JP2011246222A - Scoring device and image forming system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate changing the combination of two or more concave blades, while reducing a manufacturing cost of the concave blade.SOLUTION: In a scoring device which forms a score on a sheet of paper by holding the conveyed paper between a scoring member 121 and a support base 122, the support base 122 includes a concave member which is formed by symmetrically arranging two rectangular parallelepiped members 171a, 171b with the same cross-sectional shape and adhering their flanks. In the concave member, when a taper surface is formed by chamfering at a corner part in a longitudinal direction of the rectangular parallelepiped, and flanks of both members are adhered, a scoring groove 122a is formed by facing taper surfaces. Rotation of two members 171a, 171b changes the combination of the facing taper surfaces, and thereby allowing the scoring groove 122a corresponding to paper thickness to be selected.

Description

  The present invention performs saddle stitching on a bundle of sheets such as a sheet-like member (hereinafter referred to as a sheet) conveyed from the previous stage, and creates a creasing to the sheet before folding the sheet into two at the center. The present invention relates to an apparatus, and an image forming system including the creasing apparatus and the image forming apparatus.

  Conventionally, so-called center-folding or center-folding is performed in which a sheet bundle in which a plurality of sheets discharged from an image forming apparatus are bundled is subjected to saddle stitching, and the center-bound sheet bundle is folded in two at the center. It has been broken. When a bundle of sheets made up of a plurality of sheets is folded together in this way, the amount of extension of the sheet at the folding portion on the outer side of the sheet bundle becomes larger than that of the inner sheet. For this reason, the formed image portion extends at the outer paper folding portion, and the image portion may be damaged, such as toner peeling. The same phenomenon occurs in other folding processes such as Z-folding and three-folding. Further, folding may be insufficient depending on the thickness of the sheet bundle.

  Therefore, a creasing device called a creaser that prevents the toner from peeling off by pre-scoring the folded portion of the paper before the folding process such as folding the paper bundle in two and making the outer paper easy to break. Is already known. In such a creasing device, there is a creasing device that runs in a direction perpendicular to the conveying direction by running a roller, baking with a laser, or pressing with a creasing blade.

  For example, Patent Document 1 (Japanese Unexamined Patent Application Publication No. 2009-166927) discloses a method for folding a recording material while reducing the pressing force by the creasing member and allowing some variation in the dimensional accuracy of the creasing member and groove member. In order to provide a streak stably, a scoring member for providing a crease with respect to a predetermined line of the recording material, an insertion groove into which the scoring member can be inserted, and a scoring member are provided. Between the standby position and the crease provision position where the recording material is creased, and a pressing member that presses a portion sandwiching a predetermined line of the recording material in a state where the leading edge of the recording material is positioned at the standby position where it does not protrude from the recording material position The recording material is driven by the pressing member so that the recording material is pressed by the pressing member, and the recording material is pressed by the pressing member so that the peripheral portion of the recording material is lined with the scoring member. Invention and a reciprocating drive means for insertion to the insertion groove against the attractive to crease applying position incision member in the standby position is disclosed.

  In the invention described in Patent Document 1, it is provided with the advancing / retreating drive means for inserting the creasing member at the standby position with respect to the insertion groove to the crease providing position when the crease is applied, and this configuration makes the crease to the recording material. Although it is intended to be stably applied, when processing a groove with a concave blade, it is difficult to process a thin and shallow groove, and a dedicated tool is required. The need for a dedicated tool increases the cost of the tool and leads to an increase in manufacturing cost. Further, since it is necessary to replace the concave blade for each type depending on the paper thickness, it is further unavoidable that the running cost is increased and the productivity is reduced due to the occurrence of downtime.

  That is, among the upper and lower blades used when applying the crease, when trying to machine the lower blade of an integral object, a thin and angled shallow groove must be dug into the central part of the rectangular parallelepiped. Processing is required, processing time is long, and manufacturing costs are increased. Further, when the blade is replaced depending on the paper thickness or when the blade needs to be replaced due to the deterioration of the blade, the unit has to be pulled out and disassembled, which is a very laborious operation.

  Therefore, the problem to be solved by the present invention is to reduce the manufacturing cost of the concave blade and to easily change the combination of the plurality of concave blades.

