JP2003087560A - Image forming apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform appropriate image formation and post-processing without wasting paper, etc., due to an operation error and for confirmation even in the case of performing complicated setting. SOLUTION: An image forming apparatus having a post-processing means for performing post-processing of paper subjected to image formation and a post-processing selecting means for selecting the type of the post-processing, is provided with an image data reducing means for converting the image data stored in image data into image data of a reduced size, and a finished image display means for displaying a finished image 606 showing a state where post- processing selected by the post-processing selecting means is applied to paper on which an image is formed on the basis of an unreduced image data by working the image data of the reduced size.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a printer or a digital copying machine, which can perform post-processing such as stapling and punching on an image-formed sheet.

[0002]

2. Description of the Related Art In recent years, various image forming apparatuses such as digital copying machines have various functions such as an image combining function for forming images for a plurality of pages on one sheet and a double-sided function for forming images on both sides of the sheet. Some have an image editing function and a function of performing post-processing such as stapling processing and punching processing on a sheet after image formation. In such an image forming apparatus, these settings are made on the operation panel before the image formation is started. However, when there are many combinations of settings, the image actually output is difficult to imagine, and therefore the user desires. There was a case to set different from. In such cases,
Since the image formation is to be performed again, waste of paper, toner, and the like occurs.

As an apparatus for solving such a problem, Japanese Patent Application Laid-Open No. 11-187256 discloses an image forming apparatus which can select to output a test image prior to normal image output. According to this apparatus, it is possible to confirm an image to be output in advance by outputting a trial image, prevent mistakes, and prevent waste of paper and toner.
However, since the confirmation is performed by the trial image formed on the paper, there is a problem that the paper and the like for forming the trial image are still wasted.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and makes it possible to easily perform a complicated setting in an image forming apparatus without wasting paper or the like for operation mistakes or confirmation. The purpose is to enable appropriate image formation and post-processing.

[0005]

In order to achieve the above object, an image forming apparatus of the present invention has an image data inputting means for inputting image data of an image to be formed and an image data storing means for storing the image data. Means, an image forming means for forming an image on a sheet based on the image data stored in the image data storing means, a post-processing means for performing a post-processing on the paper after the image formation, and a kind of the post-processing. In the image forming apparatus having a post-processing selecting unit for selecting, image data reducing unit for converting the image data stored in the image data storing unit into image data of reduced size, and an image based on the image data before reduction. A finished image showing a state when the post-processing selected by the post-processing selecting means is applied to the sheet to be formed is displayed by processing the image data of the reduced size. Characterized by providing an up image display means.

In such an image forming apparatus, it is preferable to provide finishing page designating means for designating a page of the finishing image to be displayed by the finishing image displaying means. Further, the finish image display means stores in advance image data of an image obtained by subjecting a blank sheet to a post-processing that can be selected by the post-processing selecting means, or image data of a change caused by the processing, The finished image is obtained by synthesizing the image data obtained by performing the post-processing on the blank sheet according to the type of the post-processing selected by the post-processing selecting means or the image data of the change and the image data of the reduced size. Is a means for displaying.
Further, the post-processing that can be selected by the post-processing selecting means is stapling processing and punching processing, and the finish image display means performs the stapling processing on a blank sheet according to the type of post-processing selected by the post-processing selecting means. It is advisable to combine the data of the image subjected to the above-mentioned processing, the image data of the hole generated by the punching process, and the image data of the reduced size to display the finished image.

In these image forming apparatuses, after the stapling process is included in the post-processing that can be selected by the post-processing selecting means, when the finish image display means selects the stapling processing by the post-processing selecting means, 1
For pages other than the page and the last page, it is preferable to have a means for displaying the finished image as an image in a spread state according to the position to be stapled.
Further, when the finish image display means displays a new finish image by the post-treatment selecting means after the finish image is displayed, a means for displaying the finish image again based on the selection is provided. You should have it.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. First, a digital copying machine which is an embodiment of an image forming apparatus of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a diagram showing the configuration of the digital copying machine in a simple manner, and FIG. 2 is a block diagram showing the configuration of the digital copying machine focusing on a control system. As shown in FIG. 1, this digital copying machine includes a scanner section 101, a laser recording section 102, and a post-processing section 103. Based on the image data of the original read by the scanner section 101, the laser recording section 102 forms a sheet. It is an apparatus that forms an image on a sheet and performs post-processing such as stapling and punching on the paper on which the image is formed by the post-processing unit 103.

