JP2012076271A - Bookbinding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bookbinding device by which sheets are surely mutually bonded, at the same time a cover sheet is uniformly and surely bonded to a back part of a sheet bundle end fringe, and an aesthetic design is not deteriorated when binding a book by enfolding the sheet bundle with the cover sheet.SOLUTION: The moving speed of a glue applying moving unit is made variable, the rotational speed of a glue applying roller is made variable, the moving speed of the glue applying moving unit and the rotational speed of the glue applying roller are made variable in the sheet bundle according to the thickness and the sheet sizes of the sheet bundle, the moving speed of the glue applying moving unit and the rotational speed of the glue applying roller are made variable to make a glue applying quantity to the sheet bundle variable according to presence of cutting processing, thereby it is possible to respond to a variety of media and sheet sizes, the sheets do not come off after bookbinding, at the same time a uniform layer of glue is formed between the cover sheet and the back part of the sheet bundle end face, the fruit substance not deteriorating the aesthetic design without causing irregularities and wrinkles can be obtained.

Description

  The present invention belongs to a post-processing apparatus of an image forming apparatus such as a printer, a printing machine, and a copying machine, and stacks sheets printed by the image forming apparatus on a tray and aligns them in a bundle in order of pages. The present invention relates to a bookbinding apparatus in a bookbinding system that binds and binds a booklet.

In general, this type of device is used as a terminal device of an image forming apparatus such as a printer or a printing machine, and stacks image-formed sheets on a page, aligns them in a booklet form, and then glues the end faces to bind to a cover sheet. Widely used as a system. In particular, as on-demand printing such as electronic publishing recently, at the same time as printing of predetermined information, this is automatically bound and mounted, and then the sheet edge is cut and finished into a predetermined booklet simultaneously with post-processing The system to execute is heavily used.
As such a system, for example, Patent Document 1 proposes a system for automatically booklet finishing a sheet output from an image forming apparatus. In this document, a sheet output from an image forming apparatus is guided from its discharge port to a receiving discharge path, stacked and stored in a tray provided below the discharge path, and collected on this tray. The horizontal sheet bundle is turned 90 degrees and guided to the gluing device in the vertical position to perform the gluing process. Then, the glued sheet bundle is folded together with the cover sheet guided to the paper discharge path and bonded. When the end surface of the sheet bundle after bonding that is not glued is cut and trimmed, it is finished in a booklet shape and stored in a storage stacker.

Conventionally, in the system disclosed in Patent Document 1, when gluing to a sheet bundle held in a vertical position, the glue application end surface of the sheet bundle and the application member are pressed against each other with a first contact pressure. There has been proposed a method in which, after performing the cloth operation, the glue application end surface of the sheet bundle and the application member perform the glue application operation in a state where the contact pressure is lower than the first contact pressure or not in contact with each other.
JP 2006-346984 A

  However, in this method, when performing the gluing operation on the sheet bundle, it is necessary to change the distance between the sheet bundle and the application member, and thus delicate control and repetition accuracy are required. In addition, it is necessary to have a configuration in which the distance between the sheet bundle and the application member is variable, and the accuracy of the apparatus itself is also required.

  Therefore, the present invention provides a bookbinding apparatus that securely bonds the cover sheets to each other when the cover sheets are bound and bound to the sheet bundle, and at the same time, the cover sheet is uniformly and reliably adhered to the back of the edge of the sheet bundle and does not impair the aesthetic appearance. Is the main issue.

  In order to solve the above-described problems, the bookbinding apparatus of the present invention collects trays that are sequentially fed into a bundle, and bundles that convey and set the sheets from the stacking tray means to a downstream glue application position. A conveying means; a sheet bundle holding means for holding the sheet bundle at a glue application position; a glue application roller for applying an adhesive to the sheet bundle at the glue application position; a glue application means having the glue application roller; A sheet applying means for moving the cloth means in the width direction of the sheet bundle; a control means for controlling the bookbinding operation; a detecting means for detecting the thickness of the sheet bundle; and a means for detecting the sheet size. In accordance with the thickness and the sheet size, the moving speed of the glue application moving means is varied to vary the amount of glue applied to the sheet bundle.

