thefirst tray 21, the lifting and loweringdevice 24, and the stackingcontroller 31 are similar to those in the first embodiment. - In the present embodiment, the
second tray 25 is mounted on thecarriage 40 accommodated inside the papersheet stacking apparatus 2. Thecarriage 40 is configured to convey thesecond tray 25 and can be moved from the inside of the papersheet stacking apparatus 2 to the outside of the papersheet stacking apparatus 2. - Hereinafter, the operation of the paper
sheet stacking apparatus 2 according to the present embodiment will be described.FIGS. 7A to 7E are views for describing an outline of a flow of the operation of the papersheet stacking apparatus 2 according to the second embodiment. - First, discharge of a paper sheet P discharged from an
image forming apparatus 1 to thefirst tray 21 is started (FIG. 7A ). When the number of the paper sheets P stacked on thefirst tray 21 reaches the upper limit number of paper sheets or the set number of paper sheets, the stackingcontroller 31 controls the lifting and loweringdevice 24 to cause the lower thefirst tray 21 to perform lowering operation (FIG. 7B ). The lowering operation of thefirst tray 21 is performed until thefirst tray 21 reaches the paper sheet delivery position. The paper sheet delivery position is set according to a height of thesecond tray 25 mounted on thecarriage 40. When thefirst tray 21 reaches the paper sheet delivery position, since anupper surface 25 a of thesecond tray 25 reaches above anupper surface 21 a of thefirst tray 21, the paper sheet P stacked on thefirst tray 21 is delivered from thefirst tray 21 to the second tray 25 (FIG. 7C ). - The
carriage 40 from which the paper sheet P has been delivered to thesecond tray 25 is carried out of the papersheet stacking apparatus 2 by a user (FIG. 7D ). When the stackingcontroller 31 determines that thecarriage 40 has been carried out of the papersheet stacking apparatus 2, using a detection result of a sensor (not shown), the stackingcontroller 31 controls the lifting and loweringdevice 24 to cause thefirst tray 21 to perform upward operation (seeFIG. 7E ). The lifting operation of thefirst tray 21 is performed until thefirst tray 21 reaches the home position. - The
second tray 25 carried out together with thecarriage 40 can be conveyed to a target location through thecarriage 40. Then, thefirst tray 21 returns to the home position, whereby image forming operation and the discharge of the paper sheet P to thefirst tray 21 are started. - As described above, according to the present embodiment, the
second tray 25 is mounted on thecarriage 40, and thecarriage 40 is accommodatable inside the papersheet stacking apparatus 2. - According to this configuration, the
second tray 25 and the paper sheet P can be moved between the outside and the inside of the papersheet stacking apparatus 2, using thecarriage 40. Furthermore, since thecarriage 40 is accommodated inside the papersheet stacking apparatus 2, there is no need to transfer thesecond tray 25 to thecarriage 40. Thus, the paper sheet P delivered from thefirst tray 21 can be easily conveyed. - Hereinafter, an image forming system according to a third embodiment will be described. The image forming system according to the third embodiment differs from that the first embodiment in the configuration of the paper
sheet stacking apparatus 2. Hereinafter, descriptions of contents overlapping with the first embodiment will be omitted, and hereinafter, differences will be mainly described. -
FIG. 8 is a descriptive view showing a configuration of a papersheet stacking apparatus 2 according to the third embodiment. The papersheet stacking apparatus 2 mainly includes a paper sheet discharger 20 (not shown inFIG. 8 ), afirst tray 21, a lifting and loweringdevice 24, a plurality ofsecond trays 25, a front-rear driving device 28, and a stackingcontroller 31. Configurations of thepaper sheet discharger 20, thefirst tray 21, the lifting and loweringdevice 24, the front-rear driving device 28, and the stackingcontroller 31 are similar to those in the first embodiment. - In the present embodiment, the plurality of
second trays 25 is mounted on apedestal part 29 while being stacked in an up-and-down direction. A configuration of eachsecond tray 25 is similar to that of the first embodiment. - Hereinafter, the operation of the paper
sheet stacking apparatus 2 according to the present embodiment will be described.FIGS. 9A to 9F are views for describing an outline of a flow of the operation of the papersheet stacking apparatus 2 according to the third embodiment. - First, when a paper sheet P discharged from an
