JP4492494B2 - Paper processing apparatus and image forming system - Google Patents

Description

  The present invention relates to a sheet processing apparatus and an image forming system having the sheet processing apparatus.

  Sheets on which images such as letters, patterns, and photographs are formed are often bound so as to be suitable for handling such as filing. Accordingly, a post-processing device that performs post-processing such as stapling is often attached as an accessory device to an image forming apparatus such as a copying machine or a printer.

  2. Description of the Related Art Conventionally, a binding processing apparatus that performs a binding process on a plurality of sheets has generally performed a stapling process using a binding needle.

Further, as a post-processing apparatus suitable for use in combination with an image forming apparatus, Patent Document 1 proposes a bookbinding apparatus that creates a booklet by gluing one side of a sheet bundle.
JP 2004-209870 A

The process of binding sheets by stapling is a simple binding process in which sheets are bound by a simple processing process compared to binding processes such as bookbinding, and mainly has the following advantages.
(1) The binding process is simple.

The binding process can be easily performed with a simple instrument such as a stapler, and can be incorporated into a small processing apparatus such as a post-processing apparatus used in combination with an image forming apparatus.
(2) Although the sheet bundle is held relatively firmly, it is relatively easy to separate it into one sheet.
(3) The increase in the paper volume due to the binding portion is small.

However, the staple processing has the following problems.
(1) There is a problem in document disposal processing and recycling processing. That is, when the document is disposed of, the stapled document is a composite of a combustible paper and a non-combustible binding needle. The process of separating is added to increase the number of processing steps.
(2) Even when paper is put on the recycling process, it is necessary to separate the binding needle from the paper, which increases the number of processing steps.
(3) When separating into one sheet, the ratio of missing parts is large, and the value as a document is reduced. In extreme cases, part of the image may be lost.
(4) Since the binding portion is higher than the other portions, when the staple-processed paper bundle is stacked, the binding portion is significantly higher than the other portions, and the paper bundle for filing, storage, etc. This will hinder the handling of aggregates.

  As another means for binding sheets, there is a method of gluing the entire side of a sheet bundle as in Patent Document 1, but such binding processing is not separated after binding processing as in bookbinding. However, when the paper is separated after the binding process, there is a problem that the paper is damaged due to the strong coupling.

  In addition, the amount of glue consumed is large, and in processing that is frequently used, such as stapling, glue supply becomes a problem.

  The present invention solves the above-described problems in the conventional staple processing, and also performs binding processing for performing binding processing relatively easily as in the conventional staple processing and processing for firmly binding a bundle of sheets like bookbinding. It is an object of the present invention to provide a sheet processing apparatus that enables the above and an image forming system including the sheet processing apparatus.

The object is achieved by the following invention.
1.
A paper processing apparatus having a stacking unit for stacking paper and a coating means for applying an adhesive to one side of a stack of stacked paper,
Wherein Ri one side of all or most in an adhesive is coated and partially sizing treatment mode of applying an adhesive to the portion leaving a majority portion of the bookbinding mode and the one side to bind the bundle of sheets can be selected der,
The application means moves along the longitudinal direction of the spine, which is the one side of the bundle of sheets, and the application means applies the adhesive to the spine of the bundle of sheets in the course of the movement and the application. Control means for controlling to displace between the second positions that do not,
The control means includes
When in the bookbinding mode, the application means moves along the longitudinal direction of the back of the bundle of sheets in the first position, and applies an adhesive to all or most of the one side,
In the partial gluing processing mode, the application means moves along the longitudinal direction of the back of the bundle of sheets while maintaining the second position, and the application means is applied at the position where the adhesive is applied. When the position where the adhesive is applied is finished, the coating means is displaced to the second position and further moved along the longitudinal direction. A sheet processing apparatus that controls to apply an adhesive to a portion that leaves a majority of one side .
2.
2. The sheet processing apparatus according to claim 1, wherein in the bookbinding mode, a cover sheet is added to a bundle of sheets stacked in the stacking unit and a binding process is performed.
3.
The sheet processing apparatus according to 1 or 2, further comprising a control unit, wherein the control unit automatically selects the bookbinding mode and the partial gluing processing mode according to the number of sheets to be bound. .
4).
An image forming system comprising: an image forming apparatus that forms an image on a sheet; and the sheet processing apparatus according to any one of 1 to 3 .

