JP4176903B2 - Output storage device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper discharge storage device connected to an image forming apparatus such as a printing apparatus or a copier, and in particular, a bin tray unit that distributes and stores paper into a plurality of bin trays and a paper discharge tray that stacks paper in a batch. The present invention relates to a paper discharge storage device having
[0002]
[Prior art]
Conventionally, as a paper discharge storage device attached to an image forming apparatus such as a printing apparatus or a copying machine, a bin tray unit that distributes and stores paper into a plurality of bin trays, a single paper discharge tray on which paper is stacked, There is a well-known thing in the vertical direction. An example of this paper discharge storage device is disclosed in Japanese Utility Model Laid-Open No. 6-78358, and this paper discharge storage device is provided with a swingable paper conveyance means, and the paper is placed on the bin tray unit side during sorting and the paper is used in non-sorting. The paper transporting means is configured to be swung so as to be stored in the paper discharge tray side.
[0003]
Further, in a conventional image forming apparatus, generally, an image-formed sheet is conveyed by a conveying means such as a conveyor belt, and after passing through a seating member, the sheet is deformed into a U shape, and then discharged. It is discharged and loaded on the tray. This seating member curls a weakly stiff sheet from both ends and makes the cross-sectional shape U-shaped to give the whole sheet a waist, and the sheet does not fall from the leading edge when it is discharged to the discharge tray. Thus, it is for flying away while raising the tip. As an example in which the seating member is applied to a sheet conveying means connected to a paper discharge storage device, for example, those disclosed in Japanese Utility Model Laid-Open Nos. 6-78358 and 6-239002 are known.
[0004]
[Problems to be solved by the invention]
In the technique disclosed in Japanese Utility Model Laid-Open No. 6-78358, the seating member is substantially flush with the sheet conveyance path when sorting, and the seating member is raised when not sorting. In this configuration, no problem occurs at the time of sorting, but there is a problem that good transport cannot be performed when the paper type changes at the time of non-sorting, that is, when the strength of the paper changes. Specifically, when the amount of protrusion of the seating member from the paper transport path is an appropriate value when transporting stiff paper such as cardboard, when transporting weak paper such as thin paper, There is a problem that the amount of seating is insufficient and the paper stalls in the middle, causing the stacking position on the paper output tray to become unstable or causing paper output jams. In the case where the value is appropriate, there is a problem that when a stiff sheet is conveyed, the sheet is lifted from the sheet conveying means, and the sheet cannot be normally conveyed and a paper jam occurs.
[0005]
Further, in the technique disclosed in Japanese Patent Application Laid-Open No. 6-239002, the sheeting member is made substantially flush with the sheet conveyance path when sorting and when a stiff sheet is used, and the sheet is weak when the sheet is not sorted. It is set as the structure which raises a seating member when using. In this configuration, when a stiff sheet is used, the sheet is not seated at all. Therefore, as shown in FIG. 13 of Japanese Utility Model Laid-Open No. 6-78358, the sheet cannot be discharged properly. When a jam occurs or when a stencil printing device is used as the image forming device, the image ink formed on the previous paper is transferred to the bottom surface of the next paper, There is a problem that defects such as rubbing stains that the next sheet rubs against the image surface of the image easily occur.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a paper discharge storage device that can perform a paper discharge storage operation according to the type of paper regardless of whether it is sorted or not.
[0007]
[Means for Solving the Problems]
First aspect of the present invention, a body that will be connected to the image forming apparatus, the bin tray unit for stacking and sorting the sheets discharged from the image forming apparatus is provided in the main body, the image provided in the body A paper discharge tray for collectively stacking the paper discharged from the forming apparatus; a first state for transporting the paper toward the bin tray unit; and a second state for transporting the paper toward the paper discharge tray. And a sheeting member provided with a sheet conveying means swingable to a position , wherein the sheet conveying means protrudes on both sides of the downstream end in the sheet conveying direction , and the seating member A push-up means that pushes up the seating member, and the main body has a projecting member that projects into the swing path of the paper conveying means that can come into contact with the seating member, and the sorting operation is selected. The paper When the feeding means is placed in the first position and the seating member is positioned at the first position that is substantially flush with the paper conveyance path, and a non-sorting operation in which thick paper is used as the paper is selected. The sheet conveying means is placed in the second position and the seating member is brought into contact with the projecting member so that the seating member is positioned at the second position raised from the transport path. When the non-sorting operation using thin paper is selected, the sheet conveying means is placed in the second position to bring the waist member into contact with the projecting member and to actuate the push-up means. Control means for positioning the member at a third position that is further raised than the second position is provided.
