JPH09290955A - Sheet treatment device and image forming device provided therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the adaptability of a sheet or a sheet bundle on a tray when a cut sheet for sorting is attached to the sheet or the sheet bundle which is loaded on the tray. SOLUTION: A cut sheet 602 to be carried from a sheet feed part 101 is attached to a sheet or a sheet bundle to be carried from a carrying roller 102 by a pressing roller, and the sheet or the sheet bundle is discharged on a tray by a discharging roller. The surface to which the cut sheet is attached is set so as to be located on the lower surface side on the tray in the loaded condition. The sheet or the sheet bundle to be loaded on the cut sheet attached to the loaded sheet can be loaded with excellent adaptability without being hooked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet processing apparatus, and more specifically, to sheets sequentially discharged from an image forming apparatus such as a copying machine, a laser beam printer, a fax printer, etc. after image formation in a sheet tray. The present invention relates to a sheet post-processing device.

[0002]

2. Description of the Related Art Conventionally, in a sheet processing apparatus installed in a discharge section of an image forming apparatus, for example, a shift tray or the like, it is generally known that a sheet bundle is shifted and stacked for each section to identify each section. (See FIGS. 41 and 42, FIG. 42)
Is a view A in FIG. 41).

In this shift tray structure, a sheet tray 120 (hereinafter referred to as a tray) for storing sheets discharged by the sheet discharging means 121 after image formation is arranged in a direction (arrow C) orthogonal to the sheet discharging direction (arrow B). The drive unit (not shown) shifts each sheet bundle to enable identification of each sheet bundle as shown in FIG. 42. Here, P1 to P4 are sheet bundles.

[0004]

However, when one image forming apparatus can output each output of fax, copy, printer, etc., when one tray is shifted and the bundle is identified, the following occurs. Problem occurs.

For example, when the image forming apparatus is used as a printer by a plurality of users and each output bundle is offset on one tray as described above, one user selects one of the bundles stacked on the tray. When one bundle is removed (bundle P2 in FIG. 42), the result is as shown in FIG. 44 (FIG. 44 is a view as seen from A in FIG. 43), and the sheet bundle P3 and the sheet bundle P
It cannot be distinguished from 1. Further, when the sheet bundle P6 is pulled out, part of the upper and lower bundles P'may be pulled out together, which makes it more difficult to distinguish between the sheet bundles.

The same problem occurs when a plurality of users share a single tray as a fax machine, and even more when used as a fax machine, a copy machine, or a printer.

According to the present invention, when a second sheet as a partitioning sheet is attached to a first sheet or a sheet bundle and is discharged onto a stacking means, a sheet or a sheet bundle already stacked on the stacking means The second stacked sheet or the second sheet of the sheet bundle is prevented from being caught on the second sheet, the next stacked sheet or the sheet bundle is stably stacked, and the consistency on the stacking means is improved. An object is to provide a sheet processing apparatus.

[0008]

According to a first aspect of the present invention, there is provided a first feeding section for feeding a first sheet, and a first sheet conveyed from the first feeding section, or The first sheet conveying unit that conveys the sheet bundle, the second feeding unit that feeds the second sheet, and the second sheet that is conveyed from the second feeding unit are the first sheets. A sheet adhering section for adhering to the first sheet or sheet bundle of the conveying section, an ejecting unit for ejecting the first sheet or sheet bundle to which the second sheet is adhered, and the ejected first sheet or sheet bundle. In a sheet processing apparatus having a stacking unit for stacking a sheet or a sheet bundle, the attachment surface of the second sheet with respect to the first sheet or the sheet bundle is the first sheet in the sheet stacking state on the stacking unit. The sheet or the sheet bundle is on the lower surface side.

According to a second aspect of the present invention, there is provided a first feeding section for feeding the first sheet, and a first sheet or a sheet bundle conveyed from the first feeding section. A first sheet conveying section, a second sheet feeding section for feeding a second sheet, and a second sheet feeding section
A sheet attaching section for attaching the second sheet conveyed from the sheet feeding section to the first sheet or the sheet bundle of the first sheet conveying section, and the first sheet having the second sheet attached. In a sheet processing apparatus having a discharging unit for discharging a sheet or a sheet bundle and a stacking unit for stacking the discharged first sheet or a sheet bundle, a second sheet for the first sheet or the sheet bundle is provided. In the sheet stacking state on the stacking unit, the pasting position is upstream of a position at which the front edge of the next stacked sheet or the sheet bundle in the discharge direction abuts.

According to a third aspect of the present invention, there is provided a first feeding section for feeding the first sheet and a first sheet or a sheet bundle conveyed from the first feeding section. A first sheet conveying section, a second sheet feeding section for feeding a second sheet, and a second sheet feeding section
A sheet attaching section for attaching the second sheet conveyed from the sheet feeding section to the first sheet or the sheet bundle of the first sheet conveying section, and the first sheet having the second sheet attached. A stacking unit for stacking the discharged first sheet or sheet bundle, and a stacking unit for stacking the discharged first sheet or sheet bundle. In the sheet processing device, in which the front end edge of the next stack of sheets or the stack of sheets in the transport direction comes into contact with the stacked sheets and then moves in the opposite direction to the stacking direction to stack the stacked sheets,
The attachment position of the second sheet with respect to the first sheet or the sheet bundle is higher than the contact position of the front edge of the sheet or the sheet bundle of the next stack with the already stacked sheet in the sheet stacking state on the stacking unit. On the upstream side, and
A sheet processing apparatus, which is located downstream of a contact position of a trailing edge.

