JP2008105316A - Bookbinding apparatus and image formation device with bookbinding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bookbinding apparatus changing a number of streaks marked on sheet materials according to a stiffness of the sheet materials and binding a good looking brochure with no opening. <P>SOLUTION: The bookbinding apparatus has a sheet streaking device 55 for streaking sheet materials S and folding rollers 45, 46 bundling the streaked sheet materials S and binding the brochure by bundling and folding along the streaks, the sheet streaking device 55 is constituted so as to be able to change the number of streaks marked on the sheet materials in every sheet material constituting the brochure. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a bookbinding apparatus that performs bookbinding by performing saddle stitching processing on a sheet material, and to an image forming apparatus including the bookbinding apparatus.

  2. Description of the Related Art Conventionally, a saddle stitch bookbinding apparatus that produces a booklet by bundling a center portion of a sheet bundle that has been saddle-stitched, and an image forming apparatus including the same are proposed. However, a booklet bound by such an apparatus, for example, when a booklet is bound using a sheet material with high rigidity, the booklet has a curved finish near the back, and the booklet opens and looks unattractive. (Figs. 1 (a) and (b)).

  The problem is that when a sheet material, such as cardboard, which is hard and difficult to bend is used for the booklet, or when a sheet material with a low water content is used in a low humidity environment, the sheet material has a gap (direction of fiber flow). This is noticeable when the sheet material is folded in a perpendicular direction.

  However, as a solution to this problem, an apparatus shown in FIGS. 2A and 2B has been proposed (Patent Document 1).

  The apparatus shown in FIGS. 2A and 2B includes gripping means 102 and 103 that sandwich and fix adjacent portions of the back of the booklet, and a pressure roller 104 that applies pressure along the back of the booklet. Prepare.

The booklet 101 is folded and fixed by the gripping means 102 and 103 so that the back portion of the booklet 101 protrudes from the gripping means 102 and 103 by a predetermined amount. The portion is scanned by the pressure roller 104 to apply pressure to the back portion. By doing so, the back portion of the booklet 101 can be flattened, and as shown in FIG. 2C, it is possible to bind a booklet that does not open and looks good.
JP 2001-260564 A

  However, in the case of the above prior art, the following problems occur.

  For example, when the booklet 101 is thin, if the pressure is applied to the back cover portion by the pressure roller 104 to flatten the back portion, the flat portion is flattened as shown by the hatched portion in FIG. There was a problem that wrinkles A were generated in the back cover part and the appearance of the booklet deteriorated.

  SUMMARY An advantage of some aspects of the invention is that it provides a bookbinding apparatus capable of binding a booklet that does not open and has a good appearance, or an image forming apparatus including the bookbinding apparatus.

  In order to achieve the above object, in the bookbinding apparatus of the present invention, the sheet creasing means for scoring the sheet material and the crooked sheet material are bundled and folded along the streaks to produce the booklet. A sheet bundle folding means for bookbinding, wherein the sheet creasing means is capable of changing the number of lines to be applied to the sheet material for each sheet material constituting the booklet.

Further, in the bookbinding apparatus of the present invention, a sheet creasing unit capable of attaching a plurality of lines to the sheet material and a bundle of the lined sheet materials, which are bundled and folded along the lines A sheet bundle folding means for binding the booklet, wherein the sheet creasing means is capable of changing the spacing of the stripes for each sheet material constituting the booklet.

  Further, in the bookbinding apparatus of the present invention, the sheet creasing means for binding the sheet material and the sheet bundle folding for binding the booklet by bundling the lined sheet material in a bundle. And the sheet creasing means is configured to be capable of changing the width of the streaks applied to the sheet material for each sheet material constituting the booklet.

Further, in the image forming apparatus of the present invention, an image forming unit that forms an image on a sheet material,
The bookbinding apparatus is provided.

  As described above, according to the present invention, the number of streaks attached to the sheet material can be changed according to the rigidity of the sheet material constituting the booklet, so that a booklet having a good appearance without opening can be bound. A bookbinding apparatus can be provided.