[0015]
【Example】
FIG. 1 shows a paper discharge storage apparatus employing one embodiment of the present invention. In FIG. 1, a paper discharge storage device 1 is integrally connected to a stencil printing device 2 as an image forming device.
First, the stencil printing apparatus 2 to which the paper discharge storage apparatus 1 is connected will be schematically described. The stencil printing apparatus 2 includes a plate cylinder 16 that is rotationally driven, a press roller 15 that presses the paper conveyed by the paper feeding device 14 against the outer peripheral surface of the plate cylinder 16, and a peeling claw that peels the paper from the outer peripheral surface of the plate cylinder 16. 17, a paper discharge section 3 for discharging the paper to the outside of the apparatus.
[0016]
A porous cylindrical plate cylinder 16 around which a master made on the outer peripheral surface is wound is rotatably supported by the apparatus main body by a central shaft that also serves as an ink supply pipe, and is driven to rotate by a plate cylinder driving means (not shown). Is done. Inside the plate cylinder 16, a well-known ink supply means (not shown) having an ink roller, a doctor roller and the like is disposed. The press roller 15 and the peeling claw 17 are provided on the outer peripheral surface of the plate cylinder 16 so as to avoid interference with protrusions on the outer peripheral surface of the plate cylinder such as a master locking means (not shown) provided on the outer peripheral surface of the plate cylinder 16. On the other hand, it is provided so as to be able to move in and out and to move forward and backward.
[0017]
The paper discharge unit 3 is disposed in the vicinity of the inside of the paper discharge port a of the apparatus main body, and sucks paper onto the pair of rollers 18, an endless belt 19 wound around each roller 18, and the belt 19. When a driving unit (not shown) drives the endless belt 19 via the roller 18, the sheet is discharged from the discharge port a.
[0018]
Further, an operation panel (not shown) is provided on the upper surface of the main body of the stencil printing apparatus 2. On this operation panel, in addition to known keys such as a plate making start key and a printing start key, the paper used is “thick paper”. Or “thin paper” is provided.
[0019]
The stencil printing device 2 and the paper discharge storage device 1 are placed on the same floor surface 4. In the paper discharge storage device 1, the paper discharge unit facing position A is aligned with the paper discharge unit 3 of the stencil printing device 2, and the connection substrate 10 (see FIG. 2) is attached to a main body frame (not shown) of the stencil printing device 2. Are integrally coupled to each other.
[0020]
The paper discharge storage device 1 includes a frame body 5 that is a rectangular tower-shaped main body that can move on a floor surface 4. A paper discharge tray that includes a bin tray unit 7 and an elevating mechanism 8 inside the frame body 5. 9. An intake section transport means 11 for transporting the paper in the take-in direction X, a distribution section transport means 12, a switching drive means 13 (see FIG. 4) for switching and holding the intake section transport means 11 are provided.
[0021]
The frame 5 is mainly composed of a bottom frame 21, a plurality of vertical frames 22 integrally coupled to the bottom frame 21 and extending in the vertical direction, and a plurality of horizontal frames 23 connecting them. An outer plate P (see FIG. 2) is disposed at a suitable position outside the member. A bin tray unit 7 having a plurality of bin trays 6 and a distribution unit conveying means 12 for distributing sheets to the bin trays 6 are disposed in the upper part of the frame 5.
[0022]
The bin tray unit 7 is arranged between a pair of vertical frames 24 integrally connected between the upper and lower horizontal frames 23 of the frame body 5 and the vertical frames 24 and is equally arranged in the vertical direction. And a plurality of bin trays 6. Each bin tray 6 is provided with attachment portions (not shown) at both left and right ends (front end portion and back end portion in FIG. 1), and is attached to a support portion (not shown) of the vertical frame 24 via the attachment portions. The bin trays 6 are provided so that the inlet side end portions 601 are aligned in the vertical direction, and the vertical interval b at the inlet side end portions 601 of the bin trays 6 adjacent to each other in the vertical direction is predetermined for each bin tray 6. The interval is set so that the number of sheets can be stacked. The portions on the frame 5 that surround the outer peripheral portions of the plurality of bin tray groups are open, so that the operator can easily stack the sheets stacked on the bin trays 6 just by standing in front of the paper discharge storage device 1. Can be taken out.