The scanner unit 101 is an image data input means, and includes a transparent contact glass 104 and a document table 105.
Contact glass 10 for each original set in a
4 automatic double-sided document feeder (R
ADF) 105 and a scanner unit 1 for reading an image of a document placed on the upper surface of the contact glass 104.
And 06. Here, RADF10
Reference numeral 5 indicates a single-sided document feeding path from the document table 105a through the contact glass 104 to a discharge tray (not shown), and the front and back of the document on which one side of the image has been read by the scanner unit 106 is reversed and again placed on the contact glass 104. It has a double-sided original feeding path for feeding to both single-sided and double-sided originals. Further, the scanner unit 106 irradiates a document with a lamp, forms reflected light from the document on a light receiving surface of a photoelectric conversion element (CCD) with a lens, a mirror, or the like, and reads an image of the document. The photoelectric conversion element converts the received reflected light into an electric signal and outputs it to an image processing unit described later.

The laser recording section 102 is an image forming means, and is a sheet conveying section 107 and a laser writing unit 108.
And an electrophotographic process unit 109. The paper transport unit 107 is a unit that transports the paper to the electrophotographic process unit 109. The paper that has passed through the fixing roller that fixes the image in the double-sided copy mode in which an image is formed on both sides of the paper is turned upside down and the electrophotographic is performed again. A sub-conveyance path leading to the process unit 109 is provided. Laser writing unit 108
Drives a semiconductor laser based on image data supplied from an image processing unit described later to emit a laser beam, and deflects the laser beam through a mirror or a lens so that the surface of the photoconductor drum of the electrophotographic process unit 109 is deflected. Scan to form an electrostatic latent image. The electrophotographic process unit 109 visualizes the electrostatic latent image with toner, and the electrostatic latent image is visualized by the paper transport unit 10.
The toner is melted and fixed on the surface of the paper by being transferred onto the paper conveyed by 7 and being heated and pressed by the fixing roller to form an image on the paper. The post-processing unit 103 is a post-processing unit, and performs paper alignment, stapling, punching, etc. on the paper discharged from the electrophotographic process unit 109 after image formation is completed according to the setting of the apparatus. And discharges it to the paper discharge tray 103a or 103b.

In this digital copying machine, the CPU 211 of the image processing board 210 shown in FIG. 2 centrally controls the devices constituting each unit via the CPU mounted on the board arranged for each unit. . These boards are the control unit of this digital copying machine, and in addition to the image processing board 210, a CCD board 220, a machine control board 230, an operation panel board 25.
It is equipped with 0. The image processing board 210 is a board on which a CPU for performing various image processes on image data is mounted together with peripheral components.
A hard disk drive (HDD) control unit 213, a memory 214, and a laser control unit 215 are provided. The operation of each of these units will be described later.

The CCD board 220 is a board on which a photoelectric conversion element is mounted together with peripheral components, and the A / D conversion circuit 2 is provided.
21, CCD control circuit 222, analog circuit 223, C
It is equipped with a CD 224. Then, the CCD control circuit 22
When the CCD 224 controlled by 2 receives the reflected light from the original, the information is converted into an electric signal, the gain is adjusted by the analog circuit 223, and further converted into 8-bit digital image data by the A / D conversion circuit 221. And sends it to the image processing section 212 of the image processing board 210.

The machine control board 230 is a board for managing each device in the apparatus, and is provided with a CPU 232 and a memory 231.
ADF 105, scanner unit 106, paper transport unit 1
07, the process unit 233, and the duplex unit 235 are controlled. Here, the post-processing unit 103 and the RADF 105 include a CPU 240 and a CPU 239, respectively.
The operation panel board 250 is a board for managing the operation panel 300 provided on the upper surface of the device, and
It has a PU 251 and a memory 252. Operation panel 3
00 is a liquid crystal display (LC
D) 302 and various operation keys 301 are provided,
The details will be described later.

Image data processing in the automatic document feeding copy mode in this digital copying machine will be described below. When the image of the original fed on the contact glass 104 by the RADF 105 is read by the scanner unit 106, the information is converted into digital image data by the CCD board 220 in the scanner unit 106 as described above, and the image processing board 210. To the image processing unit 212.