  In addition, according to the present invention, a plurality of lines can be attached to the sheet material by changing the interval between the lines according to the rigidity of the sheet material constituting the booklet, so that a booklet having a good appearance without opening can be bound. Bookbinding apparatus can be provided.

  Further, according to the present invention, since the width of the line can be changed according to the rigidity of the sheet material constituting the booklet, the line can be added to the sheet material. An apparatus can be provided.

  Further, according to the present invention, it is possible to provide an image forming apparatus including a bookbinding apparatus capable of binding an attractive booklet and an image forming apparatus main body.

  Preferred embodiments of the present invention will be exemplarily described in detail below with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention unless otherwise specified.

(First embodiment)
3 to 12 show a first embodiment of a bookbinding apparatus according to the present invention and an image forming apparatus provided with the bookbinding apparatus. Hereinafter, a first embodiment of the present invention will be described with reference to these drawings.

(Configuration of the entire device)
FIG. 3 is a schematic configuration diagram of a bookbinding apparatus and an image forming apparatus including the bookbinding apparatus according to the first embodiment of the present invention.

  The image forming apparatus according to the first embodiment of the present invention includes an image forming unit 12 that forms an image on a sheet material, and a bookbinding that performs bookbinding by using the sheet material on which an image is formed in the image forming unit 12 as a sheet bundle. The apparatus 2 is provided. The image forming unit 12 is housed in the image forming apparatus main body 1.

The image forming apparatus main body 1 includes a platen glass 21 serving as a document placement table, a document feeding device 23 that feeds a document to the platen glass 21, a light source / lens system 22, a feeding unit 11, and an image forming unit 12. A fixing device 13 and a discharge roller pair 17. The image forming unit 12 includes a cylindrical photosensitive drum 24 and a developing device 25. A CPU circuit unit 905 is provided as a control device that controls the image forming apparatus main body 1.

  Further, the image forming apparatus main body 1 includes an operation unit 15. The operation unit 15 includes a plurality of keys for setting various functions relating to image formation and a display unit for displaying information indicating a setting state. The operation unit 15 outputs a key signal corresponding to the operation of each key to the CPU circuit unit 905 and the CPU. Based on the signal from the circuit unit 905, the corresponding information is displayed on the display unit. The CPU circuit unit 905 controls the entire image forming apparatus based on these settings.

  Similarly, various setting information is input to the CPU circuit unit 905 from an external computer (external PC) 910, and the entire image forming apparatus is controlled based on the information. Further, the feeding unit 11 is provided with feeding cassettes 11 a to 11 d for storing sheet materials so as to be detachable from the image forming apparatus main body 1.

On the other hand, the bookbinding apparatus 2 includes conveying rollers 31 to 39, sheet material leading edge detection sensors 50 and 53, a creasing device 55 as a sheet creasing unit, a stapler 42, and a thrust plate 43 that constitutes a sheet bundle folding unit. And folding rollers 45 and 46. A bookbinding device control unit 501 is provided as a control device that controls the bookbinding device 2.

  In the first embodiment, the CPU circuit unit 905 on the image forming apparatus main body 1 side and the bookbinding apparatus control unit 501 that controls the bookbinding apparatus 2 exchange information to control the bookbinding apparatus 2. It is configured. However, the bookbinding apparatus control unit 501 may be integrated into the CPU circuit unit 905 on the image forming apparatus main body 1 side.

(Description of operation of image forming apparatus main body)
Next, the operation of the image forming apparatus main body 1 according to the first embodiment of the present invention configured as described above will be described with reference to FIG.

  When a feeding signal is input to the image forming apparatus main body 1, the sheet material is fed from the cassettes 11 a to 11 d of the feeding unit 11. On the other hand, light reflected from a light source on a document placed on the platen glass 21 is read by a reading sensor (for example, a CCD) via a light source / lens system 22. Thereafter, the read light is digitally processed as an image signal, and is irradiated onto the surface of the photosensitive drum 24 from an irradiation unit (not shown).