  According to any one of claims 1 to 4, a bound sheet bundle suitable for disposal processing and recycling processing is created.

  In addition, a relatively small number of sheets can be easily bound, and a relatively large number of sheets can be strongly bound. Further, one or a plurality of sheets can be separated relatively easily from a sheet bundle created by a simple binding process.

  According to the invention of claim 3, simple binding processing and bookbinding are automatically selected and executed.

The present invention will be described below with reference to illustrated embodiments, but the present invention is not limited to these embodiments.
<Image forming system>
FIG. 1 is a diagram showing an entire image forming system according to an embodiment of the present invention.

  The image forming system includes an image forming apparatus A and a paper processing apparatus B.

  The image forming apparatus A forms an image on a sheet by an electrophotographic method, and includes an image forming unit A1, a document conveying device A2, an image reading unit A3, and a communication unit A4.

  In the image forming unit A1, a charging device 2, an exposure device 3, a developing device 4, a transfer device 5A, a separating device 5B, and a cleaning device 6 are arranged around the drum-shaped photoconductor 1, and these electrophotographic process devices are used. Charging, exposure, development, and transfer are performed to form a toner image on the photoreceptor 1, and an image is formed on the sheet S1.

  The paper S1 is stored in three paper feed trays 7A. The paper S1 is fed one by one from these paper feed trays 7A, and the toner image on the photoreceptor 1 is transferred to the paper S1 by the transfer device 5A. Is done.

  The toner image transferred to the sheet S1 passes through the fixing device 8 and is fixed. The fixed sheet S1 is discharged from the discharge roller 7C or conveyed to the refeed path 7E.

  In face-down paper discharge in single-sided printing, face-up paper discharge in single-sided printing, or surface image formation in double-sided image formation, the switching gate 7D switches and guides the paper S1. That is, in face-up paper discharge, the switching gate 7D advances the paper S1 straight. In face-down paper discharge and double-sided image formation, the switching gate 7D guides the paper S1 downward.

  In face-down paper discharge, the paper S1 is guided downward, then switched back and conveyed upward, and discharged from the paper discharge roller 7C.

  In the double-sided image formation, the sheet S1 is guided downward, and after reversing the front and back by switchback, the sheet S1 is re-fed to the transfer unit where the transfer device 5A is arranged through the refeed path 7E, and the back image is transferred. .

The document transport device A2 transports documents one by one to the reading position. The image reading unit A3 reads an image of the document conveyed by the document conveying device A2 or the document placed on the document table 9, and generates an image signal. The communication unit A4 communicates with the network device and generates an image signal in response to an image formation command transmitted from the network.
<Bookbinding process>
The sheet processing apparatus B is an apparatus that forms a book by bundling a plurality of main configuration sheets sent from the image forming apparatus A to form a stack of main configuration sheets, and joining cover sheets to the bundle. In the following description, the main constituent paper is referred to as paper S1, the cover paper is referred to as cover S2, and the book in which the cover paper is bonded to the main constituent paper is referred to as book S3.

  The sheet processing apparatus B is configured to convey the sheet S1 discharged from the image forming apparatus A to the sheet discharge tray 20 or the sheet reversing section 40, the sheet discharge tray 20, the sheet reversing section 40, one sheet or several sheets at a time. It has a stacking unit 50 that stacks the fed paper S1, a coating unit 60, a cover storage unit 80 that stores a cover S2, a cover support unit 90 that supports the cover, and a main discharge unit 100.

  The sheet S1 discharged from the image forming apparatus A is discharged to the discharge tray 20 through the discharge path 12 by the switching gate 11 provided in the transfer unit 10 or is transferred to the sheet reversing unit 40. The sheet S1 is discharged to the discharge tray 20 when the bookbinding processing mode is not set.