  In order to solve the above-mentioned problem, the first means is a creasing apparatus for scoring a sheet of paper that has been conveyed with a convex member and a concave member sandwiching the paper, and the concave member has two sections having the same cross-sectional shape. The members are arranged symmetrically and provided with a recess formed by closely contacting the side surfaces of both members.

  According to a second means, in the first means, the concave member is formed of a rectangular parallelepiped, the corners in the longitudinal direction of the rectangular parallelepiped are chamfered, and the concave portion is formed by a combination of chamfered taper surfaces extending in the longitudinal direction. It is formed.

  The third means is characterized in that in the second means, there is provided drive means for separating and closely contacting the two members.

  The fourth means is characterized in that, in the third means, the driving means includes rotation driving means for rotating the two members during the separating operation of the two members.

  The fifth means is characterized in that in the third or fourth means, a recognition means for recognizing a combination of tapered surfaces of the two members is provided.

  The sixth means is characterized in that, in the fifth means, there is provided a detecting means for detecting completion of formation of the recess formed by the two members.

  The seventh means is that, in the fifth or sixth means, the combination of the paper thickness information acquisition means for acquiring the paper thickness, the paper thickness acquired by the paper thickness information acquisition means, and the taper surface matches. When the combination is determined by the determination means and the determination means, a creasing operation is executed, and when the combination is not correct, the two members are rotated by the rotation driving means, and a taper is performed. And control means for changing the combination of the surfaces.

  The eighth means is characterized by an image forming system comprising a crease forming apparatus according to any one of the first to seventh means and an image forming apparatus for forming an image on a sheet.

  In the embodiment described later, the sheet is denoted by reference symbols P1 to Pn, the convex member is denoted by the creasing member 121 and the creasing blade (convex blade) 121a, the concave material is denoted by the cradle 122 or the concave material G, and the creasing device. Is the creasing device 100, two members having the same cross-sectional shape are the first and second main body portions 171a and 171b, the recess is the creasing groove (concave blade) 122a, and the taper surfaces are denoted by reference numerals 121a1, 121a2, 121b1, 121b2, 121c1, 121c2, 121d1, 121d2, the driving means and the rotational driving means are in the rotation advance / retreat mechanism H, the recognition means is in the recognition sensor 161, the detection means is in the seating sensor 160, and the sheet thickness information acquisition means (step S101) The determination means (step S102) and the control means (steps S103, S104, and S107) are assigned to the CPU 100A, and the image forming apparatus is indicated by the symbol PR. , Each corresponding.

  According to the present invention, two members having the same cross-sectional shape are arranged symmetrically, and the side surfaces of both members are brought into close contact with each other so as to form a recess material. The combination of the concave blades can be easily changed. As a result, it is possible to avoid the occurrence of downtime and to prevent a decrease in productivity.

