JP2003296090A - Image forming device and print image display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To recognize a state after a post-processing as an image before a practical printing. <P>SOLUTION: This image forming device 100 is provided with a setting means 301, a ROM 302, an operating system 303, a controller 304, and a display device 305 and this constitution allows the operating system 303 to transmit print data read by an image read part 80 to a controller 304. When the post- processing and a preview display are specified to the print data, a completion expectation image print data D4 of a recording sheet are formed by combining the print data with the prescribed post-processing image data read from the ROM 302 based on the post-processing mode. The completion expectation image of the recording paper sheet is previewed on the display device 305 based on the completion expectation image print data D4, so that the user can recognize the state of the print paper sheet after the post-processing on the display so as to prevent nonconformity of the post-processing position. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for application to a copying machine or a printer having a post-processing function such as center folding, punching or stapling of a recording sheet on which an image has been formed, and a print image display. It is about the method.

[0002]

2. Description of the Related Art In recent years, an image forming apparatus having a post-processing function of saddle-stitching and folding a sheet after image formation, for example, a copying machine is often used. According to this type of copying machine, a post-processing device is attached to an image forming apparatus main body composed of a document conveying section, an image reading section, and an image forming section. After adding a cover etc. to the recording paper after image formation,
Saddle stitching is performed with staples, and then center folding is performed to form a booklet. Further, some copying machines of this type are additionally provided with a function of performing post-processing such as punching processing for forming binding holes in recording paper after image formation, processing for attaching a cover, and folding processing.

When a printed matter is created using an image forming apparatus having such a post-processing function, a print preview mode is designated first in order to confirm the actual printed state before printing. Then, the image reading unit creates print data. The document is transported by the document transport unit, and the image of the document is scanned and read by the image reading unit during the transport process.
Print data is created. Next, a print image is displayed on the display screen before the actual printing, and the state after printing is confirmed with this print image. FIG. 6 shows an example of a preview display of print data. The user determines whether or not the state after printing is good with this print image. When it is confirmed that the print image is good on the display screen, printing (image formation) is executed by designating execution of printing. In this case, an image is formed on the recording paper based on the print data. Next, post-processing of recording paper after image formation is performed.

As described above, the image forming apparatus can confirm the printing condition on the display screen before printing the print data created by the image reading unit.

[0005]

However, in the image forming apparatus having the post-processing function according to the conventional method, there is a problem that the state of the recording paper after the post-processing cannot be confirmed before the actual printing. Therefore, there is a problem that the position of the post-processing on the recording paper after the image formation is different from the position intended by the user. For example, when the image-formed sheet is saddle-stitched and center-folded, the center-fold position is different from the position intended by the user. Further, when punching the paper after image formation, holes are punched so as to punch out a part of the printed image. Further, when the stapling process is performed on the recording paper after the image formation, the stapling ends up overlapping the printed image. When such a problem of the post-processing position occurs, it is very uneconomical to discard the completed sheet. Therefore, the present invention solves the above-mentioned problems, and provides an image forming apparatus and a print image display method that enable the state of a recording sheet after post-processing to be confirmed on a display screen before actual printing. The purpose is to do.

[0006]

In order to solve the above problems, an image forming apparatus according to the present invention forms an image on a recording sheet based on print data and performs post-processing on the recording sheet after the image formation. In the image forming apparatus, storage means for storing a plurality of post-processing image data showing a predicted completion image after post-processing of recording paper, preview display of print data and / or
Or setting means for setting the post-processing mode relating to the recording paper,
Control means for reading the post-processing image data corresponding to the post-processing mode set by the setting means from the storage means, synthesizing the post-processing image data and print data based on the preview display, and controlling the display, and the control means. Display means for displaying a preview of a predicted completion image after the post-processing of the recording sheets synthesized by the means.

According to the image forming apparatus of the present invention, when the recording paper state after post-processing is displayed as a print image, for example, the user uses the setting means to set the preview display and the post-processing mode. The control means reads the post-processing image data from the storage means based on the post-processing mode set by the setting means, synthesizes the post-processing image data and print data, and predicts the completion image of the recording paper after the post-processing. Print data is created. The post-processing completion prediction image print data is output to the display means, and the display means displays the post-processing completion prediction image of the recording sheet.