[0023]
As shown in FIG. 1, the distribution unit conveying means 12 provided in the bin tray unit 7 is provided at a position facing the inlet side end 601 of each bin tray 6. As shown in FIG. 2 and FIG. 3, the distribution unit transport means 12 includes a pair of distribution unit vertical frames 26, a distribution unit horizontal frame 27 that interconnects them, and a pair of distribution unit vertical frames 26 near the upper and lower ends. Upper and lower rollers 28 and 29 pivoted through bearing members (an example shown by a broken line as B in FIG. 2), and a plurality of (here, four) endless belts 30 wound around the rollers 28 and 29 The indexer 31 that deflects the paper that is disposed inside the rotation area of the endless belt 30 and is conveyed in the vertical direction toward the upper surface side of the predetermined bin tray 6, and the endless belt 30 through the space e (see FIG. 1). A pair of upper and lower suction fans 32 disposed opposite to each other, and an outer wall member 33 that supports the suction fan 32 and separates the space e and the endless belt 30 side from the outside.
[0024]
As shown in FIG. 3, each endless belt 30 is made of synthetic resin, rubber, or the like, and has a large number of through holes h formed on the surface thereof. During driving of the suction fan 32, air is sucked from the through holes h and is being transported. Hold the paper in Each of the upper roller 28 as a driven roller and the lower roller 29 as a driving roller is formed with four enlarged diameter portions r, and the endless belt 30 is wound around the enlarged diameter portions r facing each other vertically. Yes. A gap c is secured between the endless belts 30 adjacent to each other, and a deflection protrusion 34 of the indexer 31 is loosely fitted in each gap c. As shown in FIG. 2, a drive gear 35 is integrally attached to one end of the lower roller 29, and the drive gear 35 is connected to a drive motor 37 via a reduction gear train 36.
[0025]
As shown in FIG. 3, the indexer 31 for deflecting the sheet conveyed in the vertical direction by the endless belt 30 toward the upper surface side of the predetermined bin tray 6 is provided on the upper and lower sides provided near the rollers 28 and 29. The indexer horizontal frames 38 and 39, the indexer horizontal frames 38 and 39 are connected to each other, the pair of indexer vertical frames 40 and 41 arranged in parallel in the vicinity of the pair of distributing unit vertical frames 26, the indexer vertical frames 40, A pair of longitudinal feed shafts 42 and 43 that are juxtaposed along the indexer horizontal frames 38 and 39 and are pivotally supported by the indexer lateral frames 38 and 39, and are integrally coupled to a portion protruding from the indexer lateral frame 38 at the upper ends of the vertical feed shafts 42 and 43. Driven gears 44, 45, drive gears 48 for driving the gears 44, 45 through intermediate gears 46, 47, indexer motors 49 for driving the drive gears 48, Both ends of the shafts 42 and 43 are screwed together, and both end portions protrude from a gap c between the endless belts 30 adjacent to each other, and a movable frame 50 that is loosely fitted into the inner grooves of the indexer vertical frames 40 and 41. This is mainly composed of the deflecting protrusion 34 and the like.
[0026]
The indexer 31 holds the deflecting protrusion 34 at a reference position for sorting sheets in the lowermost bin tray 6 when not operating. From this state, when a signal for sorting paper is input to the second bin tray 6 from the bottom in the sort mode, the indexer motor 49 is driven by an amount corresponding to one pitch, and the deflecting protrusion 34 is moved upward and conveyed. The coming paper is discharged to the second bin tray 6 from the bottom by the deflecting protrusion 34. Thereafter, the sorting process of sequentially distributing and storing the sequentially conveyed sheets in this way to the designated bin tray 6 is performed, and after the designated number of sorting operations, the indexer motor 49 is reversed, and the deflecting protrusion 34 is returned to the reference position to complete the operation.
[0027]
Note that the upper and lower gaps between the pair of distributor vertical frames 26 and the pair of indexer vertical frames 40 and 41 inside thereof and the rotation range of the plurality of endless belts 30 are covered with a partition wall (not shown). Thus, the passage of the air sucked by the suction fan 32 is restricted, and the suction force received by the paper in the rotation region of the endless belt 30 is configured to act reliably.
[0028]
Inside the frame 5 and immediately below the bin tray unit 7 and the distribution unit conveyance unit 12, the sheet is conveyed toward the distribution unit conveyance unit 12 or the paper discharge tray 9 disposed below the frame 5. An intake section conveying means 11 is disposed. The intake section transport means 11 takes in and transports the paper from the paper discharge section 3 at the paper discharge section facing position A, and includes an inflow side transport path switching section 51 and an outflow side transport section 52 as paper transport means. ing.
