Patent Publication Number: US-7896330-B2

Title: Binding processing apparatus

Description:
TECHNICAL FIELD 
     The present invention relates to a binding processing apparatus for binding sheets of paper, on which punch holes are formed, by attaching a ring-shaped binder to the sheets of paper. 
     BACKGROUND ART 
     In the field of copiers, a copier, into which an electric stapler is integrated, is well known, which has an after-processing function of binding sheets of paper, which are successively sent out from a copying mechanism, by a stapler for each set. Concerning the binding means except for the means of stapling, a binding means, in which a coil binder or a comb type binder having a multiple ring-is used, is well known because of good looks and easy handling and turning pages. When binding is conducted by these binding means, it is necessary to make punch holes on sheets of paper. JP-A-2003-231092 and JP-B2-3437511 disclose a punching device, which is connected to or integrated with a copier, into which sheets of paper, which have already been subjected to copying or printing, are successively drawn and punch holes are formed by a punching means. Further, JP-A-2002-337474 discloses a coil binder. This coil binder is attached to punch holes on sheets of paper, which have already been formed, while the coil binder is being rotated. 
     If the punching device and the binding device described above are capable of being combined with each other, it becomes possible to link the punching device and the binding device with a copier or a printer, so that all the printing process, the punching process and the binding process can be automatically carried out. However, when the binder is attached to sheets of paper in the binding processing apparatus, unless the binder is made to agree with the respective punch holes formed on the laminated sheets of paper, it is impossible to attached the binder to the sheets of paper. In the case where binder attaching processing is continuously conducted with a ring binder in which divided ring portions are arranged on both sides of a liner spine, unless positions of the punch holes and positions of the divided ring portions accurately agree with each other, it is impossible to insert the divided ring portions of the binder into the punch holes formed on the sheets of paper. In this case, a problem of failing in attaching the binder to the sheets of paper may be caused. Further, a problem of damaging the binder may be caused. Therefore, as long as the respective punch holes, which are formed on the stacked sheets of paper, can not be made to agree with each other and the punch holes and the divided ring portions are not positionally made to agree with each other, it is impossible to automatically continuously carry out the punching and the binding processing by combining the punching processing device with the binding processing apparatus in which the ring binder is used. 
     DISCLOSURE OF THE INVENTION 
     An object of the present invention is to make positions of the punch holes, which are formed on sheets of paper sent from a punching device to a binding processing apparatus, accurately agree with a binding processing apparatus. 
     In the case where the binding processing is automatized, when the ring binders of booklets, which are discharged onto a stack tray after the completion of binding processing, are stacked on each other, the ring binders become bulky and it becomes difficult to handle them. Therefore, it is a second object of the present invention to reduce a space occupied by the booklets discharged after the completion of binding processing so as to make the handling easy. 
     In order to accomplish the above objects, the present invention provides a binding processing apparatus, the constitution of which will be described as follows. The binding processing device is provided with: a punching device; and a binding processing apparatus for attaching a binder into punch holes formed on sheets of paper. Sheets of paper, which are punched by the punching device, are successively sent onto a sheet table of the binding processing device, and a division ring type binder is attached into punch holes of one set of sheets of paper stacked on the sheet table. The sheet table includes a positioning means for conducting positioning of sheets of paper in a sheet conveyance direction and in a direction perpendicular to the sheet conveyance direction. The positioning means is composed so that a positional relation between the sheets of paper and the binder at the time of binding attaching processing can be the same as a positional relation between the sheets of paper and the punch at the time of punching processing. 
     In this connection, the following constitution may be adopted. A sheet forward end position regulating plate, which is retractable, is provided at a forward end portion of the sheet table so that the sheet forward end position regulating plate can be used as a reference of arranging the sheets of paper. After the completion of positioning one set of sheets of paper, the sheet forward end position regulating plate is retracted and sent to a binding mechanism section. 
     Further, the following constitution may be adopted. The positioning means for positioning in the direction perpendicular to the sheet conveyance direction is composed so that it can be retracted being raised from the sheet table. 