Therefore, since the state of the recording paper after the post-processing can be confirmed on the display screen before the actual printing, it is possible to prevent the position of the post-processing from being different from the position intended by the user. It will be possible.

The print image display method according to the present invention is a method of displaying a predicted completion image of a recording sheet which has undergone printing and post-processing based on print data, and is a completion after post-processing of the recording sheet. A plurality of post-processing image data showing an expected image is created in advance, and when the expected completion image of the recording paper is displayed, the preview display setting of the print data for printing the recording paper and the recording after the print processing are performed. Each post-processing mode for post-processing the paper is set, and print data based on the preview display settings and post-processing image data based on the post-processing mode settings are combined to print the expected completion image of the recording paper after post-processing. It is characterized by creating data and displaying a post-processing completed completion image of the recording paper based on the completed completion image print data created here. That.

According to the print image display method of the present invention, when the state of the recording paper after post-processing is displayed as a print image, the print data based on the setting of the preview display and the post-processing based on the setting of the post-processing mode are performed. The image data and the image data are combined to create post-processing recording completion image print data of the recording sheet, and then the completion image is displayed.

Therefore, since the state of the recording paper after the post-processing can be confirmed on the display screen before the actual printing, it is possible to prevent the position of the post-processing from being different from the position intended by the user. Becomes

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An image forming apparatus and a print image display method as embodiments of the present invention will be described below with reference to the drawings. When the preview display and the post-processing mode are designated, the image forming apparatus 100 according to the embodiment of the present invention reads out predetermined post-processing image data corresponding to the designated post-processing mode from the storage unit, and reads it. The print data is combined with the print data to create a print completion image print data, and based on the print data, the print completion image is displayed on the display means.

FIG. 1 shows a configuration example of an image forming apparatus 100 as an embodiment according to the present invention. The image forming apparatus 100 is an apparatus that forms an image on a sheet P and then post-processes the sheet P. The image forming apparatus 100 includes a document conveying section 70, an image reading section 80, an image forming section 90, a post-processing apparatus 200, and a print image. A display control system 300 is provided. Further, before actual printing, a display device (not shown) for preview-displaying the state of the recording paper after post-processing is provided.

In the original document transport section 70, an original document D from a bundle of original documents placed on the original document tray 1 is fed by an original document feeding means 2 including a feed roller, a separation transport roller and a registration roller.
The sheets are separated one by one, conveyed by the conveying drum 3, and an image is read under the conveying drum 3. The document D from which the image is read is discharged to the document discharge tray 4. Document sensor S1
Is provided in the document conveyance path just before the image reading position,
The leading edge and the trailing edge of the document D are detected.

In the image reading section 80, the document D moving under the transport drum 3 is illuminated by the illumination light source 10, and the reflected light from the document D is imaged by the line CCD by the optical system including the mirror 11 and the lens 12. Scanning reading is performed by projecting on the element 13.

The image forming section 90 is adapted to form an image on the recording paper P by an electrophotographic method. The image forming unit 90 is provided with an exposure device 22, which exposes a laser diode that emits light based on digital image information (print data) created by the image reading unit 80 and a light beam from this laser diode. It has an optical system that guides it onto the body 20.

The image forming unit 90 is provided with a drum-shaped photoconductor 20 and an image forming process unit 21 in addition to the exposure device 22, forms an electrostatic latent image on the photoconductor 20, and forms a toner image by development. Then, the toner image is transferred onto the recording paper P by transfer.

Further, recording paper supply units 30, 31, 32 are provided below the image forming unit 90 to supply the recording paper P to the photoconductor 20. A fixing device 23 is provided on the downstream side of the photoconductor 20 to fix the toner image on the recording paper P. A switching guide 33 is provided on the downstream side of the fixing device 23, and the recording paper P that has been subjected to the fixing process is discharged as it is, or a reversing unit or a backside image forming paper supply unit 36.
It is made to switch whether to lead to. The back side image forming paper supply unit 36 is provided on the recording paper supply unit 30.
In addition, a paper discharge roller 34 is provided on the downstream side of the switching guide 33, and the manual paper feed unit 3 is provided on the side surface of the image forming apparatus main body.
5 are provided.