  Depending on the thickness and sheet size of the sheet bundle, the movement speed of the glue application moving means can be varied, the rotational speed of the glue application roller can be varied according to the thickness and sheet size of the sheet bundle, Depending on the thickness and sheet size, the movement speed of the glue application moving means in the sheet bundle and the rotation speed of the glue application roller can be varied, and the presence or absence of cutting processing depending on the thickness and sheet size of the sheet bundle By varying the moving speed of the glue application moving means and the rotational speed of the glue application roller to vary the amount of glue applied to the sheet bundle, various media and sheet sizes can be accommodated. At the same time, the cover sheet is formed with a uniform glue layer between the back of the sheet bundle end faces without leaving, providing a product that does not impair the appearance without causing irregularities and wrinkles. Rukoto can.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 shows the overall configuration of an image forming system provided with a bookbinding apparatus according to the present invention, FIG. 2 is a detailed explanatory view of a bookbinding apparatus B, and FIG. 3 is an explanatory view showing the structure of a glue storage container.

(Configuration of image forming system)
The image forming system shown in FIG. 1 includes an image forming apparatus (a copying machine shown in the figure) A, a bookbinding apparatus (bookbinding section) B connected to a paper discharge port 19 of the image forming apparatus A, and a bookbinding apparatus B. And a post-processing apparatus (post-processing unit) C disposed downstream of the sheet, and a sheet on which an image is formed by the image forming apparatus A is automatically bound by the bookbinding apparatus B or automatically by the post-processing apparatus C. Constitutes a post-processing system.

  First, the image forming apparatus A shown in FIG. 1 will be described. The image forming apparatus A includes an image forming unit 3 provided in the casing 2, an image reading device (scanner unit) 7 mounted on the upper part of the casing 2, and a document. It comprises a supply device (ADF unit) 5. An image forming unit 3 is provided in the casing 2 and forms an image on a sheet such as plain paper or an OHP sheet supplied from the paper supply unit 9. The image forming unit 3 forms an electrostatic latent image on the photosensitive drum 8 by the light irradiating unit 13, attaches toner with a developing unit, and transfers the toner onto a sheet supplied from the paper feeding unit 9. This transfer sheet is fixed by the fixing device 6 and carried out from the paper discharge port 19. In the case of double-sided printing in which images are formed on the front and back sides of a sheet, the sheet printed on one side is turned upside down by the switchback path 17 and then sent again to the photosensitive drum 8 from the circulation path 18 to be printed on the back side and discharged. Unload from 19 In addition, 12 shown in the figure is a manual sheet feeding port, for example, for supplying a thick sheet such as a cover sheet and a special sheet such as a coating sheet.

  An image reading device (scanner unit) 7 is disposed on the casing 2. The image reading device 7 scans a document placed on the platen with a photoelectric conversion element and transfers image data to the data storage unit 14 of the image forming unit 3. Further, the image reading device 7 is provided with a document supply device (ADF unit) 5 for automatically feeding a document to the platen. The document feeder 5 separates the documents set on the sheet feeding tray one by one and automatically feeds them to the platen. Such an image forming apparatus A is widely used and known in various structures. However, the image forming apparatus A is not limited to the electrostatic printing system shown in the figure, and a system such as screen printing or ink jet printing can be employed.

(Configuration of bookbinding device)
A bookbinding device B is attached to the paper discharge port 19 of the image forming apparatus A. As shown in FIG. 1, the bookbinding apparatus B includes a “stacking portion B1” that stacks and aligns sheets in a bundle, an “adhesive application portion B2” that applies an adhesive to the sheet bundle, and a sheet bundle. It is composed of a “cover binding portion B3” for binding the cover sheets, a “trimming cutting portion B4” for cutting the periphery of the binding sheet, and a “storage stack portion B5” for storing the sheet bundle.