  The photosensitive drum 24 is charged in advance by a primary charger, and an electrostatic latent image is formed on the surface of the photosensitive drum 24 when irradiated with light. Next, a toner agent is supplied to the electrostatic latent image from the developing unit 25 that constitutes the image forming unit 12 together with the photosensitive drum 24, and the electrostatic latent image is visualized as a toner image on the surface of the photosensitive drum 24.

  On the other hand, the sheet material S fed from the feeding unit 11 is corrected in skew by the registration roller 26 and fed to the image forming unit 12 at a timing. In the image forming unit 12, the toner image formed on the surface of the photosensitive drum 24 is transferred to the sheet material S.

  On the sheet material S on which the image is formed in the image forming unit 12, the transfer image is permanently fixed in the fixing device 13. Then, the sheet material S on which the image is fixed is discharged from the image forming apparatus main body 1 to the bookbinding apparatus 2 by the discharge roller pair 17.

  Further, at this time, the paper may be sent to the reverse conveying roller pair 20 by the flapper 18 and may be discharged from the image forming apparatus main body 1 by the discharge roller pair 17 after being reversed.

(Explanation of bookbinding operation)
Next, the operation of the bookbinding apparatus 2 in the first embodiment of the present invention configured as described above will be described with reference to FIGS. 3 and 4 to 9.

  The sheet material S discharged from the image forming apparatus main body 1 is conveyed into the bookbinding apparatus 2 by the conveying rollers 31 to 38. When the sheet material leading edge detection sensor 50 detects the leading edge of the sheet material S in the conveyance direction, the conveyance roller 38 sandwiching the sheet material S is decelerated and enters the nip of the skew correction roller 51 that is stopped. The tip of the sheet material S is abutted.

  When the leading edge of the sheet material S comes into contact with the nip of the skew correction roller 51, the conveyance roller 38 further rotates by a predetermined amount to convey the sheet material S and form a loop of the sheet material S in the loop space 52. When the loop is formed, the conveying roller 38 stops (FIG. 4).

  Then, the skew feeding correction roller 51 rotates to sandwich and convey the sheet material S, whereby the skew feeding of the sheet material S is corrected. The sheet material S whose skew has been corrected is further conveyed, and the leading edge in the conveying direction is detected by the sheet material leading edge detection sensor 53. When the leading edge is detected, the sheet material S is conveyed by a predetermined amount and stopped (FIG. 5).

  Then, at the position where the sheet material S stops, the sheet material S is scored by the creasing device 55. When the scoring is completed, the sheet material S is transported again, is positioned by the stopper 44 so that the central portion of the sheet material S is at the binding position of the stapler 42, and stops inside the transport path 41. At this time, the sheet material S is aligned in a direction perpendicular to the conveying direction by a lateral alignment plate (not shown). The configuration and operation of the scoring device 55 will be described later.

  The above process is repeated, and the sheet material S that is scored by the scoring device 55 is sequentially conveyed into the conveyance path 41, and a sheet bundle 101 is formed in the conveyance path 41 (FIG. 6). Further, at this time, the sheet material is conveyed in order from the inner side of the booklet, and finally the sheet material that becomes the cover of the booklet is stacked on the folding rollers 45 and 46 side.

  When the sheet bundle 101 is formed inside the conveyance path 41, the sheet bundle 101 is saddle stitched at the center of the sheet bundle 101 by the stapler 42. Then, the stopper 44 moves so that the center portion (the bound position) of the saddle stitched sheet bundle 101 is located at the position of the abutting plate 43 (FIG. 7).

  Then, the sheet bundle 101 is projected at the center by the pushing plate 43, and the center portion of the sheet bundle 101 is pushed as it is into the nip of the folding rollers 45 and 46, and is folded while being pressed by the folding rollers 45 and 46 ( FIG. 8).

  Then, the sheet bundle 101 bundled and folded by the folding rollers 45 and 46 is conveyed by the bundle conveying rollers 47 and 48 and discharged onto the discharge tray 49 (FIG. 9).