In the image forming section 90, the photoconductor 20 is rotated by an image forming start signal, and the recording paper feeding section 3 is driven.
The recording paper P is fed from 0, 31 or 32. The toner image formed by the image forming process unit 21 on the rotating photoconductor 20 is transferred onto the recording paper P. The recording paper P fixed by the fixing device 23 is directly processed by the post-processing device 2
After being transported to 00 or being reverse-faced, the post-processing device 2
00 or the back-side image forming paper feed unit 36 is selected by the switching guide 33. That is,
A post-processing device 200 is detachably attached to the downstream side of the image forming unit 90, and recording paper (paper) after image formation is formed.
Is saddle-stitched and / or center-folded.

In the post-processing apparatus 200, the image forming section 90
The discharge tray 40 on which the recording paper P discharged from the stack is placed, the shift discharge unit 43 that shifts the discharge position for each copy, the shift discharged recording paper P and the stapled recording paper P are discharged. Paper discharge tray 51 for paper, stapler 4 as binding processing means
6, a half-folding means 60, a paper ejection tray 52 for ejecting the half-folded recording paper P, a paper feed tray 41 on which a paper Q used for a front cover, front and back paper, a partition, etc., and a post-processing device 20
The above-mentioned various processing units of No. 0 are provided with the transport path 42 for transporting the recording paper P and the paper Q.

In the mode in which the recording paper P is discharged from the image forming section 90 in the discharge order without performing the binding processing and the shift processing in the post-processing device 200, the recording paper P is discharged to the discharge tray 40. . In the post-processing mode in which post-processing such as saddle stitching processing and inter-sheet attachment is performed, the recording paper P ejected from the image forming unit 90 forms the conveyance roller 4 that constitutes the conveyance path 42.
20 to 424, the sheet is conveyed and stacked on the intermediate stacker 47 formed by the conveyor belt 44 and the stopper 48.

As the post-processing mode, for example, a shift mode, a staple mode, a center folding mode, a punch mode, an intersheet mode, etc. are prepared. This shift mode means that a predetermined recording paper P
This is the operation of changing the discharge position for each bundle of sheets and discharging the sheets. When the shift mode is selected in the post-processing device 200, the recording paper P is sent to the shift unit 43, and the shift unit 43 shifts the recording paper P in the direction perpendicular to the transport direction and discharges it to the discharge tray 51. .

The staple mode is a predetermined recording paper P.
Is an operation of performing the binding process for each bundle of sheets and ejecting the recording paper P. When this stapling mode is selected, the recording paper P is conveyed onto the conveyor belt 44, and the stopper 48 arranges the recording paper P into a predetermined number. Then, after being stapled by the stapler 46, it is transported by the transport belt 44 and discharged to the discharge tray 51.

The center-folding mode is an operation in which center-folding is performed for each predetermined number of sheets. When the center folding mode is selected, the recording sheet P is sent to the half-folding means 60, and when a predetermined number of sheets are fed, after the center folding processing is performed, the discharge tray 52 is discharged.
Is ejected.

The punching mode is an operation of ejecting the recording paper P by performing a process of forming a punching hole for binding for each predetermined bundle of recording papers P. When this punch mode is selected, the recording paper P is conveyed onto the conveyor belt 44 and is aligned by the stopper 48 to a predetermined number. Then, after being punched by the punch head provided on the stapler 46, the sheet is conveyed by the conveying belt 44 and discharged to the sheet discharge tray 51.

Further, the inter-sheet mode means an operation of attaching a cover sheet or a partition sheet for partitioning a cover sheet or recording sheets to a bundle of recording sheets P on which an image is formed. This post-processing device 2
A sheet feeding unit 410 is provided at 00, and the sheet Q related to the intersheet is placed on the sheet feeding tray 41. The paper Q fed by the paper feeding means 410 is the conveyance rollers 421, 422, 42 which are the constituent parts of the conveyance path 42.
The recording sheet P is attached to the recording paper P by the intermediate stacker 47 which is conveyed by the conveying belts 44 and the stopper 48. The post-processing device 200 can also perform a binding process for binding a bundle of recording sheets P to which an intersheet is attached.

Further, the print image display control system 300 is
Setting means 301 for setting preview display and post-processing mode, ROM 30 for storing post-processing image data
2. An operating system 303, and a controller 304 for controlling the operation of displaying a preview of a predicted completion image after post-processing of recording paper.

FIG. 2 is a block diagram showing a configuration example of the print image display control system 300 of the image forming apparatus 100.
In FIG. 2, D1 is an input signal from the setting means 304,
D2 indicates post-processing image data, and D3 indicates print data.