[0029]
As shown in FIGS. 1, 2, and 4, the inflow-side transport path switching unit 51 is swingable in the vertical direction on the connecting substrate 10 integrally coupled to the vertical frame 22 and the horizontal frame 23 of the frame 5. It is supported. The inflow side conveyance path switching unit 51 includes a flat box-like base 511 supported inside the pair of connection substrates 10, a driving pulley 53 and a driven pulley 54 pivotally supported inside the base 511, each pulley 53, A plurality of (here, three) endless belts 55 that are wound around 54 and exposed on the upper surface of the base 511, and a suction fan 59 that is attached to the lower wall of the base 511 and sucks the paper onto the endless belt 55. Etc. are mainly composed.
[0030]
The driving pulley 53 is driven to rotate by receiving a rotational driving force from a driving means (not shown) by a driving force transmission mechanism such as a chain and a sprocket (not shown). The endless belt 55 is made of synthetic resin or rubber, and has a large number of through holes h. The endless belt 55 sucks and holds the sheet being conveyed on the upper surface when the suction fan 59 is operated.
[0031]
On the left and right outer walls of the inflow side end of the base 511, a pivot pin 56 is provided so as to extend in the horizontal direction along the same center line as the rotation center of the drive pulley 53. When the pivot pin 56 is pivotally supported by the connecting board 10, the inflow side end of the endless belt 55 and the base 511 is always held at the discharge portion facing position A, and the outflow side end of the base 511 is It can swing in the vertical direction.
[0032]
As shown in FIG. 4, the sheet conveyed by the endless belt 55 is seated on both side corners of the outflow side (downstream in the sheet conveyance direction) of the upper plate 511 a constituting the base 511. Each of the seating members 25 made of a plate material is disposed. The seating member 25 is rotatably attached to the upper plate 511a by a hinge (not shown).
[0033]
As shown in FIG. 5, an L-shaped bracket 119 is fixed to the lower surface of the base 511, and a solenoid 57 as a push-up means is attached to the bracket 119. The plunger 57a of the solenoid 57 has a substantially L-shaped arm member 132 having a central portion fixed to one end of a D-shaped support shaft 120 rotatably supported on both side surfaces of the base 511. One end is attached. A similar arm member 132 is also fixed to the other end of the support shaft 120, and each arm member 132 is disposed at a position where the other end can contact the seating member 25.
[0034]
Further, a stopper 146 for restricting the rotation of the arm member 132 is attached to the bracket 119, and a compression spring 153 is attached to the plunger 57a. With this configuration, when the solenoid 57 is turned off, the plunger 57a is biased by the compression spring 153. The seating member 25 is positioned at the first position shown in FIG. 5 which is substantially flush with the upper plate 511a when one end of the arm member 132 comes into contact with the stopper 146. When the solenoid 57 is turned on, the plunger 57a is As the arm member 132 is sucked and rotated clockwise in FIG. 5 about the support shaft 120 and pushed up to the other end of the arm member 132, the seating member 25 is positioned at the third position shown in FIG. Is done. The operation of the solenoid 57 is controlled by a control means 166 (see FIG. 1) provided inside the paper discharge storage device 1.
[0035]
The switching drive means 13 shown in FIG. 4 is connected to the lower wall surface of the outflow side end of the base 511. The switching drive unit 13 switches the support position of the inflow side conveyance path switching unit 51 and selectively swings the inflow side conveyance path switching unit 51 around the pivot pin 56. In this case, the switching drive means 13 holds the inflow-side transport path switching unit 51 at the sort position P1, which is the first state shown by the solid line in FIG. A non-sorting conveying path is formed by forming a path and holding the inflow-side conveying path switching unit 51 at the non-sorting position P2, which is the second state indicated by the two-dot chain line in FIG. Form.
[0036]
The switching drive means 13 is formed on a bracket 58 projecting from the lower wall surface of the base 511, a pair of pinions 60 pivotally supported by the bracket 58 via a pivot shaft 62, and the left and right connecting boards 10, and the respective pinions mesh with each other. It mainly comprises a rack 61, a worm wheel 63 integrally coupled to the central portion of the pivot 62, a worm 64 meshing with the worm wheel 63, a motor 65 (see FIG. 2) for driving the worm 64, and the like. The pair of racks 61 are formed in a fan shape with the center line of the pivot pin 56 as the center.
