JP3645188B2 - Image forming apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image forming apparatus such as a printer or an electrophotographic copying machine. More specifically, the present invention relates to an image forming apparatus capable of temporarily storing a read original image and outputting the stored original image. is there.
[0002]
[Prior art]
In a conventional image forming apparatus, for example, a digital copying machine described in Japanese Patent Application Laid-Open No. 11-275304, a function for outputting a double-sided original image and a sorting function for sequentially sorting sheets output from the digital copying machine ( When n originals are set and they are copied in m copies, n originals are read into the memory and n copies are copied for each copy) or group function (n originals are set Are provided with a variety of input / output processing modes, such as a function of copying n sheets of originals into a memory and copying m sheets per page.
[0003]
In recent years, an electronic sort function has been developed that scans the images of all documents to be copied, temporarily stores the image data in a memory such as a hard disk, and repeatedly reads the image data of any document from the memory and prints it out. Digital copiers equipped are known.
[0004]
According to such a digital copying machine, it is possible to discharge the copy sheets in a sorted state without having a sorter device having a plurality of sort bins.
[0005]
However, the storage capacity of a memory such as a hard disk for storing image data is limited, and therefore the number of documents that can be stored is limited in advance.
[0006]
For example, if the memory is A4 size for 25 sheets and the document bundle is A4 size for 27 sheets, 25 sheets of documents can be stored in the memory, but 2 sheets of documents cannot be stored. End up.
[0007]
In addition, in a conventional image forming apparatus having an electronic sort function, when memory full (memory becomes full) occurs during electronic sort, the display means notifies the occurrence of memory full. Alternatively, it is configured to select whether or not to continuously execute a job corresponding to the amount stored in the memory when the memory is full.
[0008]
[Problems to be solved by the invention]
However, in the above-described prior art, when a memory full that fills up the storage capacity occurs, image formation that the user does not want (for example, copying only one side even though double-sided copying is desired) There was a risk that it would be performed.
[0009]
The present invention has been made in view of the above-described problems of the prior art, and in order to prevent image formation that is not desired by the user, memory full occurs during electronic sorting. Another object of the present invention is to provide an image forming apparatus that can easily notify the user of the number of invalid documents when the memory is full.
[0010]
[Means for Solving the Problems]
According to the present invention, there is provided a setting unit for setting image forming conditions of a document and a memory, a storage unit for storing the input document image in the memory, and the storage unit. Scanned original image On paper An image forming unit for performing image formation; Display information about image formation A display unit, When forming a predetermined number of document images on each sheet according to the setting of the setting unit, the display unit fills at least one of the predetermined number of document images to be formed on one sheet because the memory of the storage unit is full. When a part of the original image could not be stored in the storage unit, the number of original images that could be stored corresponding to each sheet was displayed as the effective number of stored originals, and the original that could not be stored The predetermined number of document images including the number of images is displayed as the invalid storage number. An image forming apparatus is provided.
[0011]
Here, the setting unit is for setting the image forming conditions of the manuscript-conditions such as selection of double-sided copy, sort copy, group copy, etc. and the number of copies, enlargement / reduction copy selection, and their magnification. For example, an operation panel unit including an LCD and operation keys is used.
[0012]
The storage unit has a memory such as a compression memory or a page memory in a hard disk, for example, and stores a document image input from the scanner unit in the memory.
[0013]
The image forming unit includes an image forming unit including, for example, a photosensitive drum, a charger, an image writing unit, a developing device, a transfer unit, and a cleaner. The image forming unit reads an arbitrary document image from the memory of the storage unit. Create an image with
[0014]
The display unit is connected to the storage unit and shares the LCD with the operation panel unit, for example. Then, when the memory of the storage unit is full, the number of document images that cannot be stored in the storage unit is displayed on the LCD, for example, as the invalid storage number. This display is performed according to the setting by the setting unit, that is, corresponding to the image forming conditions set in advance by the user.
