Patent Publication Number: US-7896328-B2

Title: Postprocessing device and image forming device

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is based on and claims priority under 35 USC 119 from Japanese Patent Application No. 2007-292952 filed Nov. 12, 2007. 
     BACKGROUND 
     1. Technical Field 
     The present invention relates to a postprocessing device and an image forming device. 
     2. Related Art 
     A postprocessing device, in cooperation with an image forming device, to recording sheets on which an image is formed by the image forming device, performs a postprocess to sort, fold, or staple the recording sheets. 
     SUMMARY 
     The present invention provides a postprocessing device, and an image forming device, that can simplify adjustment work of a folding process of recording sheets. 
     According to an aspect of the invention, there is provided a postprocessing device including, a postprocessing unit that performs a postprocess including a preset folding process at a set folding position, with respect to recording sheets, a setting unit that sets an adjustment amount of the folding position on the basis of a target value of the folding position, a measured value of the folding position after the folding process, and sheet quality information of the recording sheets, an adjusting unit that adjusts the folding position of the postprocessing unit on the basis of the adjustment amount set by the setting unit, and an adjustment control unit that controls the adjustment by the adjusting unit on the basis of the adjustment amount set by the setting unit. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Exemplary Embodiments of the present invention will be described in detail based on the following figures, wherein: 
         FIG. 1  is a schematic figure showing an outline structure of an image forming device according to a first exemplary embodiment. 
         FIG. 2A  is a schematic figure showing an outline structure of a folding mechanism that performs a folding process of recording sheets according to the first exemplary embodiment. 
         FIG. 2B  is a schematic figure showing an outline structure of a folding mechanism that performs a folding process of recording sheets according to the first exemplary embodiment. 
         FIG. 3  is a functional block diagram showing a function of an adjustment process of a folding position according to the first exemplary embodiment. 
         FIG. 4  is a flow chart showing a flow of the adjustment process of the folding position according to the first exemplary embodiment. 
         FIG. 5  is a figure showing a setting screen to set the folding position of the recording sheets according to the first exemplary embodiment. 
         FIG. 6  a figure showing a setting screen to confirm and change allocations of sheet trays according to the first exemplary embodiment. 
         FIG. 7  is a figure showing a setting screen to set an unregistered folding position according to the first exemplary embodiment. 
         FIG. 8  is a figure showing a setting screen to confirm and change setting contents of the folding position according to the first exemplary embodiment. 
         FIG. 9  is a figure showing a setting screen to adjust a three-inward-folding position according to the first exemplary embodiment. 
         FIG. 10  is a figure showing a setting screen to adjust a three-outward-folding position according to the first exemplary embodiment. 
         FIG. 11  is a figure showing a setting screen to adjust a Z-folding position according to the first exemplary embodiment. 
         FIG. 12  is a figure showing a setting screen to adjust a two-folding position according to the first exemplary embodiment. 
         FIG. 13  is a figure showing a setting screen to confirm and change the sheet trays and the numbers of copies at the moment of confirming the print according to the first exemplary embodiment. 
         FIG. 14  is a flow chart showing a flow of an adjustment process of the folding position and binding position in a pamphlet preparation process according to a second exemplary embodiment. 
         FIG. 15  is a figure showing a setting screen to adjust a bookbinding position according to the second exemplary embodiment. 
         FIG. 16  is a figure showing a setting screen to adjust a bookbinding position of two sheets of bundles according to the second exemplary embodiment. 
         FIG. 17  is a figure showing a setting screen to adjust a bookbinding position of 15 sheets of bundles according to the second exemplary embodiment. 
         FIG. 18  is a figure showing a setting screen to adjust a bookbinding position of a set number of bundles according to the second exemplary embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     First Exemplary Embodiment 
       FIG. 1  is a schematic figure showing an example of a structure of an image forming device  10  according to a first exemplary embodiment. 
     The image forming device  10  is structured of a main body  12 , and an additional tray device  14  that is connected to the main body  12 , and a finisher  16  that become a postprocessing device. 
     In this image forming device  10 , an image corresponding to image data that is input into the main body  12  is formed on a recording sheet  18 . In such an image forming device  10 , the main body  12  is connected to various image forming devices such as a personal computer, a server and the like via a network, and on the basis of the image data that are input as print jobs from these image forming devices, a print process is performed. 
     Further, as the image forming device  10 , a scanner (image reading device) equipped with an automatic manuscript feeding function may be connected to the main body  12 , and an image based on the image data of the manuscript that is read and generated by this scanner may be formed on the recording sheet  18 . 
     In the device main bodies  12  of the image forming device  10 , an image forming unit  20  that forms images onto recording sheets  18  by an electronographic process, and a tray unit  24  that is equipped with plural trays  22  to contain many recording sheets  18  are arranged, and the main body  12  forms an image forming device of a stand-alone simple structure. 
     In the tray unit  24 , as an example of plural trays  22 , trays  22 A,  22 B to contain the recording sheets  18  of a comparatively large size, and trays  22 C,  22 D to contain the recording sheets  18  of a comparatively small size are arranged, and many recording sheets  18  are laminated and contained in the trays  22 A through  22 D respectively. 