1 is a diagram illustrating a schematic configuration of an image forming system as a premise of the present invention. It is explanatory drawing which shows a series of operation | movement of an image forming system with a folding process, and shows a state when a paper is carried in into a crease forming apparatus. It is explanatory drawing which shows a series of operation | movement of an image forming system with a folding process, and shows a state when the front end of a sheet | seat is abutted against the butting board in front of the crease forming part. It is explanatory drawing which shows a series of operation | movement of an image forming system accompanied by a folding process, and shows a state when a butting plate retreats from a conveyance path and a sheet is conveyed. It is explanatory drawing which shows a series of operation | movement of an image forming system with a folding process, and shows the state when the crease forming process is performed with respect to the paper. FIG. 6 is an explanatory diagram showing a series of operations of the image forming system with folding processing when a creased sheet is carried into a sheet post-processing apparatus and a second sheet is carried into a crease apparatus; Indicates the state. It is explanatory drawing which shows a series of operation | movement of an image forming system with a folding process, and shows a state when the front end of the 2nd sheet | seat is abutted against the abutting board in front of the crease forming part. It is explanatory drawing which shows a series of operation | movement of an image forming system with a folding process, and shows the state when the crease | folding process is performed to the 3rd sheet | seat. It is explanatory drawing which shows a series of operation | movement of an image forming system with a folding process, and shows the state when the last sheet | seat is integrated | stacked on the middle folding process tray. FIG. 10 is an explanatory diagram showing a series of operations of the image forming system with folding processing, and shows a state when the sheet bundle is moved from the state of FIG. 9 to the center folding position. It is explanatory drawing which shows a series of operation | movement of an image forming system accompanying a folding process, and shows the state when the middle folding process is performed from the state of FIG. FIG. 5 is an explanatory diagram showing a series of operations of the image forming system with folding processing, and shows a state when a folded sheet bundle is discharged onto a stacking tray. It is the perspective view which looked at the creasing mechanism from the front side. It is the perspective view which looked at the creasing mechanism from the back side. It is a side view which shows the drive part of a creasing mechanism, a recessed part material, and the rotation and advance / retreat mechanism part which performs recombination. It is a side view of the recessed part material shown in FIG. FIG. 17 is a front view showing a state in which two concave portions shown in FIG. 16 are brought into close contact with each other. FIG. 16 is a perspective view of the drive unit illustrated in FIG. 15. It is operation | movement explanatory drawing which shows the proximity | contact operation | movement of the recessed part material driven by the drive part shown in FIG. It is operation | movement explanatory drawing which shows the separation operation | movement of the recessed part material driven by the drive part shown in FIG. It is operation | movement explanatory drawing which shows the seating operation | movement of the recessed part material driven by the drive part shown in FIG. It is operation | movement explanatory drawing which shows rotation operation | movement of the recessed part material driven by the drive part shown in FIG. It is a principal part side view of the drive part which shows the seating detection part which detects the state of the seating at the time of the seating operation | movement of FIG. It is a figure which shows the relationship between the recognition sensor which recognizes the kind of creasing groove | channel, and the groove | channel formed in the recessed part material. 2 is a block diagram illustrating a control configuration of an image forming system including a creasing apparatus, a folding processing apparatus that performs folding processing, and an image forming apparatus. FIG. It is a flowchart which shows the control procedure of a scoring apparatus.

  In the present invention, the lower blade is divided into right and left from the center of the groove, and a chamfering process that can be easily processed is performed to shorten the processing time and reduce the cost. In addition, the same number of chamfering treatments were used to reduce the number of times the lower blade was replaced due to deterioration, and a plurality of combinations corresponding to the paper thickness were realized by using different sizes. Furthermore, by providing an advance / retreat mechanism and a rotation mechanism, the user can set the combination of the lower blades from the front operation panel of the apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a schematic configuration of an image forming system as a premise of the present invention. This image forming system basically includes an image forming apparatus PR that forms an image on a sheet, a creasing apparatus 100 that performs scoring, and a folding processing apparatus 200 that performs a folding process (post-processing).

  The image forming apparatus PR visualizes and outputs image data input from a scanner, PC, etc. as a visible image on paper, and uses a known image forming engine such as an electrophotographic method or a droplet discharge method. The

  The scoring device 100 includes a transport mechanism 110 and a scoring mechanism 120. The scoring mechanism 120 includes a scoring member 121 and a cradle 122, and a linear streak is formed by sandwiching paper between the scoring member 121 and the cradle 122. Attached. A scoring blade (crease blade-convex blade) 121a for making a mark is linearly provided in an end surface of the scoring member 121 facing the pedestal 122 in a direction perpendicular to the paper transport direction. It has a blade shape with a sharp tip. On the other hand, a crease groove 122a (concave blade) into which the tip edge 121a is fitted is cut into a surface of the cradle 122 facing the crease blade 121a. Since both are formed in such a shape, when the sheet is sandwiched, a crease is formed by the tip shape (convex blade) and the groove shape (concave blade).

  The creasing member 121 is always elastically biased toward the cradle 122 by an elastic member 124, for example, a compression spring, and is driven in the vertical direction by a drive cam 123. Note that the upper end of the elastic member 124 is regulated by the spring fixing member 125.

  Here, the transport mechanism includes first to third transport rollers 111, 112, and 113, and transports the paper that has been carried in from the image forming apparatus PR to the subsequent stage. An inlet sensor SN1 that detects the leading edge and the trailing edge of the sheet carried into the creasing device 100 is provided immediately before the first conveying roller 111 disposed on the most upstream side. Immediately after the second conveying roller 112 provided in the creasing mechanism 120, a butting plate 126 against which the leading end of the sheet is abutted is installed so as to be movable up and down with respect to the conveying path 114.