  Then, after receiving the sheet on which the image is formed from the sheet carry-in path T1 connected to the sheet discharge port 19 of the image forming apparatus A, a series of sheets are stacked and aligned in the stacking unit B1, and then this is applied in the adhesive application unit B2. Gluing is performed on one side edge (back part) of the bundle-like sheet, and the booklet-like sheet is formed by binding together with the cover sheet at the cover binding portion B3. Thereafter, the trimming part B4 cuts and finishes the peripheral edge of the booklet sheet, and stores the booklet sheet in the storage stack part B5 so that a series of bookbinding processes are performed. The bookbinding apparatus B includes a sheet carry-in path T1 that is continuous with the paper discharge port 19 of the image forming apparatus A, an intermediate paper transport path T2 that is continuous with the carry-in path T1, and a cover sheet transport path T3. The sheets from A are sorted and conveyed. Further, a bookbinding path T4 is provided on the downstream side of the intermediate sheet conveyance path T2 via the stacking unit B1, and the bookbinding path T4 is configured to intersect with the cover sheet conveyance path T3 (the illustrated one is orthogonal). The sheet carry-in path T1 is provided with an image forming apparatus A and an inserter device that selectively supplies sheets. This apparatus is configured to prepare one or a plurality of trays, separate sheet bundles set in the tray one by one, and supply cover sheets or intermediate sheet from the sheet feeding path to the sheet carry-in path T1. Has been.

  The stacking unit B1 will be described. The stacking unit B1 is composed of a stacking tray 42 that is disposed with a vertical step formed at the sheet discharge port 40 of the intermediate paper transport path T2. The illustrated stacking tray 42 is disposed on the downstream side of the sheet discharge port 40 so as to stack and store sheets from the sheet discharge port 40 in a substantially horizontal posture. The stacking tray 42 is provided with a carry-in guide 41, a carry-in roller 45 that can be rotated forward and backward, and a rear end regulating member 43, and guides a sheet from the paper discharge port 40 onto the tray by the carry-in guide 41. 45 to carry in. Further, the rear end regulating member 43 is provided with an abutment regulating surface that abuts the rear end of the sheet to regulate the position, and in particular, the illustrated one regulates the positioning of the end surface on which the adhesive is applied to the stacked sheet bundle in a subsequent process. And the sheet is aligned with the abutting regulation surface by the reverse rotation of the carry-in roller 45.

  Although not shown in the drawing, the stacking tray 42 is provided with alignment means for aligning the side edges of the sheets, and aligns the sheet width direction by restricting the width of the sheet loaded from the sheet discharge port 40 in the conveyance orthogonal direction. This aligning means is provided with, for example, a pair of aligning members that engage with the left and right side edges of the sheet above the tray, and when aligning the sheets with the center reference, the left and right aligning members are the same toward the sheet center (reference line). It is configured to reciprocate by an amount. Further, when the sheets are aligned on the one side reference, one alignment member is fixed at the reference position, and the opposite alignment member is reciprocated.

  The stacking tray 42 configured as described above is attached to the apparatus frame so as to be movable up and down in the direction of arrow a in FIG. 1, and moves between the stacking position P1 and the lower unloading position P2. This is because the stacking tray 42 is moved from the stacking position P1 to the unloading position P2 spaced apart from the stacking position P1, and is transferred to the sheet bundle holding means 55 for unloading the sheet bundle at the unloading position P2. By arranging in this way, the apparatus can be configured compactly, and the sheet bundle aligned on the tray can be taken over by the sheet bundle holding means 55 in an aligned state. A bookbinding path T4 is provided downstream from the stacking tray 42, and a sheet bundle holding unit 55 is provided in the bookbinding path T4.