[0037]
As for the swing of the inflow side conveyance path switching unit 51 to the sorting position P1 and the non-sorting position P2, a signal sent from the stencil printing apparatus 2 is inputted to the control means 166, and a signal from the control means 166 is inputted to the motor 65. Is done. The paper discharge storage device 1 has a first position sensor 66 that issues a motor stop command when the inflow-side conveyance path switching unit 51 reaches the sort position P1, and a motor stop command when it reaches the non-sort position P2. A second position sensor 67 that emits light is provided. The motor 65 is configured to rotate the pinion 60 forward and backward according to the motor stop command of the sensors 66 and 67 and selectively switch and hold the inflow side conveyance path switching unit 51 between the sort position P1 and the non-sort position P2. The
[0038]
As shown in FIG. 7, the inflow-side transport path switching is performed so that each of the connecting substrates 10 can be brought into contact with each seating member 25 at a portion corresponding to the outflow-side end of the inflow-side transport path switching section 51. Two abutment pins 154 as projecting members projecting into the swing path of the portion 51 are implanted. The contact pin 154 contacts the seating member 25 when the inflow side transport path switching unit 51 is held at the non-sort position P2, and when the solenoid 57 is off, the seating member 25 is brought into contact with the first position and the third position. It is positioned at the second position shown in FIG.
[0039]
As shown in FIGS. 1, 2, and 8, the outflow side conveyance unit 52 includes a box-shaped base 68, a pair of pulleys 69 and 70 that are pivotally supported inside the base 68, and is wound around each pulley. These are mainly composed of an endless belt 71 that is partially exposed on the upper surface of the base 68, a suction fan 72 that is attached to the lower wall surface of the base 68 and sucks the paper onto the endless belt 71, and the like. The pulleys 69 and 70 are driven by a driving mechanism (not shown) such as a chain, sprocket, or motor. Further, the base 68 is fixed substantially horizontally to the pair of vertical frames 24, and the outflow side transport unit 52 causes the sheet from the inflow side transport path switching unit 51 at the sort position to be fed by the deflection piece 68a on the outflow end side. After being deflected upward, it is conveyed to the lower end of the distribution unit conveying means 12. The endless belt 71 is also made of a member such as synthetic resin or rubber, has a large number of through holes h, and sucks and holds a sheet that is in the middle of conveyance when the suction fan 72 is driven.
[0040]
1, 2, and 8 show the outflow side conveyance unit 52 directly fixed to the pair of vertical frames 24, the vertical frame 24 on the front side F (see FIG. 2) is excluded, etc. The front side F of the outflow side transport unit 52 is opened by adjusting the layout on the frame body 5 side, and the outflow side transport unit 52 is supported so that it can be pulled out to the frame body 5 side via a rail member (not shown) extending to the front side F. It is good also as a structure to be made. In this case, when a jam occurs in the outflow side transport unit 52 or the distribution unit transport means 12, the outflow side transport unit 52 can be pulled out to the front side F to facilitate the jam processing.
[0041]
As shown in FIGS. 9 to 11, the paper discharge tray 9 is supported by a vertical support frame 77 disposed under the frame body 5 via an elevating mechanism 8. The paper discharge tray 9 includes a paper discharge tray main body 73 supported by the lifting mechanism 8 via a lift frame 79, an end fence 74 standing on the downstream side in the paper transport direction on the paper discharge tray main body 73, and a paper discharge tray main body. 73, side fences 75, 76, etc., are provided upright on both sides. Cutout portions 78a and 78b are formed at the central portion of the upstream end portion of the paper discharge tray 73 in the sheet conveying direction and the front corner portion of the downstream end portion in the same direction.
[0042]
Since the side fences 75 and 76 have the same configuration, the side fence 75 on the near side will be mainly described. The side fence 75 is provided so as to be movable up and down in the direction indicated by the white arrow in FIG. 11, and is slidably supported on a rail 82 attached to the paper discharge tray body 73 via a slider 81. The rail 82 has a gap on both sides thereof, and both ends thereof are integrally coupled to the paper discharge tray body 73. The slider 81 includes a sliding body 81a that is slidably fitted to the rail 82, an inverted U-shaped pivot member 81b that is disposed so as to sandwich both sides of the sliding body 81a, and rising portions at both ends of the pivot member 81b. The pivot 83 that pivotally supports the prismatic bearing 80 formed at the lower center portion of the side fence 75 and elastically presses the bearing 80 against the upper surface of the rail 82 via the pivot 81b. Two compression springs 84 are provided. With this configuration, the side fence 75 can take an upright position indicated by a solid line in FIG. 11 and an outward position indicated by a two-dot chain line. The side fences 75 and 76 have a well-known configuration (not shown) that moves in conjunction with each other.
[0043]
As shown in FIG. 9, the lifting mechanism 8 that lifts and lowers the discharge tray main body 73 mainly includes a motor 85, a worm 86, a worm wheel 87, a pinion 88, upper and lower limit switches 89 and 90, and the like.