(Description of control device)
Next, the control configuration of the image forming apparatus main body 1 and the bookbinding apparatus 2 in the first embodiment of the present invention will be described with reference to FIG. FIG. 16 is a block diagram illustrating a control configuration of the CPU circuit unit 905 that controls the image forming apparatus main body 1 and the bookbinding apparatus circuit unit 501 that controls the bookbinding apparatus 2.

  The CPU circuit unit 905 includes a CPU (not shown), a ROM 906, and a RAM 907, and comprehensively controls the blocks 901, 902, 903, 904, 15, and 501 by a control program stored in the ROM 906.

The RAM 907 temporarily stores control data and is used as a work area for arithmetic processing associated with control. The document feeder control unit 901 controls driving of the automatic document feeder 23 based on an instruction from the CPU circuit unit 905. The image reader control unit 902 performs drive control on the light source / lens system 22 and the like, and transfers RGB analog image signals output from the light source / lens system 22 to the image signal control unit 903.

  The image signal control unit 903 converts each RGB analog image signal from the light source / lens system 22 into a digital signal, performs each process, converts the digital signal into a video signal, and outputs the video signal to the printer control 904. The processing operation by the image signal control unit 903 is controlled by the CPU circuit unit 905.

  The operation unit 15 includes a plurality of keys for setting various functions relating to image formation and a display unit for displaying information indicating a setting state, and outputs a key signal corresponding to the operation of each key to the CPU circuit unit 905. Based on the signal from the CPU circuit unit 905, the corresponding information is displayed on the display unit. Similar setting information is also input to the CPU circuit unit 905 from the external PC 910.

  The bookbinding apparatus control unit 501 is mounted on the bookbinding apparatus 2 and exchanges information with the CPU circuit unit 905 on the image forming apparatus main body 1 side via a communication IC (IPC) (not shown), thereby controlling the drive of the bookbinding apparatus 2 as a whole. I do.

  The bookbinding apparatus control unit 501 includes a CPU 601, a ROM 602, and a RAM 603, and controls various actuators and various sensors such as a conveyance roller drive motor and a creasing apparatus drive motor 65 by a control program stored in the ROM 602. The RAM 603 temporarily holds control data and is used as a work area for arithmetic processing accompanying control, and temporarily holds values such as the position of the sheet material relative to the scoring device 55 and the sheet order in the sheet bundle. .

(Configuration of scoring device)
Next, with reference to FIG. 10, the structure of the scoring apparatus 55 in the 1st Embodiment of this invention is demonstrated. FIG. 10 is a view of the scoring device 55 viewed from the direction of arrow A in FIG.

  As shown in FIG. 10, the scoring device 55 includes a scoring blade 59, and slides in the width direction of the sheet material S together with the slide table 56 while the scoring blade 59 is pressed in the direction of the scoring base 54. This is a device for forming a streak in the sheet material S.

  The creasing blade 59 is attached to the arm 57 so as to be rotatable about the support shaft 61. The arm 57 is attached to the slide table 56 so as to be rotatable about the support shaft 58. The arm 57 is pressed by the tension spring 60 so that the creasing blade 59 is pressed against the creasing base 54.

  The slide table 56 is supported so as to be slidable along the slide shafts 67a and 67b. The slide shafts 67a and 67b are fixed to the side plates 69a to 69d of the bookbinding apparatus 2 by mounting bases 68a and 68b.

  The slide table 56 is fixed to the drive belt 63 by an attachment member 62. The drive belt 63 is driven by an idler pulley 66 and a drive pulley 64 of a drive motor 65, and is configured to be capable of reciprocatingly sliding between the front side and the back side of the bookbinding apparatus 2 while the creasing blade 59 presses against the creasing base 54. ing. Here, the near side of the bookbinding apparatus 2 refers to the side where the user stands on the operation unit 15 provided in the image forming apparatus main body 1, that is, the front side of the apparatus. On the other hand, the back side refers to the back side of the apparatus.

(Operation of the scoring device)
Next, with reference to FIGS. 11A to 11C, the operation of the scoring device 55 in the first embodiment of the present invention will be described. FIG. 11 is a view of the scoring device 55 as viewed from the direction of arrow B in FIG. 3. FIG. 11 (a) shows the creasing operation of the sheet material that is the contents of the booklet, and FIGS. The creasing operation of the sheet material that becomes the cover of the booklet is shown.