According to a fourth aspect of the present invention, there is provided a first feeding section for feeding the first sheet, and a first sheet or a sheet bundle conveyed from the first feeding section. A first sheet conveying section, a second sheet feeding section for feeding a second sheet, and a second sheet feeding section
A sheet attaching section for attaching the second sheet conveyed from the sheet feeding section to the first sheet or the sheet bundle of the first sheet conveying section, and the first sheet having the second sheet attached. A stacking unit for stacking the discharged first sheet or sheet bundle, and a stacking unit for stacking the discharged first sheet or sheet bundle. In the sheet processing device, in which the trailing edge of the next stacked sheet or sheet bundle in the transport direction comes into contact with the stacked sheet and then moves in the opposite direction to the stacking direction to stack the stacked sheets,
The attachment position of the second sheet to the first sheet or the sheet bundle is opposite after the contact of the trailing edge of the sheet or the sheet bundle of the next stack to the already stacked sheet in the sheet stacking state on the stacking unit. It is characterized in that it is on the upstream side of the position where the movement starts in the direction.

The present invention according to claim 5 is characterized in that it has a printing means for printing on the second sheet.

[Operation] Based on the above configuration, the first sheet or the sheet bundle is conveyed from the first feeding section to the first sheet conveying section, and the first sheet conveying section further includes the second sheet. The second sheet is conveyed from the feeding section and is attached to the first sheet or the sheet bundle by the sheet attaching section,
It is discharged onto the loading means by the discharging means.

The second sheet is adhered to the first sheet or sheet bundle on the lower surface side of the first sheet or sheet bundle in the state where the sheets are stacked on the stacking means. When a stack of sheets is loaded,
The first sheet already loaded or the second sheet of the sheet bundle can be stably loaded without being caught.

Further, when the first sheet or sheet bundle is discharged onto the stacking means, the front end edge of the first sheet or sheet bundle in the discharge direction is upstream of the position where the front edge contacts the already stacked sheet or sheet bundle. Since the second sheet is positioned on the side, even when the second sheet is on the upper surface of the first sheet or the sheet bundle on the stacking unit, the first sheet or the sheet bundle has already been stacked. The sheet or the second sheet of the sheet bundle can be stably stacked without being caught.

Further, when the first sheet or sheet bundle is stacked on the stacking means, after the front edge of the next stacked sheet or sheet bundle in the transport direction comes into contact with the already stacked sheet, the direction opposite to the discharge direction. When moving and stacking the sheet on the first sheet or the stack of sheets, the position where the second sheet is attached is
In the sheet stacking state on the stacking unit, the upstream side of the contact position of the front edge of the next stack of sheets or a stack of sheets with respect to the already stacked sheet and the downstream side of the contact position of the rear edge. By doing so, even if the second sheet is on the upper surface of the first sheet or sheet bundle on the stacking means, the next stacked sheet or sheet bundle becomes the second sheet of the already stacked sheets or sheet bundle. It can be loaded stably without getting caught.

Further, when the first sheet or sheet bundle is stacked on the stacking means, after the trailing edge of the next stacked sheet or sheet bundle in the transport direction comes into contact with the already stacked sheet, the sheet is opposite to the discharge direction. In the case of moving in the direction and stacking, the attachment position of the second sheet with respect to the first sheet or the sheet bundle is
In the sheet stacking state on the stacking means, the second stacking sheet is set on the upstream side of the position where the backward stacking sheet or the rear end edge of the sheet bundle starts to move in the opposite direction to the already stacked sheet, so that the second sheet Even when the sheet is on the upper surface of the first sheet or the sheet bundle on the stacking unit, the next stacked sheet or the sheet bundle is the second of the already stacked sheets or the sheet bundle.
It can be stably loaded without getting caught in the sheet.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION

<Embodiment 1> Hereinafter, as Embodiment 1 of the present invention,
A case where the sheet processing apparatus of the image forming apparatus is applied will be described.

FIG. 1 is an overall view of a combination of an image forming apparatus main body 300, a circulation type original processing apparatus 200 and a sheet processing apparatus 100.

The image forming apparatus 3 will be briefly described below.
Reference numeral 00 denotes a cassette 307 that stores sheets (first sheets) P, a sheet feeding unit 301 that feeds the sheets in the cassette one by one, a transfer unit 303 that transfers toner to the conveyed sheet P, and a transfer unit. Developing unit 30 for developing toner to
2. From the optical unit 304 that reads the image on the platen 308 and exposes it on the transfer unit, the fixing unit 305 that fixes the toner transferred onto the sheet onto the sheet, the discharge unit 306 that discharges the fixed sheet to the outside of the machine, and the like. Has become.

The circulation type original processing apparatus 200 includes a tray 201 for setting a set of originals, a paper feed roller 202 for feeding the originals one by one from the bottom sheet of the originals, a separating section 203, and a platen 308 for the separated originals. Transport roller 20 for transporting to
5, transport belt 206 for transporting documents on the platen, belt rollers 207, 208 for driving the transport belt, transport rollers 205, 209 for loading the documents transported by the platen after reading on the tray again, and discharge rollers It consists of 204.

The bundle of documents stacked on the tray is fed and discharged one by one, and the bundle of documents stacked on the tray is again fed again.
Feed and eject paper. This is repeated for a desired number of cycles, and an output sheet corresponding to the cycle is discharged, whereby a desired number of output bundles can be obtained.

The sheet processing apparatus 100 receives a sheet sent from a discharge roller (discharge means) 306 of the image forming apparatus and conveys the sheet (first feeding section) 10.
2, a transport roller (first sheet transport unit) 103, a discharge roller (discharge unit) 121 that discharges and stacks sheets on a discharge tray (stacking unit) 120, and the like. According to the number of stacked sheets, the drive unit (not shown) can move up and down in the arrow direction.

Reference numeral 101 denotes a continuous sheet feeding section (second feeding section) which is a feature of the present invention, and will be described in detail below.