The image data is subjected to predetermined image processing in the image processing section 212, and then temporarily stored in the memory 214 via the memory / HDD control section 213. Then, after that, it is stored in the HDD 216 which is the image data storage means. After the processing up to this point has been completed for all the originals set in the RADF 105, the image data stored in the HDD 216 is read by the memory / HDD control unit 213, image processing is performed by the image processing unit 212, and pages are stored in the memory 214. Expand in order. This image data is supplied to the semiconductor laser 217 of the laser writing unit 108 via the laser control unit 215 to drive the semiconductor laser 217 to form an image.
When forming images on a plurality of copies, the processes from the reading from the HDD 216 to the image formation are repeated only a set number of times. Therefore, even when images are formed on a plurality of sets, the document need only be read once.

Next, the above-mentioned operation panel 300 will be described with reference to FIGS. 3 to 5. FIG. 3 is a diagram showing a configuration of the operation panel and a display example, and FIGS. 4 and 5 are diagrams showing another display example of the LCD, respectively. Operation panel 300
Has an operation key 301 and an LCD 302 as shown in FIG. The operation keys 301 include an interrupt key 313 for interrupting a copy operation relating to another copy mode during execution of the copy operation, a reset key 314 for resetting the set contents, and an instruction to stop the operation during the copy operation. Stop key 315 for starting, a start key 316 for instructing the start of the copying operation, and a finish display key 31 for instructing to display the finish state of the output image.
7. Numeric keypad 3 for entering numerical information such as the number of copies
Eighteen keys are provided.

The LCD 302 displays various keys and messages, and can detect an operation state of the displayed keys by a touch panel laminated on the keys. In FIG. 3, as an initial setting screen, a paper selection key 303 for selecting paper, a sort key 304 and a stack key 305 for specifying the alignment order of image-formed paper, and a staple for specifying the position of stapling processing. Key 30
6, 307, 308, a punch hole key 309 for setting punching processing, an aggregation key 310 for setting an aggregation mode in which images of a plurality of pages are reduced and formed on one sheet, an image A state in which a scaling key 311 for setting enlargement / reduction, a double-sided key 312 for setting a double-sided mode for forming an image on both sides of a sheet, and a density setting key 319 for setting an image density are shown. ing.

From the state shown in FIG. 3, the aggregation key 310, the scaling key 311, the double-sided key 3 displayed on the LCD 302 are displayed.
When any one of 12 is pressed, the display on the LCD 302 changes accordingly. For example, when the double-sided key 312 is pressed, the display on the LCD 302 is switched to the double-sided setting screen as shown in FIG. When the single-sided → double-sided key 402 is pressed, the single-sided original reading / double-sided image forming mode is set, and when the double-sided → double-sided key 403 is pressed, the double-sided original reading / double-sided image forming mode is set. Then, when the return key 404 is pressed, the screen is switched to the original screen shown in FIG. When the aggregation key 310 is pressed on the screen of FIG. 3, the display on the LCD 302 is switched to the aggregation setting screen as shown in FIG. Here, pressing the key 502 for every four sheets sets the 4-page aggregation mode in which an image for four pages is formed on one sheet, and pressing the key 503 for every eight sheets creates an image for eight pages on one sheet. The 8-page aggregation mode to be formed is set. When the return key 504 is pressed, the screen is switched to the original screen shown in FIG.

Next, the operation when copying the six originals shown in FIG. 6 by setting the post-processing in this digital copying machine will be described with reference to FIGS. 7 to 13. 7 to 13
FIG. 3 is a diagram showing a display example of an LCD during a copying operation in this digital copying machine. It should be noted that the single-sided original reading / double-sided image forming mode and the four-page combining mode are set before the start of copying, and the upper left side stapling process and punching process are performed as the post-processing by the staple key 306 and the punch hole key 309, respectively. Shall be set by.

After these settings, when the manuscript is set in the RADF 105 and the finish display key 317 shown in FIG. 3 is depressed, the images of all the manuscripts are read in as described above, and the image data is shown in FIG. It is stored in the HDD 216. After that, before performing image formation, this image data is expanded in the memory 214 in page order, the memory / HDD control unit 213 decimates and accesses the address, and transfers it to the CPU 251 of the operation panel board 250.
The memory 252 stores reduced image data for display, which is obtained by reducing the image data for image formation. Here, memory / H
The DD control unit 213 and the CPU 251 function as image data reducing means.

After accumulating all the reduced image data for each page in the memory 252, the CPU 251 processes the reduced image data based on the set post-processing and image forming mode information, and after the image formation. Generates a finished image showing the state when the selected post-processing is applied to the paper, and
A finished image is displayed on D302. Here, CPU
251 and LCD 302 function as a finished image display means. In the case of this example, first, the image shown in FIG. 7 is displayed. In FIG. 7, double-sided image formation is performed as specified, image formation is performed by combining four pages, and a finish image 606 showing the finish state of the first page of paper when the upper left staple processing and the punching processing are performed as post-processing, A page number display 602, a previous page key 603 and a next page key 604 for turning pages, and a return key 605 for ending the display of the finished image are also displayed.