  The folding processing device 200 includes a half-folding device 250 that performs a folding process. A sheet on which a crease is made by the scoring device 100 is carried, and the sheet is folded by the transport rollers 211, 212, and 213 of the transport mechanism. Lead to 250.

  The middle folding device 250 includes a middle folding processing tray 251, a rear end fence 252 provided at the lower end of the middle folding processing tray 251 (the most upstream side in the conveying direction), a folding plate 253 and folding rollers 254 that fold along the folds, and a stack. A tray 255 is provided. The trailing edge fence 252 performs alignment in the sheet conveyance direction. The trailing edge of the sheet discharged to the half-fold processing tray 251 is forcibly pressed against the trailing edge fence 252 by a return roller (not shown), and the position of the sheet is adjusted. Align. Further, alignment in a direction orthogonal to the transport direction is also performed by a jogger fence (not shown).

  The folding plate 253 presses the leading edge of the folding plate 253 against the aligned sheet bundle along the fold and pushes it into the nip of the folding roller 254. As a result, the sheet bundle is pushed into the nip of the folding roller 254, and a crease is made at the nip. In the case where the saddle stitching process is involved, the folding process, so-called bi-folding, is performed after the binding process is performed on a portion to be streaked by a binding device (not shown). The folded sheet bundle is discharged to the stacking tray 255 and stacked.

  2 to 12 are explanatory diagrams showing a series of operations of the image forming system accompanied with the folding process. In this image forming system, the sheet P1 on which the image is formed in the image forming apparatus PR is conveyed into the creasing apparatus 100 (FIG. 2), and the sheet is applied to the abutting plate 126 protruding into the conveying path 114 in order to correct the skew. The leading edge is abutted (FIG. 3), and the skew of the paper P1 is corrected. Thereafter, the abutting plate 126 is retracted from the conveyance path 114 as indicated by an arrow, and the paper P is re-conveyed and stops at a position where a line is added (FIG. 4). The position where the line is to be added is determined by the timing at which the entrance sensor SN1 detects the leading edge of the sheet and the sheet size.

  Then, the driving cam 123 rotates with respect to the paper P1 stopped at this position, and the creasing member 121 descends to sandwich the paper P1 with the receiving tray 122. At that time, the elastic member 124 is pressurized with a predetermined elastic force, and a streak is applied by the applied pressure (FIG. 5). Thereafter, the sheet P1 with the crease is conveyed to the folding processing apparatus 200 (FIG. 6) and temporarily stored in the middle folding processing tray 251 (FIG. 7). Meanwhile, the next paper P2 is carried into the creasing apparatus 100 from the image forming apparatus PR.

  The operations shown in FIGS. 2 to 7 are repeated a predetermined number of times (FIG. 8), and a sheet bundle (P1 to Pn) made up of a predetermined number of sheets (P1 to Pn) is stored in the middle folding processing tray 251 (FIG. 9). ) The rear end fence 11 is moved (upward) to align the folded portion of the sheet bundle with the folding position (FIG. 10). After that, the streak portion attached to the paper is pushed by the folding plate 253 and pushed into the nip of the folding roller 9 to perform the folding process (FIG. 11). Then, the sheet bundle that has been folded into a booklet is sequentially stacked on the stacking tray 255 (FIG. 12).

  The above is a series of operations from the creasing process to the folding process. Although not shown, in the case of a folding mode such as three-folding, Z-folding, or four-tone folding, it can be dealt with by adding a streak for the number of times the folding process is performed by the scoring device 100.

Here, the creasing mechanism 120 will be described in more detail.
13 is a perspective view of the creasing mechanism 120 as viewed from the front side, and FIG. 14 is a perspective view of the scoring mechanism 120 as viewed from the back side. In these drawings, the creasing mechanism 120 includes a creasing member 121, a cradle 122, and a driving mechanism 130M.

  In addition to the creasing blade (convex blade) 121a provided at the lower end, the creasing member 121 includes first and second first and second support shafts 132 and 133 which are loosely fitted on the front side and the rear side, respectively. Two insertion holes 121R and 121S are perforated, and first and second positioning members 131a and 131b are provided at the rear end portion and the front end portion, respectively. The first and second insertion holes 121 </ b> R and 121 </ b> S are formed in a direction perpendicular to the paper conveyance direction, and are relative to a plane perpendicular to the paper conveyance direction between the first and second support shafts 132 and 133. Is allowed to move in the paper transport direction. The first and second positioning members 131a and 131b are disk-shaped cam followers that are suspended substantially vertically downward from the rear end portion and front end portion of the creasing member 121 and are rotatably supported at the center. , 123b and rotate.