     In addition, in the additional tray device  14  connected to the main body  12 , trays  22 E,  22 F in which many recording sheets  18  can be contained, and a tray  22 G for manual sheet feeding are arranged. Meanwhile, hereinafter, the trays  22 A- 22 G including the tray  22 G for manual sheet feeding are referred generally as trays  22 . 
     In the trays  22 , feed rollers  26  that take out the recording sheets  18  from top layers are arranged, and, and transportation paths  28  to transport the recording sheets  18  taken out from each of the trays  22  to the image forming unit  22 . 
     Thereby, in the main body  12 , the recording sheets  18  are taken out one by one from the trays  22 , and transported (fed) to a predetermined position of the image forming unit  20 . 
     In the image forming unit  20 , developing units  32 Y,  32 M,  32 C,  32 K of respective colors of Y (yellow), M (magenta), C (cyan) and K (black) are arranged as image forming system devices. In addition, in the image forming unit  20 , an endless transfer belt  34  is arranged as an intermediate holding body. 
     The transfer belt  34  is arranged around roller  36 A,  36 B and a transfer roller  38  at the side of the transportation paths of the recording sheets  18 , and is driven to rotate at a constant speed in the arrow A direction. In addition, the transfer belt  34  contacts with photo receptor drums  40 Y,  40 M,  40 C,  40 K arranged in the developing units  32 Y,  32 M,  32 C,  32 K. 
     Into the image forming unit  20 , image signals (raster data) of the respective colors of Y, M, C, K generated on the basis of the image data are input, and in the image forming unit  20 , on the basis of these image signals, in the respective developing units  32 Y,  32 M,  32 C,  32 K, toner images of the respective colors of Y, M, C, K are formed on the photo receptor drums  40 Y,  40 M,  40 C,  40 K, and the respective toner images are superimposed and transferred on the transfer belt  34 . 
     In addition, in the image forming unit  20 , a roller (bias transfer roller)  38 A is arranged to oppose the transfer roller  38 , and a recording sheet  18  taken out from the tray  22  is sent into between the transfer roller  38  and the bias transfer roller  38 A, and it is pinched by the transfer roller  38  and the bias transfer roller  38 A together with the transfer belt  34 . 
     Thereby, the recording sheet  18  is sent out, while the toner image of the transfer belt  34  is copied thereunto. In addition, the transfer belt  34  is structured so as not to affect the image (toner image) to which a joint line is copied substantially. 
     In the image forming unit  20 , a fixation unit  42  is arranged as an image forming system device. The fixation unit  42  is equipped with a pair of fixation rollers  44 , and the recording sheet  18  onto which the toner image is transferred is sent into between this pair of fixation rollers  44 . 
     The fixation unit  42  pinches the recording sheet  18  sent into the interval of the fixation rollers  44  by the fixation rollers  44  and pressurizes and heats it, and fixes the toner image onto the recording sheet  18 . Thereby, an image corresponding to the image data is formed on the recording sheet  18 . In addition, in forming a color image on the recording sheet  18 , the developing units  32 Y,  32 M,  32 C,  32 K are used, meanwhile in forming a black and white image, the developing unit  32 K is used. 
     To such an image forming unit  20 , image formation of the general structure using an electronographic process may be applied, and the explanation thereof is omitted in the first exemplary embodiment. 
     In the main body  12 , a circulation transportation path  46  to transport the recording sheet  18  that has passed the image forming unit  20 , to the image forming unit  20  again is formed. In the transportation path  46 , the recording sheet  18  that passes the fixation unit  42  is sent into, and this recording sheet  18  is reversed, and sent into the transportation path  28 . In other words, in the circulation transportation path  46 , when the the recording sheet  18  passes the image forming unit  20  for the first time, the recording sheet  18  is reversed so that the surface thereof that opposes the transfer belt  34  becomes the reverse side of the transfer belt  34 . 
     Thereby, in the main body  12 , duplex printing to form an image in each of both the sides of the recording sheet  18  is possible. 
     On the other hand, when the image formation (print process) to the recording sheet  18  is finished, the main body  12  sends this recording sheet  18  to the finisher  16 . 
     In the finisher  16 , a output tray  48  that laminates and accumulates many recording sheets  18  is arranged. 
     In addition, in the finisher  16 , a pamphlet preparation unit  50 , a staple unit  52 , and a folding unit  54  are arranged as a postprocessing device for the recording sheets  18 . In the pamphlet preparation unit  50 , a preset number of the recording sheets  18  are piled up and bound, and then folded into two and the like, and are output to the tray  58  in the form of a pamphlet. 
     In the staple unit  52 , the preset number of the recording sheets  18  are piled up, and preset positions of the margin of the piled recording sheets  18  are stapled and the recording sheets  18  are output to the tray  58 . 
     In addition, in the folding unit  54 , the recording sheets  18  are folded into preset folding types such as two-folding, Z-folding and other folding types, and then output to the tray  58 . 