[0044]
The motor 85 is attached to the vertical support frame 77, and a worm 86 is attached to the tip of the output shaft. A worm wheel 87 meshes with the worm 86, and the worm wheel 87 is pivotally attached to the vertical support frame 77 via a shaft 91. The worm wheel 87 is integrally coupled with a pinion 88 pivotally supported by a shaft 91, and the pinion 88 is provided so as to mesh with a rack 92 formed on the lifting frame 79. Upper and lower limit switches 89 and 90 are attached to the vertical support frame 77 and output upper and lower limit position signals of the paper discharge tray main body 73. The driving of the motor 85 is controlled by the control means 166.
[0045]
As described above, since the paper discharge tray 9 is disposed below the frame body 5 of the paper discharge storage device 1, a degree of freedom in layout can be secured. In particular, if the rack 92 is formed with a sufficient length, the paper discharge is performed. By sufficiently securing the vertical movement area of the tray body 73, the capacity can be set large. In this case, the end fence 74 and the side fences 75 and 76 are also set to a sufficient height.
[0046]
Hereinafter, the operation of the paper discharge storage device 1 in this embodiment will be described.
When an unillustrated master making start key on an operation panel (not shown) provided in the stencil printing apparatus 2 is pressed by an operator, a used master (not shown) wound on the plate cylinder 16 is peeled off, and then the stencil printing apparatus The perforating plate making is performed on the master (not shown) by the plate making means 2 (not shown). The master made by plate making is conveyed to the plate cylinder 16 by a conveying means (not shown), and its leading end is locked by a master locking means (not shown) on the outer peripheral surface of the plate cylinder 16.
[0047]
At the same time that a master (not shown) is wound around the outer peripheral surface of the plate cylinder 16, the motor 85 is driven by a command from the control means 166 to move the paper discharge tray 9 to the upper limit position indicated by reference numeral u1 in FIG. When the elevating frame 79 comes into contact with the upper limit switch 89 and operates it, the motor 85 is stopped by the command from the control means 166 and the paper discharge tray 9 is positioned at the upper limit position u1.
[0048]
Further, the control means 166 determines whether or not the inflow side transport path switching unit 51 is at the non-sort position P2 based on the output of the second position sensor 67, and when the inflow side transport path switching unit 51 is not at the non-sort position P2. Rotates the motor 65 of the switching drive means 13 to move the inflow side conveyance path switching unit 51 to the non-sort position P2 facing the paper discharge tray 9. As the inflow side conveyance path switching unit 51 moves to the non-sort position P2, each seating member 25 and each contact pin 154 come into contact with each other, and each seating member 25 is positioned at the second position shown in FIG. .
[0049]
Next, the paper feeding device 14 is activated, and a sheet of paper is fed between the plate cylinder 16 and the press roller 15 that are rotationally driven at a predetermined peripheral speed that is lower than the printing speed. The paper is pressed against the plate cylinder 16 by the press roller 15 to transfer the ink, and then peeled off from the outer peripheral surface of the plate cylinder 16 by the peeling claw 17 and sent to the paper discharge unit 3. The sheet conveyed while being sucked onto the endless belt 19 by the suction fan 20 is discharged from the discharge port a to the outside of the apparatus, and is placed on the discharge tray 9 via the inflow side transfer path switching unit 51 and is printed on the plate. The attaching process is completed.
[0050]
If the image confirmation result in the printing process is good, the printing process is started. First, the non-sort mode in which the sheets are discharged onto the discharge tray 9 at once without being sorted will be described.
When the sort mode for sorting on the operation panel (not shown) is not selected, the control means (not shown) of the stencil printing apparatus 2 is in the non-sort mode when the operator presses a print start key (not shown) on the operation panel. And a signal indicating the non-sort mode is output to the control means 166. The control means 166 that has received the signal indicating that it is in the non-sort mode determines whether or not the inflow-side transport path switching unit 51 is in the non-sort position P2 from the output of the second position sensor 67, and the inflow-side transport path switching unit 51. Is not in the non-sort position P2, the motor 65 of the switching drive means 13 is driven to rotate, and the inflow side transport path switching section 51 is moved to the non-sort position P2 facing the paper discharge tray 9. Thereby, each seating member 25 is positioned at the second position.
[0051]
Further, the control unit 166 operates the motor 85 to position the paper discharge tray 9 at the upper limit position u1, and when the operator selects “thick paper” with a paper selection key (not shown) on the operation panel, the control unit 166 turns on the solenoid 57. The solenoid 57 is turned on when “thin paper” is selected. Thus, each seating member 25 is positioned at the second position when “thick paper” is selected, and at the third position shown in FIG. 6 when “thin paper” is selected.