     Sheets of paper may be positioned on the basis of the punch holes as follows. An upper side slide pin, which descends from an upper portion of the sheet table to the table, is provided. Alternatively, a lower side slide pin, which ascends upward from a lower portion of the sheet table, and the upper side slide pin are provided. The upper side slide pin or the upper and lower side slide pins are inserted into the punch holes formed on the sheets of paper which are put on the sheet table so that the sheets of paper can be positioned on the basis of punch holes. 
     The following constitution may be adopted. After the sheets of paper have been positioned by the upper side slide pin or both the upper and the lower side slide pin, the sheets of paper are clamped onto the sheet table by a movable clamp, and the slide pin is retracted and sent to the binding mechanism section. 
     The following constitution may be adopted. After the sheets of paper have been positioned by the upper side slide pin and the sheets of paper have been clamped by the movable clamp, the slide pin is retracted and the movable clamp is released so as to wait for the supply of the successive sheets of paper. 
     The following constitution may be adopted. A sheet table moving mechanism is provided which makes the sheet table advance forward to the binding mechanism section and retract backward, and a sheet table rotating mechanism is provided which rotates the sheet table from a position opposing to the binding mechanism section and discharges the sheets of paper. 
     Further, the present invention provides a binding processing apparatus, which will be described as follows. The binding processing apparatus includes: a punching device; and a binding processing device for attaching a binder into punch holes formed on sheets of paper. Sheets of paper, which are punched by the punching device, are successively sent onto a sheet table of the binding processing device, and a division ring type binder is attached into punch holes of one set of sheets of paper stacked on the sheet table. A sheet feed mechanism is provided which alternately shifts booklets, which have been subjected to binding processing, in the lateral direction, so that rings of the binder, which is attached to the next row of booklet, can enter spaces between the rings of the binder attached to the front row of booklet. 
     Further, the present invention provides a binding processing apparatus, which will be described as follows. The binding processing apparatus includes: a punching device; and a binding processing device for attaching a binder into punch holes formed on sheets of paper. Sheets of paper, which are punched by the punching device, are successively sent onto a sheet table of the binding processing device, and a division ring type binder is attached into punch holes of one set of sheets of paper stacked on the sheet table. In the discharge mechanism of discharging the booklets which have been subjected to binding processing, a control means for successively shifting falling positions of the booklets to the front or the rear is provided, so that the ring binders of the sets of booklets can not be overlapped on each other. 
     The present invention provides a binding processing apparatus including: a punching device: and a binding processing device for attaching a binder to punch holes formed on sheets of paper, wherein the sheets of paper, which have been punched by the punching device, are successively sent to a sheet table of the binding processing device and a division ring type binder is attached to punch holes of one set of sheets of paper stacked on the sheet table. Partitions for dividing booklets into each booklet are provided in a container for receiving the booklets discharged after the completion of binding processing. A discharge control means is provided which controls to discharge the booklets one by one into a space divided by the partitions. 
     Further, the present invention provides a binding processing apparatus including: a punching device: and a binding processing device for attaching a binder to punch holes formed on sheets of paper, wherein the sheets of paper, which have been punched by the punching device, are successively sent to a sheet table of the binding processing device and a division ring type binder is attached to punch holes of one set of sheets of paper stacked on the sheet table. A plurality of longitudinal slats and a longitudinally moving mechanism for moving the slats are provided on the right and the left in a container for receiving the booklets discharged after the completion of binding processing. When the right and the left longitudinal slats are synchronously driven, the booklets discharged after the completion of binding processing are accommodated in the spaces, which are divided by the longitudinal slats, one by one. 
     The present invention provides a binding processing apparatus including: a punching device; and a binding processing device in which a ring binder is used, wherein the punching processing and the binder attaching processing are continuously carried out. A sheet table of the binding processing device includes a positioning means for conducting positioning of sheets of paper in a sheet conveyance direction and a direction perpendicular to the sheet conveyance direction. The positioning means is composed so that a positional relation between the sheets of paper and the binder at the time of binding attaching processing can be the same as a positional relation between the sheets of paper and the punch at the time of punching processing. Due to the above constitution, when the binder is attached, positions of the punch holes and positions of the ring portions of the division type ring binder accurately agree with each other. Therefore, the attaching performance can be stabilized. 