  The sheet bundle conveying means 55 deflects the sheet bundle accumulated on the accumulation tray 42 from a substantially horizontal posture to a vertical posture (direction b as viewed in FIG. 1), and an adhesive application position P3 (hereinafter referred to as glue application) in the bookbinding path T4. To the position). For this reason, the sheet bundle holding means 55 is composed of a pair of gripper members that grip the front and back of the sheet bundle, and a unit frame (not shown) that carries the gripper members and rotates approximately 90 degrees. The unit frame is supported by the apparatus frame so as to be rotatable in the direction of the arrow b in FIG. 1, and is configured to turn approximately 90 degrees by a turning motor (not shown).

  As shown in FIG. 4, main grippers 55a and 55b and sub grippers 56a and 56b are configured in the unit frame configured as described above. The main grippers 55a and 55b are formed of a long plate-like member so as to grip the paste application end face (back portion; hereinafter the same) of the sheet bundle over the entire length, and the sub grippers 56a and 56b are the main grippers at the center of the sheet bundle. The shafts 55a and 55b are pivotally supported by a rotating shaft 55c. The main gripper 55 and the sub gripper 56 are configured to be pressed and separated by a grip motor (not shown). In this way, the sheet bundle holding means 55 is composed of the main and sub grippers. When the sheet bundle is conveyed from the stacking tray 42 to the glue application position P3 on the downstream side by both grippers, the lower end edge of the sheet bundle is skewed. It is for correcting. The lower end edge (glue application end face) of the sheet bundle is abutted against the path guide plate 57 (shown in FIG. 4) of the cover sheet transport path T3 with the main grippers 55a and 55b being released, and along this path guide plate 57 The posture is corrected and gripped by the main grippers 55a and 55b. For this skew correction, the sub grippers 56a and 56b are pivotally supported by the main grippers 55a and 55b so as to be able to swing in the sheet width direction, and the path guide plate 57 is used as a reference for the sheet bundle posture for applying glue (a glue applying roller described later). In parallel with the moving direction of The path guide plate 57 is retracted from the bookbinding path T4 after skew correction.

  The sheet bundle holding means 55 is provided with a bundle thickness detecting means (not shown) for detecting the thickness of the sheet bundle. This bundle thickness detecting means is arranged on the movable member of the main grippers 55a and 55b or the sub grippers 56a and 56b, and the distance by which the gripper moves from the release position (home position) to the nip position where it abuts on the surface of the sheet bundle, for example The bundle thickness is detected by detecting with a sensor. As for the sheet size detection method, sheet size information from the image forming apparatus can be acquired, and it can be determined what sheet size is carried into the bookbinding apparatus.

  The sheet bundle thickness information and sheet size information thus detected can be used to control subsequent operations such as varying the amount of glue applied or varying the drying time of the glue according to the thickness of the sheet bundle. use.

  The sheet bundle holding means 55 is provided with temperature detecting means Th1 for detecting the temperature of the sheet bundle. This temperature detecting means is arranged inside the main grippers 55a and 55b or the sub grippers 56a and 56b, and detects the sheet bundle temperature when the gripper nips the sheet bundle.

  The temperature information of the sheet bundle detected in this way is used for control of subsequent operations such as, for example, changing the drying time of the glue that follows the temperature of the sheet bundle. Such a variable drying time of the glue may be referred to, for example, a temperature detection means (not shown) in the bookbinding apparatus.