When the next page key 604 is pressed here,
The CPU 251 generates a finished image of the next page and sets L
It is displayed on the CD 302. This screen is as shown in FIG.
When the stapling process is selected as in this example, the finished images from the second page to the page before the last page are displayed as a spread image as shown in FIG. In this example, since the number of originals is 6, the finished image is 3 pages, but in the finished image display, the blank page (the 4th page) on the back surface of the last (second sheet) sheet is displayed. Is the final page. Further, although the example in which the page to be displayed is designated by the next page key 604 is shown here, the page number can be input by the ten keys 318 and the displayed page can be determined by the # key. Therefore, here, the previous page key 603, the next page key 604, the ten key 318 and the CPU 251 function as a finish page designating means.

When the user presses the return key 605 after confirming the finished state with the finished images of FIGS. 7 and 8, the CPU 251 displays an output permission / prohibition input screen as shown in FIG. 9 on the LCD 302. The user may press the YES key 802 when he or she wants to output in the confirmed finished state, and press the NO key 803 when he wants to change the setting. When the YES key 802 is pressed, the HDD2
Image formation is performed as described above on the basis of the image data stored in 16, and post-processing set by the post-processing unit 103 is performed on the paper on which the image has been formed. Output is obtained.

When the NO key 803 is pressed, C
The PU 251 displays the post-processing change screen as shown in FIG.
Display on D302. On this screen, staple keys 902, 903, 9 for setting the position of staple processing
04 and punch hole key 90 for setting punching processing
5 is displayed, and the user can change the setting of the post-processing with these keys. FIG. 10 shows a state in which the position of the stapling process is changed to the lower left by the stapling key 903 and the punching hole key 905 is pressed to cancel the punching process.

When the key 906 for returning to the finishing screen is depressed with the new post-processing selected in this way, the CP
The U 251 again generates a finished image based on the newly selected post-processing information and displays it on the LCD 302. Here, the position of the stapling process was changed to the lower left and the punching process was canceled, so the finished image this time is shown in FIG.
As shown in. Also here, when another page is designated by the page turning key or the ten-key pad, a spread image of the page is displayed as shown in FIG. However, the direction in which the page opens changes due to the change in the stapling position. If the stop key 907 is pressed in the state of FIG. 10, the setting is erased and the initial setting screen is displayed again.

Here, the generation of the finished image will be described with reference to FIG.
This will be described in more detail with reference to FIGS. FIGS. 13 to 18 are diagrams showing examples of images stored in advance in the memory in order to generate a finished image in this digital copying machine. As already explained, CPU2
Reference numeral 51 is a memory 252 of the operation panel board 250, which processes the reduced image data based on the information of the post-processing and the image forming mode that has been set to generate a finished image.
In advance, data of a finished image obtained by performing a stapling process on a blank sheet is stored for each position of the stapling process, and the CPU 251 synthesizes the image data and the image data to be formed. By doing so, a finished image to be displayed is generated.

Here, the data stored in the memory 252 is, for example, an image shown in FIG. 13 when the stapling position is at the lower left, and is shown in FIG. 14 when the stapling position is at the upper left. It is the data of such an image. In the latter, the paper is displayed at a position slightly lower than the former, but this is to ensure that the image of the double-page spread fits neatly within the screen when it is displayed.
Further, in the memory 252, as shown in FIGS. 15 to 18, the spread state and the finished image of the blank page of the final page are also stored for each position of the stapling process.
When displaying the two-page spread or the finished image of the final page, the data of these images and the reduced image data of the image to be formed are combined to generate the finished image to be displayed. Although the image in the case where the stapling position is at the center is not shown in the drawing, of course, the data of the image corresponding to this is also stored in the memory 252.

Further, the memory 252 also stores an image of punched holes generated by the punching process, and when the punching process is selected, the finished image generated by the above-described synthesis is further added to the image. A punched image is combined to generate a finished image to be displayed. Although the case where the post-processing that can be selected is the stapling processing and the punching processing has been described here, the post-processing other than this can be selected, or even if only one of them can be selected. The memory 252 stores image data obtained by performing post-processing on a blank sheet and / or image data of changes (holes in the above case) caused by the processing.
It may be stored in the memory, and these and the reduced image data of the image to be formed are combined to generate and display a finished image.