image forming apparatus 1 is discharged to thefirst tray 21 and the number of the paper sheets P stacked on thefirst tray 21 reaches the upper limit number of paper sheets or the set number of paper sheets, the stackingcontroller 31 controls the lifting and loweringdevice 24 to cause thefirst tray 21 to perform lowering operation (FIG. 9A ). The lowering operation of thefirst tray 21 is performed until thefirst tray 21 reaches the paper sheet delivery position. The paper sheet delivery position is set according to a height of the uppermostsecond tray 25 among the plurality ofsecond trays 25 mounted on thepedestal part 29. More specifically, the paper sheet delivery position is set to be in a relationship such that anupper surface 25 a of the uppermostsecond tray 25 is positioned above anupper surface 21 a of thefirst tray 21 when thefirst tray 21 reaches the paper sheet delivery position. When thefirst tray 21 reaches the paper sheet delivery position, since theupper surface 25 a of the uppermostsecond tray 25 reaches above theupper surface 21 a of thefirst tray 21, the paper sheet P stacked on thefirst tray 21 is delivered from thefirst tray 21 to the uppermost second tray 25 (FIG. 9B ). - When delivery of the paper sheet P to the
second tray 25 is performed, thepedestal part 29 is caused to perform forward operation, whereby thesecond tray 25 is discharged to the outside of the papersheet stacking apparatus 2. Thus, the uppermostsecond tray 25 is removed from thepedestal part 29 and attached to acarriage 40 provided outside the papersheet stacking apparatus 2. When the uppermostsecond tray 25 is attached to thecarriage 40, thepedestal part 29 is returned to a home position. Thus, the remainingsecond tray 25 return to the inside of the paper sheet stacking apparatus 2 (FIG. 9C ). - When the remaining
second trays 25 return to the inside of the papersheet stacking apparatus 2, the stackingcontroller 31 controls the lifting and loweringdevice 24 to cause thefirst tray 21 to perform upward operation (FIG. 9D ). The lifting operation of thefirst tray 21 is performed until thefirst tray 21 reaches the home position. Thefirst tray 21 returns to the home position, whereby the image forming operation and the discharge of the paper sheet P to thefirst tray 21 are started. Then, the above operation is repeated for the new uppermost second tray 25 (FIGS. 9E and 9F ). - As described above, in the present embodiment, the plurality of
second trays 25 is stacked in the up-and-down direction. In this case, the paper sheet delivery position is switched according to a height of thesecond tray 25 positioned at the uppermost position. - According to this configuration, since the plurality of
second trays 25 is provided, even if onesecond tray 25 is discharged to the outside of the papersheet stacking apparatus 2, the paper sheet P can be delivered to thesecond tray 25 remaining on thepedestal part 29 without waiting until thesecond tray 25 returns. Thus, the occurrence of downtime can be suppressed. - Note that in each embodiment described above, each of the
first tray 21 and thesecond tray 25 includes clearances for passing the tray on the other side so that thefirst tray 21 and thesecond tray 25 do not interfere with each other on the same plane. However, a method of delivering the paper sheet P from thefirst tray 21 to thesecond tray 25 is not limited to this. Here,FIG. 10 is a front view of the papersheet stacking apparatus 2 showing a modification of thefirst tray 21 and thesecond tray 25. - Specifically, a
second tray 25 is disposed on a side of a first tray so that thesecond tray 25 is arranged side by side with thefirst tray 21. According to this modification, thefirst tray 21 and thesecond tray 25 can suppress interference with each other on the same plane without including clearances for passing the tray on the other side. - In this modification, when the number of the paper sheets P stacked on the
first tray 21 reaches the set number of paper sheets or the upper limit number of paper sheets, a stackingcontroller 31 controls a lifting and loweringdevice 24 to cause thefirst tray 21 to perform lowering operation (seeFIG. 11A ). The lowering operation of thefirst tray 21 is performed until thefirst tray 21 reaches the paper sheet delivery position. The paper sheet delivery position is set according to a height of the second tray 25 (FIG. 11B ). More specifically, the paper sheet delivery position is set to be in a relationship such that anupper surface 25 a of thesecond tray 25 that is arranged side by side with thefirst tray 21 when thefirst tray 21 reaches the paper sheet delivery position is positioned above theupper surface 21 a of thefirst tray 21. The delivery of the paper sheet P from thefirst tray 21 to thesecond tray 25 can be performed using any method. For example, a belt conveyor is used. When the delivery of the paper sheet P is completed, thefirst tray 21 returns to a home position (FIG. 11C ). Thus, the image forming operation and the discharge of the paper sheet P to thefirst tray 21 can be started. - Although the image forming system and the paper sheet stacking apparatus according to the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention.