[0052]
When the inflow side conveyance path switching unit 51 is positioned at the non-sort position P2, the plate cylinder 16 and the roller 18 are driven to rotate, and at the same time, the driving pulley 53 is driven to rotate. When the plate cylinder 16, the roller 18, and the drive pulley 53 are driven to rotate, the paper feeding device 14 is operated in the same manner as in the plate making process, and between the plate cylinder 16 and the press roller 15 that are driven to rotate at high speed. A sheet of paper is fed to the front. The paper to which the ink has been transferred by being pressed against the plate cylinder 16 by the press roller 15 is peeled off from the outer peripheral surface of the plate cylinder 16 by the peeling claw 17 and then sent to the paper discharge unit 3 and out of the machine from the paper discharge port a. And is stacked on the discharge tray 9 via the inflow side transfer path switching unit 51.
[0053]
When the sheet moves to the inflow side conveyance path switching unit 51 through the discharge port a of the stencil printing apparatus 2, the sheet is conveyed from the endless belt 19 having a conveyance function to the endless belt 55. Even if the relative positional accuracy of the endless belt 19 and the endless belt 55 is somewhat low, the sheet is reliably conveyed and jamming is reliably prevented.
[0054]
Further, since the sheet is properly seated according to its type by the seating member 25, normal transport is performed when the sheets are sequentially discharged onto the sheet discharge tray 9, and a paper discharge jam occurs. Is prevented and stable loading is performed.
[0055]
At this time, the control means and control means 166 (not shown) of the stencil printing apparatus 2 also function as a discharge tray driving means in cooperation with the motor 85. That is, the control means and control means 166 (not shown) drive-controls the motor 85 so as to gradually lower the discharge tray main body 73 toward the lower limit position u2 (see FIG. 1) according to the sheet count. At this time, the height H (see FIG. 1) between the leading edge of the sheet discharged from the inflow side conveyance path switching unit 51 and the uppermost sheet stacked on the discharge tray main body 73 is set at a constant interval. Since the sheet can be stably stacked on the sheet discharge tray 9 by keeping the sheet, the sheet to be discharged comes into contact with the sheet stacked on the sheet discharge tray 9. Problems can be prevented. In the control of the motor 85, for example, it is appropriate to lower the discharge tray main body 73 by 1 to 2 mm every time about 10 sheets are printed. The interval of H varies depending on the size and type of printing paper, but is preferably about 30 to 60 mm.
[0056]
When taking out the paper stacked on the paper discharge tray 9, first, the side fence 75 on the front side is tilted to the front side as shown by the white arrow in FIGS. 10 and 11 so as not to interfere with the taking out operation. The sheet can be easily taken out by putting the right hand into the cutout portion 78a of the discharge tray main body 73 and the left hand into the cutout portion 78b and grasping the stacked paper with both hands and pulling it out to the front side. Further, even if a paper take-out operation is performed in the same manner as described above without tilting the front side fence 75, the side fence 75 is easily pushed down by the printing paper and falls down easily. Printing paper can be easily removed.
[0057]
Next, a sort mode in which the paper is sorted and discharged onto the plurality of bin trays 6 will be described.
When the sort mode for sorting on the operation panel (not shown) is selected, when the operator presses a print start key (not shown) on the operation panel, the control means (not shown) of the stencil printing apparatus 2 is in the sort mode. Determination is made and a signal indicating the sort mode is output to the control means 166. The control means 166 that has received a signal indicating that the mode is the sort mode determines from the output of the first position sensor 66 whether or not the inflow side transport path switching unit 51 is at the sort position P1, and the inflow side transport path switching unit 51 When not in the sort position, the motor 65 of the switching drive means 13 is driven to rotate, and the inflow side transport path switching unit 51 is moved to the sort position P1 facing the outflow side transport unit 52. At this time, the operation of the solenoid 57 is turned off, so that each of the lumbar members 25 is positioned at the first position.
[0058]
When the inflow side conveyance path switching unit 51 is positioned at the sort position P1, the plate cylinder 16 and the roller 18 are rotationally driven at high speed, and further, the drive pulley 53, the drive motor 37 of the distribution unit conveyance unit 12, and the outflow side conveyance unit 52. The drive mechanism (not shown) is activated, and the endless belts 55, 30, 71 start moving.
[0059]
As in the case of non-sorting, the sheet fed by the sheet feeding device 14 and pressed by the press roller 15 to the plate cylinder 16 to transfer the ink, and discharged from the sheet discharge unit 3 through the sheet discharge port a is the sorting position P1. Is conveyed by the inflow-side conveyance path switching unit 51 positioned at, and is conveyed to the distribution unit conveyance means 12 via the outflow-side conveyance unit 52. Thereafter, the sheet transported upward by the distribution unit transporting unit 12 is deflected and placed toward the upper side surface of the bin tray 6 by the deflecting protrusion 34 of the indexer 31.