     Meanwhile, the Z-folding and other folding types may be performed by the pamphlet preparation unit  50 . In addition, as for the pamphlet preparation unit  50 , the staple unit  52  and the folding unit  54  of the finisher  16 , conventionally well-known structures may be used. In addition, the finisher  16  may have other postprocessing functions, and in such a case, necessary devices may be arranged. In addition, the output from the pamphlet preparation unit  50 , the staple unit  52 , and the folding unit  54  is not limited to the tray  58 , but may be changed to the tray  48  appropriately. 
       FIG. 2A  and  FIG. 2B  are each a schematic figure showing an outline structure of a folding mechanism that performs the folding process of the recording sheets  18 . 
     As shown in  FIG. 2A , the recording sheets  18  are transported when a pair of transportation rollers  62  are rotated in the arrow B direction, and are hit against a gate  64 . When the recording sheets  18  are knocked against the gate  64 , the transportation stops. When the transportation of the recording sheets  18  stops, as shown in  FIG. 2B , a knife-shaped folding member  68  moves to a pair of rolls  66  in the arrow C direction, and push the recording sheets  18  into the folding rolls  66 . Meanwhile, the transportation rollers  62  do not disturb the movement of the recording sheets  18  by a one-way clutch mechanism and the like. As a result, the recording sheets  18  are turned in by the rolls  66 . 
     The folding position of the recording sheets  18  is decided by the amount of deflection at which they are pushed out from the transportation rollers  62 . It is ideal that the recording sheets  18  do not bend, but they may bend due to quality of sheet (unbending strength, thickness, basis weight and the like of the recording sheets  18 ), and the amount of deflection thereof differs. Therefore, it is necessary to adjust the folding position according to the quality of sheet of the recording sheets  18 . 
       FIG. 3  is a functional block diagram showing the function of the adjustment process of the folding position according to the first exemplary embodiment. 
     A UI (user interface)  100  of the main body  12  is connected to a setting unit  102 , a memory control unit  106 , a correcting unit  112  of the finisher  16 . The UI  100  is an operation screen of a touch panel piled on a display panel consisting of a liquid crystal display panel not illustrate but arranged in the main body  12 , and instructions such as image forming processing and postprocessing and the like are input therein. When the adjustment process of the folding position is performed, the UI  100  sends out the kinds of folding process to the setting unit  102 , e.g. the target value of the folding position, the measured values of the folding position after the folding process, the sheet quality information of the recording sheets  18 , sends out the information of the tray  22  in which the recording sheets  18  are contained to the memory control unit  106 , and sends out the number of the recording sheets  18  to the correcting unit  112 . 
     The setting unit  102  is connected to the memory control unit  106 , the adjustment unit  104 , and the correcting unit  112 . The setting unit  102  calculates the adjustment amount from the difference between the target value of the folding position of the recording sheets  18  sent out by using the UI  100 , and the measured values of the folding position after the folding process, and sets the adjustment amount on the basis of the sheet quality information of the recording sheets  18 . The setting unit  102  sends out the set adjustment amount to the correcting unit  112 . In addition, the setting unit  102  sends out the adjustment amount sent out from the correcting unit  112  to the adjustment unit  104  and the memory control unit  106 . 
     The correcting unit  112  corrects the adjustment amount sent out from the setting unit  102  on the basis of the number of the recording sheets  18  sent out from the UT  100 . The correcting unit  112  sends out the corrected adjustment amount to the setting unit  102 . 
     Thus, the correcting unit  112  corrects the adjustment amount according to the number of the recording sheets to be turned in, and accordingly, it is possible to obtain more precise an adjustment amount than in the case where the adjustment amount is not corrected according to the number of the recording sheets. 
     The adjustment unit  104  is connected to a postprocessing unit  108 . The adjustment unit  104  adjusts the folding position that the postprocessing unit  108  on the basis of the adjustment amount set by the setting unit  102 . 
     The postprocessing unit  108  performs a folding process in the the folding unit  54  (refer to  FIG. 1 ) on the basis of the folding position adjusted by the adjustment unit  104 . 
     The memory control unit  106  makes the connection between the adjustment amount set by the setting unit  102 , and the information of the tray  22  in which the recording sheets  18  sent out from the UT  100  are contained, and stores them into a nonvolatile memory. 
     Thus, the memory control unit  106  uses sheet trays as identification information, and accordingly, it is possible to cope with a use method in which the same recording sheets are contained in a same sheet tray. 
     The adjustment control unit  110  controls the processes in the setting unit  102 , the adjustment unit  104 , the memory control unit  106 , the postprocessing unit  108 , and the correcting unit  112 . 
     Hereinafter, the action of the first exemplary embodiment is explained. 
     In the image forming device  10 , when image data is input into the main body  12 , an image is formed by the image forming unit  20  on the basis of the input image data, and the recording sheet  18  is transported from the tray  22 , and the formed image is transferred onto the recording sheet  18 , and thereby, the image formation (print processing) is completed. 
     When other postprocessing instruction than the imaging instruction is input from the UT  100 , the recording sheets  18  one which an image is formed are sent into the finisher  16 . 
     In the finisher  16 , according to the postprocessing instructions input from the UT  100 , in the case of the folding process, the postprocessing is carried out by the folding unit  54 , and in the case of the stapling process, the postprocessing is carried out by the staple unit  52 , and in the case of the pamphlet preparation process where a preset number of the recording sheets  18  are piled up and bound, and then folded into two, the postprocessing is carried out by the pamphlet preparation unit  50 . 