     Booklets, which have been subjected to binding processing, are successively discharged being shifted in the lateral direction or in the longitudinal direction, so that the ring binders of the booklets can be prevented from being overlapped on each other, and it becomes possible to reduce a height and volume of the stacked booklets after the completion of binding processing. Therefore, the booklets can be easily handled. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a side view showing a binding processing apparatus of an embodiment of the present invention. 
         FIG. 2  is a partially enlarged view of  FIG. 1   
         FIG. 3  is a side view showing a binding processing apparatus in a sheet discharge process. 
         FIG. 4A  is a side view showing a sheet stopper at the time of retraction. 
         FIG. 4B  is a side view showing a sheet stopper at the time of operation. 
         FIG. 5A  is a side view showing a sheet clamp at the time of opening. 
         FIG. 5B  is a side view showing a sheet clamp at the time of operation. 
         FIG. 6  is a plan view for explaining a sheet positioning process. 
         FIG. 7  is a plan view for explaining a sheet positioning process. 
         FIG. 8  is a plan view for explaining a sheet positioning process. 
         FIG. 9  is a side view showing a primary portion of a binding processing apparatus of another embodiment. 
         FIG. 10A  is a side view showing a lower side positioning pin at the time of operation. 
         FIG. 10B  is a side view showing a lower side positioning pin at the time of retraction. 
         FIG. 11A  is a side view showing an upper side positioning pin at the time of retraction. 
         FIG. 11B  is a side view showing an upper side positioning pin at the time of operation. 
         FIG. 12  is a plan view for explaining a sheet positioning process. 
         FIG. 13  is a plan view for explaining a sheet positioning process. 
         FIG. 14  is a plan view for explaining a sheet positioning process. 
         FIG. 15  is a view for explaining a longitudinal offset discharge of sheets of paper. 
         FIG. 16  is a view for explaining a vertical row discharge of sheets of paper. 
         FIG. 17A  is a plan view showing a vertical sheet container of a binding processing apparatus. 
         FIG. 17B  is a front view of a vertical sheet container of a binding processing apparatus. 
         FIG. 18  is a view for explaining an alternate offset discharge of sheets of paper. 
     
    
    
     In the views, reference numeral  1  is a binding processing apparatus, reference numeral  3  is a punching device, reference numeral  4  is a stack tray, reference numeral  11  is a binding processing device, reference numeral  15  is a sheet guide unit, reference numeral  16  is a sheet guide, reference numeral  17  is a sheet table, reference numeral  18  is a binding mechanism section, reference numeral  19  is a sheet forward end position regulating plate, reference numeral  22  is a positioning plate used as reference, reference numeral  23  is a movable positioning plate, reference numeral  24  is a binder cartridge, reference numeral  25  is a pusher, reference numeral  29  is a sheet clamp, reference numeral  41  is a biding processing device, reference numeral  42  is a lower side positioning pin, reference numeral  43  is an upper side positioning pin, reference numeral  51  is a roller, reference numeral  52  is a belt, reference numeral  53  is a container, reference numeral  54  is a roller, reference numeral  55  is a belt, reference numeral  56  is a slat, reference numeral  57  is a sheet discharge roller and reference numeral  58  is a drive shaft. 
     BEST MODE FOR CARRYING OUT THE INVENTION 
     Referring to the drawings, embodiments of the present invention will be explained as follows. 
     Embodiment 1 
       FIG. 1  is a view showing only a binding processing device  11  which is incorporated into a binding processing apparatus including a punching device and the binding processing device. In this binding processing device  11 , operation is conducted as follows. A ring binder B is used, in which a division ring portion is arranged on both sides of a linear spine portion. This ring binder B is incorporated into a cartridge  24 . Divided ring portions, which are opposed to each other interposing the spine portion, are held by a pusher  18  provided in a main body, so that the divided ring portions can be engaged with sheets of paper being formed into a ring shape. In this connection, an overall arrangement of the binding processing apparatus is described as follows. As shown in  FIG. 15 , a binding processing device  11  is arranged in a left lower portion in a housing  2  of the binding processing apparatus  1 . A punching device  3  is arranged in a right upper portion in the housing  2 . In  FIG. 15 , a copier (not shown) is arranged on the right of the binding processing apparatus  1 . A sheet of paper discharged from the copier is sent to the punching device  3  of the binding processing apparatus  1  and punched by the punching device  3 . The thus punched sheet of paper is sent out to the binding processing device  11  arranged in a lower portion and bound by the binding processing device. After the completion of this binding processing, as shown in  FIG. 3 , a sheet table  17  is raised and a booklet F is discharged onto a stack tray  4 . 