Next, using the flowchart of FIG.
The operation of this digital copying machine will be further described with a focus on the processing of displaying a finished image. FIG. 19 is a flow chart for explaining the operation of the digital copying machine. The control unit of the digital copying machine starts the process shown in the flowchart of FIG. 19 when the finish display key 317 is pressed while the original is set on the RADF 105.

First, the presence / absence and position of stapling processing and the post-processing information regarding presence / absence of punching processing set in step S1 are acquired. Next, in step S2, the RADF 105 feeds the contact glass 104 on the contact glass 104 according to the setting of the reading mode to read the image of the original, and the image processing is performed according to the setting of the output mode to create output image data to generate the HDD 216. Accumulate in. When the accumulation of one page of the output image is completed, the process proceeds to step S3 to count the number of created images as the page number. And step S
If there are still manuscripts to read, go to step S4.
Return to 2 and repeat the process.

If the reading is completed in step S4, the process proceeds to step S5, and the CPU 251 operates as described above.
Generates reduced image data and stores it in the memory 252, and combines the reduced image data with blank image data and hole image data that have been stored in advance according to the post-processing information to generate a finished image of the first page. And is displayed on the LCD 302.
Then, in step S6, it is determined whether or not the return key 605 has been pressed. If not pressed, step S
Proceed to step 7 to determine whether or not a page has been selected. Here, as described above, page selection can be performed by pressing the previous page key 603 or the next page key 604, or by inputting the page number with the ten keys 318 and pressing the # key. If there is a page selection, the CPU 251 proceeds to step S8 and generates a finished image according to the information of the new page number and the post-processing information, and the LCD 30
Display on 2. Then, the process returns to step S6 to repeat the process. If no page is selected in step S7, the process returns to step S6 and the process is repeated.

On the other hand, if the return key 605 is pressed in step S6, the process proceeds to step S9 to display the output permission / prohibition input screen shown in FIG. 9 to request the user to select the permission / prohibition of output. If either is selected, the process proceeds to step S10 to determine whether or not to output. If not, the process proceeds to step S11 to display the post-processing change screen shown in FIG. Accept input. Then, the process proceeds to step S12, it is determined whether or not the key 906 for returning to the finish screen is pressed, and if it is pressed, the process proceeds to step S16 to acquire the newly set post-processing information, and then the process returns to step S5 to perform processing. repeat. Step S
If it is not pressed in step 12, the process proceeds to step S13 to determine whether or not the stop key 907 is pressed. If it is pressed, the process proceeds to step S15 to display the initial screen shown in FIG. If the button is not pressed in step S13, the process returns to step S12 to repeat the process.

On the other hand, if it is determined in step S10 that the output is to be performed, the process proceeds to step S14, an image is formed on a sheet based on the image data stored in the HDD 216 as described above, and the image-formed sheet is formed. The post-processing set for is performed. Then, the process proceeds to step S15, the initial screen shown in FIG. 3 is displayed, and the process ends. According to such a digital copying machine, the finished state can be displayed and confirmed on the operation panel before the image formation on the sheet, so that the sheet, the toner and the like are wasted for the operation mistake or the confirmation. Moreover, the operability can be improved.
Further, in the above embodiment, a digital copying machine was described as an embodiment of the image forming apparatus, but it goes without saying that the present invention can be applied to other image forming apparatuses such as a printer and a digital multi-functional peripheral.

[0034]

As is apparent from the above description, according to the image forming apparatus of the present invention, the finished state can be displayed and confirmed on the operation panel before the image formation on the sheet, so that an operation error can be made. It is possible to prevent waste of paper, toner, etc. for confirmation and improve operability. Further, by providing a means for designating the page of the finished image to be displayed or displaying the finished image other than the first page and the last page in a spread state, the finished state of each page can be confirmed more easily. As a result, setting mistakes can be further reduced.

Further, if the data of the blank finish image and the image of the change thereof are stored in advance and the finish image is displayed by combining with the display image data, the finish image can be displayed by a simpler process. It will be possible. Furthermore, when another post-process is selected after the finish image is displayed, the finish image based on the selection is displayed again, so that even if the initial finish is not the desired one. The setting can be easily changed and the result can be confirmed, and the operability can be further improved.

[Brief description of drawings]

FIG. 1 is a diagram simply showing a configuration of a digital copying machine according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of the digital copying machine, focusing on a control system.

FIG. 3 is a diagram showing a configuration of an operation panel and a display example.