FIG. 2 is a front sectional view of the sheet feeding unit 101, FIG. 3 is a rear driving detail view, FIG. 4 is a view seen from A of FIG. 2, and FIG.
Is a view from B and FIG. 6 is a drawing on the right side.

A tape-shaped sheet (second sheet) 602 is stored in the continuous sheet cartridge 114, and is integrated with the case to the apparatus so that the user can easily replenish the sheet 602. It is arranged detachably.

A cartridge set detection sensor S7 for detecting the presence / absence of the cartridge 114 and the presence / absence of the sheet 602 in the cartridge 114 is arranged at the cartridge facing portion. In addition, the cartridge 114
A sheet feeding roller 113 for feeding a sheet in cooperation with the cartridge 114 is disposed on the downstream side of the cartridge, and an elastic member (not shown) or the like is used to provide a feeding force in the cartridge set state. Biased to the side.

After the leading edge of the conveyed continuous sheet 602 is detected by the first registration sensor S6, the printing device 11
1, and the cutter of the cutter unit 110, which is conveyed to the cutter unit 110 after passing through the gap roller 112 for ensuring the gap between the sheet and the printing apparatus, is a rotary intermittent cutter, and can convey the sheet at a predetermined angle. On the other hand, the blade is not formed so as not to get in the way, and when the sheet is cut, the leading end of the sheet is conveyed by the transport roller 109.
After reaching the second registration sensor S5 after being conveyed by a predetermined amount, the sheet is stopped and the cutter is rotated to cut the continuous sheet.

The printer 111 will be described in more detail.

The printing apparatus according to the present embodiment employs a valve jet method that has already been proposed. In the main scanning direction, the printing motor M5 is used as a drive source and drive transmission units 119a, 119b, and 119c are used. Shaft 11
The printing device 115 is controlled by moving the printing table 115 supported by the printer 6 in the direction of the arrow (FIG. 6).

In the sub-scanning direction of the printing apparatus 111, the feeding roller 113, the gap roller 112, and the transfer motors M4 as driving sources are used as the transmission units 120a, 120b, 120c ,.
The sheet feed amount is controlled by rotating each roller via 120d and the clutch CL1.

The printing device may be a heat-sensitive printing device when the continuous sheet is a heat-sensitive sheet, or a pressure-sensitive printing device when the continuous sheet is a pressure-sensitive sheet, or a continuous sheet. Even if it is a plain paper and is a dot type printing apparatus, the same result can be obtained without any trouble in the above-mentioned configuration. That is, the printing device 111 itself may be of any type.

The printing device 111 is arranged immediately before the cutter unit 110. This is because it is essential for stable printing to restrain the sheet as much as possible during printing, but when printing after cutting, it becomes difficult to restrain because the sheet length becomes short, or the sheet is restrained. The reason for this is that the sheet length after cutting becomes long.

Regarding the printing surface, in order to improve the visibility for the user, the upper surface side is the printing surface when the tray is ejected. In this embodiment, the right side of the sheet is the printing surface in FIG. It is arranged to be. Regarding the print area, in the present embodiment, the cut sheet is attached to the transfer paper (sheet P) from the back surface (the left surface of the sheet in FIG. 1) (details will be described later). Therefore, as shown in FIG. 7, the sheet P is shaded by the sheet (l ₁
It is controlled by a control unit (not shown) so as to print outside the area of + Δl), that is, the area of l ₂ .

With respect to the longitudinal direction, in the above-mentioned structure, printing can be performed to an arbitrary length by controlling the sheet feeding amount in the sub-scanning direction. Further, in that case, it is possible to prevent the cutting position from entering the printing area by adjusting the conveyance amount after the sensor S5 is turned on at the time of sheet cutting described above by the control unit (control means) 90. (See step 3 in FIG. 11).

Here, as a supplement to the continuous sheet in the cartridge, an adhesive layer is applied to the entire inner circumference of the sheet on the entire circumference of the area of width l ₁ . In this adhesive layer, the capsule is crushed when pressure is applied and the adhesive in the capsule oozes out,
Generates adhesive force.

In consideration of such a point, the present embodiment is configured so that all the rollers in the continuous sheet feeding section do not sandwich the adhesive layer.

Further, in the case of the main body of the apparatus for carrying the paper on the basis of the center, the sheet feeding unit 101 is constructed so that it can move in the direction orthogonal to the carrying direction because the position of the paper end face differs depending on the sheet size. There is. For details, using the moving motor M6 as a drive source, the drive transmission units 118a, 118b, 1
The plate 117 fixed to the frame of the feeding portion is moved by engaging with the belt 118a via 18c, thereby moving the plate in the orthogonal direction. Also, the plate 117
The detection sensor S8 detects the end surface of the flag of the plate 117 by utilizing the above, and determines the reference position, and drives a predetermined amount from there to support various sheet sizes.

Next, details of the sheet processing apparatus will be described.

2 and 3, a transport path I formed by a fixed guide and a sensor S4 for detecting the leading edge of the sheet are arranged downstream of the transport roller 102.
A transport path II formed by the swing guides 104 and 105 is connected downstream of the pass I, and the swing guide 10
Reference numeral 5 is swingable about a support shaft 105a and is biased by a biasing spring 107 in the arrow direction.

Further, the swing guide 104 is provided with a guide hole 104a for engaging the link pin 108a of the link 108 with the swing motor M1 as a drive source.
Is rotated to swing the guide 104 around the support shaft 104a.

Further, sensors S2 and S3 for detecting the swinging positions of the swinging guides 104 and 105 are provided so that they can be stopped at appropriate positions.