     A roller  5  shown in the uppermost portion in  FIG. 1  is a discharge roller of the punching device. A sheet of paper discharged from the punching device is conveyed obliquely downward along a sheet guide  12  of the binding processing device  11  and arrives at a sheet feed roller  13 . Right before the sheet feed roller  13 , a sheet detection sensor  14  is arranged. When the sheet detection sensor  14  detects a sheet of paper, one cycle of binding processing is carried out. The sheet of paper, which has been drawn by the sheet feed roller  13 , is guided onto a sheet table  17  by a sheet guide  16  provided in a sheet guide unit  15 . Then, the sheet of paper falls down by its own weight and comes into contact with a sheet forward end position regulating plate  19  arranged on the front face (the upper portion in the drawing) of a binding mechanism section  18 . 
       FIG. 2  is a partially enlarged view of  FIG. 1 . The opening and closing type sheet guide unit  15  is arranged on the sheet table  17 . On the downstream and the upstream side in the sheet guide unit  15 , rotary type flaps  20 ,  21  are arranged. The rotary type flap  20  on the downstream side turns by one revolution and rubs an upper face of the sheet of paper to the front each time the sheet of paper is fed into the rotary type flap  20 . Therefore, the sheet of paper comes into contact with the sheet forward end position regulating plate  19 . The rotary type flap  21  arranged on the upstream side reciprocates upward and downward each time the sheet of paper is fed into the rotary type flap  21 . Therefore, the rotary type flap  21  presses a rear end portion of the sheet of paper onto the sheet table  17  so as to prevent the sheet of paper from rising up. The sheet guide unit  15  includes positioning plates  22 ,  23  (shown in  FIGS. 6 to 8 ) for positioning the sheet of paper by interposing the sheet of paper in the lateral direction. 
     The binder mechanism section  18  is arranged being opposed to a front end portion of the sheet table  17 . A binder cartridge  24  comes into contact with a back face of the binder mechanism section  18 . In the binder cartridge  24 , ring binders B are charged being laminated in the longitudinal direction. Each ring binder B has a shape in which a ring is divided into three pieces. The ring binders B are pushed upward by a spring and pusher (not shown) provided in the binder cartridge  24 . 
     The binding mechanism section  18  includes: a pair of pushers  25 ; and a pair of sliding type separators  26 . When the upper and lower separators  26  are closed, the ring binder in the front row is separated from the ring binder in the next row. The sheet table  17  can be moved forward to and backward from the binding mechanism section  18  by a sheet table moving mechanism. The sheet table  17  can be rotated from a position, at which the sheet table  17  is opposed to the binding mechanism section  18 , by a sheet table rotating mechanism. 
     After a predetermined number of punched sheets have been fed onto the sheet table  17 , the sheet table  17  is driven forward along the guide groove  28  of the frame  27 , and end faces on the downstream side of the sheets of paper on the sheet table  17  come into contact with the front face of the binder cartridge  24 . At this time, punch holes of the sheets of paper are located between the upper and the lower pusher  25 . When the upper and the lower pusher  25  are driven being closed, the divided ring portion of the ring binder B is closed. Therefore, a protruded portion and a recessed portion of the forward end portions of the divided ring portions, which are opposed to each other, are engaged with each other and fixed into a ring shape. In this way, the sheets of paper are bound. 
     Next, the sheet positioning mechanism will be explained below. Sheets of paper are positioned by the sheet forward end position regulating plate  19  arranged on the front face of the binding mechanism section  18 , by the sheet clamp  29  arranged in the front portion of the sheet table  17  and by the positioning plates  22 ,  23  arranged on the right and the left of the sheet guide unit  15 . That is, the sheet forward end position regulating plate  19  composes a first positioning mechanism for positioning sheets of paper in the conveyance direction, and the positioning plates  22 ,  23  arranged on the right and the left compose a second positioning mechanism for positioning sheets of paper in a direction perpendicular to the conveyance direction of the sheets of paper. 