FIG. 4 is a diagram showing a display example of a double-sided setting screen on the LCD of the operation panel.

FIG. 5 is a diagram showing a display example of an aggregation setting screen in the same manner.

FIG. 6 is a diagram showing an example of a document for explaining the operation of the digital copying machine according to the embodiment of the present invention.

FIG. 7 is a diagram showing a display example of a finish screen of the first page.

FIG. 8 is a diagram showing a display example of finishing screens for the second page and the third page.

FIG. 9 is a diagram showing a display example of an output permission / inhibition input screen.

FIG. 10 is a diagram showing a display example of a post-processing change screen in the same manner.

FIG. 11 is a diagram showing a display example of the finishing screen of the first page, which also reflects the change of the post-process on the post-process change screen.

FIG. 12 is a diagram showing a display example of finishing screens for the second page and the third page.

FIG. 13 is a diagram showing an example of an image stored in a memory in advance in the digital copying machine.

FIG. 14 is a diagram showing another example of another image.

FIG. 15 is a diagram showing an example of still another image.

FIG. 16 is a diagram showing an example of still another image.

FIG. 17 is a diagram showing an example of still another image.

FIG. 18 is a diagram showing still another example of the image.

FIG. 19 is a flowchart for explaining the operation of the digital copying machine.

[Explanation of symbols]

101: Scanner Section 102: Laser Recording Section 103: Post-treatment part 104: Contact glass 105: automatic two-sided document feeder 106: Scanner Unit 107: Paper Conveying Section 108: Laser writing unit 109: Electrophotographic process department 210: Image processing board 211, 232, 251: CPU 212: Image processing unit 213: Memory / HDD control unit 214, 231, 252: Memory 215: Laser control unit 216: HDD 217: Semiconductor laser 220: CCD board 230: Machine control board 250: Operation panel board 300: Operation panel 301: Operation key 302: LCD

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G03G 21/00 386 G03G 21/00 386 H04N 1/387 H04N 1/387 F term (reference) 2C087 AA18 AB01 BD06 BD07 CA03 CB06 CB16 CB20 DA16 2H027 ED29 FA24 FD00 FD08 GA43 GA45 GB13 2H072 GA02 GA08 3F108 GA02 GB01 GB07 HA02 HA32 5C076 AA19 AA22 AA37 AA40 CA02 CA08

Claims (6)

[Claims] 1. An image data input means for inputting image data of an image to be formed, an image data storage means for storing the image data, and an image on a sheet based on the image data stored in the image data storage means. In an image forming apparatus having an image forming unit for forming a sheet, a post-processing unit for performing a post-processing on a sheet after image formation, and a post-processing selecting unit for selecting a type of the post-processing, Image data reducing means for converting the stored image data into reduced size image data, and a state in which a post-processing selected by the post-processing selecting means is applied to a sheet on which an image is formed based on the image data before reduction. And a finished image display means for processing the finished image showing the processed image data of the reduced size and displaying the finished image. 2. The image forming apparatus according to claim 1, further comprising a finish page designating unit that designates a page of a finish image to be displayed by the finish image displaying unit. 3. The image forming apparatus according to claim 1, wherein the finish image display means performs image processing on a blank sheet to perform post-processing that can be selected by the post-processing selecting means, or the image data. Image data of a change caused by processing is stored in advance, and image data of the image obtained by performing processing for performing the post-processing on a blank sheet according to the type of the post-processing selected by the post-processing selecting unit or the image data of the change An image forming apparatus comprising: means for displaying the finished image by synthesizing the image data of the reduced size with the image data of the reduced size. 4. The image forming apparatus according to claim 3,
The post-processing that can be selected by the post-processing selecting means is stapling and punching processing, and the finished image display means performs the stapling processing on a blank sheet according to the type of post-processing selected by the post-processing selecting means. An image forming apparatus, comprising means for displaying the finished image by synthesizing the data of the performed image, the image data of the hole generated by the punching process, and the image data of the reduced size. 5. The image forming apparatus according to claim 1, wherein the post-processing that can be selected by the post-processing selection means includes stapling processing, and the finished image display means includes the post-processing. When the stapling process is selected by the selecting unit, the image forming device further comprises a unit for displaying the finished image as an image in a spread state corresponding to the position to be stapled for pages other than the first page and the last page. Image forming apparatus. 6. The image forming apparatus according to claim 1, wherein the finished image display means is
When the post-processing selecting unit newly selects the post-processing after displaying the finish image, the image forming apparatus further includes a unit for displaying the finish image again based on the selection. .