[0060]
Thereafter, the indexer motor 49 operates in accordance with the number of sorting units set on the operation panel (not shown), and the indexer 31 is divided by one pitch from the reference position corresponding to the first bin tray 6 and the deflecting protrusion 34. The paper that is sequentially moved up and deflected is deflected and sorted and stacked on each bin tray 6.
[0061]
Even in this sort mode, the inflow end of the inflow side transport path switching unit 51 faces the paper discharge unit facing position A, and the paper moves from the paper discharge unit 3 to the inflow side transport path switching unit 51 side. Further, since the sheet is conveyed from the endless belt 19 to the endless belt 55, the sheet is reliably conveyed even if the relative positional accuracy between the endless belt 19 and the endless belt 55 is somewhat low. Occurrence is reliably prevented.
[0062]
Further, since the sheet is not seated by the seating member 25, the sheet is smoothly transferred from the inflow side transport path switching unit 51 to the outflow side transport unit 52, and the occurrence of paper discharge jam is prevented.
[0063]
In the above embodiment, the stencil printing apparatus is used as the image forming apparatus. However, an electrophotographic copying apparatus, a printer, or the like may be employed as the image forming apparatus. In this case, the same effect as described above can be obtained.
[0064]
【The invention's effect】
According to the present invention, the seating member provided in the paper transporting unit can take three positions, so that the paper can be transported and stacked satisfactorily both during sorting and during non-sorting, particularly in the case of non-sorting. Therefore, it is possible to carry out optimal conveyance and stacking according to the type of paper. Further, by using a solenoid as a push-up means for pushing up the seating member, the configuration can be simplified and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a schematic front sectional view of a paper discharge storage device and a stencil printing device adopting an embodiment of the present invention.
FIG. 2 is a schematic plan cross-sectional view illustrating an intake section transport unit of a paper discharge storage device used in an embodiment of the present invention.
FIG. 3 is a schematic cross-sectional side view illustrating a distribution unit transport unit of a paper discharge storage device used in an embodiment of the present invention.
FIG. 4 is a partial perspective view illustrating an inflow-side conveyance path switching unit of a paper discharge storage device used in an embodiment of the present invention.
FIG. 5 is a diagram illustrating a first position of a seating member used in one embodiment of the present invention.
FIG. 6 is a view for explaining a third position of the backrest member used in one embodiment of the present invention.
FIG. 7 is a view for explaining a second position of the backrest member used in one embodiment of the present invention.
FIG. 8 is a perspective view illustrating an outflow side transport unit of the paper discharge storage device used in an embodiment of the present invention.
FIG. 9 is a front view of an essential part for explaining a paper discharge tray and a lifting / lowering means of a paper discharge storage device used in an embodiment of the present invention.
FIG. 10 is a schematic plan view of a paper discharge tray used in an embodiment of the present invention.
FIG. 11 is a partial side view of a paper discharge tray used in an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Discharge storage apparatus 2 Image forming apparatus (stencil printing apparatus)
5 Body (frame)
7 Bin tray unit 9 Paper discharge tray 25 Seating member 51 Paper transport means (inflow side transport path switching section)
57 Push-up means (solenoid)
154 Protruding member (contact pin)
166 Control means P1 first state (sort position)
P2 Second position (non-sort position)

Claims (1)

A body that will be connected to the image forming apparatus, the bin tray unit for stacking and sorting the sheets discharged from the image forming apparatus is provided in the main body, the sheets discharged from the image forming apparatus is provided in the body A paper discharge tray that stacks the paper in a batch, a first state in which the paper is transported toward the bin tray unit, and a second state in which the paper is transported toward the paper discharge tray are swingably provided. In the paper discharge storage device provided with the paper transporting means,
The sheet conveying means has a lumbar member provided so as to be able to project on both sides of the downstream end portion in the sheet conveyance direction, and a push-up means for pushing up the lumbar member, and the main body can come into contact with the lumbar member. A projecting member projecting into the swing path of the paper transporting means, and when the sorting operation is selected, the paper transporting means is placed in the first position and the seating member is placed in the paper transporting path. When the non-sorting operation in which thick paper is used as the paper is selected, the paper conveying means is placed in the second position when the non-sorting operation is performed. When the non-sorting operation in which thin paper is used as the paper is selected, the seating member is positioned at a second position raised from the transport path by contacting the member. state Placed in to having a control means for positioning the third position further raised than the second position to the waist with member by actuating said push-up means is brought into contact with the waist with member to said protruding member A discharge storage device characterized by the above.

Images