       FIG. 4A  is a view showing the sheet forward end position regulating plate  19  in a state of retraction in which the sheet forward end position regulating plate  19  is lowered, and  FIG. 4B  is a view showing the sheet forward end position regulating plate  19  in a state of operation in which the sheet forward end position regulating plate  19  is raised. A forward end portion of the lever  31 , which is rotated by a motor  30 , is engaged with the sheet forward end position regulating plate  19 . According to the rotary direction of the lever  31 , the sheet forward end position regulating plate  19  is raised or lowered along the sliding guide  32 . 
       FIG. 5A  is a view showing the sheet clamp  29  in an open state in which the sheet clamp  29  is raised, and  FIG. 5B  is a view showing the sheet clamp  29  in a closed state in which the sheet clamp  29  is lowered. The sheet clamp  29  is connected to the motor  36  via a lever  33 , a link  34  and a crank shaft  35 . According to the rotary direction of the motor  36  and the crank shaft  35 , the clamp  29  is raised or lowered. 
       FIGS. 6 to 8  are views for explaining the operation of sheet positioning. Reference numeral  22  is a positioning plate for positioning the sheets of paper at a reference position in a direction perpendicular to the sheet conveyance direction, and reference numeral  23  is a movable positioning plate for pushing the sheets of paper onto the reference positioning plate  22 . The positioning plate  22  is positioned so that positions of the punch holes of the sheets of paper on the sheet table  17  and positions of the pushers  25  of the binding mechanism section  18  can be made to agree with each other in the direction perpendicular to the sheet conveyance direction. 
     As shown in  FIG. 7 , each time the sheet of paper P is fed onto the sheet table  17 , the movable positioning plate  23  is separated with respect to the reference positioning plate  22 , and then the movable positioning plate  23  comes close to the reference positioning plate  22  as shown in  FIG. 8 , that is, the movable positioning plate  23  conducts one reciprocating motion. In this way, a side of the sheet of paper P is pressed for positioning onto the reference positioning plate  22  by the movable positioning plate  23 . In this connection, as shown in  FIG. 8 , a feed roller  37 , which is arranged being oblique with respect to the sheet conveyance direction, may be provided on the sheet table  17 , and the sheet of paper may be positively moved to the reference position by rotating the feed roller  37 . 
     After all sheets of paper, the number of which is predetermined, to be subjected to the binding processing have been stacked on the sheet table  17 , the sheet clamp  29  is lowered and clamps one set of sheets of paper. Then, the sheet forward end position regulating plate  19  is lowered and retracted from front ends of sheets of paper, and the sheet table  17  advances forward and the front ends of sheets of paper are contacted with a front face of the binding processing mechanism section  18 . After that, the ring binder is attached into the punch holes of the sheets of paper by the pushers  25  of the binding processing mechanism section  18 . 
     After the completion of binding processing, as shown in  FIG. 3 , the sheet guide unit  15  and the sheet table  17  are rotated upward and the sheet clamp  29  is raised from the sheet table  17 , so that the sheets of paper can be released from the sheet table  17 . Due to the foregoing, the sheets of paper fall onto a stack tray (not shown). In this connection, before the completion of binding processing, the sheet guide unit  15  may be raised, and after the completion of binding processing, the sheet table  17  may be raised. 