[0015]
Since the image forming apparatus according to the present invention includes the setting unit, the storage unit, the image forming unit, and the display unit as described above, the invalid number of stored images corresponds to the image forming conditions set in advance by the user. -The number of original images that cannot be stored in the storage unit-can be displayed on the display unit. Therefore, even if a memory full occurs during electronic sorting, the memory full state is displayed to the user from the image forming conditions. The cause of the can be easily notified.
[0016]
Image forming apparatus according to the present invention Display part Is When the memory of the storage unit is full and at least a part of a predetermined number of document images to be formed on one sheet cannot be stored in the storage unit, storage is performed so as to correspond to each sheet. The number of original images that could be stored is displayed as the effective number of stored images, and the predetermined number of original images including the number of original images that could not be stored is used as the invalid storage number. It is configured to display.
[0017]
In the image forming apparatus configured as described above, when the memory of the storage unit is full, according to the setting by the setting unit, Effective number of stored images-Number of original images that could be stored in the storage-along with invalid number of stored images-Number of original images that did not satisfy the image forming conditions of the original by the above settings- Can be displayed on the display. Even if memory full occurs during electronic sorting, it is possible to easily notify the invalid number of stored documents that do not satisfy the image forming conditions, Even when the user does not count the total number of documents before image formation, the user can easily know the number of document images that can be stored in the storage unit and the number of document images that cannot be stored in the storage unit. it can.
[0018]
An image forming apparatus according to the present invention For example When the setting unit is set to perform image formation on the front and back sides of the paper, either one or both of the front and back original images could not be stored in the storage unit And the display is ,Memory It is configured to display the number of front and back two original images including the front or back, which could not be performed, as the memory invalid number Have .
[0019]
In the image forming apparatus configured as described above, when the memory of the storage unit is full, the display unit displays the number of front and back two original images including the front or back that could not be stored. Since it is displayed as an invalid memory number, the user can record either the front document image cannot be stored, the back document image cannot be stored, or the front and back document images cannot be stored. It becomes possible to grasp and appropriate measures can be taken thereafter.
[0020]
An image forming apparatus according to the present invention For example When the setting unit is set to form a plurality of pages of original images on the same sheet in a collective manner, at least one of the plurality of pages of original images is stored in the storage unit. When the display fails, the display The above The number of all original images in the plurality of pages including at least one page is displayed as the invalid storage number. Have .
[0021]
In the image forming apparatus configured as described above, when the memory of the storage unit is full, the display unit includes all of the plurality of pages including the at least one page that could not be stored. Since the number of original images is displayed as the invalid storage number, the user can grasp both when a part of the plurality of pages to be imaged cannot be stored and when all the pages cannot be stored. Can then take appropriate measures.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. The present invention is not limited to this.
[0023]
As shown in FIGS. 1 and 2, in the digital copying machine 100 having an electronic sort function, which is an image forming apparatus according to an embodiment of the present invention, an operation procedure at the time of single-sided original formation and at the time of double-sided original formation The operation procedure will be described separately.
[0024]
[During single-sided image formation]
A document table 1 made of a transparent glass body is arranged on the upper surface of the copying machine main body, and a scanner unit 2 is arranged from the upper side to the lower side of the document table 1 inside the copying machine main body. The scanner unit 2 includes a double-sided document conveying unit 201 and a document reading unit 202.
[0025]
The document reading unit 202 includes an exposure lamp 3, mirrors 4 to 6, a lens 7, and a photoelectric conversion element 8 (hereinafter referred to as “CCD”), and the exposure lamp 3 and the mirrors 4 to 6 are horizontally arranged below the document table 1. By reciprocating, the original placed on the upper surface of the original table 1 is exposed and scanned by the light emitted from the exposure lamp 3.