  As shown in FIG. 11 (a), when creasing the sheet material S (length L) which is the contents of the booklet, the creasing position of the sheet material S by the creasing device 55 is the sheet material S. Is positioned by the skew correction roller 51 so as to be at a position of L / 2 from the tip of the head.

  When the sheet material S is positioned at a predetermined position by the skew feeding correction roller 51, the creasing device 55 slides from the back side to the front side of the bookbinding device 2 (or vice versa), thereby adding the streak Q. It is done. The lined sheet material S is conveyed to the stopper 44 by the skew correction roller 51 and the conveyance roller 39.

  In this way, when the creasing of the sheet material that is the contents of the booklet is performed, the sheet material that is finally the cover of the booklet is conveyed and the creasing is performed. In the sheet material used as the cover of the booklet, the first streak N1 is crooked at a position L / 2-N from the front end of the sheet material, and the second streak N2 is crept at a position L / 2 + N from the front end of the sheet material. The

  When the scoring device 55 shown in FIG. 11 is used to perform creasing and saddle stitching on the sheet material (length L in the longitudinal direction) constituting the booklet, as shown in FIG. A booklet having a thickness of 2N and a booklet length L / 2 can be bound.

  Here, in the first embodiment, N = (n−1) T is set when the sheet thickness is T and the number of sheets forming the booklet is n. The setting method is not limited to this.

  The sheet material S, which has been creased in the above-described configuration, is saddle-stitched by the stapler 42 in the above-described process, bent by the folding rollers 45 and 46, and bound as a booklet having a good appearance with few openings as shown in FIG. Is done.

  As described above, in the first embodiment of the present invention, the number of streaks formed on the sheet material S serving as the cover of the booklet is greater than the number of streaks formed on the sheet material S serving as the contents of the booklet. It comprised so that it might become.

  For this reason, even when the sheet material S having high rigidity is used for the cover of the booklet as compared with the sheet material S that is the contents of the booklet, the sheet material S that becomes the cover of the booklet can be reliably folded. This makes it possible to bind a booklet that looks good with little opening.

  In the first embodiment, the number of streaks formed on the sheet material S serving as the cover of the booklet is greater than the number of streaks formed on the sheet material S serving as the contents of the booklet. However, the creasing operation in the present invention is not limited to this.

  For example, when the sheet material S that is the contents of the booklet is more rigid than the sheet material S that is the cover of the booklet, the number of lines formed on the sheet material S that is the contents of the booklet is determined as the cover of the booklet. What is necessary is just to increase more than the number of the lines of the sheet material S used.

Moreover, you may change the number of the lines formed for every sheet material. For example, when a sheet material that is the contents of a booklet is creasing, if there is a sheet material with a high rigidity, the number of lines larger than the number of lines formed on the other sheet material It is also possible to form it.

  As described above, since the number of lines formed on the sheet material can be changed according to the rigidity of the sheet material, it is possible to bind a booklet having a good appearance without opening as shown in FIG. In addition, if the stiffness of the sheet material that is the contents of the booklet is high, increasing the number of lines will form a booklet that does not open, but the outer sheet material will be the contents regardless of the rigidity of the sheet material If the same number of lines as the sheet material is added, the appearance will be improved.

(Second Embodiment)
13 and 14 show a second embodiment of a bookbinding apparatus according to the present invention and an image forming apparatus provided with the bookbinding apparatus. Hereinafter, a second embodiment of the present invention will be described with reference to these drawings.

  In the first embodiment of the present invention, the number of streaks can be changed for each sheet material constituting the booklet. On the other hand, the second embodiment is characterized in that, in a configuration in which a plurality of streaks are formed in all the sheet materials constituting the booklet, the spacing between the streaks is changed for each sheet material.

  Further, as described above, the second embodiment of the present invention is different from the first embodiment in terms of the creasing operation, but the other configurations are not different from the first embodiment. Therefore, the description of the same components is omitted.