The setting means 301 is composed of, for example, operation keys. Before the image is formed, the user sets the setting means 3
Using 01, the printer driver displays the preview and sets the post-processing mode for the paper on which the image has been formed.

The ROM 302 stores a plurality of post-processing image data indicating a state of the post-processing recording paper as a storage means. Based on these post-processing image data, for example, post-processing states such as a center folding position, a binding position, a punch position, and a double-sided layout are displayed on the display screen of the display device 305 as a two-dimensional or three-dimensional post-processing image. It is made to display. FIG. 3 shows a display example of post-processing image data. FIG. 3A is a display example of post-process image data for performing a process of folding a sheet after image formation during saddle stitching. FIG. 3B is a display example (three-dimensional image) of post-processing image data of the center-folded cover. Figure 3
(C) is a display example of post-processing image data for punching.

The operating system 303
Is a basic program for operating and managing the operation of the image forming apparatus 100. The print data read by the image reading unit 80 is transmitted to the controller 304 by the operating system 303. A printer driver that controls the operation of the image forming unit is installed in the operating system 303. When the user wants to confirm the expected completion image of the recording paper, this printer driver instructs the preview display of the print data.

The print data transferred from the image reading section 80 can be edited on the operating system 303 using application software.
Further, the controller 304, as control means, determines whether there is a first determination means for determining whether or not there is an instruction to display a preview of the print data transferred from the operating system 303, and whether or not the post-processing mode is set. It has a second judging means for making a judgment and a composing means for developing the print data and combining it with predetermined post-processing image data to create print data for predicting completion of the recording paper.

The controller 304 receives the print data sent from the operating system 303, expands the received print data, reads predetermined post-processing image data from the ROM 302 based on the post-processing mode, and performs the post-processing. Control for combining the image data and the print data and displaying them on the display device 305 is performed.

Further, the display device 305 is a device having a display screen composed of, for example, an LCD (Liquid Crystal Display) as a display means. It is used, for example, to display a preview of a print image or a predicted completion image of a recording sheet including the print image. When the preview display is performed using the display device 305, a predicted completion image of the recording paper is displayed in two dimensions or three dimensions based on the post-process image data. During the printing operation, the user confirms the recording paper state after the post-processing on the display screen of the display device 305.

Further, the display device 305 is provided with a button for executing printing and a button for canceling.
The user can use these two buttons to instruct whether or not to print the print data preview-displayed on the display device 305. In addition, the image forming apparatus 100
The respective pieces of hardware are connected by a connection cable that electrically connects them. As a connection means, a parallel port (Parallel port), a LAN (Local Area Network)
Alternatively, a USB (Universal Serial Bus) or the like can be considered.

Hereinafter, a print image display method of the image forming apparatus 100 will be described with reference to FIGS. 2 and 4. FIG. 4 is an operation flowchart of the print image preview display of the image forming apparatus 100. Using the image forming apparatus 100, the image reading unit 80 scans and reads an image on a document to create print data, and the image forming unit 90 forms an image on a recording sheet based on the print data.
When post-processing the recording paper on which the image is formed, the user first confirms the post-processing recording paper status on the display screen before the actual printing.
In step 1, the printer driver installed in the operating system 303 specifies a preview display and a post-processing mode. A control signal D1 indicating the setting of the preview display and the post-processing mode from the setting unit 301 is transferred to the operating system 303 via the controller 304. The printer driver specifies the preview display and post-processing mode.

Next, in step S11, the image reading unit 80
The print data D3 is created with. In this case, the document is passed through the image reading unit 80, the image on the document is scanned and read by the line CCD provided in the image reading unit 80, and print data is created. Next, in step S12, the operating system 303 transfers the print data D3 created by the image reading unit 80 to the controller 304. Also,
When the preview display and the post-processing are designated, the information indicating them is also transferred to the controller 304 at the same time.

Next, in step S13, the controller 3
04 expands the print data D3 transferred from the operating system 303 into a state in which a preview can be displayed. Next, in step S14, it is determined whether there is a preview display designation. If the preview display is not designated, it is directly transferred to the output device in step S17. If it is determined in step S14 that the preview display is designated, then in step S15,
It is determined whether or not post-processing is designated. When it is determined that the post-processing is designated, the post-processing image data D2 is read from the ROM 302 in the next step S16.

Next, in step S17, the post-processing image data D2 read from the ROM 302 and the expanded print data D3 are combined to create the data D4 of the predicted completion image of the recording paper including the post-processing position. To do. Next, in step S18, a preview image of the recording sheet completion prediction image is displayed on the display screen of the display device 305 based on the created recording sheet completion prediction image print data D4. FIG. 5 shows an example of an expected image of completion of recording paper. FIG. 5A is a display example of a predicted completion image in the case of post-processing for folding a sheet after image formation during saddle stitching. FIG. 5B is a display example of a predicted completion image of the center-folded cover, and in this case, a three-dimensional display example is shown. Figure 5
(C) is a display example of a predicted completion image in the case of post-punching processing.

Here, the user determines whether or not the layout of the print data and the position of the post-processing are appropriate based on the predicted completion image of the recording paper preview-displayed on the display screen of the display device 305, and the printing is executed based on that. Instruct whether to do. For example, when the displayed content is good, the print execution button provided on the display device 305 is used to instruct the print execution. If the post-processing position is inappropriate, the display device 3
The cancel button provided on 05 is used to instruct cancellation.

Next, in step S19, the controller 3
04 determines whether or not there is a print execution instruction. If it is determined that the print execution instruction has been given, step S20.
Then, the print data D3 displayed in preview is transferred to the image forming unit 90. Then, in step S21, the image forming unit 90 forms an image on the recording paper based on the transferred print data, and the post-processing unit 200 further performs post-processing (for example, a binding hole is formed on the recording paper after the image formation). After performing the punching process for opening, the process for attaching a cover, the folding process, etc.), the operation is completed.

If it is determined in step S19 that a cancel instruction has been issued, printing is not executed, the process proceeds to step S22, and in step S22 the predicted completion image printing data D4 of the recording paper is discarded.

If no post-processing is designated in step S15, a print image of only print data is displayed in step S18. The user determines whether or not the layout of the print data is appropriate based on the print image preview-displayed on the display screen, and based on this, instructs whether or not to execute the printing. For example, if the displayed content is good, printing is instructed.

Next, in step S19, the controller 3
04 determines whether to execute printing. Printing is executed. In step S20, the preview-displayed print data is transferred to the image forming unit 90. Next, in step S21, the image forming unit 90 forms an image on the recording paper based on the transferred print data, and then the operation ends.

As described above, in the present embodiment, the print data read by the image reading unit 80 is transmitted to the controller 304 by the operating system 303 when the post-processing recording paper state is displayed as a print image. It When the preview display and the post-processing mode are specified for this print data, predetermined post-processing image data corresponding to the post-processing mode is read from the ROM 302, and the post-processing image data and the print data are combined to print on the recording paper. The expected completion image print data is created, and the expected completion image of the recording sheet is displayed on the display device 305 based on the expected completion image print data. This allows the user to check the post-processing state of the recording paper on the display screen before the actual printing.

As a result, during the center-folding process, the position of the center-folding is different from the position intended by the user, and when performing the punching process, a hole is formed so as to punch out a part of the printed image. It is possible to prevent problems such as opening, and problems such as stapling overlapping the printed image when performing the stapling process.

In the above-described embodiment, the image forming apparatus 100 that creates print data by the image reading unit is shown, but the present invention is not limited to this. For example, the present invention can be similarly applied to a printer device having a display device and a post-processing device. In this case, print data is created by an external device such as a computer in which application software such as a word processor is installed, and transferred to the printer device. In the printer device, the print preview display and the post-processing mode are designated, a predicted completion image of the recording paper is displayed on the display screen before the actual printing, and the recording paper state after printing is confirmed by the predicted completion image. As the printer device, for example, a laser printer or an inkjet printer can be considered.

[0048]

As described above, according to the image forming apparatus of the present invention, when an image is formed on recording paper based on print data and post-processing is performed on the recording paper after image formation, The post-processing image data corresponding to the set post-processing mode is read out, the post-processing image data is combined with the print data based on the preview display, and control means for controlling the display is provided. A preview image of the expected completion image after the paper post-processing is displayed.

With this configuration, the state of the recording paper after post-processing can be confirmed on the display screen before the actual printing, so that the position of the post-processing is prevented from being different from the position intended by the user. It becomes possible.