[0026]
Light reflected by the exposure lamp 3 on the original image surface is imaged on the light receiving surface of the CCD 8 via the mirrors 4 to 6 and the lens 7. The CCD 8 outputs a signal corresponding to the amount of light received on the light receiving surface. The output signal of the CCD 8 is converted into digital data, subjected to predetermined processing in an image processing unit (not shown), and output as image data.
[0027]
A photosensitive drum 22 is rotatably supported in the direction of arrow A at the central portion inside the copying machine main body. Around the photosensitive drum 22, a charger 18, an image writing unit 16, a developing device 23, a transfer device 19 and a cleaner 17 are arranged. The photosensitive drum 22 to the cleaner 17 constitute an image forming unit (image forming unit) 203.
[0028]
A plurality of paper feed cassettes 25 containing paper P are mounted at the bottom of the copying machine main body. Further, a sheet conveyance path from the sheet feeding cassette 25 to the sheet discharge tray 24 through the image forming unit 203 is formed inside the copying machine main body. A paper feed roller 21, a transport roller A 14, a registration roller 20, a fixing roller 13, and a paper discharge roller 9 are disposed in the paper transport path.
[0029]
At the time of image formation, after the charger 18 uniformly applies a single polarity charge to the surface of the photosensitive drum 22 rotating in the direction of arrow A, the image writing unit 16 outputs the image output from the image processing unit. The image light modulated based on the data is irradiated, and an electrostatic latent image is created on the surface of the photosensitive drum 22 by a photoconductive action.
[0030]
The developing device 23 supplies a developer to the surface of the photosensitive drum 22 and visualizes the electrostatic latent image into a developer image. Prior to the rotation direction of the photosensitive drum 22, the paper P in the paper cassette 25 is fed into the paper transport path one by one by the rotation of the paper feed roller 21 (the fed paper P is The sheet P is conveyed to the registration roller 20 by the conveyance roller A14.) The paper P is stopped in a state where the front end portion is in contact with the registration roller 20.
[0031]
The registration roller 20 starts rotating between the photosensitive drum 22 and the transfer device 19 at a timing when the front end portion of the sheet P faces the front end of the developer image carried on the surface of the photosensitive drum 22. P is guided to the image forming unit 203.
[0032]
The transfer unit 19 transfers the developer image carried on the photosensitive drum 22 onto the surface of the paper P. The cleaner 17 removes the toner remaining on the surface of the photosensitive drum 22. The sheet P on which the developer image has been transferred is heated and pressurized while passing through the fixing roller 13, and the developer image is melted and fixed to the first side (one side) of the sheet P. The paper P with the developer image fixed on the first surface is discharged to the paper discharge tray 24 by the rotation of the paper discharge roller 9, thereby providing the user with a printed matter with an image formed on one side. The transfer unit 19, the cleaner 17, and the fixing roller 13 may be referred to as a printing unit 207 illustrated in FIG.
[0033]
[During double-sided image formation]
At the time of double-sided image formation, after passing through the fixing roller 13, the paper P having the developer image fixed on the first surface temporarily stops with the rear end of the paper P being nipped by the paper discharge roller 9. The timing at which the paper P is temporarily stopped is set based on the timing at which the paper discharge detection switch 10 detects the trailing edge of the paper P.
[0034]
Thereafter, the switching claw 11 is moved downward so as to guide the paper P to the reverse path. Then, the paper P is discharged in a switchback shape by reverse rotation of the paper discharge roller 9 in order to form an image on the second surface (back surface) of the paper P with the rear edge of the paper P as the front edge. Guided from paper path to reversal path.
[0035]
The sheet P is transported by the transport roller B15 provided in the reverse path, and then transported by the registration roller 20 provided in the transport path, and is stopped in a state where the front end portion is in contact with the registration roller 20.
[0036]
The registration roller 20 starts to rotate between the photosensitive drum 22 and the transfer device 19 at a timing when the front end portion of the sheet P faces the front end of the developer image carried on the surface of the photosensitive drum 22. P is guided to the image forming unit 203.