  That is, (the entire apparatus configuration), (the description of the operation of the image forming apparatus main body), (the description of the operation of the bookbinding apparatus), (the description of the control apparatus), and (the configuration of the scoring apparatus) are the first embodiment. Therefore, the description thereof is omitted, and only the following (description of scoring operation) will be described.

(Explanation of creasing action)
FIG. 13 is a view of a state in which a streak is formed on the sheet material S by the scoring device 55 according to the second embodiment, as viewed from the direction of arrow B in FIG. FIG. 13A shows a state when the first streak N1 is formed on the sheet material S, and FIG. 13B shows a state when the second streak N2 is formed on the sheet material S. . FIG. 14 shows a cross section of a booklet bound by a bookbinding apparatus according to the second embodiment.

  As described above, the second embodiment of the present invention is characterized in that a plurality of streaks are formed for each sheet material S, and the spacing between the streaks formed on each sheet material is changed. In order to make the description easier to understand, a case where two lines are formed for each sheet material constituting the booklet will be described here. However, the number of lines formed on the sheet material is not limited to this, and the number of lines formed may be two or more.

  Hereinafter, the length of the sheet material in the longitudinal direction is L, the interval between the stripes formed on the innermost sheet material of the booklet is 2M, the thickness of the sheet material constituting the booklet is T, the first stripe is N1, The description will be made assuming that the second line is N2.

  As shown in FIG. 14, when the interval between the stripes formed on the sheet material located on the innermost side of the booklet is 2M, the interval between the stripes formed on the sheet material located on the outermost side is 2M. Therefore, 2M + 2T = 2 (M + T) is obtained because it is sufficient to add two thicknesses T of the sheet material positioned at the position.

  Similarly, the interval between the streaks formed on the sheet material positioned on the outer side of one sheet is obtained by adding two sheet material thicknesses T to the interval between the streaks formed on the sheet material positioned on the inner side of one sheet. Well, 2 (M + T) + 2T = 2 (M + 2T).

  That is, the interval between the stripes formed on the sheet material located on the n outer side from the sheet material located on the innermost side of the booklet is set to the interval 2M between the stripes formed on the innermost sheet material (of the sheet material). It can be obtained by adding the number n-1) × (2T). That is, the interval between the streaks formed on the sheet material located on the n outer side from the sheet material located on the innermost side of the booklet is 2 (M + (n−1) T).

  Then, creasing is performed for each sheet material by the scoring device 55 so that the spacing between the streaks formed in each sheet material S constituting the booklet becomes the spacing described above.

  That is, when the first streak N1 is crooked from the sheet material S located on the innermost side of the booklet to the sheet material S located on the n outer side, the creasing position of N1 is changed from the front end portion of the sheet material S to L What is necessary is just to position a sheet | seat material so that it may become the position of / 2- (M + (n-1) T) (FIG.13 (a)).

  Further, when the second line N2 is subsequently lined, the sheet material S is conveyed by a predetermined amount, and the lined position of N2 is L / 2 + (M + (n-1) from the rear end of the sheet material S. What is necessary is just to position the sheet | seat material S so that it may become a position of T) (FIG.13 (b)).

  For example, when creasing the sheet material (n = 1) located on the innermost side of the booklet, the position of N2 is set so that the position of N1 is L / 2-M from the leading end of the sheet material. What is necessary is just to position a sheet material so that it may become L / 2 + M from the rear-end part of material.

  Similarly, when scoring the sheet material S (n = 2) located on the outermost side from the innermost side of the booklet, the position of N1 is L / 2− (M + T), from the leading edge of the sheet material S, The sheet material S may be positioned so that the position of N2 is L / 2 + (M + T) from the rear end portion of the sheet material S.

  Further, when creasing the sheet material S (n = k), which is the outermost cover of the booklet, N1 is L / 2− (M + (k−1) T), N2 from the leading end of the sheet material S. Is positioned from the rear end of the sheet material such that L / 2 + (M + (k−1) T).