  In the bookbinding mode, the paper S1 is transported to the paper reversing unit 40 through the transport path 13, and after being switched back in the paper reversing unit 40, is transported to the stacking unit 50. In the stacking unit 50, a set number of sheets S1 are stacked, and the stacking unit 50 rotates when the set number of sheets is stacked to hold the bundle of sheets S1 in a substantially vertical state.

  An adhesive is applied by the applying means 60 to the lower surface of the bundle of sheets S1 held by the stacking unit 50 in the vertical state.

  The cover sheet S2 comes into contact with and adheres to the bundle of sheets S1 coated with the adhesive.

  The book S3 created by bonding the cover sheet S2 to the bundle of sheets S1 is discharged to the book discharge unit 100.

  Hereinafter, each part of the sheet processing apparatus will be described in detail with reference to FIG. FIG. 2 is a front sectional view of the sheet processing apparatus B.

The sheet S1 conveyed through the conveyance path 13 is discharged by the paper discharge roller 14, and after rising through the inclined reverse plate 402 via the conveyance roller 401, the conveyance roller 401 reverses the rotation and conveys the sheet S1 downward. . Reference numeral 403 denotes an alignment member that aligns the sheets S1 on the reversing plate 402, and 404 denotes a stopper used when stacking a plurality of sheets S1 on the reversing unit 402, and can be set to a solid line position or a dotted line position. . The sheet S1 is not stacked on the reversing unit 402 at the position of the solid line, and the sheet S1 is stacked on the reversing unit 402 when it is at the position of the dotted line. The alignment member 403 operates when stacking sheets on the reversing unit 402 and aligns sheets in the conveyance width direction. The reversing plate 402 and the stopper 403 constitute a buffer stacking unit that stacks the sheets S1 before the stacking of the sheets S1 on the stacking unit 50. The sheet S1 transported downward falls to the stacking unit 50 and accumulates. The stacking unit 50 includes a support plate 502 and a receiving plate 506, and the sheet S1 descending the sheet reversing unit 40 is supported in an inclined state by the support plate 502 and the receiving plate 506.
The sheets S1 sequentially discharged from the image forming apparatus A are stacked on the stacking unit 50, and a bundle of sheets S1 is formed. The number of sheets S1 forming the bundle is set in a setting unit (not shown). Reference numeral 504 denotes a suppression member that suppresses the floating of the stacked sheets S1 and moves up and down each time the sheets S1 are supplied to the stacking unit 50, thereby suppressing the sheets S1. Reference numeral 505 denotes an alignment plate that aligns the side edges of the paper.

  When the set number of sheets S1 are stacked, the holding plate 503 operates to hold the bundle of sheets S1.

  In a state where the bundle of sheets S1 is held, the stacking unit 50 rotates about the shaft 501 to change the bundle of sheets S1 from the inclined state to the vertical state.

  FIG. 3 shows a process of holding the bundle of sheets S1 in a vertical state on the stacking unit 50 and applying an adhesive.

  Prior to the coating process, the holding of the sheet by the holding plate 503 constituting the present sheet supporting unit will be described.

  The holding plate 503 moves by driving the motor M4, presses the bundle of sheets S1, detects an increase in driving torque due to the pressing, and stops, whereby the bundle of sheets S1 is strengthened by the support plate 502 and the holding plate 503. Retained. As described above, the support plate 502 and the holding plate 503 constitute a main sheet supporting unit that supports the bundle of sheets S1. The stop position of the holding plate 503 is detected by the encoder 509 and stored in the storage device of the position detection unit 511.

  At the stage where the bundle of sheets S1 is held, the receiving plate 506 is rotated 90 ° by a motor (not shown) and retracted as shown in FIG.

  In the state of FIG. 3B, the lower surface SA (the lower surface in FIG. 3) of the bundle of sheets S <b> 1 is separated from the application roller 62 as illustrated in FIG.