[0037]
The transfer unit 19 transfers the developer image carried on the photosensitive drum 22 to the second surface of the paper P. The cleaner 17 removes the toner remaining on the surface of the photosensitive drum 22. The paper P to which the developer image has been transferred is heated and pressurized while passing through the fixing roller 13, and the developer image is melted and fixed to the second surface of the paper P.
[0038]
The sheet P having the developer image fixed on the second surface is sent to the sheet discharge roller 9 with the switching claw 11 moved upward, and is discharged to the sheet discharge tray 24 by the rotation of the sheet discharge roller 9. Then, the user is provided with a printed matter on which images are formed on both sides. The transfer device 19, the cleaner 17, and the fixing roller 13 may be referred to as a printing unit 207 shown in FIG.
[0039]
If the user intentionally uses the manual feed tray 12, the paper placed on the manual feed tray 12 is fed by the manual feed roller 26, and the above-described single-sided or double-sided printing process is performed.
[0040]
Next, the configuration of the document moving method will be described below.
[0041]
The document moving document reading unit 202 according to the present invention is configured such that a document is placed on a document tray one by one by a document feeding unit constituted by a document feeding pickup roller and a separating plate. Transport to.
[0042]
After the transported document is confirmed by the document input sensor, the transported document is temporarily stopped by the PS roller arranged to adjust the leading edge of the document and the image reading timing, and is transported again in a timely manner. The Then, when passing through the document reading section (SPF glass, document pressing plate), the document is irradiated by the exposure light source, and the image information of the document is read by the CCD via the reflecting mirror and the imaging lens, not shown. Image processing is performed by the control unit.
[0043]
The document read in this way passes through a discharge roller that can be rotated reversibly through a conveyance roller, and positions where the intermediate tray swing plate is disposed (home position 1 and home position 2). Thus, the advancing direction of the document is determined and conveyed to the document discharge intermediate tray or the document discharge tray.
[0044]
The copying machine 100 is provided with an operation panel unit 204 as shown in FIG. As shown in FIGS. 3 and 4, the operation panel unit 204 includes an LCD 205, LEDs, and a number of various operation keys 206.
[0045]
The copier 100 is provided with a storage unit 208 as shown in FIG. The storage unit 208 includes a memory such as a compression memory 209 or a page memory 210 in a hard disk, and stores a document image input from the scanner unit 2 in the memory.
[0046]
FIG. 5 shows a flow of image data from the scanner unit 2 through the storage unit 208 to the printing unit 207 in the copying machine 100.
[0047]
The copying machine 100 has a duplex copy mode, an Xin1 copy mode, a sort copy mode, and a group copy mode. The operation of the copying machine 100 will be described below for each of these modes.
[0048]
[Duplex copy mode]
As shown in FIG. 6, in the double-sided copy mode, confirm that the LCD 205 displays “Can copy”, Copy density “Auto”, Copy magnification “100%”, and Copy size “A4”. After the original to be copied is set, the “start” key is input. Then, reading of the original document into the storage unit 208 starts, and a message “Reading” appears on the display screen.
[0049]
As the reading of the document proceeds, the control unit determines whether “memory full” has occurred. When it is determined that the memory is not full, the copy operation is started. At this time, “Copying” appears on the display screen. When the predetermined copy is finished, a message “Ready to copy” appears on the display screen.
[0050]
On the other hand, when it is determined that the memory is full, the number of document images that cannot be stored in the storage unit 208 is displayed as the invalid storage number as shown in FIG. That is, the display screen displays “Memory is full. Documents are invalid *” and “[Start]: Start copy, [CA]: Copy stop” appears.
[0051]
This will be described in detail with reference to FIG. That is, it is assumed that memory full occurs during reading of the fourth original when copying four single-sided originals on paper. At this time, a message “Memory is full. Two documents are invalid.” Appears on the display screen instead of “Memory is full. One document is invalid.”