A pressure roller 106 is arranged on the swing guide 104, and is pressed against the guide 105 so that a cut sheet 602 described later is attached to the sheet P. Further, the swing guide 105 is arranged over the entire sheet width so as not to be a load when the sheet P is bent as shown in FIG.

When pulling the sheet, the roller 102
A one-way clutch (not shown) that can idle in the direction of the arrow in FIG. A roller 103 is arranged downstream of the transport path II, and a transport path III extending to the discharge roller 121 is provided downstream thereof, and the swing timing described above and a position to attach a cut sheet described below to the sheet P are controlled. In order to do so, a sensor S1 is arranged. The rollers 102, 103, 121 are driven by a carry motor M7 (not shown).

Next, an outline of the operation in each mode will be described with reference to a flowchart.

In the basic flow, first, the initial operation of each part is performed (FIG. 9A), and then the sheet conveying operation is performed.

In the present embodiment, there are three initial operations, that is, a swing guide portion, a lifting tray portion, and a sheet feeding portion (FIGS. 9B and 9C).

Explaining each part, the rocking guides 104 and 105 in the rocking guide part can move between a home position (hereinafter, H and P) and a rocking position, and sensors S2 and S3 for detecting the respective positions. Based on the signal, the swing motor M1 is rotated and controlled to perform the initialization operation (FIG. 9 (b)).

Further, regarding the sheet feeding unit, in order to perform printing and registration of cutting of continuous sheets, the forward and reverse rotation of the motor M4 and the ON / OFF of the clutch Cl ₁ are performed based on the signals of the sensors S6 and S7. The seat position is controlled and initialized (Fig. 9).
(C)). A description of the lifting tray section is omitted.

Next, regarding the sheet conveying mode, execution of the print mode is selected based on the presence or absence of print designation, and
Execution of the guide swing mode is selected based on whether the output bundle is the last sheet or not (FIG. 10D).

The print mode includes print motor, transport motor,
Main scanning and sub-scanning are performed by controlling the clutch (FIG. 10E). In the guide swing mode in which additional information is printed on a continuous sheet, when the pasting mode is executed, it is determined at the same time whether or not the swing is finished based on whether the sheet is the final sheet (FIG. 10 (f)).

In the pasting mode, each step is shown in FIG. 8. After the transfer sheet reaches the sensor S1, the control unit 90 further rotates the motor M7 to convey the sheet P by a predetermined amount, and then the motor M7 is turned off. To do.

Next, based on the sensor S3, the swing motor M7
Is turned on to swing the swing guides 104 and 105 (step 2), and at the same time, based on the sensor S5 and the print information,
Conveying continuous sheets, controlling stop, turning on the cutter motor,
After being turned off and cut (steps 3 and 4), the feed motor M7 for the sheet P and the feed motor M4 for the continuous sheet are turned on at the same time, so that the cut sheet is nipped together with the sheet P by the roller 106, and is placed on the back surface of the sheet P. Adhere (Step 5).

The conveyance motor is turned off based on the sensor S5.
Then, based on the sensor S1, the swing guide is set to H. The swing motor is turned on to return to P, and the motor is controlled based on the sensor S2 (step 6).

By repeating these operations, as shown in FIG.
As shown in FIG. 2 (a), cut sheets 602 for each number of copies
Is attached to the sheet P, each sheet bundle is sorted (partitioned), and at the same time, additional information can be printed on the sorted sheet 602.

Here, the control of the motor M7 will be supplementarily described.

After the sensor S1 is turned on, the motor M7 is turned on.
The stop position of the sheet P at the time of sticking can be made variable by arbitrarily setting the carry amount until FF by the control unit 90 (for example, by detecting the rotation speed of the motor M7). The position where the cut sheet 602 is attached to the sheet P can also be made variable.

As an example of printing, FIG. 12 (b) and FIG.
The configuration shown in 2 (c) is also possible in this embodiment.

FIG. 12 (b) shows an example of printing over a plurality of lines, and FIG. 12 (c) shows an embodiment in which the cut sheet width is reduced and the sheet is pasted when it is small in the print area.

Further, in the above-described embodiment, the single-leaf sheet P is used.
In the above description, the cut sheet 602 is attached, but the cut sheet 60 is attached to a sheet bundle including a plurality of sheets.
Even if 2 is attached, the same effect can be obtained.

In FIG. 14A, the conveying roller 306
The discharged sheets are temporarily stored in the intermediate tray 311, and the stored sheet bundle is bundle-conveying roller pairs 309 and 3.
14 is carried to the roller 102 and the same operation as in the sheet pasting mode of the above-described embodiment is performed.
As in (b), it is possible to attach the cut sheet to the bottom sheet of the output bundle.

In the above-mentioned embodiment, the continuous sheet is printed before the cut sheet is attached, but the same effect can be obtained by performing the print processing on the cut sheet after being attached to the sheet P. can get.

As shown in FIG. 13, the continuous sheet feeding section 1
Reference numeral 01 is composed of a cartridge 114, a cutter 110, and a conveyance roller 109, and has a printing unit 111 between a paper discharge roller 121 and the conveyance roller 103.

The continuous sheet is cut in the same manner as in the above-described embodiment, and after being attached to the sheet P, the roller 103 is used.
Transported by Here, the sheet P to which the cut sheet has been pasted is controlled and fed in the sub-scanning direction by the conveyance motor M7 (not shown), and the printing device 111 is set to the printing motor M.
It is obvious that printing can be performed on the affixed cut sheet by controlling the movement in the main scanning direction by the method 5.

As described above, the cut second sheet is attached to the back surface side of the discharged first sheet P. The reason will be described below.

FIG. 15 is a view showing a tray stacking state, FIG.
6 is a view seen from the direction of arrow 606 in FIG.