     In the postprocesses, when the recording sheets  18  after the folding process are checked, there are cases where the folding process is not carried out at a desired folding position, and the folding position should be adjusted. The folding position has been so far adjusted by a customer service engineer, but the folding position can be adjusted by using the UT  100 . 
     In addition, the adjustment of the folding position may be applicable to the case when the folding position set for recording sheets  18  as standard at the time of factory shipment of the image forming device  10  is adjusted, or the case when the folding position is changed to the adjustment amount that is previously adjusted, or when a displacement of the folding position that occurs as time goes by is adjusted. 
       FIG. 4  is a flow chart showing a flow of the adjustment process of the folding process. 
     At step  200 , an item corresponding to the recording sheets  18  for which the folding process is adjusted is selected. The selection of the recording sheets  18  is carried out in an item selection screen of the recording sheets  18  shown in  FIG. 5 . 
     As shown in a selection area  120  of  FIG. 5 , as for the recording sheets  18  whose folding process is adjusted, their names may be changed into “pamphlet”, “catalogue” and the like according to uses of the recording sheets  18 . In addition, as for the recording sheets  18  whose folding process is not adjusted yet, they are displayed as “(not registered yet)”, Further, as for the recording sheets  18  whose folding process is carried out, but their name are not changed, they are displayed as “(name not set yet)” automatically, and they are displayed so that they are distinguished from “(not registered yet)” that shows the folding process is not adjusted yet. 
     In addition, the item of the recording sheets  18  whose folding process is adjusted may be deleted by pushing a delete button  123 . In addition, the adjustment amount can be changed newly and the adjustment that is previously registered can be changed. 
     In addition, adjustment may be assigned to the tray  22  containing the recording sheets  18  as shown in  FIG. 6 . When the item of the recording sheets  18  assigned to the tray  22  is selected in a selection area  120  shown in  FIG. 5 , and the delete button  123  is pressed, a warning is displayed, and it is not deleted. 
     That is, in the case of the deletion process, if the sheet tray to which identification information of the deletion objective is assigned is in its loading state, a warning is given prior to the deletion process. In addition, in this case, the deletion process may be prohibited, and a warning may be given. On the other hand, the deletion process is admited if the sheet tray to which the identification information of the deletion objective is assigned is not in its loading state. 
     By doing so, in the case where the sheet tray to which identification information of the deletion objective is assigned is in its loading state, it is possible to prevent deletion by mistake, and in the case where the sheet tray to which identification information of the deletion objective is assigned is not in its loading state, it is possible to delete unnecessary settings by admitting the deletion process. 
     At the step  200 , when, in the selection screen of the recording sheets  18  shown in  FIG. 5 , an item corresponding to the recording sheets  18  whose changed adjustment value is to be changed, or an item corresponding to the recording sheets  18  to be adjusted newly is selected, and a confirmation/change button  122  is pressed, the process shifts to step  202 . 
     At the step  202 , the folding process to be adjusted is selected. The selection of the folding process is carried out in  FIG. 7  or  FIG. 8 . 
       FIG. 7  is the selection screen of the folding process when the adjustment of the folding process is carried out newly. In the selection area  124  of the selection screen of the folding process shown in  FIG. 7 , the folding process to be adjusted is selected, and the confirmation/change button  122  is pressed. 
       FIG. 8  is the selection screen of the folding process when the adjustment value of the adjusted folding process is changed. As shown in  FIG. 8 , the adjustment value that is previously adjusted is displayed in the selection area  124 , and the folding process whose adjustment is carried out is selected. The folding process is selected, and the confirmation/change button  122  is pressed. 
     At the step  202 , when the folding process to be adjusted is selected, the process shifts to step  204 . 
     At the step  204 , an adjustment screen of the folding process selected at the step  202  is displayed. As for the adjustment screen of the folding processing, an adjustment screen (any of  FIG. 9-FIG .  12 ) is displayed according to the selected folding process. 
       FIG. 9  shows an adjustment screen in case of three-inward-folding, and  FIG. 10  shows the adjustment screen of three-outward-folding, and  FIG. 11  shows an adjustment screen in case of the Z-folding, and  FIG. 12  shows an adjustment screen in case of two-folding. 
     An adjustment screen (any of  FIG. 9-FIG .  12 ) of the folding process selected at the step  204  is displayed, and the process shifts to step  206 . 
     At the step  206 , the target value (in  FIG. 9-FIG .  11 , “value A/value B of the output sheet to be finished”) of the folding position to be carried out in the folding process is input. 
     In an operation instruction area  140  displayed in the adjustment screen in case of the three-inward-folding shown in  FIG. 9  and in the adjustment screen in case of the three-outward-folding shown in  FIG. 10 , the folding position at which the folding process is carried out is confirmed. The respective values of the value A and the value B shown in the operation instruction area  140  are confirmed, and changed as necessary in a target value input area  142 . In the target value input area  142 , a previous adjusted value is input when the value is previously adjusted, and a default value is input when the value is adjusted newly. In the case of changing the target value, the value A is input by use of a pullup button  142 A and a pulldown button  142 B in the target value input area  142 , and the value B is input by use of a pullup button  142 C and and a pulldown button  142 D. 
     In the operation instruction area  132  displayed in the adjustment screen of the Z-folding shown in  FIG. 11 , the folding position at which the folding process is carried out is confirmed. The respective values of the value A and the value B shown in the operation instruction area  132  are confirmed, and changed as necessary in the target value input area  134 . In a target value input area  134 , a previous adjusted value is input when the value is previously adjusted, and a default value is input when the value is adjusted newly. In the case of changing the target value, the value A is input by use of a pullup button  134 A and a pulldown button  134 B in the target value input area  134 , and the value B is input by use of a pullup button  134 C and and a pulldown button  134 D. 
     In the adjustment screen of the two-folding shown in  FIG. 12 , since it is a premise that the folding process is carried out so that the value A shown in the operation instruction area  146  becomes 0.0 mm, there is no target value input area to input the target value of the folding position explained heretofore, and the target value becomes 0.0 mm. In addition, in the first exemplary embodiment, the target value is set at 0.0 mm, and the screen is structured so as not to accept any input, but, in order to cope with such a case where the folding position is displaced intentionally and holes are made in one sheet of a two-folding sheet for filing, the screen may be structured so that a target value can be input. 
     At step  206 , the target value is input, and the step shift to step  208 . 
     At the step  208 , a confirmation print button  126  displayed in the selected adjustment screen is pressed, and a confirmation print is carried out. When the confirmation print is carried out, a selection screen of the recording sheets  18  shown in  FIG. 13  is displayed, and the process shifts to step  210 . 
     At the step  210 , the recording sheets  18  on which the confirmation print is carried out are selected in a selection screen of the recording sheets  18  shown in  FIG. 13 . 
     As shown in  FIG. 13 , in the selection screen of the recording sheets  18 , it is possible to confirm the recording sheets  18  contained in the set tray  22 . In addition, as necessary, it is possible to change the recording sheets  18 , by pressing a selection button  128 A in the selection area  128 . Furthermore, when changing the number of the recording sheets  18  to be output by the confirmation print process, it is possible to change the number of copies, by pressing a pullup button  130 A and a pulldown button  130 B in a number of copies change area  130 . When the recording sheets  18  are confirmed, or changed, and a close button  131  is pressed, the folding process is carried out to the recording sheets  18 , and the recording sheets  18  to which the folding process has been carried out are output, and the adjustment screen on which the folding process has been changed is displayed again. As for the recording sheets  18  to which the folding process has been carried out, a marker is printed on the top surface of the recording sheets  18  so that the processed top surface can be distinguished. 
     At step  210 , when the recording sheets on which the confirmation print is carried out is selected, the process shifts to step  212 . 
     At step  212 , an adjustment screen (any of  FIG. 9-FIG .  12 ) selected at the step  204  is displayed, the folding position of the recording sheets  18  output by carrying out the confirmation print is measured, and the measured value of the folding position (“value A/value B of the confirmation print output sheets” in  FIG. 9-FIG .  11  and “value A of the confirmation print output sheets” in  FIG. 12  are displayed) is input. The measurement of the folding position of the recording sheets  18  is performed with the marker printed on the output recording sheets  18  as the upper surface. 
     In the adjustment screen in the case of the three-inward-folding shown in  FIG. 9 , and in the adjustment screen in the case of the three-outward-folding shown in  FIG. 10 , the measured value A is input by use of a pullup button  144 A and a pulldown button  144 B in a measured value input area  144 , and the value B of the measured value is input by use of a pullup button  144 C and a pulldown button  144 D. 
     In the adjustment screen in the case of the Z-folding shown in  FIG. 11 , the measured value A is input by use of a pullup button  136 A and a pulldown button  136 B in the measured value input area  136 , and the value B of the measured value is input by use of a pullup button  136 C and a pulldown button  136 D. 
     In the adjustment screen in the case of the two-folding shown in  FIG. 12 , by use of an instruction button  146 A in the operation instruction area  146 , it is instructed whether the value A has a long top or a long bottom. Next, the measured value A is input by use of a pullup button  148 A and a pulldown button  148 B in the measured value input area  148 . In addition, in the two-folding process, since plural recording sheets  18  can be folded into two as one bundle, the number of the recording sheets  18  in the bundle is input by use of a pullup button  150 A and a pulldown button  150 B in the number of sheets appointment area  150 . Meanwhile, the number of sheets of one bundle of the recording sheets  18  is appointed as 1-5 sheets in  FIG. 12  of the first exemplary embodiment, but the present invention is not limited to this, and it may be made to be processable. 
     At step  212 , the output recording sheets  18  are measured, and when the measured value is input, the process shifts to step  214 . 
     At the step  214 , an adjustment button  138  displayed in the adjustment screen of the selected folding process is pressed, and the process shifts to step  216 . 
     At the step  216 , the setting unit  102  sets an adjustment amount from the target value of the folding position input at the step  206 , and the measured value input at the step  212 , and the process shifts to step  218 . 
     At the step  218 , the folding position is adjusted from the adjustment amount that the setting unit  102  sets, and the process shifts to step  220 . 
     At the step  220 , the memory control unit  106  stores the folding position that the setting unit  102  sets, the kinds of folding, and the tray information of the tray in which the recording sheets  18  are contained into the nonvolatile memory, and the process shifts to step  222 . 
     At the step  222 , a close button  141  of the adjustment screen of the selection folding process is pressed, and this routine is finished. 
     In the folding process, from the measured value of the folding position obtained by measuring the recording sheets  18  after the folding process, and from the input target value or the target value of the preset folding position, the adjustment amount of the folding position is set, and thereby it is possible to adjust the folding position, and simplify the adjustment work of the folding processing of the recording sheets. 
     In addition, since the UI including an input device to input setting information an output device to display information is equipped, it is possible to simplify the settings, in comparison with the case without being equipped with a user interface. 
     Second Exemplary Embodiment 
     In the above first exemplary embodiment, the adjustment of the folding position at which one sheet of the recording sheets  18  is folded basically, as long as the setting of the number of sheets is not changed. In a second exemplary embodiment, the adjustment of the folding position and the binding position in the pamphlet preparation process of a combined process where a preset number of the recording sheets  18  are piled up and bound with staples, and then folded into two is explained. 
     Meanwhile, in this second exemplary embodiment, it should be noted that the same numerals are given to the same components as those in the first exemplary embodiments for omitting the repeated explanations thereof in all drawings for explaining the embodiments. 
     In this second exemplary embodiment, in addition to the two-folding process of a set number of recording sheets  18 , a binding process where sheets are bound with staples is carried out. As for the two-folding process, there is no difference in the folding position of the recording sheets after the folding process, and as for the binding position, two-folding positions are bound. Therefore, to the UI  100  of the functional block figure (refer to  FIG. 3 ) of the first exemplary embodiment, the respective measured values of the folding position and the binding position after the pamphlet preparation process, the sheet quality information of the recording sheets  18 , the information of the tray  22  in which the recording sheets  18  are contained, and the number of the recording sheets  18  are input. The UI  100  sends out the the respective measured values of the folding position and the binding position after the pamphlet preparation process, and the sheet quality information of the recording sheets  18  to the setting unit  102 , sends out the information of the tray  22  in which the recording sheets  18  are contained to the memory control unit  106 , and sends out the number of the recording sheets  18  to the correcting unit  112 . 
     The setting unit  102  calculates the respective adjustment amounts of the folding position and the binding position, on the basis of the respective measured values of the the folding position and the binding position after the pamphlet preparation process sent out from the UI  100 , and the sheet quality sheets  18 , and sends them out to the adjustment unit  104 . 
     The adjustment unit  104  adjusts the folding position and the binding position of the recording sheets  18 , on the basis of the respective adjustment amounts of the folding position and the binding position sent from the setting unit  102 . 
     The postprocessing unit  108  performs the folding process by the pamphlet preparation unit  50  (refer to  FIG. 1 ), on the basis of the adjustment by the adjustment unit  104 . 
     Hereinafter, the action of the second exemplary embodiment is explained. 
     In the image forming device  10 , when image data is input into the main body  12 , an image is formed by the image forming unit  20  on the basis of the input image data, and the recording sheet  18  is transported from the tray  22 , and the formed image is transferred onto the recording sheet  18 , and thereby, the image formation (print processing) is completed. 
     When other postprocessing instruction than the imaging instruction is input from the UI  100 , the recording sheets  18  one which an image is formed are sent into the finisher  16 . 
     In the finisher  16 , according to the postprocessing instructions input from the UI  100 , in the case of the folding process, the postprocessing is carried out by the folding unit  54 , and in the case of the stapling process, the postprocessing is carried out by the staple unit  52 , and in the case of the pamphlet preparation process where a preset number of the recording sheets  18  are piled up and bound, and then folded into two, the postprocessing is carried out by the pamphlet preparation unit  50 . 
     In the postprocesses, there are cases where, when the recording sheets  18  after the pamphlet preparation process are checked, the folding process and the binding process are not carried out at a desired folding position, and the folding position and the binding process should be adjusted. The folding position has been so far adjusted by a customer service engineer, but the folding position can be adjusted by using the UI  100 . 
     In addition, the adjustment of the folding position and the binding position of the pamphlet preparation process may be appliable to the case where the default folding position and binding position set for recording sheets  18  as standard at the time of factory shipment of the image forming device  10  are adjusted, or the case where the folding position and the binding position are changed to the adjustment amounts that are previously adjusted, or when a displacement of the folding position and the binding position that occurs as time goes by is adjusted. 
       FIG. 14  is a flow chart showing a flow of the adjustment process of the folding process and the binding process of the pamphlet preparation process. 
     At step  300 , the recording sheets  18  corresponding to the pamphlet preparation process to be adjusted are selected, in the selection screen of the recording sheets  18  shown in  FIG. 4 . 
     At step  302 , the pamphlet preparation process (displayed as “bookbinding” in  FIG. 7  or  FIG. 8 ) is selected in the postprocessing selection screen shown in  FIG. 7  or  FIG. 8  corresponding to the selected recording sheets  18 . 
     At step  304 , an adjustment screen ( FIG. 15 ) of the pamphlet preparation process is displayed. 
       FIG. 15  is the adjustment screen for carrying out the adjustment of the pamphlet preparation process. When in a setting area  152 , as shown in  FIG. 15 , a two-sheet bundle (selection button  152 A), or a 15-sheet bundle (selection button  152 B) which are the numbers of the recording sheets to be bound as a bundle of one pamphlet is selected, the adjustment is carried out. The reason why the setting of a two-sheet bundle is performed as one bundle is that at least two or more recording sheets  18  are bound as one pamphlet. In addition, the reason why the setting of a 15-sheet bundle is performed as one bundle is that the processable maximum number of the recording sheets  18  is 15 sheets. 
     By setting the adjustment amounts of the binding process of two numbers of recording sheets at the minimum value and the maximum value at which the binding process can be performed, it is possible to perform more precise interpolation than in the case where the setting is not carried out at the minimum value and the maximum value at which the binding process can be performed. 
     Meanwhile, the processable maximum number of sheets is not limited to the 15-sheet bundle, and it can be changed. In particular, for example, in the case where it is known beforehand that linearity of the adjustment value collapses near the processable maximum number of the pamphlet preparation process, a number that is smaller than the processable maximum number of sheets may be set as the number of sheets at which linearity can be maintained. On the contrary, in the case where, even if linearity collapses, the frequency of preparation of pamphlets near the maximum processable number of sheets is high, the adjustment may be performed at two numbers of the recording sheets near the the maximum processable number of sheets intentionally, to make it possible to perform the adjustment more effectively. In addition, as for the adjustment amounts of the two-sheet bundle and the 15-sheet bundle, adjustment amounts for the recording sheets  18  to become the standard are preset as default values. 
     By setting the number of the recording sheets to become the objectives of the adjustment amounts, it is possible to obtain more precise adjustment amounts with respect to the set number of the recording sheets than in the case where the number of the recording sheets is not set. 
     By setting the folding positions and the the binding positions of the two-sheet bundle, and setting the folding positions and the the binding positions of the 15-sheet bundle, the numbers of bundles from two to 15 are interpolated from the set values for the two-sheet bundle and the 15-sheet bundle. 
     By setting the adjustment amounts to the binding process of two numbers of recording sheets of the two-sheet bundle and the 15-sheet bundle, as for the numbers of bundles from two to 15, it is possible to interpolate the numbers on the basis of the set adjusted adjustment amounts, and to omit the adjustment for every of all numbers of sheets in the binding process. 
     In addition, in the case where the preparation of pamphlets by bundling up a specific number of sheets is often carried out, it is possible to perform the adjustment by designating the number of the recording sheets  18  to be bundled by use of a pullup button  160 A and a pulldown button  160 B in the number of sheets setting area  160 , and pressing a selection button  161 . In the case where a specific number of sheets is designated, interpolation is not carried out for the set values from the two-sheet bundle and the 15-sheet bundle, and the adjustment value adjusted by the designated number of sheets is used. 
     In other words, in the adjustment amounts of the binding process of the two numbers of recording sheets, there are default values, and it is possible to omit the process to set the adjustment values with respect to the binding process of the two number of recording sheets. 
     At step  304 , an adjustment screen of the pamphlet preparation process is displayed, and the process shifts to step  306 . 
     At step  306 , it is judged whether or not a confirmation print button  162  to confirm the setting of the two-sheet bundle or the 15-sheet bundle shown in  FIG. 15  has been pressed. In the case of the negative judgment that the confirmation print button  162  has not been pressed, the process shifts to step  308 , and in the case of the affirmative judgment that the confirmation print button  162  has been pressed, the process shifts to step  312 . 
     At the step  308 , it is judged whether or not the number of sheets of one bundle of the recording sheets  18  has been designated by use of a pullup button  160 A and a pulldown button  160 B in the number of sheets setting area  160  shown in  FIG. 15 . In addition, as for the designation of the number of sheets, since the two-sheet bundle and the 15-sheet bundle can be designated by use of a setting button  152 A (for the setting of the two-sheet bundles) and a setting button  152 B (for the setting of the 15-sheet bundles) in a setting area  152 , the designation of the number of recording sheets  18  becomes 3 sheets-14 sheets, or 16 sheets-20 sheets. In addition, the reason that the setting of 16 sheets-20 sheets can be made is because this is the upper limit of the processing capacity of the finisher  16 , and the present invention is not limited to this value range. 
     At the step  308 , in the case of the affirmative judgment that the number of sheets of one bundle of the recording sheets  18  has been input, the process shifts to step  310 , and in the case of the negative judgment that the number of sheets of one bundle of the recording sheets  18  has not been input, the process shifts to step  324 . 
     At the step  310 , it is judged whether or not a confirmation print button  166  to perform confirmation according to the number of sheets which is input at the step  308  has been pressed. In the case of the affirmative judgment that the confirmation print button  166  has been pressed, the process shifts to step  312 , and in the case of the negative judgment that the confirmation print button  166  has not been pressed, the process shifts to step  324 . 
     At the step  312 , the recording sheet  18  on which the confirmation print is carried out is selected, in  FIG. 13 , and the process shifts to step  314 . 
     At the step  314 , with the surface on which the marker for judging the upper surface of the recording sheets  18  is printed in the confirmation print as a standard, the folding position and the binding position of the output recording sheets  18  are measured, and the measured values are input, in the adjustment screen shown in  FIG. 16  in the case of the two-sheet bundles, in the adjustment screen shown in  FIG. 17  in the case of the 15-sheet bundles, and in the adjustment screen shown in  FIG. 18  in the case where the number of sheets of one bundle is designated. 
     In any of the cases of the adjustment screen shown to perform the adjustment of the two-sheet bundles ( FIG. 16 ), the adjustment screen shown to perform the adjustment of 15-sheet bundles ( FIG. 17 ), and the adjustment screen shown to perform the adjustment of the designated number of sheets of one bundle ( FIG. 18 ), in a measurement result input area  154 , a measurement result button  154 A corresponding to the folding position and the binding position of the output result is pressed. Next, in a measured value input area  156 , the value A that is the measured value of the folding position shown in the measurement result input area  154  is input by use of a pullup button  156 A and a pulldown button  156 B. In addition, the value B that is the measured value of the binding position is input by use of a pullup button  156 C and a pulldown button  156 D. After the value A value that is the measures value of the folding position, and the value B that is the measured value of the binding position are input, a close button  158  is pressed, and  FIG. 15  is shown again, and the process shifts to step  316 . 
     At the step  316 , in the cases of the two-sheet bundles and the 15-sheet bundles, an adjustment button  164  is pressed, and in the case where the number of sheets of one bundle is designated, an adjustment button  168  is pressed, and the process shifts to step  318 . 
     At the step  318 , from the measured values of the folding position and the binding position input at the step  314 , the setting unit  102  sets the respective adjustment amounts, and the process shifts to step  320 . 
     At the step  320 , the folding position and the binding position are adjusted from the adjustment amounts set by the adjustment unit  104 , and the process shifts to step  322 . 
     At the steps  322 , the memory control unit  106  stores the folding position and the binding position that the setting unit  102  sets, and the tray information of the tray in which the recording sheets  18  are contained into the nonvolatile memory, and the process shifts to step  324 . 
     Such a memory control unit  106  stores the adjustment amount of the folding process for different recording sheets, or the adjustment amount of the combined process, and thereby, it is possible to perform the postprocess on the basis of the stored adjustment amount after adjustment. 
     At the step  324 , it is judged whether or not the close button  169  shown in  FIG. 15  has been pressed. In the case of the negative judgment that the close button  169  has not been pressed, the process shifts to step  306 , and in the case of the affirmative judgment that the close button  169  has been pressed, this routine is finished. 
     In the pamphlet preparation process where a preset number of the recording sheets  18  are piled up and bound, and then folded into two, based on the measured value of the folding position and the measured value of the binding position obtained by the measurement of the recording sheets  18  processed in the pamphlet preparation process, the preset target value of the folding position and the preset target value of the binding position, and the set number of the recording sheets  18 , the adjustment amount of the folding position and the adjustment amount of the binding position are set, whereby it is possible to adjust the folding position and the binding position, and thus, it is possible to simplify the adjustment work of the combined process where a preset number of the recording sheets  18  are piled up and bound with staples, and then folded into two. 
     In addition, in the first exemplary embodiment, and the second exemplary embodiment, even in the case where the adjustment amount of the folding position, or the adjustment amount of the binding position is not registered, in the performance of the postprocess, if the number of the recording sheets  18  in the selected tray  22  is same as the number of the recording sheets  18  of previous registered adjustment amount, it is possible to perform the postprocess on the based on the registered adjustment amount. 
     Further, in the two-folding process, the maximum number of the sheets of the recording sheets  18  in one bundle to be folded into two, and in the pamphlet processing, the maximum number of the sheets of the recording sheets  18  in one bundle to be processed by the pamphlet preparation process, may be changed according to the quality of the recording sheets  18 . 
     Further, in the adjustment of the folding process and the pamphlet preparation process in the postprocess, in order to simply input the measured value of the recording sheets  18  input in the performance of the confirmation print, a scale may be displayed on the UI  100 , or a scale may be printed on the recording sheets  18  that are output. 
     Furthermore, in the pamphlet preparation process, the adjustment amounts for the two-sheet bundles and the 15-sheet bundles of the recording sheets  18  are set, the adjustment amounts of the numbers of sheets between them is interpolated on the basis of the set adjustment amounts, but the present invention is not limited to this, but interpolation may be carried out in consideration of the adjustment amount where the number of sheets in one bundle is selected. 
     Moreover, the user interface function may be registered as one of executional functions of an existing user interface in an image forming device. When it is carried out in the existing user interface in the image forming device, it is unnecessary to newly arrange a user interface to adjust the folding process and the compount process of the postprocess. 
     The foregoing description of the exemplary embodiments of the present invention has been provided for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations will be apparent to practitioners skilled in the art. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to understand the invention for various embodiments and with the various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the following claims and the equivalents.