[0052]
This is because, in the case of duplex copying, the paper is copied in the order of the back side of the sheet to the front side in order to eject the paper face down. The second original can be copied to the front of the first page, and the third original can be copied to the back of the second page, but the fourth original is two pages. This means that the desired double-sided copy cannot be made on the second page of the paper because it cannot be copied to the front of the second paper.
[0053]
When such a display appears, if the “start” key is input, the first document and the second document are copied on both sides of the front and back of the first page. If you want to make a double-sided copy of the third and fourth originals on the front and back of the second page, perform the following double-sided copy operation on the third and fourth originals. That's fine. On the other hand, when the “CA” key is input, all the double-sided copying is stopped (end of job).
[0054]
[Xin1 copy mode] (Example: 4in1 copy mode)
As shown in FIG. 9, when four originals are copied on one side of one page of paper, the function key is input after the originals are set, and the “4 in 1” copy mode is selected. After confirming the display screen, the “start” key is input. Then, reading of the original document into the storage unit 208 starts, and a message “Reading” appears on the display screen.
[0055]
As the reading of the document proceeds, the control unit determines whether “memory full” has occurred. When it is determined that the memory is not full, the copy operation is started. At this time, “Copying” appears on the display screen. When the predetermined copy is finished, a message “Ready to copy” appears on the display screen.
[0056]
On the other hand, when it is determined that the memory is full, the number of document images that cannot be stored in the storage unit 208 is displayed as the invalid storage number as shown in FIG. That is, the display screen displays “Memory is full. Documents are invalid *” and “[Start]: Start copy, [CA]: Copy stop” appears.
[0057]
At this time, if the “CA” key is input, as shown in FIG. 11, it becomes impossible to output even one sheet due to memory over, and all copying is stopped. Then, the message “The job is canceled because the memory is full” appears on the display screen.
[0058]
This will be described in detail with reference to FIG. In other words, it is assumed that a memory full occurred during reading of the eighth original when four single-sided originals of eight sheets are copied on a single sheet per page. At this time, the display screen displays “Memory is full. One original is invalid” instead of “Memory is full. Four originals are invalid”.
[0059]
This is because the first to fourth originals can be copied to the first page in a collective form, and the fifth to seventh originals can be copied to the second page in a collective form. This means that the desired original 4in1 copy cannot be made on the second page paper because the eighth original document cannot be copied onto the second page paper.
[0060]
When such a display appears, if the “start” key is input, the first to fourth originals are copied to the first page of paper in a collective form. Then, when it is desired to copy the fifth to eighth originals on the second page of paper in a collective manner, the following 4-in-1 copy operation may be performed on these originals. On the other hand, if the “CA” key is entered, all of the 4-in-1 copies are canceled (end of job).
[0061]
As shown in FIG. 13, if it is assumed that a memory full occurs during reading of the fourth original when making a 4-in-1 copy of eight single-sided originals, it becomes impossible to output even one sheet due to memory over. Copying is canceled. Then, the message “The job is canceled because the memory is full” appears on the display screen.
[0062]
Further, as shown in FIG. 14, assuming that a memory full occurs during reading of the fifth document when making a 4-in-1 copy of eight single-sided documents, the display screen displays “Memory is full. “One card is invalid” appears.
[0063]
When such a display appears, if the “start” key is input, the first to fourth originals are copied to the first page of paper in a collective form. Then, when it is desired to copy the fifth to eighth originals on the second page of paper in a collective manner, the following 4-in-1 copy operation may be performed on these originals. On the other hand, if the “CA” key is entered, all of the 4-in-1 copies are canceled (end of job).
[0064]
[Sort copy mode]
As shown in FIG. 15, when performing the sort copy, the original is set and the “sort” key is input, the sort number is set, and then the “start” key is input. Then, the “original reading” step is performed, and the first copy operation is started.