  Next, the configuration of the adhesive application part B2 will be described. The adhesive application part B2 is disposed at the glue application position P3 of the bookbinding path T4, and an adhesive container (hereinafter referred to as an adhesive container) and the application incorporated in the container are provided. It comprises a roll and container moving means for moving the glue container along the glue application end face of the sheet bundle for coating operation. As shown in FIGS. 3 (a) and 3 (b), the glue container 66 is composed of a container body 66a for storing a hot melt adhesive and an application roll 67, and the glue container 66 is filled with a solid adhesive. The adhesive is heated and melted and applied to the sheet bundle by the application roll 67. For example, a heater (heating means) 66b such as an electric heater is built in the container body 66a to melt and melt the adhesive in the container. 66c shown in the figure is a glue temperature sensor, and the container body 66a includes a rotating body (not shown) that stirs the adhesive, and current is supplied to the heater 66b based on the temperature detected from the sensor. The stirring rotator acts to make the adhesive temperature in the container uniform. The coating roll 67 is made of impregnating heat-resistant rubber, and is rotatably supported on the container body 66a by a rotating shaft 67a. A roll rotation motor MR is connected to the rotation shaft 67a. The glue container 66 configured in this manner is fitted and supported by guide rails 68 provided on the apparatus frame, and the guide rails 68 extend along the glue application end surface S1 of the sheet bundle held by the sheet bundle holding means 55 described above. It is arranged in parallel with this. As described above, the glue container 66 containing the application roll 67 is supported so as to reciprocate along the glue application end face S1 of the sheet bundle, and is fixed to a timing belt 69 stretched along the guide rail. A shift motor MS is connected to the timing belt 69. Accordingly, the guide rail 68, the timing belt 69, and the shift motor MS constitute a “container moving means”.

  The glue container 66 includes a coating area L1 for applying glue to the glue application end surface S1 of the sheet bundle, and a retracting area L2 that can be moved to a retracted position (home position Hp in the drawing) spaced apart from the area L1. It is configured as follows. Then, the shift motor MS reciprocates between the home position Hp, the standby position Wp, and the return position Rp. At the home position Hp, the glue container 66 is located when the apparatus is activated, and the suction means 70 is disposed at the home position Hp. The standby position Wp positions the glue container 66 when glue is applied to subsequent sheet bundles when glue is continuously applied. For this reason, the standby position Wp is preferably laid out in the vicinity of the paste application region L1. Similarly, the return position Rp is preferably arranged in the vicinity of the paste application region L1.

When the glue container 66 moves from the standby position Wp to the return position Rp, glue may be applied to the glue application end surface S1 of the sheet bundle by the application roll 67, but the illustrated one is applied in the forward path and the return path of the glue container 66. I try to cloth. That is, in the forward path (movement from Wp to Rp), the coating roll 67 presses and separates the end surface S1 of the sheet bundle, and in the backward path (movement from Rp to Wp), the coating roll 67 contacts the glue application end surface S1 of the sheet bundle. Apply glue. At this time, the amount of glue applied is varied so that the amount of application is large when the sheet bundle is thick and small when the sheet bundle is thin.
Next, a method for changing the amount of glue applied will be described in detail.

  First, a method for changing the amount of paste applied by changing the moving speed of the container moving means will be described. When the moving speed of the container main body is slowed, the time during which the sheet bundle is in contact with the glue at a certain position becomes long, and the amount of glue soaked into the sheet bundle increases. Therefore, the amount of glue applied increases. On the contrary, when the moving speed of the container main body is increased, the time during which the glue is in contact with the sheet bundle at a certain position is shortened, and the amount of the glue soaked into the sheet bundle is reduced. Therefore, the amount of glue applied is reduced. From the above, when the moving speed of the container main body is slowed down, the amount of paste applied increases, and when the moving speed of the container main body is increased, the amount of paste applied decreases.

  Next, a method for changing the amount of paste applied by changing the rotation speed of the application roll will be described.