  The cradle 122 is connected to the spring fixing member 125 disposed above the creasing member 121 via the first and second support shafts 132 and 133 and moves integrally. The spring fixing member 125 is provided with first and second shaft members 127a, 127b (generally referred to as shaft members 127) on the rear side and the front side in the direction of the creasing member 121, and these shaft members 127a, The first and second elastic members 124a and 124b (generally referred to as elastic members 124) on the rear side and the front side are respectively mounted on the outer periphery of the 127b, and the spring fixing member 125 and the cradle 122 are always elastic upward. Energized.

  The drive mechanism 130M is a mechanism that rotationally drives the drive cams 123a and 123b that are in contact with the positioning members 131a and 131b, presses the creasing member 121 against the cradle 122, and separates them. A camshaft 134 in which the drive cams 123a and 123b are coaxially connected at the rear and the front, and a drive gear train 135 that drives the camshaft 124 on the end (the rear end in this embodiment) side of the camshaft 134. And a drive motor 130 for driving the drive gear train 135. The first and second drive cams 123a and 123b are disposed at positions where they are opposed to and contact with the first and second positioning members (cam followers) 131a and 131b, respectively, and the first and second drive cams 123a and 123b are located at the center of the cam shaft 134. The approaching (pressing) operation and the separating operation of the creasing member 121 with respect to the pedestal 122 are performed according to the distance between the two in the line connecting the rotation centers of the two positioning members 131a and 131b.

  In this embodiment, in order to change the groove shape (groove depth) of the scoring groove (concave blade) 122a, a corner portion of a columnar body (hereinafter referred to as a recess material) having a square cross section is used. That is, the corners of the two recess members are formed in a taper shape, and a scoring groove (concave blade) is formed using the taper corner.

  FIG. 15 is a side view showing the driving unit F, the recessed member G, and the rotation and advance / retreat mechanism unit H that performs the recombination of the creasing mechanism 120. In FIG. 15, the portions surrounded by a chain line correspond to the drive unit F, the recessed member G, and a rotation and advance / retreat mechanism unit (hereinafter referred to as a rotation advance / retreat mechanism unit) H that performs recombination.

  FIG. 16 is a side view of the concave member G, and the rotation pins 141 are fixed to both ends of the main body 171. The length in the longitudinal direction of the main body 171 of the recess material G corresponds to the length in the longitudinal direction of the creasing blade (convex blade) 121a, and is set so that the creasing blade 121a can be fitted in the creasing groove 122a. ing.

  As shown in the front view in which the side surfaces of the two concave members G in FIG. 17 are combined, each corner of the first and second main body portions 171a and 171b of the concave member G has a first shape in FIG. Tapered surfaces 121 a 1, 121 a 2, 121 b 1, 121 b 2, 121 c 1, 121 c 2, 121 d 1, 121 d 2 are formed with the chamfered surface being a plane in which the side surfaces of the first and second body portions 171 a, 171 b are combined. . Thus, V grooves 121a, 121b, 121c, and 121d are formed by the two tapered surfaces 121a1 and 121a2 at the corners facing each other when the side surfaces of the first and second main body portions 171a and 171b are brought into close contact with each other. . This V-groove becomes a creasing groove (concave blade). Accordingly, in the recess material G shown in FIG. 17, four types of the scoring grooves 122a, 122b, 122c, and 122d are formed. The scoring grooves 122b, 122c, and 122d are not specifically illustrated, but can be easily inferred if they are replaced with the scoring grooves 122a.

  FIG. 18 is a perspective view showing the drive unit F. FIG. In the drive unit F, the drive gear 144 is rotated by the recombination motor 142, and the driven gear 145 engaged therewith is rotated. The driven gear 145 drives the cam shaft 149 and rotationally drives the cams 146 and 147 attached to the cam shaft 149. The cam shaft 149 is held by the bearing 48, and the recombination motor 142 is attached to the cradle 122 via the bracket 143.