     Embodiment 2 
     The binding processing device  41  shown in  FIG. 9  is composed in such a manner that a mechanism capable of solving the problem of small deviation of punch holes on each sheet of paper is provided in addition to the structure of Embodiment 1. In the upstream of the sheet forward end position regulating plate  19  arranged on the front face of the binding mechanism section  18 , a lower side positioning pin  42 , which is located below the sheet table  17 , and an upper side positioning pin  43 , which is located above the sheet table  17 , are arranged. One lower side positioning pin  42  is arranged on the right and one lower side positioning pin  42  is arranged on the left. One upper side positioning pin  43  is arranged on the right and one upper side positioning pin  43  is arranged on the left. Alternatively, a plurality o f lower side positioning pins  42  are arranged on the right and a plurality of lower side positioning pins  42  are arranged on the left. A plurality of upper side positioning pins  43  are arranged on the right and a plurality of upper side positioning pin  43  are arranged on the left. For example, the lower side positioning pins  42  are inserted into the punch holes on both sides of the sheets of paper, and the upper side positioning pins  43  are inserted into the punch holes except for the punch holes formed on both sides of the sheets of paper, so that the upper guide pins and the lower guide pins can not interfere with each other. In this connection, like reference characters are used to indicate like parts in Embodiments 1 and 2, and the explanations are omitted here. 
       FIG. 10A  is a view showing a lower side positioning pin  42  in an operation state in which the lower side positioning pin  42  is raised, and  FIG. 10B  is a view showing a lower side positioning pin  42  in a retraction state in which the lower side positioning pin  42  is lowered. A forward end of the lever  45 , which is rotated by the motor  44 , is engaged with the lower side positioning pin  42 . According to the rotary direction of the lever  44 , the lower side positioning pin  42  is raised or lowered along the slide guide  46 . 
       FIG. 11A  is a view showing a state of retraction in which the upper side positioning pin  43  is raised, and  FIG. 11B  is a view showing a state of operation in which the upper side positioning pin  43  is lowered. The upper side positioning pin  43  is connected to a lever  48 , which is rotated by the motor  47 , via a link  49 . According to the rotary directions of the motor  47  and the lever  48 , the upper side positioning pin  43  is raised or lowered along a slide guide  50 . 
     A diameter of the lower side positioning pin  42  is a little smaller than the diameter of a punch hole formed on the sheet of paper. Therefore, when the lower side positioning pin  42  is inserted into the punch hole, the sheets of paper can be a little moved in the longitudinal and in the lateral direction. A diameter of the upper side positioning pin  43  is a little smaller than the diameter of a punch hole formed on the sheets of paper. Therefore, when the upper side positioning pin  43  is inserted into the punch hole, the sheets of paper can be accurately positioned. When forward end portions of the upper and the lower positioning pin  43 ,  42  are chamfered or formed into an R-shape, the upper and the lower positioning pin  43 ,  42  can be easily inserted into the punch holes. 
       FIGS. 12 to 14  are views for explaining the operation of positioning sheets of paper. Reference numeral  22  is a reference positioning plate for positioning the sheets of paper in a direction perpendicular to the sheet conveyance direction. Reference numeral  23  is a movable positioning plate for pushing the sheets of paper to the reference positioning plate  22 . A distance between the reference positioning plate  22  and the upper and the lower positioning pin  43 ,  42  in the sheet width direction is somewhat larger than a distance between the punch holes on the sheets of paper corresponding to the upper and the lower positioning pin  43 ,  42  and the sides of the sheets of paper. A longitudinal interval between the sheet forward end position regulating plate  19 , which is provided in the front portion, and the upper and the lower positioning pin  43 ,  42  is set a little longer than a distance between the front end of the sheets of paper and the punch hole center. Therefore, under the condition that the lower side positioning pins  42  are inserted into the punch holes formed on the sheets of paper, the sheets of paper can be minutely moved in the longitudinal and in the lateral direction round the reference position. 
     As shown in  FIG. 12 , when the sheets of paper P are fed onto the sheet table  17 , the movable positioning plate  23  pushes the sheets of paper P to the reference positioning plate  22 . At this time, the lower side positioning pins  42  are driven being raised so that they can be a little protruded onto the sheet table  17 , and the upper side positioning pins  43  are driven being lowered so that they can be inserted into the punch holes on the sheets of paper P and push down the sheets of paper P. At this time, the sheets of paper can be positioned being corrected so that the punch hole centers can be made to agree with the centers of the upper side positioning pins  43 . After the upper side positioning pins  43  have been lowered, the sheet clamp  29  holds the sheets of paper and the upper side positioning pins  43  are raised being retracted. At the same time, the sheet clamp  29  is also retracted so as to prepare for the next sheets of paper. 