[0065]
Then, the control unit determines whether or not “memory full” has occurred. When it is determined that the memory full has not occurred, the control unit determines whether or not the reading operation up to the last page is to be terminated. Then, when it is determined that the process is finished, the second copy operation is started. At this time, “Copying” appears on the display screen. When the predetermined copy is finished, a message “Ready to copy” appears on the display screen. On the other hand, if it is determined that the process is not completed, the process returns to the “original reading” step.
[0066]
In contrast, when it is determined that the memory is full, the number of document images that cannot be stored in the storage unit 208 is displayed as the invalid storage number as shown in FIG. That is, the display screen displays “Memory is full. Documents are invalid *” and “[Start]: Start copy, [CA]: Copy stop” appears.
[0067]
Such sort copy mode will be described with reference to an example in which two copies of three originals are sorted and copied as shown in FIG.
[0068]
When memory full occurs during reading of the third original, only one copy of the three originals can be output by the page memory (buffer memory) and printed out. On the display screen, “Memory is full. One document is invalid” appears, and “[Start]: Copy start, [CA]: Copy stop” appears.
[0069]
When such a display appears, if the “start” key is input, the first and second originals are printed out as the second copy. The third document is not printed out. On the other hand, when the “CA” key is entered, the second copy is canceled (end of job).
[0070]
In the image forming apparatus according to the first aspect of the present invention, the image forming apparatus includes a setting unit for setting image forming conditions of a document and a memory, and stores an input document image in the memory. Read the document image stored in the storage unit and the storage unit On paper An image forming unit for performing image formation; Display information about image formation A display unit, When forming a predetermined number of document images on each sheet according to the setting of the setting unit, the display unit fills at least one of the predetermined number of document images to be formed on one sheet because the memory of the storage unit is full. When a part of the original image could not be stored in the storage unit, the number of original images that could be stored corresponding to each sheet was displayed as the effective number of stored originals, and the original that could not be stored The predetermined number of document images including the number of images is displayed as the invalid storage number. It is characterized by that.
As a result, the number of invalid stored images corresponding to the image forming conditions set in advance by the user- The set image formation conditions were not met The number of original images that cannot be stored in the storage unit can be displayed on the display unit, so even if memory full occurs during electronic sorting, Does not meet the image forming conditions It is possible to easily notify the invalid number of stored originals.
[0071]
further When the memory of the storage unit is full, the display unit displays the effective storage number-the number of original images that can be stored in the storage unit-together with the invalid storage number, according to the setting by the setting unit Therefore, even when the user does not count the total number of documents before image formation, the number of document images that can be stored in the storage unit and the number of document images that cannot be stored in the storage unit can be easily calculated. Can know.
[0072]
In the image forming apparatus according to claim 2 of the present invention, when the setting unit is configured to perform image formation on the front and back sides of the paper, any one of the front and back original images When one or both cannot be stored in the storage unit, the display unit ,Memory The number of document images of two front and back sides including the front or back which could not be displayed is displayed as the invalid storage number.
Therefore, when the memory of the storage unit is full, the display unit displays the number of two original images including the front and back sides that could not be stored as the invalid storage number. It is possible to grasp both when the original document image could not be stored, when the back side original image could not be stored, and when the front and back side original images could not be stored. Measures can be taken.
[0073]
In the image forming apparatus according to claim 3 of the present invention, when the setting unit is configured to form a plurality of document images on the same sheet in a grouped manner, the plurality of pages When the document image of at least one of the pages cannot be stored in the storage unit, the display unit The above The number of all document images in the plurality of pages including at least one page is displayed as the invalid storage number.
Accordingly, when the memory of the storage unit is full, the display unit displays the number of all original images in the plurality of pages including the at least one page that could not be stored as the invalid storage number. The user can grasp both the case where a part of the plurality of pages to be imaged cannot be stored and the case where all the pages cannot be stored, and take appropriate countermeasures thereafter. Can be taken.