  Next, as shown in FIG. 3D, the coating means 60 containing the adhesive 63 is raised, and the adhesive layer on the peripheral surface of the coating roller 62 contacts the lower surface SA in the bundle of sheets S1. Then, the application means 60 moves in a direction perpendicular to the paper surface of FIG. 3 to apply the adhesive 63 to the lower surface SA of the bundle of paper S1. The adhesive 63 is housed in a solid form in the adhesive container 66, heated by the heater 64, melted, and supplied to the coating means 60 (see FIG. 4). The coating means 60 has a container for storing the adhesive 63 and a coating roller 62, and moves in a direction perpendicular to the paper surface of FIGS.

  As the adhesive, a hot melt adhesive conventionally used in printing and bookbinding can be used, and an environmentally appropriate adhesive such as an olefin hot melt adhesive and a synthetic rubber hot melt adhesive is preferable.

  FIG. 4 explains the coating step from the pre-coating step of FIG. 3C to the coating step of FIG.

  At the start of bookbinding, the application means 60 is at the right end position (first position) as the home position, as shown in FIG. The home position of the coating means 60 is the right end position shown in FIG. 4A and moves to the left from the home position at the start of the bookbinding process, but the movement from this home position to the left end position (second position) The sheet S1 is carried out by driving the belt 67 (second moving means) driven by the motor M3, and is stacked on the stacking unit 50 by the sheet sensor SE provided immediately downstream of the reversing plate 402 (shown in FIG. 2). This is performed based on a signal that detects the passage of the leading edge of the last sheet S1. In the process in which the application unit 60 moves to the left end position, the application roller 62 is separated from the lower surface SA of the bundle of sheets S1.

  Then, at the stage of FIG. 4B in which the application unit 60 moves from the left end position toward the right end position, the application roller 62 is raised by the drive of the motor M2 and comes into contact with the lower surface SA of the paper S1 to remove the adhesive 63. Apply. The start of the coating process in FIG. 4B is a timing control so that when the bundle of sheets S1 is set in a vertical coatable state, the coating is started after seeing a temporary stop after cutting the cover sheet. Is done.

  By such timing control, the operation of each part is continuously executed, and the bookbinding process is performed with high efficiency.

  After the coating means 60 moves to the home position, the cover sheet S2 is joined.

  FIG. 5 shows the joining process of the cover sheet S2.

  As shown in FIG. 2, the cover sheet S2 is stored in a sheet feed tray 801 of a cover sheet storage unit 80 provided in the lower part of the sheet processing apparatus B, is conveyed by a feed roller 802, and is cut by a cutter 81 as a cutting unit. The sheet is cut to a length corresponding to the bundle of S1, aligned by the cover sheet support unit 90, switched back, conveyed by the conveyance roller, and placed on the cover sheet support unit 901 in a horizontal state. The cover sheet support means 901 indicated by a chain line is composed of a plurality of members such as pressing members 91 and 92 and cams 93 and 94 for driving the pressing members 91 and 92.

  The cutter 81 cuts the cover sheet S2 to a length based on the information on the size of the cover sheet S2, the size information on the sheet S1, and the information on the thickness of the bundle of sheets S1 stored in the position detection unit 511. Accordingly, as shown in FIG. 7, the spread-side end portions S1E and S2E of the sheet S1 and the cover sheet S2 in the book S3 are aligned. Further, the chips of the cover sheet S2 are accommodated in the waste container 82.

  FIG. 5A shows a state where the application of the adhesive 63 is completed. In the state of FIG. 5A, the cover sheet support means 901 supports the cover sheet S2 at a lower position away from the lower surface of the bundle of sheets S1, as shown in FIG.

  Next, the cover sheet support means 901 is driven and raised by belts 99A and 99B (first moving means, shown in FIG. 2) to be in the state shown in FIG. 5B, and the cover sheet S2 is moved to the bottom surface SA of the bundle of sheets S1. That is, it is brought into contact with the adhesive application surface. The cover pressing members 95, 96, and 97 are raised and lowered together with the cover sheet supporting means 901. Therefore, as shown in FIG. 5B, when the cover sheet support means 901 is raised, the cover sheet pressing members 95, 96, and 97 hold the cover sheet S1 from above, and hold the cover sheet S2 in a flat state.