When the cut sheet 602 is attached to the upper surface side of the sheet, for example, in the vicinity of the front end in the sheet conveying direction as shown in FIGS. 15 and 18, the cut sheet 602 is attached to the first sheet bundle or the sheet P600 on the tray 120. Stacked in the stacked state, but the leading edge P60 of the next discharge sheet P604
When the sheet 4 ′ hits the side edge 602 ′ of the cut sheet and the sheet is conveyed as it is by the conveying means 121, FIG.
7, there is a problem that the sheet 600 ′ to which the cut sheet of the already stacked bundle top sheet is attached is pushed out (FIG. 18 is a view seen from the arrow 607 direction in FIG. 17).

As described above, if the cut sheet is attached to the lower surface side of the sheet, as shown in FIGS. 19 (a), (b) and FIG.
0, as shown in FIG. 21, the cut sheet 6 is added to the already loaded bundle 600.
Even if 02 is attached, the leading edge of the next discharged sheet does not get caught, so that it is possible to maintain the consistency of the sheet bundle on the tray 120 (FIG. 19B,
FIG. 21 shows an arrow 608 in FIG.
(Viewed from the arrow 609 direction).

<Embodiment 2> In the first embodiment, the cut sheet 602 is attached to the sheet P at the edge parallel to the sheet conveying direction to the tray 120. It is needless to say that the same effect can be obtained even if a cut sheet is attached to the end edge orthogonal to the sheet conveying direction as shown in (a) and (b).

<Third Embodiment> A third embodiment of the present invention will be described.

As described above, in order to prevent the leading edge of the next stacked sheet from being caught by the cut sheet on the already stacked bundle on the tray, the attachment of the cut sheet on the back side of the sheet on the tray 120 will be described. But tray 12
Even if the cut sheet is attached to the upper surface of the sheet on 0, the sheet bundle consistency on the tray can be maintained by the following configuration. Hereinafter, the description will be made.

As described above with reference to FIGS.
When the cut sheet is pasted on the upstream side of the discharged sheet on the upper surface side of the sheet, the leading edge of the next stacked sheet P604 ′ is already caught when the next stacked sheet P604 is discharged, as shown in FIG. Stack (or sheet)
When moving in the direction of arrow 650 after coming into contact with the upper surface 600 ″, upstream of the contacting position 610 (distance 611)
Is larger than 0), and the 602 ′ surface of the cut sheet 602 is sufficient.

The position where the cut sheet is attached is as described above (see FIG. 8).
As described above), it is possible to easily change the sheet P by controlling the stop position of the sheet P, and the cut sheet attachment position on the sheet can be changed to the sheet P6 as shown in FIG.
The distance 612 from the leading end of 00 'to the 602' of the cut sheet 602 may be set.

As described above, after the sheet is discharged by the discharge roller 121, the sheet is moved by the weight of the sheet to the tray or the sheet on the tray, and is moved downward in the conveying direction to the sheet stopper 61.
Although the apparatus of the type in which the sheets are stacked in contact with the sheet 3 has been described, as shown in FIG. 24, the tray 120 ′ is substantially horizontal or the sheet conveying downstream side is inclined downward and the sheet stopper 6
Even in the type in which 14 ′ is provided and the leading end of the discharged sheet is brought into contact with the wall surface 614 of the stopper to move the sheet in the direction of arrow 660 to stack the sheet on the tray,
60 of the cut sheet 602 is located upstream (distance 611 is greater than 0) from the position 610 where the leading end P604 ′ of the next stacked sheet P604 contacts the already stacked bundle (or sheet) upper surface 600 ″.
It goes without saying that the same effect can be obtained by setting the attachment position (612) of the cut sheet 602 so that the 2'side is present.

<Fourth Embodiment> A fourth embodiment of the present invention will be described.

As described above (shown in FIG. 21), after discharging the sheet, the sheet is moved by the dead weight of the sheet on the tray or on the sheet on the upstream side in the conveying direction, and is brought into contact with the sheet stopper 613 to stack the sheet. Then, if the cut sheet 602 is attached to the upper surface of the sheet at the rear end portion of the sheet, the following problems may occur, which will be described with reference to FIGS. 25 to 27.

The first bundle of sheets or the sheet P600 on the tray 120 is stacked with the cut sheet 602 attached, but the next discharged sheet P604 is kicked out by the conveying means 121 as shown in FIG. Then, the sheet trailing edge P604 lands on the already stacked bundle P600 (see FIG. 2).
6), it moves in the direction of arrow 675 in FIG. 27 by its own weight and tries to contact the sheet stopper 613, but the cut sheet 6
The end face 602 ″ of No. 02 is hit, resulting in a defective stacking alignment state as shown in FIG.

Therefore, as described above, the cut sheets are stacked from the front end side of the position P604 where the trailing end portion P604a of the next stacked paper sheet P604 is stacked on the upper surface 600 ″ of the already stacked bundle (or sheet) and starts to move at the arrow 800. Than length 620,
The cut sheet is attached in the same manner as described above so that the surface 602 ″ of the cut sheet 602 has a short length 621.

By attaching the cut sheet 602 as described above, as shown in FIG.
It can be loaded on the P600 to which is adhered while maintaining consistency.

This is because there is a stopper on the tray 120 in the sheet conveying direction, and the tip end portion abuts on the stopper or the like when the sheet is discharged onto the tray 120 and the sheet P604 rear end P604a does not move in the direction of arrow 801 in FIG. Alternatively, the same effect can be obtained even if it is configured to immediately move in the direction of the arrow 800 when dropped on the sheet bundle.

<Fifth Embodiment> As described above, when the sheets are discharged one by one onto the tray, the prevention of being caught by the cut sheets attached to the already stacked bundle on the tray has been described. It goes without saying that the same configuration may be used even when the bundle P630 is transferred and stacked on the tray.