     Successively, when the next sheets of paper P are sent in as shown in  FIG. 13 , the sheets of paper P are pushed to the reference positioning plate and the sheet forward end position regulating plate, which is provided in the front portion, as shown in  FIG. 14 . Then, the position correcting process, which includes driving of the upper side positioning pin  43 , holding of the sheets of paper and retracting the upper side positioning pins  43 , is repeated. Due to the foregoing, even when errors are made in the punch hole positions and in the cutting sizes of the sheets of paper, the centers of the punch holes on the stacked sheets of paper can be accurately made to agree with each other. Accordingly, there is no possibility that a binder is defectively attached in the binder attaching process. 
     Embodiment 3 
       FIG. 15  is a view showing an embodiment of a discharging operation of a booklet which has been subjected to binding processing. The booklet discharge mechanism includes a stack tray  4 , rollers  51  and a belt  52 . The stack tray  4  is composed in such a manner that the wide belt  52  is provided between the rollers  51  which are arranged in the longitudinal direction and the rollers  51  are driven by a motor so as to rotate the belt  52 . The control section of the binding processing apparatus  1  controls a belt drive mechanism so that an upper face of the belt  52  can be a little moved to the front each time every booklet F is discharged. Due to the above operation, as shown in the drawing, the booklets F are laminated on the stack tray  4  being a little shifted from each other. Therefore, the lamination height of the entire booklets can be reduced. 
     Embodiment 4 
     The booklet discharge mechanism of the binding processing apparatus  1  shown in  FIGS. 16 and 17  includes a container  53 , rollers  54 , a belt  55  and slats  56 . The discharged booklets are accommodated upright in the container. As shown in  FIGS. 17A and 17B , in the container  53 , the belt  55  is provided between the rollers  54  which are arranged in the longitudinal direction at both end portions in the lateral direction. The right and the left belt  55  are symmetrically, synchronously rotated. Slats  56  are attached to the belt  55  at regular intervals. Therefore, both end portions on the right and the left of the booklets F are inserted into between the continuous slats so that the booklets F can be accommodated upright. The belts  55  are also controlled by the control section of the binding processing apparatus  1 . Therefore, each time one booklet is discharged, the inside faces of the right and the left belt  55  are moved by a predetermined distance (an interval between the slats). Due to the foregoing, the booklets are accommodated in the container  53  being divided and arranged in the longitudinal direction. 
     Embodiment 5 
       FIG. 18  is a view showing another embodiment of the present invention. The booklet discharge mechanism includes sheet discharge rollers  57  mounted on a shaft  58 . The sheet discharge rollers  57  are arranged being capable of sliding in the lateral direction with respect to the drive shaft. Each time one booklet is discharged, while the sheet discharge rollers  57  are coming into elastic contact with the booklet, the booklet is alternately slid in the lateral direction and discharged. Due to the foregoing, under the condition that the ring portions of the ring binders B of the booklets F are alternately shifted zigzag in the lateral direction, the booklets F are stacked on the stack tray, and the volume can be reduced. 
     In this connection, it should be noted that the present invention is not limited to the above specific embodiments. Variations may be made by those skilled in the art without departing from the spirit and scope of the invention. Of course, the present invention covers those variations. 
     The present application is based on Japanese Patent Application (Patent Application No. 2004-022156) filed on Jan. 29, 2004. The contents of which are incorporated herein by reference. 
     INDUSTRIAL APPLICABILITY 
     In the binding processing apparatus of the present invention, the positioning means is composed so that the positional relation between sheets of paper and a binder at the time of attaching the binder can be made to be the same as the positional relation between the sheets of paper and a punch at the time of punching the sheets of paper. Therefore, when the binder is attached to the sheets of paper, positions of punch holes can be made to accurately agree with positions of ring portions of a division type ring binder. Accordingly, there is no possibility that the division type ring binder is defectively attached to the sheets of paper. 
     When the binding processing apparatus is composed so that booklets, which have been subjected to the binding processing, can be successively shifted to each other in the lateral and in the longitudinal direction, ring binders attached to the booklets do not interfere with each other. Alternatively, ring binders attached to the booklets are not overlapped on each other. Therefore, the height and volume of the stacked booklets can be reduced and the booklets can be easily handled.