  The cover sheet support means 901 further rises several mm from the position shown in FIG. The position raised several mm is the position shown in FIG. After rising, the pressing members 91 and 92 as bending means press the cover S2 from the left and right sides, add corners to the boundary between the back cover and the front cover and the boundary between the back cover and the back cover, and the cover S2 to the sheet S1. Adhering to each other, a book is formed.

  The joining process of the cover sheet S2 shown in FIG. 5 is started immediately after the coating means 60 returns to the home position in FIG. Therefore, since the joining process of the cover sheet S2 is started immediately after the application of the adhesive 63 is completed, the applied adhesive 63 is prevented from drying before joining, and poor adhesion due to drying is prevented. That is, when the adhesive 63 is applied to the lower surface SA of the bundle of sheets S1 in the process in which the application unit 60 moves from the first position to the second position, the application unit 60 is again applied after application due to space problems. Since it is necessary to join the cover sheet S2 after returning to the first position, it takes time from application to joining, and in addition to the problem of drying of the adhesive, the time required for the joining process becomes long.

  The cover sheet supporting means 901 is raised and lowered as shown in FIG. 5 by belts 99A and 99B driven by a motor (not shown), and the movement of the pressing members 91 and 92 in the left-right direction is performed by a motor (not shown). ) Is driven by cams 93 and 94 (cam shapes are shown in FIG. 8). However, in addition to the structure in which the pressing members 91 and 92 are moved by a cam, other mechanisms such as a structure in which a rack is provided on the pressing member and the pinion is engaged with the rack can be used.

  Further, the belts 98A and 98B are in the positions indicated by the solid lines in FIG. 8 which is a top view of the cover sheet support means 901 and support the cover sheet S2 when the cover sheet support means 901 shown in FIG. As shown in FIGS. 5B and 5C, when the cover sheet support means 901 moves up and down, it moves to the retracted position indicated by the chain line in FIG. 8, and covers S2 and the cover sheet. A space in which the paper support means 901 rises and falls is formed.

  The processing of the cover sheet S2 after joining the cover sheet S2 will be described with reference to FIGS.

  When the joining of the cover sheet S2 is completed, as shown in FIG. 6, the cover sheet support means 901 is driven and dropped by the belts 99A and 99B and returns to the home position.

  In the return step of FIG. 6 in which the cover sheet supporting means 901 returns to the home position, as shown by the arrows, the cover pressing members 95 to 97 rotate about their support shafts and become almost vertical. At the stage of returning to, the display pressing members 95 to 97 rotate again to change from the vertical state to the horizontal state.

  Subsequently, the holding plate 503 moves to the retracted position, and the pressing members 91 and 92 release the pressing. As a result, the book S3 including the bundle of sheets S1 and the cover sheet S2 falls on the cover sheet support unit 901. FIG. 9A shows a state in which the book S3 is thus supported by the cover sheet support means 901 and the cover pressing members 95 to 97 are positioned below the cover sheet S2.

  In the state shown in FIG. 9A, the belts 98A and 98B start moving as indicated by arrows, and the sheet pressing members 95 to 97 rotate to push up the cover sheet S2. The book S3 is conveyed leftward by the belts 98A and 98B, but the upper part is prevented from moving by the sheet pressing members 96 and 97, so that it falls to the right as shown in FIGS. 9B and 9C. By lying down on the belts 98A and 98B and further transported, the cover sheet S2 is pressed by the cover sheet pressing members 96 and 97 and closely contacts the sheet S1 as shown in FIG. 9C.

  The book S3 is conveyed by the belts 98A and 98B and is discharged to the book discharge unit 100 in FIG.

  The sheet discharge table 101 is moved up and down by belt driving, the sheet discharge table 101 on which the book S3 is placed is lowered, the book S3 is transferred to the belt 102, and the book S3 is conveyed by the belt 102 and discharged from the sheet processing apparatus B. Is done.

  The stacking unit 50 is set to the inclined state shown in FIG. 2 when the stacking unit 50 is in the state shown in FIG. 9A, that is, with the operation of moving the holding plate 503 to the retracted position. .