  19 and 20 are side views for explaining the operation of the advancing / retreating mechanism portion H as seen from the cam 146 of FIG. Since the cam 147 side is hidden behind the cam 146 and cannot be seen, only the end portion on the cam 146 side will be described here, but the same mechanism is provided symmetrically on the cam 147 side.

  19 and 20, a cam follower 151 is brought into contact with the outer peripheral surface of the cam 146, and the bracket 150 that rotatably supports the cam follower 151 is moved in the vertical direction. FIG. 19 shows the state when the bracket 150 is at the lowest position, and FIG. 20 shows the state when the bracket 150 is at the highest position.

  The bracket 150 is formed with a pair of linear first guide grooves 152 extending in the vertical direction, and a second guide groove 154 formed in an arc shape above the guide grooves 152. . On the other hand, a guide pin 155 is erected on the base 129 on the cradle 122, is loosely fitted in the first guide groove 152, and moves along the first guide groove 152. On the other hand, the second guide groove 154 is loosely fitted with a rotation pin 141 fixed to both ends of the first and second main body portions 171a and 171b of the recess material G, and is inserted into the second guide groove 154. It is designed to move along. In addition, in FIG. 19, the guide pin 155 and the rotation pin 141 located on the same side with respect to the axis of symmetry as described in FIG. 17 are connected by the connecting member 153. Thereby, the positions of the guide pin 155 and the rotation pin 141 change according to the relative positions of the first and second guide grooves 152 and 154, and the bracket 150 is moved up and down (arrow Du direction and arrow Dd direction). Thus, the first and second main body portions 171a and 171b can be moved closer to and away from each other (arrow D1 direction, arrow D2 direction). The bracket 150 moves up and down as the cam follower 151 moves up and down in response to the rotation of the cam 146 and synchronizes with the lifting and lowering operation.

  FIG. 19 shows a state in which the first and second main body portions 171a and 171b are in close contact with each other and are seated on the upper surface of the base 129. In this state, as shown in FIG. A streaking groove (concave groove) 122a is formed by 122a2. When separating the first and second main body portions 171a and 171b, the cam 146 is rotated and the bracket 150 is raised. Thus, the first and second main body portions 171a and 171b are separated as shown in FIG.

  Thus, by rotating the cam 146 and moving the bracket 150 up and down, the first and second main body portions 171a and 171b can be separated and brought into close contact with each other.

  On the other hand, as shown in FIGS. 21 and 22, the bracket 150 is provided with a claw 156 having a driving means (not shown), and the first and second main body portions 171a and 171b are separated from the base 129 (arrow Du). Direction, arrow D2 direction), the tip of the claw 156 is caught by the protrusions 141a of the rotating pins 141 at both ends, and the concave member G is rotated in the direction of arrow D3. As shown in FIG. 17, the protrusion 141a protrudes in a petal shape on the side surface of the main body 171 and has four protrusions.

  When the cam 146 rotates from the state shown in FIG. 21 at the lowest position and the bracket 150 is raised, the tip of the claw 156 engages with the protrusion 141a, and the arrow D3 in FIG. The first and second main body portions 171a and 171b are rotated in the direction. When the engagement state with the protrusion 141a at the tip of the claw 156 is released, the rotation operation is finished. When the cam 146 further rotates and the bracket 150 is lowered, the first and second main body portions 171a and 171b come close to each other as shown in the direction of the arrow Dd, and finally the side surfaces of the two come into close contact with each other as shown in FIG. , Seat on the upper surface of the base 129 of the cradle 122. At that time, the lowering of the bracket 150 (in the direction of the arrow Dd) applies a moment in the direction of the arrow D4 to the first and second main body portions 171a and 171b, and the first and second main body portions 171a and 171b have a predetermined pressure. In the added state, it closely adheres, and a creasing groove 122a is formed at the upper part between the two.

  Since it is configured in this way, if the number of rotations is selected, four types of creasing grooves 122a, 122b, 122c, and 122d can be prepared without exchanging the recess material G.

  19 and 20, the claw 156 is not driven, the tip of the claw 156 is located away from the rotating pin 141, and is caught by the protruding portion 141 a of the rotating pin 141. The concave member G is not rotated in the direction of the arrow D3.