The cut sheet 602 may be attached to the next stack P630 while the sheet bundle P630 is being conveyed. If the sheet bundle P630 is in the sheet state, it may be attached to another tray once. It is also possible to stack the bundles and transport the bundle to the tray 120 as shown in FIG.

<Embodiment 6> The above description has been made of the configuration in which the transport means 121 to the tray is transported by the roller pair.
As shown in FIGS. 35 and 36, the same effect can be obtained even when the gripper 701 is used in a configuration for conveying a sheet bundle or sheets.

Next, an example of the movement of conveying the sheet or the sheet bundle by the gripper 701 will be described.

FIG. 35 (b) is a top view of FIG. 35 (a).

Reference numeral 700 is a first tray, and 706 is a tray stopper. When stacking the sheet bundle on the tray 700, the tray stopper 706 is at the position 706 ′ and the sheet P703 ′ (P703 ′ is the sheet P703 shown in FIG.
The original position is shown in (a) and (b).

When the stacking is completed, the gripper 701 is moved to the position 7 corresponding to the stack of trays 700 by the driving means (not shown).
01 ′, and holds the sheet bundle P703 ′ by a driving unit (not shown) (at this time, since the tray 700 and the tray stopper 706 have the cutout 707, the gripper 70).
It does not interfere with 1.)

A stopper 706 is provided by a driving means (not shown).
Rotates about the rotation center 710 from the position 706 ′ to the position 706.

Then, the gripper 701 moves in the direction of arrow 711, and the sheet bundle P703 moves from the tray 700 to the second position.
(P703 → P703) onto the tray 702 (see FIG. 35 (a), (b)).

Here, the above-mentioned cut sheet is attached as follows.
It may be carried out on the tray 700 before being loaded on the tray 700 or while being moved from the tray 700.

The method of moving the sheet bundle 703 and the position where the cut sheets are attached will be described with reference to FIGS. 36 (a) to 36 (f).

Second tray 702 and sheet end stopper 7
13 is an arrow 712, respectively, by a driving means (not shown).
It can be moved to 713A and is stopped at a predetermined position in the figure depending on the sheet stacking amount and the sheet size.

When the leading edge 703a of the sheet P703 is stacked on the tray 702 (FIG. 36 (a)), the gripper 7
01 has moved a predetermined amount in the direction of arrow 714 (Fig. 36).
(B)) Then, it starts moving again in the direction of arrow 716 and moves to the position where the bundle tip 703a abuts against the predetermined stopper 715 (FIG. 36 (c)).

Therefore, as shown in FIG. 36 (d), the gripper 7
When 01 is released, the sheet bundle P703 is stacked on the tray or on the tray P720 on the tray between the leading end stopper 713 and the stopper 715 (FIG. 36 (e),
(F)).

Here, the position where the cut sheets are stuck is set to a distance 704 from the sheet end of the end face 602A of the cut sheet 602 from a distance 704 from the sheet end where the sheet bundle tip 703a starts moving in the direction of arrow 715. If the one is made larger, the above-mentioned misalignment due to the catch between the cut 602 and the edge of the next stacked sheet is eliminated.

Further, in the above-described embodiment, the gripper 70 is used.
1 was once moved in the direction 714 and then moved as indicated by the arrow 716, but the movement of the arrow 716 was not performed.
Even with the configuration in which the gripper is released at the position of 6 (a) and the sheet bundle is moved by its own weight to the stopper 715, the position at which the sheet end 703a starts to move in the arrow 715 direction is set to 704 above. It goes without saying that similar effects can be obtained by doing so.

<Seventh Embodiment> A seventh embodiment of the present invention will be described.

In the above-mentioned configuration, when the cut sheet is attached to the upper surface of the sheet on the tray, the cut sheet is attached to the side edge parallel to the sheet conveying direction, but the following configuration is also applied to the orthogonal side edge. This is possible.

FIG. 38 shows a view seen from the direction of arrow 905 in FIG.

As described above, in order to prevent the leading edge of the next stacked sheet P604 from being caught by the cut sheet,
In the present embodiment, the cut sheet 602 is the sheet P66.
Affixed to the edge 970 which is orthogonal to the transport direction 960 of 0,
The pasting position 900 is set so that the edge 602Y of the cut sheet has a relationship with the position 610 at which the next stacked sheet comes into contact so that the distance 901 becomes larger than zero.

By doing so, the same effect as that of the above-described embodiment can be obtained. Moreover, in addition, FIG.
As shown in FIG. 9 and FIG. 40 (FIG. 40 is a view seen from the arrow 990 direction in FIG. 39), the sheet rear end P shown in the fourth embodiment is shown.
Even if the cut sheet 602 is caught by the cut sheet 602,
If the length is shorter than the length of 620, the same effect can be obtained even in the direction orthogonal to the transport direction.

<Embodiment 8> Further, even when the cut sheet is stuck on the lower side of the sheet, it is more preferable to set the position for sticking the cut sheet on the upper surface of the sheet.

This embodiment will be described with reference to FIGS. 31 to 33 (FIG. 32 is a view seen from the direction of arrow 622 in FIG. 31, FIG. 33 is a view seen from the direction of arrow 623 of FIG. 31).

As described above, even when the cut sheet 602 is attached to the back side of the sheet, the next stacked sheet P604 is obliquely discharged for some reason, and
As shown in FIG. 3, when the cut sheet attaching side P604B at the leading end of the sheet P604 is curved to the tray side, the sheet may be caught as in the above.

Therefore, even when the cut sheet is attached to the lower side of the sheet, it is more effective to attach the cut sheet to the position of the above-mentioned relationship.