  When the rotation speed of the coating roll is slowed down, the glue tends to adhere to the coating roll due to the viscosity of the glue, the amount of glue rising increases as shown in FIG. 7B, and the glue adhesion area is widened with respect to the sheet bundle. . Therefore, the amount of glue applied increases. On the other hand, if the number of rotations of the application roll is increased, the adhesive becomes difficult to adhere to the application roll due to the viscosity of the adhesive, and the amount of increase in the adhesive decreases as shown in FIG. Becomes narrower. Therefore, the amount of glue applied is reduced. From the above, when the rotation speed of the coating roll is slowed down, the amount of glue applied increases, and when the rotation speed of the coating roll is increased, the glue coating amount decreases. However, this relationship varies depending on the characteristics and viscosity of the glue, and in some cases, the relationship may be reversed.

  Next, a method for changing the amount of glue applied by changing the moving speed of the container moving means in the sheet bundle and the rotating speed of the applying roll will be described.

  First, the case where the moving speed of the container moving means is varied will be described.

  FIG. 6 is a diagram illustrating the positional relationship between the sheet bundle and the container main body. First, when the container main body is moved from L3 to L5 by the container moving means and the glue application operation is performed by the application roll, the container main body moved from L3 moves to the G1 position at a speed slower than the normal application speed to apply the glue. I do. When the container body moves to the G1 position, the glue is applied between L4 at the normal application speed. Then, the movement from the G2 position to L5 is performed at a speed higher than the normal application speed, and the glue application operation is completed.

  From the L3 to the G1 position, the glue is applied at a speed slower than the normal application speed in order to stabilize the glue level and ensure that the glue is infiltrated into the sheet bundle. From the G1 position to the G2 position (between L4), glue application starts and the glue liquid level is stable, so that glue application is performed at the normal application speed. Then, when applying glue at a normal application speed from the G2 position to L5, glue sagging occurs from the sheet bundle, and an operation of scrubbing the glue is necessary. Therefore, the end of the sheet bundle moves at a speed faster than the normal application speed, and the glue is scraped off.

  Next, a case where the rotation speed of the coating roll is varied will be described.

  First, when the container main body is moved from L3 to L5 by the container moving means and the glue application operation is performed by the application roll, the container main body moved from L3 is glued at a rotational speed slower than the normal roll rotation speed to the G1 position. Do cloth. When the container body moves to the G1 position, the glue is applied between L4 at the normal roll rotation speed. Then, the movement from the G2 position to L5 is performed at a rotational speed faster than the normal roll rotational speed, and the glue application operation is completed.

  From the L3 to the G1 position, the glue is applied at a rotation speed slower than the normal roll rotation speed in order to stabilize the glue liquid level and reliably apply the glue to the sheet bundle. From the G1 position to the G2 position (between L4), the glue application starts and the glue liquid level is also stable, so the glue application is usually performed at the roll rotation speed. When glue is applied at a normal roll rotation speed from the G2 position to L5, glue sag occurs from the sheet bundle, and an operation of scrubbing the glue is necessary. Therefore, at the end of the sheet bundle, the glue is applied at a rotation speed faster than the normal roll rotation speed, and the glue is scraped off.

  Next, a method for varying the amount of glue applied by varying the moving speed of the container moving means and the rotating speed of the coating roll depending on the presence or absence of the cutting process will be described.

  Normally, in case binding where a sheet bundle is wrapped with a cover sheet to create a product, the corner end of the sheet bundle is the most easily peeled, and the corner end of the sheet bundle needs to be securely coated with glue. .

  First, when there is a cutting process, the glue application start corner edge and the glue application end corner edge are trimmed by the cutting process, so even if the glue is scraped off between the G2 position and L5 as usual. Good. However, when the cutting process is not performed, the paste application start corner end and the paste application end corner end remain without being trimmed. Therefore, if the glue is scraped off between the G2 position and the L5 as usual, the glue application end corner end is insufficient in the glue application amount, and the cover sheet is likely to be peeled off. In order to prevent this, if the cutting process is not performed, the glue application amount is once increased between the G2 position and L5 at a speed slower than the normal application speed or at a speed lower than the normal roll rotation speed, and then the glue is scraped off. There is a need to do.