  After the first and second main body portions 171a and 171b are separated as shown in FIG. 22 as shown in FIG. 21, the cams 146 and 147 are further rotated to receive the first and second main body portions 171a and 171b. When a scoring operation is performed in a non-sitting state when sitting on the guide part of the base 129 of the base 122, problems such as blade breakage occur. Therefore, in the present embodiment, the seating detection sensor 160 is installed to prevent the creasing blade 121a and the creasing groove 122a from being damaged.

  The seating detection sensor 160 includes a so-called proximity sensor provided at a position shown in FIG. 23, and the seating detection sensor 160 detects the position of the bracket 150 and detects whether the seating is completed from the position of the bracket 150. . The seating detection sensor 160 only needs to be able to detect whether or not seating is possible, so any method or detection position may be used.

  In FIG. 24, the first and second main body portions 171a and 171b are processed with grooves patterned for each combination of the paper thickness and the scoring grooves 122a to 122d, and the first and second main body portions 171a and 171b are recognized. By identifying with the sensor 161, the user recognizes the state of the creasing grooves 122a to 122d from the operation panel on the front surface of the apparatus, and automatically selects the creasing grooves 122a to 122d of the concave member G by the selection operation from the operation panel. Combinations can be changed.

  Even if the user does not select, it is also possible to automatically select one of the scoring grooves 122a to 122d from the combination information of the sheet thickness and the scoring grooves 122a to 122d and perform the scoring. .

  In FIG. 24, three combinations 1 to 3 are shown, and an example of a combination of the correlation between the detection output of the two recognition sensors 161 a and b of the groove 171c formed in the main body 171 and the presence or absence of the groove is shown. Yes.

  FIG. 25 is a block diagram illustrating a control configuration of an image forming system including the creasing apparatus 100, the folding processing apparatus 200 that performs the folding process, and the image forming apparatus PR. The scoring apparatus 100 includes a control circuit on which a microcomputer having a CPU 100A, an I / O interface 100B, and the like is mounted. The CPU 100A includes a CPU of the image forming apparatus PR, each switch of the operation panel, and each sensor (not shown). A signal is input via the communication interface 100C, and the CPU 100A executes predetermined control based on the input signal. Further, the CPU 100A exchanges similar signals with the folding processing device 200 via the communication interface 200A, and executes predetermined control based on the input signals. Further, the CPU 100A controls the driving of the solenoid and the motor via the driver and the motor driver, and acquires sensor information in the apparatus from the interface. In addition, motor drive control is performed by the motor driver via the I / O interface 100B in accordance with the control target and sensor, and sensor information is acquired from the sensor. The control is based on a program defined by the program code while the CPU 100A reads a program code stored in a ROM (not shown), expands it in a RAM (not shown), and uses the RAM as a work area and a data buffer. Executed.

  FIG. 26 is a flowchart showing a control procedure of the scoring apparatus 100 executed by the CPU 100A. When the sheet thickness information is acquired from the image forming apparatus PR, the scoring apparatus 100 determines whether the combination of the acquired sheet thickness information and the scoring groove 122a is appropriate (step S102). If appropriate, the creasing operation is executed as it is (step S107), and if not appropriate, the recombination motor 142 that drives the camshaft 149 is rotated (step S103), and whether the seating position of the cradle 122 is normal or not. (Whether seating is completed) is detected (step S105), and if seating is performed normally, it is determined whether or not the combination of the crease groove 122a of the cradle and the sheet thickness information is appropriate (step S106). If appropriate, the scoring operation is executed (step S107). If not appropriate, the process returns to step S103, and the subsequent processing is executed until appropriate in step S106. The process proceeds to the creasing operation (step S107). If the cradle 122 is not normally seated in step S105, an error notification is sent to the image forming apparatus PR side (step S108). The error notification is displayed on an operation panel (not shown) of the image forming apparatus PR to notify the user that the seating error has occurred.

  If it is a seating error, the creasing groove 122a is not formed, and the creasing is not performed well. Therefore, in such a case, it is also possible to turn off the creasing device, avoid the creasing operation, and transport the sheet to the folding device to perform the folding process.

  In addition, when the first and second main body portions 171a and 171b are not mounted, or when the mounting is incomplete, a seating error occurs. It is also possible to prevent the breakage.