  In the stage shown in FIG. 3A, that is, in the period from when the stacking unit 50 rotates from the tilted state to the vertical state until it returns to the tilted state from the vertical state through the stage of FIG. 9A. As described above, the application of the adhesive by the applying means 60 and the joining of the cover sheet S2 are performed. During this period, the sheet processing apparatus B carries out image formation by continuously carrying the sheet S1 into the sheet processing apparatus B. When used in combination with the apparatus A, the working efficiency can be further increased.

In order to realize such an improvement in work efficiency, the sheet S1 carried from the image forming apparatus A to the sheet processing apparatus B is accumulated on the reversing plate 402 during the period in which the adhesive is applied and the cover is bonded. Is done. That is, the stopper 404 is set to the position of the dotted line, and a plurality of sheets S1 are stacked on the reversing plate 402 and aligned by the aligning member 403. Then, the stacking unit 50 is returned to the inclined state of FIG. The sheets S1 stacked on the sheet are conveyed to the stacking unit 50.
<Partial pasting process>
The sheet processing apparatus shown in FIGS. 2 to 9 is in a form in which one or a plurality of sheets cannot be separated from a bundle of sheets that have been bound like bookbinding without being damaged, as will be described below. It has a simple binding processing function by partial gluing for binding the paper in a separable manner instead of the finishing binding processing.

  With reference to FIGS. 10 to 12, the partial pasting process which is such a simple binding process will be described.

  As shown in FIGS. 4 and 10, the coating unit 60 is provided with a drying unit 68 having an air outlet near the coating roller 63 and including a blower fan and a duct.

  FIG. 10 is a diagram showing the positional relationship between the applying means 60 and the adhesive application part in the partial gluing process, and FIG. 11 is a block diagram of a control system for performing control in the partial gluing process.

  The movement of the application roller 63 in the partial gluing process will be described with reference to FIG.

  10A, 63A indicates the position shown in FIG. 4B, that is, the position of the application roller 63 when the application means 60 is at the start position at the left end.

  In the partial gluing process, the application roller 63 moves horizontally from the start position of 63A to the position indicated by 63B by driving a motor M3 (shown in FIG. 4).

  Next, the motor M2 (shown in FIG. 4) is driven to rise about 3 mm from the position of 63B to reach the position indicated by 63C, and the coating roller 63 contacts the lower surface SA of the sheet bundle SS.

  In the contact state, the application roller 63 is rotated by driving of the motor M1 (shown in FIG. 4) and horizontally moved to a position indicated by 63D.

  By the movement from the position 63C to the position 63D, the adhesive is applied to the application part SB1 of the lower surface SA.

  After the adhesive application, the application roller 63 descends to reach the position indicated by 63E. The application roller 63 moves horizontally from the position 63E to a position indicated by 63F.

  FIGS. 10B and 10C show a state where the application roller 63 moves from the position 63E to the position 63F. At the position of FIG. 10C where the application roller 63 is at 63F, the drying means 68 is applied to the application unit SB1. Located directly below.

  In the state shown in FIG. 10C, drying air is blown from the drying means 68 to the application part SB1 as indicated by an arrow, and the adhesive applied to the application part SB1 is dried and solidified.

  The adhesive application process shown in FIG. 10 is performed at the left end position of the sheet S indicated by 621 in FIG. 4B and the right end portion of the sheet S indicated by 622, and the bundle of sheets S is bound at two locations. The

  The partial gluing process shown in FIG. 10 is performed by controlling the motors M1 to M3 and the drying means 68 by the control means CR shown in FIG.

  The control means CR executes a plurality of application modes as shown in FIG.

  FIG. 12 shows an example of the adhesive application mode in the partial gluing process.

  As shown by application parts SB1, SB2, and SC in FIG. 12, the application part can select the position and number thereof, and is selected by the control of the control means CR. The application portions SB1, SB2, and SC form a part of the lower surface SA of the sheet bundle SS. However, when all or most of the lower surface SA is used as the application portion, the separation property of the paper is reduced and the separation is performed. In some cases, the paper is greatly damaged. Therefore, like the conventional staple, the majority of the lower surface SA is set as a portion not subjected to the binding process, and the adhesive is applied to a part of the lower surface SA as shown in FIG.