  Next, the configuration of the cover binding portion B3 will be described. The bookbinding path T4 is provided with a cover binding position P4 on the downstream side of the glue application position P3, and the cover sheet conveying path T3 is arranged in a direction orthogonal to the bookbinding path T4 at the cover binding position P4. Back folding plates 58a and 58b and a back plate 59 are arranged at the cover binding position P4 located at this intersection. The back folding plates 58a and 58b are composed of a pair of left and right plate-like members across the cover sheet conveyance path T3, and are provided so as to be movable between positions that are separated from each other (retracted positions) and are in contact with each other. It is connected to the press motor.

  The back plate 59 is disposed so as to be movable between a retracted position retracted from the cover sheet conveyance path T3 and an operating position entering the path, and is connected to an operating means (not shown) such as an electromagnetic solenoid. Yes. Therefore, the sheet bundle to which the adhesive is applied by the application roll 67 is conveyed to the cover binding position P4 by the sheet bundle holding means 55. At this time, the cover sheet is already fed and set from the cover sheet conveyance path T3 to the cover binding position P4. In this configuration, the sheet bundle is transferred from the bookbinding path T4 to the cover binding position P4 with the back folding plates 58a and 58b positioned at the retracted position and the backrest plate 59 positioned at the operating position.

  Then, the sheet bundle is joined to the cover sheet in an inverted T shape. At this time, the back plate 59 supports the cover sheet as a backup. Next, when the back folding plate 58 is moved from the retracted position to the operating position, the left and right back folding plates 58a and 58b press-mold the back portion of the cover sheet. In this process, the adhesive applied to the sheet bundle is solidified to bind the cover sheet and the sheet bundle.

  Here, as the sheet bundle becomes thicker, the amount of glue applied increases, and the cutting operation is performed before the glue is solidified. Therefore, based on the thickness information obtained by the sheet thickness detecting means described above, The solidification time when the sheet and the sheet bundle are bound together is determined. As for the solidification time, an experiment is performed, and the solidification time is determined by detecting the thickness of the sheet bundle based on the relationship between the thickness of the sheet bundle obtained by the experiment and the solidification time. The solidification time may be determined according to the temperature of the temperature detecting means Th1. Further, it is preferable to determine the solidification time based on the detection of the sheet bundle thickness and the temperature of the temperature detection means Th1.

  Next, the configuration of the trimming cutting part B4 will be described. As described above, the sheet bundle that is bound together with the cover sheet in a booklet form is sent to the folding roll 60 on the downstream side by the sheet bundle holding means 55. At this time, the back plate 59 and the back folding plates 58a and 58b are respectively retracted to the retracted positions. In the bookbinding path T4, a cutting position P5 is provided on the downstream side of the cover binding position P4, and a cutting means 61 is disposed. The cutting unit 61 includes a rotary table 62, a cutting edge press unit 63, and a cutting blade 64, which are sequentially arranged on the downstream side of the bookbinding path T4. The rotary table 62 grips the sheet bundle sent from the folding roll 60 and deflects the direction, and simultaneously conveys the lower end edge of the sheet bundle so as to form a cutting margin set in advance at the cutting position P5. . Therefore, the rotary table 62 is provided with a turning motor and a lifting motor.

  The cutting position P5 includes a cutting blade 64 and a cutter motor Mc that drives the cutting blade 64, and cuts a sheet bundle by a predetermined amount. The illustrated cutting blade 64 is constituted by a flat blade cutter, and is supported by the apparatus frame so as to be movable between a standby posture retracted from the bookbinding path T4 and the cutting posture shown in FIG. 2, and is reciprocated by a cutter motor Mc. The sheet bundle is cut by the above.