[0106]

As described above, according to the present embodiment, the first sheet or the stack of the second sheets with respect to the sheet bundle is provided with the first sheet in the sheet stacking state on the stacking means.
Since it is on the lower surface side of the sheet or the sheet bundle, the next stacked sheet or the sheet bundle can be stably loaded without being caught by the already loaded first sheet or the second sheet of the sheet bundle. , The alignment at the time of stacking the first sheet or the sheet bundle is improved. Further, when the first sheet or the sheet bundle is discharged onto the stacking unit, the first edge of the first sheet or the sheet bundle in the discharge direction is located upstream of the position where the front edge contacts the already stacked sheet or the sheet bundle. Since the second sheet is positioned, even when the second sheet is on the upper surface of the first sheet or the sheet bundle on the stacking unit,
The first sheet or the sheet bundle can be stably stacked without being caught on the already stacked sheet or the second sheet of the sheet stack, and the consistency of the sheet or the sheet bundle on the stacking unit can be improved. it can.

When the first sheet or the sheet bundle is stacked on the stacking means, after the front edge of the next stacked sheet or sheet bundle in the transport direction comes into contact with the already stacked sheet, the direction opposite to the discharge direction is obtained. When moving and stacking the sheet on the first sheet or the stack of sheets, the position where the second sheet is attached is
In the sheet stacking state on the stacking unit, the upstream side of the contact position of the front edge of the next stack of sheets or a stack of sheets with respect to the already stacked sheet and the downstream side of the contact position of the rear edge. By doing so, even if the second sheet is on the upper surface of the first sheet or sheet bundle on the stacking means, the next stacked sheet or sheet bundle becomes the second sheet of the already stacked sheets or sheet bundle. The sheets can be stably stacked without being caught, and the consistency of the sheets or the sheet bundle on the stacking means can be improved.

Further, when the first sheet or the sheet bundle is stacked on the stacking means, after the trailing edge of the next stacked sheet or sheet bundle in the conveying direction comes into contact with the already stacked sheet, the sheet is opposite to the discharging direction. In the case of moving in the direction and stacking, the attachment position of the second sheet with respect to the first sheet or the sheet bundle is
In the sheet stacking state on the stacking means, the second stacking sheet is set on the upstream side of the position where the backward stacking sheet or the rear end edge of the sheet bundle starts to move in the opposite direction to the already stacked sheet, so that the second sheet Even when the sheet is on the upper surface of the first sheet or the sheet bundle on the stacking unit, the next stacked sheet or the sheet bundle is the second of the already stacked sheets or the sheet bundle.
The sheets can be stably stacked without being caught on the sheet, and the consistency of the sheets or the sheet bundle on the stacking means can be improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of an image forming apparatus to which a sheet processing apparatus of the present invention can be applied.

FIG. 2 is a vertical sectional front view of the sheet feeding unit.

FIG. 3 is a vertical sectional rear view of the sheet feeding unit.

FIG. 4 is a view as seen from an arrow A in FIG.

FIG. 5 is a view similar to FIG.

FIG. 6 is a right side view of FIG.

FIG. 7 is a perspective view of the continuous sheet.

FIG. 8 is an operation diagram of the swing guide.

9A is a flowchart showing a sheet processing operation mode, FIG. 9B is a flowchart showing an initial mode, and FIG. 9C is a flowchart showing an initial operation of the sheet feeding unit.

FIG. 10 is a flowchart of the sheet transport mode, FIG. 10D is a flowchart of the print mode, and FIG.
Figure (f) is a flowchart of the guide swing mode.

FIG. 11 is a flowchart of the sheet pasting mode.

FIG. 12 is a perspective view of a sheet to which a cut sheet is also attached.

FIG. 13 is a vertical cross-sectional front view of the sheet processing apparatus showing a modified example of the arrangement of the printing apparatus.

FIG. 14 is a vertical sectional front view of an image forming apparatus similarly having an intermediate tray portion.

FIG. 15 is a side view of the tray portion showing a defective sticking position of the cut sheet.

16 is a view from the arrow 606 of FIG.

FIG. 17 is a side view of the tray portion showing a stacking failure of sheets.

FIG. 18 is a view in the direction of arrow 607 of FIG.

FIG. 19A is a side view of the tray section showing a sheet stacking state according to the first embodiment of the present invention.

FIG. 20 is an operation diagram of FIG.

21 is a view on arrow 609 of FIG. 20. FIG.

FIG. 22A is a side view of the tray portion showing a sheet stacking state according to the second embodiment of the present invention.

FIG. 23 is a view in the direction of arrow 650 in FIG. 22.

FIG. 24 is a side view of the tray section showing a sheet stacking state according to the third embodiment of the present invention.

FIG. 25 is a side view of the tray section showing a sheet stacking failure.

FIG. 26 is an operation diagram of FIG. 25.

FIG. 27 is an operation diagram of FIG. 25.

FIG. 28 is a side view of the tray section showing a sheet stacking state according to the fourth embodiment of the present invention.

FIG. 29 is an operation diagram of FIG. 28.

FIG. 30 is an operation diagram of FIG. 28.

FIG. 31 is a side view of the tray section showing a sheet stacking state according to the eighth embodiment of the present invention.

FIG. 32 is a view on arrow 622 in FIG. 31.

FIG. 33 is a side view of FIG. 31.

FIG. 34 is a side view of the tray section showing a sheet stacking state according to the fifth embodiment of the present invention.

FIG. 35 is a diagram showing a sheet stacking state according to the sixth embodiment of the present invention, in which (a) is a side view and (b) is a plan view.

FIG. 36 is an operational view of the device of FIG. 35.

FIG. 37 is a side view of the tray section showing the sheet stacking state according to the seventh embodiment of the present invention.

FIG. 38 is a view 950 of the arrow of FIG.