[Brief description of the drawings]
FIG. 1 is a front view of an image forming apparatus according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram of an internal configuration of the image forming apparatus in FIG. 1;
FIG. 3 is a block diagram illustrating a part of the image forming apparatus in FIG. 1;
FIG. 4 is a plan view of an operation panel unit in the image forming apparatus of FIG.
FIG. 5 is a block diagram showing a flow of image data in the image forming apparatus of FIG. 1;
6 is a part of a flowchart when performing double-sided copying in the image forming apparatus of FIG. 1;
FIG. 7 is a part of a flowchart when performing double-sided copying in the image forming apparatus of FIG. 1;
FIG. 8 is a part of a flowchart when duplex copying is performed in the image forming apparatus of FIG.
FIG. 9 is a part of a flowchart when Xin1 copy is performed in the image forming apparatus of FIG. 1;
FIG. 10 is a part of a flowchart when performing Xin1 copy in the image forming apparatus of FIG. 1;
FIG. 11 is a part of a flowchart when Xin1 copy is performed in the image forming apparatus of FIG. 1;
FIG. 12 is a part of a flowchart when performing 4-in-1 copy in the image forming apparatus of FIG. 1;
13 is a part of a flowchart when performing 4-in-1 copy in the image forming apparatus of FIG. 1;
FIG. 14 is a part of a flowchart when performing 4 in 1 copy in the image forming apparatus of FIG. 1;
FIG. 15 is a part of a flowchart when sort copying is performed in the image forming apparatus of FIG. 1;
FIG. 16 is a part of a flowchart when sort copying is performed in the image forming apparatus of FIG. 1;
FIG. 17 is a part of a flowchart when sort copying is performed in the image forming apparatus of FIG. 1;
[Explanation of symbols]
1 .. Document platen
2 ・ ・ ・ ・ ・ ・ Scanner
3. Exposure lamp
4-6 ... Mirror
7 ・ ・ ・ ・ ・ ・ Lens
8 .... Photoelectric conversion device (CCD)
9 .... Eject roller
10 .... Discharge detection switch
11 ・ ・ ・ ・ ・ ・ Switching claw
12 .. Bypass tray
13. Fixing roller
14 .... Conveying roller A
15 .. Conveyor roller B
16 .... Image writing unit
17. Cleaner
18 .... Charger
19 ... Transfer
20 .... Registration roller
21... Paper feed roller
22 .... Photosensitive drum
23... Development device
24 ····· Output tray
25 ····· Paper cassette
26 ・ ・ ・ ・ ・ ・ Manual feed roller
P ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Paper

Claims (3)

A setting section for setting image forming conditions of the document;
A storage unit for storing an input document image in the memory;
An image forming unit for reading a document image stored in the storage unit and forming an image on a sheet ;
A display unit for displaying information relating to image formation ,
When a predetermined number of document images are formed on each sheet according to the setting of the setting unit, the display unit fills at least one of the predetermined number of document images to be formed on one sheet because the memory of the storage unit is full. When a part of the original image could not be stored in the storage unit, the number of original images that could be stored corresponding to each sheet was displayed as the effective number of stored originals, and the original that could not be stored An image forming apparatus characterized in that the predetermined number of document images including the number of images is displayed as a storage invalid number . When the setting unit is set to form an image on the front and back of the paper, and either or both of the front and back original images cannot be stored in the storage unit , the display unit, the image forming apparatus according to claim 1, characterized in that to display the number of the front and back two document images including a table or the back could not be stored as a storage invalid number. When the setting unit is set to form a plurality of pages of original images on the same sheet in a collective manner, at least one of the plurality of pages of original images may be stored in the storage unit. 2. The image forming apparatus according to claim 1 , wherein when it is not possible, the display unit displays the number of all document images in the plurality of pages including the at least one page as the invalid storage number.

Images