- For example, in the present embodiments, the image forming system includes the image forming apparatus configured to serve an image forming function and the paper sheet stacking apparatus configured to stack the paper sheet. However, a sheet processing device itself that constitutes the image forming system also functions as an aspect of the present invention. Furthermore, in addition to a configuration in which the image forming system includes the image forming apparatus and the paper sheet stacking apparatus as independent apparatuses, there may be a configuration in which an image forming system includes a paper sheet stacking apparatus as one function of an image forming apparatus.
- Furthermore, in the present embodiments, the paper sheet stacking apparatus includes the dedicated controller (stacking controller), and the stacking controller executes control of the paper sheet stacking apparatus. However, the image formation controller configured to control the image forming apparatus may control the paper sheet stacking apparatus. In this case, the stacking controller may be omitted.
- Furthermore, in the present embodiments, the paper sheet P widely includes not only a recording medium manufactured using pulp as a main raw material but also a recording medium capable of forming an image by the image forming apparatus.
- Furthermore, in the present embodiments, the first tray is moved when the paper sheet is delivered. However, the second tray may be moved and reached to the paper sheet delivery position according to the height of the first tray, that is, a position at which the upper surface of the second tray is above the upper surface of the first tray, whereby the first operation state is changed to the second operation state. Furthermore, both the first tray and the second tray may be moved to change from the first operation state to the second operation state.
- Although embodiments of the present invention have been described and illustrated in detail, the disclosed embodiments are made for purposes of illustration and example only and not limitation. The scope of the present invention should be interpreted by terms of the appended claims.
Claims (12)
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JP2018-195501 | 2018-10-17 | ||
JP2018195501A JP2020063122A (en) | 2018-10-17 | 2018-10-17 | Sheet loader and image forming system |
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US16/653,039 Abandoned US20200122952A1 (en) | 2018-10-17 | 2019-10-15 | Paper Sheet Stacking Apparatus and Image Forming System |
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US (1) | US20200122952A1 (en) |
JP (1) | JP2020063122A (en) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US20230002177A1 (en) * | 2019-12-19 | 2023-01-05 | Bobst Mex Sa | Device and method for changing a sheet pile in a sheet pile feeder |
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JP7255379B2 (en) * | 2019-06-14 | 2023-04-11 | コニカミノルタ株式会社 | Image forming system, sheet stacking device, and sheet stacking method |
JP7435229B2 (en) * | 2020-05-13 | 2024-02-21 | コニカミノルタ株式会社 | An image forming system, a method for controlling the image forming system, and a program for causing a computer to execute the control method |
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JP2932269B1 (en) * | 1998-06-01 | 1999-08-09 | 株式会社ニチレイ | Pallet supply device and baggage sorting facility |
JP2008024473A (en) * | 2006-07-24 | 2008-02-07 | Canon Finetech Inc | Sheet loading device and image forming device |
JP4769162B2 (en) * | 2006-10-13 | 2011-09-07 | ニスカ株式会社 | Sheet stacking apparatus and image forming apparatus provided with the same |
JP4766687B2 (en) * | 2006-10-13 | 2011-09-07 | ニスカ株式会社 | Sheet stacking apparatus and image forming system having the same |
JP2009040609A (en) * | 2008-10-21 | 2009-02-26 | Duplo Seiko Corp | Paper receiving device for paper handling machine |
US20110014021A1 (en) * | 2009-07-20 | 2011-01-20 | Xerox Corporation | Method and system for transferring a load |
US20120288354A1 (en) * | 2011-05-11 | 2012-11-15 | Xerox Corporation | Load transferring mechanism in a sheet-feeding system |
JP6027876B2 (en) * | 2012-12-07 | 2016-11-16 | キヤノン株式会社 | Printing system and control method and program therefor |
JP6399858B2 (en) * | 2014-08-25 | 2018-10-03 | キヤノン株式会社 | Printing system and control method and program therefor |
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2018
- 2018-10-17 JP JP2018195501A patent/JP2020063122A/en active Pending
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- 2019-10-14 CN CN201910972764.XA patent/CN111056355B/en active Active
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20230002177A1 (en) * | 2019-12-19 | 2023-01-05 | Bobst Mex Sa | Device and method for changing a sheet pile in a sheet pile feeder |
US12006172B2 (en) * | 2019-12-19 | 2024-06-11 | Bobst Mex Sa | Device and method for changing a sheet pile in a sheet pile feeder |
Also Published As
Publication number | Publication date |
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JP2020063122A (en) | 2020-04-23 |
CN111056355B (en) | 2022-04-05 |
CN111056355A (en) | 2020-04-24 |
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