FIG. 39 is a side view of the tray portion showing a sheet stacking state according to the seventh embodiment.

FIG. 40 is a view 990 of the same in FIG.

FIG. 41 is a side view of a tray section according to the conventional sheet processing apparatus.

FIG. 42 is a side view showing a stacked state of the shifted sheet bundle.

FIG. 43 is a side view of the tray section of the conventional sheet processing apparatus.

FIG. 44 is a side view showing a state in which one of the shifted sheet bundles has been pulled out.

[Explanation of symbols]

 P sheet (first sheet) 100 sheet processing apparatus 101 sheet feeding unit (first feeding unit) 102 conveyance rollers (first feeding unit) 103 conveyance rollers (first sheet conveyance unit) 104 and 105 Swing guide 106 Pressing roller (sheet pasting part) 111 Printing device (printing means) 120 Tray (stacking means) 121 Discharging roller (discharging means) 200 Circular document processing apparatus 300 Image forming apparatus main body 303 Transfer section (image forming means) ) 306 Discharging means of image forming apparatus 602 Cut sheet (second sheet) P604, P604 sheet (first sheet) S604, S660 sheet (first sheet) P630, P703 sheet bundle (first sheet bundle)

[Procedure amendment]

[Submission date] August 7, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

19A is a side view of the tray portion showing a sheet stacking state according to the first embodiment of the present invention, and FIG. 19B is a view 608 in FIG. 19A.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Fig. 22

[Correction method] Change

[Correction contents]

22A is a side view of the tray portion showing a sheet stacking state according to the second embodiment of the present invention, and FIG. 22B is a view 650 of FIG. 22A.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuaki Hirai 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (6)

[Claims] 1. A first feeding unit for feeding a first sheet, a first sheet conveying unit for conveying a first sheet or a sheet bundle conveyed from the first feeding unit, The second sheet feeding section for feeding the second sheet, and the second sheet conveyed from the second sheet feeding section are the first sheet.
A sheet adhering section for adhering to the first sheet or sheet bundle of the sheet conveying section, ejecting means for ejecting the first sheet or sheet bundle to which the second sheet has been adhered, and the ejected first sheet or sheet bundle. In a sheet processing apparatus having a stacking unit for stacking one sheet or a sheet bundle, the attachment surface of the second sheet with respect to the first sheet or the sheet bundle has a sheet stacking state on the stacking unit, A sheet processing apparatus, which is on a lower surface side of a first sheet or a sheet bundle. 2. A first feeding unit for feeding a first sheet, a first sheet conveying unit for conveying a first sheet or a sheet bundle conveyed from the first feeding unit, A second feeding unit that feeds a second sheet, and a second sheet that is conveyed from the second feeding unit are the first feeding unit.
A sheet adhering section for adhering to the first sheet or sheet bundle of the sheet conveying section, ejecting means for ejecting the first sheet or sheet bundle to which the second sheet has been adhered, and the ejected first sheet or sheet bundle. In a sheet processing apparatus having a stacking unit configured to stack one sheet or a sheet bundle, a position where the second sheet is attached to the first sheet or the sheet bundle is a sheet stacking state on the stacking unit, A sheet processing apparatus, which is upstream of a position where a front edge of a next stacked sheet or a sheet bundle in the discharge direction abuts. 3. A first feeding unit for feeding a first sheet, a first sheet conveying unit for conveying a first sheet or a sheet bundle conveyed from the first feeding unit, The second sheet feeding section for feeding the second sheet, and the second sheet conveyed from the second sheet feeding section are the first sheet.
A sheet adhering section for adhering to the first sheet or sheet bundle of the sheet conveying section, ejecting means for ejecting the first sheet or sheet bundle to which the second sheet has been adhered, and the ejected first sheet or sheet bundle. Stacking means for stacking one sheet or a sheet bundle, and, when stacking the first sheet or the sheet bundle on the stacking means,
In the sheet processing apparatus, in which the front end edge in the transport direction of the next stacked sheet or sheet bundle comes into contact with the already stacked sheet and then moves in the opposite direction to the stacking direction and stacks the first sheet or sheet bundle. The second sheet pasting position is upstream of the abutting position of the front edge of the next stacked sheet or the sheet stack in the stacked state on the stacking means, and
A sheet processing apparatus, which is located downstream of a contact position of a trailing edge. 4. A first feeding unit for feeding a first sheet, a first sheet conveying unit for conveying a first sheet or a sheet bundle conveyed from the first feeding unit, The second sheet feeding section for feeding the second sheet, and the second sheet conveyed from the second sheet feeding section are the first sheet.
A sheet adhering section for adhering to the first sheet or sheet bundle of the sheet conveying section, ejecting means for ejecting the first sheet or sheet bundle to which the second sheet has been adhered, and the ejected first sheet or sheet bundle. Stacking means for stacking one sheet or a sheet bundle, and, when stacking the first sheet or the sheet bundle on the stacking means,
In the sheet processing apparatus, in which the trailing edge of the next stacked sheet or sheet bundle in the transport direction comes into contact with the already stacked sheet and then moves in the direction opposite to the discharge direction and stacks the first sheet or sheet bundle. The position where the second sheet is attached to the second sheet in the sheet stacking state on the stacking unit is more than the position at which the second sheet starts to move in the opposite direction after the rear edge of the sheet or the sheet stack of the next sheet abuts the already stacked sheet. , A sheet processing apparatus characterized by being on the upstream side. 5. The sheet processing apparatus according to claim 1, further comprising a printing unit that prints on the second sheet. 6. A sheet processing apparatus according to claim 1, an image forming unit for forming an image on the sheet, and an ejecting unit for ejecting the image-formed sheet to the sheet processing apparatus. An image forming apparatus characterized by the above.