  In FIG. 26, the CPU 100A of the scoring apparatus 100 controls the scoring operation, but it may be configured to be executed by the CPU on the image forming apparatus PR side.

As described above, according to the present embodiment,
1) Since the rectangular parallelepipeds that have been chamfered at the respective corners of the first and second main body portions 171a and 171b can be arranged symmetrically to form the concave blade (the bracing groove 122a), a plurality of components can be formed in one part. It is possible to form a seed concave blade.
2) By dividing the blade from the center of the groove to the left and right, since the groove processing can be changed to a simple chamfering processing, the cost can be reduced.
3) The first and second main body portions 171a and 171b, which are rectangular parallelepipeds, are chamfered with different sizes to form tapered surfaces 121a1, 121a2, 121b1, 121b2, 121c1, 121c2, 121d1, 121d2, The type of the V-shaped grooves 121a, 121b, 121c, 121d of the concave blades can be changed by rotating the first and second main body parts 171a, 171b having a rectangular parallelepiped shape by the rotation mechanism, so that the combination of the blades can be easily changed. It becomes possible to do.
4) Since the combination of blades according to the paper thickness can be automatically changed (steps S102 to S104), the scoring operation can be performed, so that the user does not have to worry about the selection of the blades. It is possible to improve the performance. It is also easy to change the combination of blades by a selection operation from the user's operation panel.

5) Since the recognition sensor 161 corresponding to the plurality of combinations for recognizing the concave blade set in the second guide groove 154 of the bracket 150 is arranged, it depends on the combination shape difference between the scoring blade and the top and bottom blades of the scoring groove. Breakage of the blade can be prevented.
6) Since the seating detection sensor for detecting the seating of the first and second main body portions 171a and 171b, which are rectangular parallelepipeds, on the base 129 of the cradle 122 is disposed, the breakage caused by the unloading of the concave blade (the concave portion G) Can be prevented.
There are effects such as.

  It should be noted that the present invention is not limited to this embodiment, and various modifications are possible, and all technical matters included in the technical idea described in the scope of claims are the subject of the present invention.

100 creasing device 100A CPU
121 creasing member 121a creasing blade (convex blade)
121 a 1, 121 a 2, 121 b 1, 121 b 2, 121 c 1, 121 c 2, 121 d 1, 121 d 2 taper surface 122 cradle 171 a first main body portion 171 b second main body portion 160 seating sensor 161 recognition sensor F driving portion H rotation advance / retreat mechanism portion G concave portion P 1 ~ Pn Paper PR Image forming device

JP 2009-166927 A

Claims (8)

In the creasing device for scoring the paper by sandwiching the paper by the convex member and the concave material on the conveyed paper,
The creasing apparatus is characterized in that the concave member is provided with a concave portion formed by arranging two members having the same cross-sectional shape symmetrically and bringing the side surfaces of both members into close contact with each other. In the creasing apparatus of Claim 1,
The recess material is a rectangular parallelepiped,
Chamfering is applied to the corners in the longitudinal direction of the rectangular parallelepiped,
The creasing device is characterized in that the concave portion is formed by a combination of chamfered tapered surfaces extending in the longitudinal direction. The creasing apparatus according to claim 2, wherein
A creasing device comprising a driving means for separating and closely contacting the two members. The creasing apparatus according to claim 3, wherein
The crease forming apparatus according to claim 1, wherein the driving means includes rotation driving means for rotating the two members during the separation operation of the two members. The crease creasing device according to claim 3 or 4,
A crease crease device comprising recognition means for recognizing a combination of tapered surfaces of the two members. The creasing apparatus according to claim 5, wherein
A creasing device comprising a detecting means for detecting completion of formation of a recess formed by the two members. The crease crease device according to claim 5 or 6,
Paper thickness information acquisition means for acquiring the paper thickness;
Determination means for determining whether the combination of the paper thickness acquired by the paper thickness information acquisition means and the tapered surface matches;
Control means for executing a creasing operation when the combination is correct by the determination means, and for rotating the two members by the rotation driving means to change the combination of the tapered surfaces when the combination is not correct When,
A crease forming apparatus comprising: A crease crease device according to any one of claims 1 to 7,
An image forming apparatus for forming an image on paper;
An image forming system comprising: