Patent Publication Number: US-7215900-B2

Title: Image forming apparatus having device for changing print condition

Description:
BACKGROUND OF THE INVENTION 
   The present invention relates to an image forming apparatus for forming an image on a recording medium. 
   With an increasing degree of sophistication in the process of printing carried out in the image forming apparatus in recent years, print condition is coming to be set and managed for each page of the recording paper to be inputted (see Patent Document 1 referred to hereinbelow). In such an image forming apparatus, the print condition is set for each page and an image is formed according to the print condition for each page, whereby a great variety of high-quality outputs are achieved. 
   In the image forming apparatus, the conditions of finishing, e.g. stapling and punching, in addition to the image quality setting conditions are set for each page as print condition. Such finishing conditions are getting more and more highly functional and complicated, with an increasing degree of sophistication in the process of printing. Further, in addition to the process of finishing, the image forming conditions includes such high-functional processing as addition of page information, e.g. pagination and layout processing, e.g. recording of images of plural documents on a sheet of recording paper. 
   (Patent Document 1): Official Gazette of Japanese Patent Publication Tokkai 2002-99179. 
   However, an increasing degree of function and complexity in print condition is accompanied by setting errors. In the aforementioned background prior art, resetting requires much labor and time when a setting error has occurred. In other words, the operator has to repeat the setting in conformity to the predetermined procedure from the beginning for each page, and to perform confirmation and correction again. 
   Especially, when inputting complicated print condition covering a large amount of pages, much labor and time are needed and a setting error may occur. This will cause a high degree of operator effort and concentration. 
   Further, to avoid faulty image formation outputs caused by such setting errors, preprinting can be performed. In the process of the preprinting, the pages for each job are printed out and the print condition set by an operator is confirmed. 
   However, even if a preprint is carried out, when the print condition is required to be changed, similar to the problem as mentioned above, there remains the problem that resetting requires much labor and time. 
   Thus, it is important to develop an image forming apparatus capable of simple resetting of the print condition. 
   SUMMARY OF THE INVENTION 
   In view of the prior art described above, it is an object of the present invention to provide an image forming apparatus allowing simple resetting of the print condition. 
   The above object will be achieved by one of Structures (1) or (2). 
   Structure (1): An image forming apparatus for forming an image based on image information on a recording medium, comprising: (a) a storage section for storing a print condition for each of a plurality of pages of image information; (b) a print condition setting section for setting a print condition in response to the print condition stored in the storage section; (c) a preprint section for preprinting in accordance with the print condition which has been set; (d) an input section for inputting contents of a change in the print condition for a page to be changed, selected from the plurality of pages after the preprinting; and (e) a change section for changing a setting of the print condition for the selected page to be changed, based on the contents of the change. 
   Structure (2): An image forming apparatus for forming an image based on image information on a recording medium, including: 
   (a) a storage section for storing a print condition for each of a plurality of pages of image information; 
   (b) a print condition setting section for setting a print condition in accordance with the print condition stored in the storage section; 
   (c) a selection section for selecting plural pages having the same print condition as one group; 
   (d) an input section for inputting contents of a change in the print condition for the group selected by the selection sections; and 
   (e) a change section for changing a setting of the print condition for the selected page to be changed, based on the change. 
   The image forming apparatus of the Structure (1) is an image forming apparatus wherein, when image information constituted by a plurality of pages is to be formed on a recording medium, the print condition of the image information is stored for each page and an image is formed for each page based on the print condition, and the aforementioned print condition contains finishing information of the finisher. This image forming apparatus includes: a preprint means for preprinting of the aforementioned image; a display and change means for displaying the print condition of the page to be changed, which is selected out of the aforementioned plural pages, after termination of the aforementioned preprinting, and for changing the print condition; an operation section for setting such selection and change. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a block diagram represents the control section of a digital multifunctional machine; 
       FIG. 2  is a drawing represents the overall configuration of an image forming apparatus; 
       FIG. 3  is a drawing of the configuration of an image forming apparatus mainly showing the control section of a digital multifunctional machine; 
       FIG. 4  is a flowchart showing the operation of an image forming apparatus; 
       FIGS. 5(A) and 5(B)  are drawings of a display screen for showing the print condition for each page as an embodiment of the present invention; 
       FIGS. 6(A) and 6(B)  are drawings of an example of individual print condition of the input for each page as an embodiment of the present invention; 
       FIG. 7  is a flowchart representing the operation of preprint means as an embodiment of the present invention; 
       FIG. 8  is a flowchart representing the operation of change processing as an embodiment of the present invention; 
       FIGS. 9(A) and 9(B)  are drawings of a change screen for changing the print condition for each page as an embodiment of the present invention; 
       FIGS. 10(A) and 10(B)  are drawings of a change screen for changing the print condition for each group as an embodiment of the present invention; 
       FIGS. 11(A) and 11(B)  are drawings of exemplifying a change of individual print condition as an embodiment of the present invention (Part 1); 
       FIGS. 12(A) and 12(B)  are drawings of exemplifying a change of individual print condition as an embodiment of the present invention (Part 2); 
       FIGS. 13(A) and 13(B)  are drawings of exemplifying a change of individual print condition as an embodiment of the present invention (Part 3); and 
       FIGS. 14(A) and 14(B)  are drawings of exemplifying a change of individual print condition as an embodiment of the present invention (Part 4); and 
       FIG. 15  is a flowchart representing the operation as a variation of preprint processing. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
   Referring to the accompanying drawings, the following describes an image forming apparatus as the best mode of embodiment of the present invention, without the present invention being restricted thereto. 
   The overall configuration of the image forming apparatus of the present invention will be described first.  FIG. 2  is a drawing representing the overall configuration of the image forming apparatus. The image forming apparatus includes a digital multifunctional machine  100 , a punching unit  110  and a finishing apparatus  120 . The digital multifunctional machine  100  has a main unit and a sheet tray  101 , and the main unit includes a scanner section  102  as an example of the scanning means, a printer section  103  as part of the image forming means, a sheet tray  107 , conveyance paths  109  and  111 , a CPU  105  constituting a control section  161  and an image memory  106 . Further, the punching unit  110  for punching work includes a punching section  117  and a control unit  116  for controlling the punching section  117 . The finishing apparatus  120 , conveyance paths  121  through  124 , a gate  170 , a shift section  151 , stacking section  140 , a stapling section  141 , a main tray  142  constituting an exit tray, a sub-tray  144  and a control section  160 . The punching unit  110  and finishing apparatus  120  form a finishing section, and constitutes an image forming apparatus, together with the printer section  103 . 
   An operation section  108  is provided with a touch panel such as an LCD (liquid crystal display) for setting, displaying and changing the print condition, and a ten-keypad. The operation section  108  also includes the setting means for selecting and changing the print condition after preprint means to be described later. 
   The operation section  108  also includes a read start button for instructing the start of scanning of a document by a scanner section  102 , an image formation button for instructing the start of image formation and a preprint start button for instructing the start of preprinting. 
   The print condition of the present invention refers to the condition for outputting the image information including plural pages at the time of image formation. The condition includes finishing, information addition, layout, duplex and simplex copying and an exit tray selection. To put it more specifically, finishing includes stapling, punching and selection of exit tray. Information addition includes pagination for each page. Layout includes layout of one-page output, e.g. so called N-in-one processing for outputting N pages of document images in one page. That is, this implies a processing of multi-pages per one side of a sheet. 
   The scanner section  102  scans the image of the document mounted on the platen glass page by page. Based on the print condition, the printer section  103  inputs the recording paper as a recording medium supplied from the conveyance path  109  of the sheet tray  101  or sheet tray  107 , and transfers the image scanned by the scanner section  102  onto the recording paper, whereby an image is formed. Further, the recording paper where an image is formed by the printer section  103  is supplied to the punching unit  110  from the printer section  103  through the conveyance path  111 . 
   Based on the print condition, the punching unit  110  uses the punching section  117  to produce a punched hole on the recording paper from the digital multifunctional machine  100 . Then the finishing apparatus  120  captures the recording paper ejected from the punching unit  110  and puts it onto the conveyance path  121 . Then it ejects the paper to the main tray  142  through the gate  170  or to the sub-tray  144 . Alternatively, the paper is subjected to shift processing by the shift section  151  in the finishing process when ejecting it to the main tray, or is subjected to stapling process by the stapling section  141 . Depending on the processes selected from among these alternatives, one of conveyance paths  122  through  124  is selected. 
   When stapling is performed in the finishing process, the stacking section  140  of the finishing apparatus  120  stacks a plurality of sheets of recording paper. Similarly, the stacking section  140  of the finishing apparatus  120  drives staples into the sheets of recording paper stacked on the stacking section  140  in response to the instruction from the control section  160 , and binds the sheets. 
   The recording paper conveyed onto the stacking section  140  from the input section  124  slides down to the side-stitching stopper by its own weight and stops there. This allows a plurality of sheets of paper in the stacking section  140  to be aligned in the direction of conveyance, and alignment in the direction of conveyance is ensured. Further, alignment across the width of recording paper orthogonal to that direction is provided when the recording paper is tapped by a tapping mechanism (not illustrated) orthogonal to the paper surface in response to the instruction from the control section  160 . A plurality of sheets of recording paper having been subjected to stapling process has its trailing edge held by the ejection claw of the ejection belt inside the stacking section  140 , and is pushed upward. Then the paper is ejected into the main tray  142 . 
   In the shift section  151 , the recording paper of straight ejection put into the conveyance path  123  from the conveyance path  121  through the gate  170  is displaced in the direction at right angles with the feed direction of recording paper and is ejected into the main tray  142 . Then the sheets of recording paper with different contents copied thereon can be classified on the main tray  142 . 
   The sub-tray  144  serves as a receiving tray after the recording paper has been ejected onto the conveyance path  122 . The sub-tray  144  is located on the upper row of the finishing apparatus  120 . The ejected recording paper can be easily taken out from the top of the finishing apparatus  120 . 
     FIG. 3  is a functional block diagram representing the flow of the image information centering on the control section  161  of the digital multifunctional machine  100  and print condition. When image information is scanned from the scanner section  102 , the image information of the document is scanned by the CCD (charge coupled device). After having been read by the read-processing section  221  of the control section  161 , the image is compressed by the compression IC  222  and is stored in an image memory  106 . The print condition of the image information can be inputted from the operation section  108  in any one of the units of job, plural page or a single page, and is similarly stored in the image memory  106 . 
   When image information is read from a terminal  130  via the LAN (Local Area Network), the image information is read into the image memory  113  of the image processing section  112 , and is then read into the image memory  106  of the control section  161  through the bus  204 . After that, the image information of the image memory  106  is sent to the compression IC  222  through the DRAM control IC  225 . Having been compressed there, the image information is again stored in the image memory  106 . 
   The image memories  106  and  113  are constituted by a DRAM (Dynamic Random Access Memory) and are controlled by the DRAM control ICs  225  and  226  for representing the storage information. 
   The compressed data of the image information stored in the image-memory  106  is sent to the expansion IC  224  through the DRAM control IC  225  and is expanded. Then it is sent, for example, to the LD (Laser Diode) of the printer section  103  from the pickup-processing section  223  and image formation is carried out. The print condition of the image memory  106  is send to the printer control section  118  of the printer section  103  through the CPU  105 . Based on this print condition, the printer control section  118  controls the printer, succeeding punching unit  110  and finishing apparatus  120 . 
   When a copy image is formed from a document having a plurality of pages in the image forming apparatus, the document having a plurality of pages is divided into a plurality of groups, and print condition is set by the setting means for each group. When the read start button has been pressed, the document image is scanned from each group by the scanner section  102  as a reading means and the document image is stored in the image memory  106 . When the image formation start button has been pressed, formation of copy images for each group according to the print condition set for each group is started by the printer section  103  as an image forming means, and this processing is applied to all the groups. 
     FIG. 1  is a block diagram representation the functions of writing the image information and print condition into the image memory  106  and reading it therefrom. The control section  161  includes a reading means  200 , an image memory  106 , a pickup means  203 , a preprinting means  204  and a display and change means  205 . The hardware constituting the reading means  200 , pickup means  203 , preprinting means  204  and display and change means  205  includes a CPU  105 , non-volatile memory  220 , DRAM control IC  225 , read-processing section  221 , compression IC  222 , expansion IC  224  and pickup-processing section  223 . 
   When the operation section  108  reads a group of image information, namely, documents 1 through 5 in  FIG. 1 , the print condition is set by the operator. This print condition is set for each job, for a plurality of pages constituting a group, or for each page. The control section  161  allows the reading means  200  to read the print condition and the image information of the documents 1 through 5 into the image memory  106 . The image information of the documents 1 through 5 is compressed by the compression IC  222 . From the print condition for each inputted job, for a plurality of pages or for each page, the page writing means  201  generates each print condition for each page of the compressed image information. Each print condition is associated with the compressed data of the corresponding page by linking, and each print condition and compressed data are stored in the image memory  106 . The page writing means  201  repeats this procedure until a group of the image information is stored into the image memory  106 . In  FIG. 1 , the print condition and image information are read from the operation section  108  and scanner section  102 , as described above. However, when the print condition and image information are inputted from the terminal  130 , it is read through the LAN (Local Area Network) from the terminal  130  shown in  FIG. 3 . Then the image information and print condition are read into the image memory  113  and are then read into the image memory  106  of the control section  161  through the bus  240 . The print condition read into the image processing section  112  can be inputted for each job, for a plurality of pages or for each page. 
   Each print condition and compressed data stored in the image memory  106  are picked up by the pickup means  203 . In the page reading means  202  of the pickup means  203 , the compressed data and each print condition associated therewith are as a pair picked up sequentially. The compressed data is expanded by the expansion IC  224  and is sent to the printer section  103  as image information, together with the corresponding each print condition. 
   Based on the page-designation from the operation section  108 , the display and change means  205  allows the pickup means  203  to pick up the designated individual print condition in the image memory  106  so that it is displayed on the operation section  108 . The display and change means  205  allows the reading means  200  to write on the relevant of the image memory  106  the print condition change information with the page-designated by the operation section  108 . Here the display and change means  205  has a page change means, group change means and job change means, wherein in the case of pickup, pickup is performed for each page or group, in response to the instruction from the switching means  810 , which will be described later, of the operation section  108 ; and in the case of writing, writing is performed for each of the designated page, group and job, in response to the instruction given by a page application means  830 , which will be described later, group application means  840  and job application means  850  of the operation section  108 . 
   The preprint means  204  performs preprinting in response to the instruction of the button from the operation section  108 . In the preprinting process, the compressed data of each print condition and image information in units of job stored in the image memory  106  is read by the page reading means  202 . After the image information has been expanded, it is sent to the printer section  103  and is printed on a printer. Upon termination of the outputting on the printer, the preprint means  204  sends the termination signal to the operation section  108  by a means not illustrated in the drawing. Further, without being restricted to the job unit, preprinting can also be performed for a specific group or page alone. 
   Referring to  FIG. 4 , the operation of the digital multifunctional machine  100  of the present invention will be described. The operator selects the print condition input method, namely for each job, for a plurality of pages or for each page, from the operation section  108  equipped with a setting means. After that, the operator sets the print condition of the document (Step S 301 ). In addition to the printer information such as document size, number of sheets to be printed and density, print condition such as finishing information including punching and stapling information is also set in this setting operation from the touch panel of the operation section  108  or ten-keypad. It should be noted that this setting operation also includes the setting of the process of finishing for each group and page. Thus, the print condition is complicated and wide-ranging. 
     FIGS. 5(A) and 5(B)  show an example of the display screen of the operation section  108  for this setting. The display screen and ten-keypad  410  of  FIGS. 5(A) and 5(B)  provide setting means for checking and changing the print condition for each page. This display screen contains a bird&#39;s-eye view display  400  for providing a bird&#39;s-eye view of a plurality of documents for each inputted print condition, an individual display section  401  for displaying the print condition for each page of the document, and shift key  411 . On the bird&#39;s-eye view display  400 , image displays (layout plan) for symbolizing one document in one row for the number of all documents for which the setting is made, wherein they are arranged one on top of another in a displaced form. Here one document is represented by one rectangular form. Further, the print condition for each page of the document corresponding to the selected layout plan of the bird&#39;s-eye view display  400  are arranged on the individual display section  401 . The layout plan as a symbol of one document is selected according to the page designation by the ten-keypad  410  or by the shift operation using the shift key  411  on the right top of the display screen. It should be added that the layout plan as a symbol of one document on the bird&#39;s-eye view display  400  is represented differently for each of the layout plans corresponding to the document containing different print conditions. For example, they are represented by different colors or crosshatches. 
   After the image information has been read from the scanner section  102 , the display screen as a means for the aforementioned setting can be used to check and change the print condition. In this case, the image with the output document configured in a reduced form is given in a thumbnail display on the left of the individual display section  401 , so that the operator can easily check the output document. 
     FIG. 5(A)  shows an example of the individual display of the second page when scanning and printing 12 documents. In this example, the process of stapling is performed on pages 3 through 7, and the corresponding layout plan is shown crosshatched.  FIG. 5(B)  shows the same example as  FIG. 5(A) , and shows an example of the individual display of the third page when scanning and printing 12 documents. In this example, the process of stapling is carried out on pages 3 through 7, so a drawing schematically showing the process of stapling is added to the image for thumbnail display  404 . 
   Going back to  FIG. 4 , the operator checks the print condition that has been inputted (Step S 303 ). This checking is required to ensure correct outputting especially when the print condition is complicated and wide-ranging. Using the setting means shown in  FIGS. 5(A) and 5(B) , the operator determines if the print condition is correct or not (Step S 303 ). If the print condition is not correct (No in Step S 303 ), the system goes to Step S 301  and the operator sets the print condition again. 
   Further, when the print condition is correct (Yes in Step S 303 ), the operator places documents on the scanner section  102  so that the image information is read and written into the image memory  106  (Step S 304 ). In this step of writing, the print condition inputted for each job, for a plurality of pages or for each page, as each print condition for each piece of image information, is linked with the compressed data of the image information, using the page writing means  201  shown in  FIG. 1 . Then it is stored in the image memory  106 . 
   After that, the control section  161  checks whether or not reading has been completed the specified number of times (Step S 306 ). If not (No in Step S 306 ), the system goes to Step S 301  and the print condition of the Step S 301  is set. 
   When reading has been completed the specified number of times (Yes in Step S 306 ), the control section  161 , a check is made according to the information inputted from the operation section  108  (Step S 307 ) to see if preprinting is required or not. In this case, when preprinting is required (Yes in Step S 307 ), preprinting is performed (Step S 308 ). If preprinting is not required (No in Step S 307 ), a series of image information is read by reading the compressed data of the image memory  106  and each print condition (Step S 309 ). 
   Incidentally, preprint designation is provided by pressing the preprint button  870  shown in  FIGS. 9(A) and 9(B) . 
   Process of preprinting in Step S 308  will be described later. 
   When reading the image information in Step S 309 , the compressed data and each print condition linked with this compressed data are read sequentially, using the page reading means  202  shown in  FIG. 1 . The compressed data is expanded, and as image information, is then sent to the printer section  103 , together with each print condition. 
   Based on each print condition, the printer control section  118  of the printer section  103  performs the process of printing the image information (Step S 310 ) for each page. Since each print condition also includes finishing information, the punching unit  110  and the finishing apparatus  120  perform the process of finishing, based on the finishing information contained in the print condition from the printer control section  118  (Step S 311 ), and eject the recording paper to the exit tray (Step S 312 ). All steps in this processing terminate. 
   The following describes an example of each print condition sent from the image memory  106  to the printer section  103 , an example of the finishing process carried out by the punching unit  110  and finishing apparatus  120  in Step S 311 , based on each of the print conditions, and an example of ejecting paper to the main tray  142  or sub-tray  144 . 
     FIG. 6(A)  shows an example of each print condition when the print condition is inputted for each page. The columns with an up-arrow mark have the same print condition as the upper columns. Each print condition corresponds to the example shown in the block diagram of  FIG. 1 . It is related to each print condition linked to the documents on pages 1 through 5. The vertical axis of the table indicates the page number and the horizontal axis indicates the print condition for each item. In this case, the finishing item, exit tray selection, number of volumes and partition information are given for each page as each print condition. The partition information is used, for example, as the partition information in the case of processing for each booklet.  FIG. 6(B)  shows an example of the recording paper outputted when paper has been ejected based on each print condition of  FIG. 6(A) . In  FIG. 6(B) , the recording paper of the number of volumes shown on each page is outputted to the designated main tray  142  or sub-tray  144 , and punching operation is performed by the punching unit  110  on the designated page. 
   Referring to  FIG. 7 , the following describes the process of preprinting:  FIG. 7  is a flowchart showing the operation of preprinting. The control section  161  allows the image information of one job to be picked up by the pickup means  203  (Step S 601 ). 
   The control section  161  sends the image information for one job and each print condition to the printer section  103 , where printing is performed (Step S 602 ). After finishing such as punching and stapling has been conducted, paper is ejected to the exit tray (Step S 603 ). The control section  161  checks whether or not printing and ejection have been completed for one job (Step S 604 ). If not (No in Step S 604 ), the system goes to Step S 602  and printing is repeated. If printing and ejection for one job have been completed (Yes in Step S 604 ), the control section  161  changes the print condition (Step S 605 ). In this process of changing, the print output for one job is checked by the operator. If there is any problem, the print condition is changed. The process of changing will be described later. 
   Depending on the degree of change, the operator determines whether or not preprinting is repeated (Step S 606 ). If printing is to be repeated (Yes in Step S 606 ), the system proceeds to Step S 601  to repeat preprinting. If preprinting is not required (No in Step S 606 ), the system terminates the process of preprinting and goes to the Step S 309  in  FIG. 4 , where normal printing of outputs is carried out. 
   Referring to  FIG. 8 , the process of changing in Step S 605  will be described.  FIG. 8  is a flowchart showing the operation in the process of change. Based on the preprinted output, a check is made to see whether the printed output is correct or not. After termination of preprinting, the control section  161  automatically proceeds to the preprinting change screen (Step S 701 ). 
   The following describes the change screen of the operation section  108  with reference to  FIGS. 9(A) and 9(B) , and  FIGS. 10(A) and 10(B) .  FIGS. 9(A) and 9(B) , and  FIGS. 10(A) and 10(B)  show an example of the change screen for preprinting. This change screen is similar to the display screen for initial setting shown in  FIGS. 5(A) and 5(B) . To avoid duplication, the following description mainly refers to the differences, and the same portions will not be described. The change screen includes a switching means  810  for selecting the display format, a bird&#39;s-eye view display  400 , a shift key  411  as a shift means, and an individual display section  860 . The individual display section  860  contains a thumbnail display section  404 , a print condition display section  820 , a page application means  830 , a group application means  840  and a job application means  850 . The individual display section  860  corresponds to the individual display section  401  shown in  FIGS. 5(A) and 5(B) . 
   The switching means  810  is a selector switch for selecting whether the page-based print condition is displayed for each page on the print condition display section  820 , or the group-based print condition is displayed for each group.  FIGS. 9(A) and 9(B)  show examples where the page display is selected by the switching means  810 .  FIGS. 10(A) and 10(B)  show examples where group display is selected by the switching means  810 . The print condition display section  820  of individual display section  860  indicates the print condition of one or more pages displayed on the left top of the individual display section  860 . This display section is identically the same as the page-based print condition  403  and  405  shown in  FIGS. 5(A) and 5(B) . It is designed as a touch key. If the print condition item displayed is touched, the input screen of the selected item appears to permit setting. 
   The page application means  830  is a touch button. If this button is touched, the page-designated screen (not illustrated) appears so that the page can be designated. The page application means  830  sends this page information and the setting information of the item displayed on the print condition display section  820 , to the page change means of the display and change means  205 . Using the page writing means  201 , the page application means  830  stores such information into the image memory  106  in a form associated with the image information for each page. 
   The group application means  840  is a touch button. The group of the print condition displayed on the change screen can be designated by touching this button. The group application means  840  sends this group designation information and setting information of the item displayed on the print condition display section  820 , to the group change means of the display and change means  205 . Using the page writing means  201 , the group application means  840  stores such information into the image memory  106  in a form associated with the image information for each page. As shown in  FIGS. 10(A) and 10(B) , when the group display is selected by the switching means  810 , the group application means  840  is maintained in a masked state where input operation is disabled. 
   The job application means  850  is a touch button. The job of the print condition displayed on the change screen can be designated by touching this button. The job application means  850  sends this job designation information and setting information of the item displayed on the print condition display section  820 , to the job change means of the display and change means  205 . Using the page writing means  201 , the job application means  850  stores such information into the image memory  106  in a form associated with the image information for each page. 
   In this case,  FIGS. 9(A) and 9(B)  show examples where the page display is selected by the switching means  810 .  FIG. 9(A)  refers to the case where “STAPLE NON” is set on the second page, while  FIG. 9(B)  refers to the case where “STAPLE YES” is set on the third page.  FIGS. 10(A) and 10(B)  show the case where the group display is selected by the switching means  810 .  FIG. 10(A)  refers to the case where “STAPLE NON” is set on the first and second pages, and  FIG. 10(B)  the case where “STAPLE YES” is set on the third through seventh pages. 
   The bird&#39;s-eye view display  400 , shift key  411 , thumbnail display section  404  and ten-keypad  410  have identically the same functions as those given in  FIGS. 5(A) and 5(B) . Here the bird&#39;s-eye view display  400  and shift key  411  allow page-based display and shift to be performed if the page display is selected by the switching means  810 , and allow group-based display and shift to be performed if the group display is selected by the switching means  810 . 
   Returning to  FIG. 8 , the operator selects the display format using the switching means  810  (Step S 702 ). In this case, based on the error conditions of the printed output, the operator selects it by determining if the page to be changed is based on the page unit or group unit. The control section  161  allows the page display to be selected by the switching means  810  and determines whether or not the page-based display should be made (Step S 703 ). If the page-based display is to be made (Yes in Step S 703 ), the control section  161  provides a page display shown in  FIGS. 9(A) and 9(B)  (Step S 704 ). 
   After that, according to the change screen shown in  FIGS. 9(A) and 9(B) , the operator selects the page and item to be changed; the operator selects the page by operating the shift key  411 , and the item by touching the print condition display section  820  (Step S 705 ). The operator then changes the settings using the setting change screen for each of the items (not illustrated) (Step S 706 ). 
   When the page-based display is not required (No in Step S 703 ), the control section  161  provides the group display as shown in  FIGS. 10(A) and 10(B)  (Step S 707 ). According to the change screen of  FIGS. 10(A) and 10(B) , the operator selects the group and item to be changed; the operator selects the group by operating the shift key  411 , and the item by touching the print condition display section  820  (Step S 708 ). The operator then changes the settings using the setting change screen for each of the items (not illustrated) (Step S 709 ). 
   After that, when storing the changed setting into the image memory  106  using the page writing means  201 , the operator determines whether the designated unit of page is used or not (Step S 710 ). In this case, if the unit of page is used (Yes in Step S 710 ), the control section  161  designates the page on the page setting screen (not illustrated) and writes new print condition using the designated page writing means  201  (Step S 711 ). If the unit of page is not used (No in Step S 710 ), the operator goes to the next step without the Step S 711  being performed. 
   When storing the changed setting into the image memory  106  using the page writing means  201 , the operator determines whether the unit of group is used or not (Step S 712 ). In this case, if the unit of group is used (Yes in Step S 712 ), the control section  161  writes a new print condition into each of the pages of the group where this page belongs, using the designated page writing means  201  (Step S 713 ). If the unit of group is not used (No in Step S 712 ), the operator goes to the next step without the Step S 713  being performed. 
   When storing the changed setting into the image memory  106  using the page writing means  201 , the operator determines whether the unit of job is used or not (Step S 714 ). In this case, if the unit of job is used (Yes in Step S 714 ), the control section  161  writes a new print condition into each of the pages of the job where this page belongs, using the designated page writing means  201  (Step S 715 ). If the unit of job is not used (No in Step S 714 ), the operator terminates this processing without the Step S 715  being performed. 
     FIGS. 11(A) through 14(B)  show specific examples of change in the process of changing given in  FIG. 8 . The drawings of  FIGS. 11(A) through 14(B)  are the same as those shown in  FIG. 6(A) . Each print condition, designated in terms of the page number on the vertical axis and the item-based print condition on the horizontal axis, is shown in the worksheet. The columns with an up-arrow marks have the same print condition as the upper columns. 
     FIG. 11(A)  shows an example of initial setting. This setting example includes the finishing-related items such as stapling, partition and punching, in addition to the setting items such as the number of volumes, paper size, sheet tray and exit tray. In this example, the process of stapling performed on the third through seventh pages, and partition information is added to indicate the end of stapling on the seventh page. Here the first and second pages where stapling is not performed, the third through seventh pages where stapling is performed, and the eighth through twelfth pages where stapling is not performed constitute groups 1 through 3, respectively. The first through twelfth pages constitute one job. 
     FIG. 11(B)  shows an example of adding the process of punching on the second page, using the process of page-based changing after preprinting, with respect to the initial setting shown in  FIG. 11(A) . In this example, the page display of the switching means  810  is selected on the change screen shown in  FIG. 9(A) , and the second page is selected by the shift key  411 . Punching is selected from the items of print condition display section  820 . The setting information of this punching is present (Yes) and the second page is designated by the page application means  830 . 
     FIG. 12(A)  shows an example of adding the process of punching on the first through third pages, using the process of page-based changing after preprinting, with respect to the initial setting shown in  FIG. 11(A) . In this example, the page display of the switching means  810  is selected on the change screen shown in  FIG. 9(A) , and the second page is selected by the shift key  411 . Punching is selected from the items of print condition display section  820 . The setting information of this punching is present (Yes) and first through third pages is designated by the page application means  830 . 
     FIG. 12(B)  shows an example of adding the process of punching on the first and second pages (group 1), using the process of page-based changing after preprinting, with respect to the initial setting shown in  FIG. 11(A) . In this example, the page display of the switching means  810  is selected on the change screen shown in  FIG. 9(A) , and the second page is selected by the shift key  411 . Punching is selected from the items of print condition display section  820 . The setting information of this punching is present (Yes) and first and second pages are designated by the group application means  840 . 
     FIG. 13(A)  shows an example of adding the process of punching to the entire job, using the process of page-based changing after preprinting, with respect to the initial setting shown in  FIG. 11(A) . In this example, the page display of the switching means  810  is selected on the change screen shown in  FIG. 9(A) , and the second page is selected by the shift key  411 . Punching is selected from the items of print condition display section  820 . Punching is designated to the entire job by the job application means  850 . In this case, the partition information showing the process of stapling performed on the third through seventh pages and the end of stapling on the seventh page reflects the entire setting information on the second page. 
     FIG. 13(B)  shows an example of adding the process of punching for each group, using the process of group-based changing after preprinting, with respect to the initial setting shown in  FIG. 11(A) . In this example, the group display of the switching means  810  is selected on the change screen shown in  FIG. 10(A) , and the first and second pages are selected by the shift key  411 . Punching is selected from the items of print condition display section  820 . The setting information of this punching is present (Yes), and punching is designated to the entire group 1 by the group application means  840 . 
     FIG. 14(A)  shows an example of adding the process of punching for each group or for each designated page, using the process of group-based changing after preprinting, with respect to the initial setting shown in  FIG. 11(A) . In this example, the group display of the switching means  810  is selected on the change screen shown in  FIG. 10(A) , and the first and second pages are selected by the shift key  411 . Punching is selected from the items of print condition display section  820 . The setting information of this punching is present (Yes), and punching is designated to the entire group 1 on the first and second page by the group application means  840 . Further, eleventh and twelfth pages are designated by the page application means  830 . 
     FIG. 14(B)  shows an example of adding the process of punching for each group or for each job, using the process of group-based changing after preprinting, with respect to the initial setting shown in  FIG. 11(A) . In this example, the group display of the switching means  810  is selected on the change screen shown in  FIG. 10(A) , and the first and second pages are selected by the shift key  411 . Punching is selected from the items of print condition display section  820 . The setting information of this punching is present (Yes), and punching is designated to the job by the job application means  850 . In this case, the entire setting information on the first and second pages is reflected to the entire job, therefore, stapling is not performed. 