  Such positioning of the sheet material S is performed by the sheet material leading edge detection sensor 53 and the skew correction roller 51. That is, when the sheet material leading edge detection sensor 53 detects the leading edge of the sheet material S, the feed amount of the skew correction roller 51 is controlled so that the creasing position is the above-described position, and the sheet material S is positioned.

  When 2M = 0, the innermost sheet has a creasing interval of 0 and one streak.

  In the second embodiment, the position of N2 is from the rear end of the sheet material so that the position of N1 is L / 2− (M + (n−1) T) from the front end of the sheet material. Although L / 2 + (M + (n−1) T), the positions of N1 and N2 are not limited to this.

  In other words, the positions of N1 and N2 may be set to values that give the best appearance of the booklet to be bound. If you want to widen or reduce the spacing between the lines formed in the sheet material, Accordingly, the positions of N1 and N2 may be determined.

  The sheet material in which a plurality of streaks are formed in this manner becomes a sheet bundle 101 inside the conveyance path 41, is saddle stitched by the stapler 42, and is folded by the folding rollers 45 and 46, as shown in FIG. The booklet will look good without opening.

(Third embodiment)
FIG. 15 shows a third embodiment of a bookbinding apparatus according to the present invention and an image forming apparatus provided with the bookbinding apparatus, and shows a main part of the scoring device 55. Hereinafter, a third embodiment of the present invention will be described with reference to the drawings.

  In the first embodiment of the present invention, the number of streaks can be changed for each sheet material S constituting the booklet. In the second embodiment, a plurality of streaks are formed by changing a streak interval for each sheet material constituting the booklet. On the other hand, the third embodiment of the present invention is characterized in that the width of the stripe formed on the sheet material S can be changed for each sheet material.

  Further, the third embodiment of the present invention is different from the first and second embodiments in (Configuration of the scoring device) and (Description of scoring operation). Since it is not different from the second embodiment, the description of the same components will be omitted.

  That is, (the overall configuration of the apparatus), (explanation of the operation of the image forming apparatus main body), (explanation of the operation of the bookbinding apparatus), and (explanation of the control apparatus) are not different from the first and second embodiments. Since there is no description, the description will be omitted, and only (configuration of scoring device) and (explanation of scoring operation) will be described below.

(Configuration of scoring device)
15A and 15B are views of the scoring device 55 according to the third embodiment of the present invention as viewed from the direction of arrow A in FIG. 3, and FIGS. 15C and 15D are diagrams. It is the figure seen from the arrow C direction of 3.

  As shown in FIGS. 15A to 15D, the creasing device 55 according to the third embodiment of the present invention is characterized by including two creasing blades 59.

  And as shown in FIG.15 (c), sheet material is made by making the width | variety of one creasing blade (59b) larger than the width | variety of the other creasing blade (59a) among two creasing blades. When performing creasing to S, it becomes possible to change the width of the striation according to the stiffness of the sheet material S.

  These creasing blades 59a and 59b are attached to an arm 57a, and the arm 57a is attached to a slide base 56 so as to be rotatable about a support shaft 58a. The slide table 56 is supported so as to be slidable along the slide shafts 67a and 67b.

(Explanation of creasing action)
When forming a line on the sheet material S by the creasing device 55 configured as described above, normally, the arm 57a is pulled by the tension spring 60a, and the creasing blade 59a is pressed against the sheet material S (FIG. 15). (A)) and slide with the slide table 56. Thereby, a streak is formed in the sheet material S by the scoring blade 59a.

On the other hand, when a streak is formed on the sheet material S having high rigidity and easily opening, such as cardboard, for example, the solenoid 70 is driven and the scoring blade 59b is pressed against the sheet material (FIG. 15B).
)). Then, by sliding the slide base 56 along the slide shafts 67a and 67b, the sheet material S is formed by the creasing blade 59b so as to have a streak having a larger streak width than when the scoring blade 59a is used.