Further, according to the print image display method of the present invention, a plurality of post-processing image data indicating a post-processing post-processing completion expected image of the recording paper which has undergone the print processing and the post-processing is created in advance, When displaying the predicted completion image of this recording paper, set the preview display of the print data for printing this recording paper and the post-processing mode for post-processing the recording paper after printing processing, and set the preview display. The print data based on the setting of (1) and the post-processing image data based on the setting of the post-processing mode are combined to create the predicted completion image print data of the post-processing recording paper.

With this configuration, it is possible to display the completion prediction image of the recording paper after the post-processing based on the completion prediction image print data. Therefore, before the actual printing, the state of the recording paper after the post-processing can be confirmed on the display screen, so that it is possible to prevent the position of the post-processing from being different from the position intended by the user. This makes it possible to prevent a problem that the position of post-processing such as center folding, punching or stapling is different from the position intended by the user.

The present invention is extremely suitable when applied to a copying machine or printer having a post-processing function such as center folding, punching or stapling of the recording paper after image formation.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a configuration example of an image forming apparatus as an embodiment according to the invention.

2 is a block diagram showing a configuration example of a print image display control system of the image forming apparatus 100. FIG.

FIG. 3 is a diagram showing a display example of a post-processing image.

4 is an operation flowchart of a print image display of the image forming apparatus 100. FIG.

FIG. 5 is a diagram illustrating a display example of a predicted completion image of a recording sheet.

FIG. 6 is a diagram showing an example of a print data preview display.

[Explanation of symbols]

2 Document feeder 20 photoconductor 21 Image forming process section 22 Exposure equipment 23 Fixing device 46 stapler 60 means for folding 70 Document Feeder 80 Image reading section 90 Image forming unit 100 image forming apparatus 200 Aftertreatment device 300 Print image display control system 301 operating system 302 controller 303 ROM (storage means) 304 Setting means 305 display device

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04N 1/387 H04N 1/387 5C076 // B41J 21/00 B41J 21/00 Z F term (reference) 2C187 AC06 AD04 AE01 BF42 CD17 CD18 2H027 EE07 FA24 FA27 FA30 FD08 GA43 GB14 ZA07 3F108 GA01 GB01 GB03 GB07 HA02 HA39 5B021 AA01 AA19 BB02 LE00 PP08 5C062 AA05 AB22 AB23 AB35 AC05 AC22 AC24 AE01 5C076 AA19 A22

Claims (4)

[Claims] 1. An image forming apparatus for forming an image on a recording sheet based on print data and performing post-processing on the recording sheet after the image formation, wherein a plurality of post-processing images showing a predicted completion image after post-processing the recording sheet. Storage means for storing processed image data, setting means for setting a preview display of the print data and / or a post-processing mode for the recording paper, and post-processing image corresponding to the post-processing mode set by the setting means Data is read from the storage means, control means for controlling the display by synthesizing the post-processed image data and print data based on the preview display, and completion after post-processing of the recording paper synthesized by the control means. An image forming apparatus comprising: a display unit for displaying a preview of a predicted image. 2. The control means comprises a first judgment means for judging whether a preview display of the print data is designated, and a second judgment means for judging whether the post-processing mode is set. And a combination creating means for creating a predicted completion image of the post-processed recording paper by combining the print data and the predetermined post-processing image data on the basis of the judgment results by the first and second judging means. The image forming apparatus according to claim 1, further comprising: 3. A method of displaying a predicted completion image of a recording sheet that has undergone print processing and post-processing based on print data, and a plurality of post-processing images showing a predicted completion image of the recording sheet after post-processing. Post-processing mode in which data is created in advance and preview display of print data for printing the recording paper and post-processing of the recording paper after printing processing are performed when the expected completion image of the recording paper is displayed. And the post-processing image data based on the setting of the preview display and the post-processing image data based on the setting of the post-processing mode are combined to create the print data of the predicted completion image of the recording paper after the post-processing. A method for displaying a print image, characterized in that a post-processing post-processing completion image of a recording paper is displayed based on the created completion image print data. 4. A judgment is made as to whether or not a preview display of the print data is designated, a judgment is made as to whether or not the post-processing mode is set, and it is judged that a preview display of the print data is designated. Further, when it is determined that the post-processing mode is set, the print data and the predetermined post-processing image data are combined to synthesize a post-processing recording paper completion expected image. The method for displaying a print image according to item 3.