   Referring to  FIG. 15 , the following describes a variation of preprinting in the Step  308  of  FIG. 4 . 
   The control section  161  judges whether the page for preprinting has been designated or not (Step S 801 ). If no page for preprinting has been designated according to the decision of the Step S 801 , the control section  161  judges whether the group for preprinting has been designated or not (Step S 810 ). If no group has been designated according to the decision of the Step S 810 , the control section  161  sends the image information and each print condition for one job, to the printer section  103  (Step S 812 ), where the process of printing is carries out (Step S 803 ). If the group for preprinting has been designated according to the decision of the Step S 810 , the control section  161  sends the image information of the designated group and the print condition of the designated group to the printer section  103  (Step S 811 ), where the process of printing is carries out (Step S 803 ). Further, if the page for preprinting has been designated according to the decision of the Step S 802 , the control section  161  sends the image information of the designated page and the print condition of the designated page to the printer section  103  (Step S 802 ), where the process of printing is carries out (Step S 803 ). 
   To designate the page for preprinting, press the preprint button  870  of  FIGS. 9(A) and 9(B) , then the applied page designation button  830 . This procedure starts preprinting of the designated page having been selected. To designate the group for preprinting, press the preprint button  870  of  FIGS. 9(A) and 9(B) , then the applied group designation button  840 . This procedure starts preprinting of the designated group having been selected. To start preprinting for the overall job, press the preprint button  870 , then the applied job designation button  850 . 
   After that, finishing is performed in conformity to the print condition (Step S 804 ) and paper is ejected (Step S 805 ). 
   A check is made to see whether the designated printing having been determined in Steps S 801  and S 810  has been completed or not (Step S 806 ). If it has not been completed, the print condition is changed (Step S 807 ). The procedure for changing this condition is the same as that in  FIG. 8 , and will not be described to avoid duplication. 
   A check is made again to see whether the preprint button  870  has been pressed or not (Step S 809 ). If it has been pressed, the system goes back to the Step S 801 . Again, if the preprint button  870  is not pressed, the process of preprinting is terminated. The system goes to the Step S 309  of  FIG. 4 , where the printed output is produced in the normal print mode. 
   As described above, in the present embodiment, when the print condition is changed after preprinting, the page to be changed is selected and display for each page or for each group. After the displayed print condition has been changed, the page-based each print condition is created using the display and change means  205  for each designated page, group or job, and is stored in the image memory  106 . This arrangement effectively changes the setting of for only the page containing a setting error checked in preprinting. When each print condition is stored in the image memory  106 , this arrangement ensures the optimum range of application for each page, group or job, thereby reducing the labor and time in setting and minimizing the setting error. 
   In the present embodiment, the finishing section constituted by the finishing apparatus  120  and punching unit  110  is used. It is also possible to use such a finishing section as a sorter for sorting the recording paper. 
   In the present embodiment, preprinting for image formation is carried out by the preprinting and the print condition of the page to be changed, selected out of plural pages is displayed and changed by the display and change means, upon completion of the preprinting. Then the selection and change are set by the operation section. This arrangement enables simple resetting to be done, without requiring labor and time, and reduces resetting errors. 
   Also, according to the present embodiment, as plural pages having the same print conditions are selected as one group, contents of the changes in the print conditions for the group is inputted, and the print conditions for the aforementioned selected page are changed, based on the contents of the aforementioned changes. 
   This arrangement ensures simple resetting without requiring much labor and time for changing, and minimizes resetting errors. 
   Also, the operation section uses the switching section to switch whether the aforementioned selection is carried out for each page or for each group having the same print condition. This arrangement provides a unit ensuring easy change in response to a particular setting error. 
   Also, the operation section uses a shift section to shift the aforementioned selection for each page or group mentioned above. This arrangement provides an easy selection of desired page or group. 
   In the present embodiment, the display and change means uses the page change section to change the designated page and to store the result. Thus, the print condition can be changed for each page. 
   According to the present embodiment, the operation section uses the page application section to designate one or plural pages. This allows the page change section to be operated. 
   Also, the display and change means uses the group change section to change the group and store the result. Thus, the print condition to be stored can be changed for each group. 
   In the present embodiment, the operation section uses the group change section to designate the group. This allows the group change section to be operated. 
   Also, the display and change means uses the job change section to change the job and to store the result. Thus, the print condition to be stored can be changed for each job. 
   According to the present embodiment, the operation section uses the job application section to designate the job. This allows the job change section to be operated. 
   Also, the preprint means preprints one job. This permits all page setting to be confirmed.