  When the binding process is completed, the cover holding unit 901 moves up to the position shown in FIG. 5B without holding the cover S2.

  When the cover sheet holding unit 901 is raised, the holding member 503 releases the sheet S, and the bound sheet bundle SS falls.

  After dropping, the sheet bundle SS is discharged to the discharge tray 101 through the process shown in FIG.

  The partial gluing process using the adhesive described above is an alternative to the conventional stapling process, and one or several sheets can be separated relatively easily from the bound sheet bundle.

  Further, since the height of the binding portion is almost the same as the other part of the sheet bundle, it is suitable for storage such as filing of the sheet bundle.

  Further, when a document is disposed of, it can be processed as a combustible material, and also in the regeneration process, a step of separating a needle like a staple is unnecessary, which is suitable for regeneration.

  The partial gluing process is often performed as a binding process that enables separation of paper, rather than a strong binding process that does not allow separation of paper as in bookbinding. Due to the nature of the partial gluing process, a partial gluing process is performed up to a predetermined number of sheets, and in a binding process of a predetermined number or more, a binding process is performed by applying an adhesive to all or most of a sheet bundle. Is desirable.

  The control means CR automatically performs the partial gluing process shown in FIG. 12 and the binding process for applying the adhesive to the entire side of the sheet bundle according to the number of sheets to be processed set in the operation unit OP of the image forming system. You can choose.

  Or you may make it select in the operation part OP the partial gluing process by partial application | coating, and the binding process which apply | coats an adhesive agent to the whole.

1 is a diagram illustrating an entire image forming system according to an embodiment of the present invention. 1 is a front sectional view of a sheet processing apparatus according to an embodiment of the present invention. It is a figure which shows the application | coating process of an adhesive agent. It is a figure which shows the movement of an application means. It is a figure which shows the process of joining a cover sheet to this structure paper. It is a figure which shows the process of joining a cover sheet to this structure paper. It is a side view of a book. It is a top view of a cover sheet support means. It is a figure explaining the process of the cover after joining. It is a figure which shows the positional relationship of an application roller and the application part of the adhesive agent in a partial gluing process. It is a block diagram of the control system which performs control in a partial pasting process. It is a figure which shows the example of the application mode of an adhesive agent.

Explanation of symbols

A image forming apparatus B paper processing apparatus 50 stacking unit 60 coating unit 63 coating roller SB1, SB2, SC coating unit

Claims (4)

A paper processing apparatus having a stacking unit for stacking paper and a coating means for applying an adhesive to one side of a stack of stacked paper,
Wherein Ri one side of all or most in an adhesive is coated and partially sizing treatment mode of applying an adhesive to the portion leaving a majority portion of the bookbinding mode and the one side to bind the bundle of sheets can be selected der,
The application means moves along the longitudinal direction of the spine, which is the one side of the bundle of sheets, and the application means applies the adhesive to the spine of the bundle of sheets in the course of the movement and the application. Control means for controlling to displace between the second positions that do not,
The control means includes
When in the bookbinding mode, the application means moves along the longitudinal direction of the back of the bundle of sheets in the first position, and applies an adhesive to all or most of the one side,
In the partial gluing processing mode, the application means moves along the longitudinal direction of the back of the bundle of sheets while maintaining the second position, and the application means is applied at the position where the adhesive is applied. When the position where the adhesive is applied is finished, the coating means is displaced to the second position and further moved along the longitudinal direction. A sheet processing apparatus that controls to apply an adhesive to a portion that leaves a majority of one side . The sheet processing apparatus according to claim 1, wherein in the bookbinding mode, a cover sheet is added to a bundle of sheets stacked in the stacking unit and a binding process is performed. 3. The sheet according to claim 1, further comprising a control unit, wherein the control unit automatically selects the bookbinding mode and the partial gluing processing mode according to the number of sheets to be bound. Processing equipment. An image forming system comprising: an image forming apparatus that forms an image on a sheet; and the sheet processing apparatus according to claim 1 .

Images