  Next, the storage stack portion B5 will be described. On the downstream side of the cutting blade 64, a stacker 65 for accommodating a sheet bundle and a waste disposal tray 66 are disposed. The cut sheet bundle is stored in a box-shaped stacker 65 by a paper discharge roller 67. In addition, a waste disposal tray 66 is provided adjacent to the stacker 65, and accommodates paper scraps cut by the upstream cutting blade 64. Reference numeral 100 denotes a sweeper member that swings so as to guide paper scraps from the cutting blade 64 to a waste disposal tray, and includes a drive motor (not shown).

  As mentioned above, although preferable embodiment was described to this invention, this invention is not limited to these embodiment, In the range which does not deviate from the summary of this invention, an appropriate change is possible. .

1 is an overall configuration diagram of an image forming system including a bookbinding apparatus according to the present invention. FIG. 2 is an explanatory diagram illustrating a main part of a bookbinding apparatus in the system of FIG. 1. The internal structure of the adhesive agent storage container concerning this invention is shown, (a) is the sectional drawing, (b) is sectional drawing different from (a). FIG. 3 is an explanatory diagram of sheet bundle holding means in the system of FIG. 1. Explanatory drawing of the shift structure which moves the adhesive agent storage container of FIG. 4 along a sheet | seat bundle. Explanatory drawing showing the relationship between a container main body position and paste application amount. The amount of glue rising on the coating roll is shown, (a) is a small amount of rise, (b) is an explanatory diagram when the amount of rise is large.

A Image forming apparatus B Bookbinding apparatus P1 Accumulation position P2 Unloading position P3 Adhesive application position (glue application position)
S sheet or sheet bundle T1 sheet carry-in path T2 middle sheet transport path T3 cover sheet transport path T4 bookbinding path Th1 to Th3 temperature sensor 42 stacking tray 55 sheet bundle holding means 61 cutting means 66 glue container 66a container main body 66b heater (heating means) )
66c Glue temperature sensor 67 Coating roll 70 Suction means MR roll rotation motor MS shift motor

Claims (4)

A stacking tray means for aligning sequentially fed sheets in a bundle, a bundle transporting means for transporting and setting sheets from the stacking tray means to a downstream glue application position, and holding the sheet bundle at the glue application position Sheet bundle holding means, glue application roller for applying adhesive to the sheet bundle at the glue application position, glue application means having the glue application roller, and glue application for moving the glue application means in the width direction of the sheet bundle The glue application movement according to the thickness of the sheet bundle and the sheet size has a moving means, a control means for controlling the bookbinding operation, a detection means for detecting the thickness of the sheet bundle, and a means for detecting the sheet size. A bookbinding apparatus characterized in that the moving speed of the means is varied to vary the amount of glue applied to the sheet bundle. 2. The bookbinding apparatus according to claim 1, wherein the rotational speed of the glue application roller is varied in accordance with the thickness and the sheet size of the sheet bundle to vary the amount of glue applied to the sheet bundle. According to the thickness of the sheet bundle and the sheet size, the movement speed of the glue application moving means in the sheet bundle and the rotation speed of the glue application roller can be varied to vary the amount of glue applied to the sheet bundle. The bookbinding apparatus according to claim 1 or 2, characterized in that
A stacking tray means for aligning sequentially fed sheets in a bundle, a bundle transporting means for transporting and setting sheets from the stacking tray means to a downstream glue application position, and holding the sheet bundle at the glue application position Sheet bundle holding means, glue application roller for applying adhesive to the sheet bundle at the glue application position, glue application means having the glue application roller, and glue application for moving the glue application means in the width direction of the sheet bundle There are a moving means, a cutting means for cutting the top surface, the ground, and the fore edge of the sheet bundle, a control means for controlling the bookbinding operation, a detecting means for detecting the thickness of the sheet bundle, and a means for detecting the sheet size. Depending on the thickness of the sheet bundle and the sheet size, the movement speed of the glue application moving means and the rotation speed of the glue application roller can be varied depending on the presence or absence of the cutting process, and the amount of glue applied to the sheet bundle can be varied. Special to do And the bookbinding apparatus.

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