  According to the above configuration, for example, a line is formed by the creasing blade 59a for the sheet material S in the booklet, and a wide line is formed by the creasing blade 59b for the sheet material S of the cover of the booklet. Can be formed. FIG. 15E shows a sheet material in which a streak is formed by the scoring blade 59a, and FIG. 15F shows a sheet material in which a wide streak (shaded portion in the figure) is formed by the scoring blade 59b. Is.

  In the third embodiment, the scoring blades 59a and 59b having different widths are provided in the scoring device 55, but the combination of scoring blades is not limited to this. That is, instead of 59b, a creasing blade 59c having two fixed pitches may be provided in the creasing device 55 (FIG. 15 (d)). In this case, for example, two lines can be formed on the sheet material S of the cover of the booklet.

  The sheet material S in which a plurality of streaks are formed in this way becomes a sheet bundle 101 inside the conveyance path 41, is saddle stitched by the stapler 42, is bundled by the folding rollers 45 and 46, and does not open. Become a good booklet.

The booklet figure in a prior art example. The operation | movement figure in a prior art example. BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows the 1st Embodiment of this invention. The operation | movement figure which shows the 1st Embodiment of this invention. The operation | movement figure which shows the 1st Embodiment of this invention. The operation | movement figure which shows the 1st Embodiment of this invention. The operation | movement figure which shows the 1st Embodiment of this invention. The operation | movement figure which shows the 1st Embodiment of this invention. The operation | movement figure which shows the 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows the 1st Embodiment of this invention. The operation | movement figure which shows the 1st Embodiment of this invention. 1 is a booklet showing a first embodiment of the present invention. The operation | movement figure which shows the 2nd Embodiment of this invention. The booklet which shows the 2nd Embodiment of this invention. Schematic which shows the 3rd Embodiment of this invention. The block diagram which shows the control structure of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image forming apparatus main body 2 Bookbinding apparatus 12 Image forming part 13 Fixing roller 14 Discharge roller 15 Operation part 23 Document feeding apparatus 31-39 Conveyance roller 41 Conveyance path 42 Stapler 43 Stopper plate 44 Stopper 45, 46 Folding rollers 50, 53 Sheet Material leading edge detection sensor 51 Skew correction roller 54 Straightening base 55 Straightening device 59 Straightening blade 101 Sheet bundle 501 Bookbinding device control unit 905 CPU circuit unit S Sheet material

Claims (8)

Sheet creasing means for creasing the sheet material;
A sheet bundle folding means for bundling the lined sheet material and bundling along the line to bind the booklet;
Have
The sheet creasing means is
A bookbinding apparatus characterized in that the number of streaks applied to a sheet material can be changed for each sheet material constituting the booklet. The sheet creasing means is
The bookbinding apparatus according to claim 1, wherein the creasing is performed so that the number of streaks attached to the sheet material serving as a cover of the booklet is larger than the number of streaks attached to the sheet material serving as the contents. A sheet creasing means capable of attaching a plurality of lines to the sheet material;
A sheet bundle folding means for bundling the lined sheet material and bundling along the line to bind the booklet;
Have
The sheet creasing means is
A bookbinding apparatus characterized in that the spacing of the streaks can be changed for each sheet material constituting the booklet. The sheet creasing means is
The bookbinding apparatus according to claim 3, wherein the creasing is performed so that the distance between the streaks becomes wider as the sheet material constituting the booklet is located outside the booklet. Sheet creasing means for creasing the sheet material;
A sheet bundle folding means for bundling the lined sheet material and bundling along the line to bind the booklet;
Have
The sheet creasing means is
A bookbinding apparatus characterized in that the width of the streaks applied to the sheet material can be changed for each sheet material constituting the booklet. The sheet creasing means is
The bookbinding apparatus according to claim 5, comprising a plurality of creasing members. The sheet creasing means is
The bookbinding according to claim 5 or 6, wherein the creasing is performed so that the width of the streaks attached to the sheet material serving as the cover of the booklet is wider than the width of the streaks attached to the sheet material constituting the booklet. apparatus. An image forming unit for forming an image on a sheet material;
A bookbinding apparatus according to any one of claims 1 to 7,
An image forming apparatus comprising:

Images