JPH1013588A - Image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely confirm a read error and to avoid waste of recording paper by stopping image forming when a read error of image information is detected in the case of reading stored image information and displaying a page number of a corresponding original. SOLUTION: A primary storage unit 121 is made up of a DRAM capable of high speed access and a secondary storage unit 122 is made up of a large capacity hard disk unit or the like. Then the read/write of image information from/to the secondary storage unit 122 is conducted in compliance with the SCSI standard and when a secondary compression/expansion unit 144 reads the image information from the secondary storage unit 122, the unit 144 detects whether or not the image information is correctly read to correct a detected error. When the error information amount exceeds an amount correctable by an error correction code, it is discriminated to be a read error, the transfer of the image information by a CPU is stopped and read error information including a page number corresponding to the operation section is displayed.

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, and more particularly, to a so-called electronic sort function for storing image information of a plurality of originals, reading out the stored image information in an arbitrary order, and forming the read image information on recording paper. The present invention relates to an image forming apparatus.

[0002]

2. Description of the Related Art Conventionally, image information of one copy of a plurality of originals is read for each sheet, and the read image information is repeatedly formed on a plurality of recording sheets, and the recording sheets are sorted according to the number of copies. For example, an image forming apparatus such as a copying machine that outputs the image data to a sorter is known.

[0003] This type of image forming apparatus is a so-called mechanical sorter that sorts recording paper by moving each bin of a sorter to a discharge port of recording paper. Therefore, the number of sorting units is limited by the number of bins. Further, since the sorter is installed so as to be placed sideways on the apparatus main body, the apparatus size has been increased.

On the other hand, in recent years, an image forming apparatus having a so-called electronic sort function has been developed which stores image information of all pages of a document in an image memory, reads out the image information from the image memory in an arbitrary order, and records and outputs the image information. Was done.

[0005] Examples of this type of image forming apparatus include those described in JP-A-62-45268 and JP-A-62-45268.
247670, JP-A-62-2495
No. 62, and Japanese Unexamined Patent Publication No. 63-23472 are reported.

An image processing apparatus described in Japanese Patent Application Laid-Open No. 62-45268 discloses an image processing apparatus which converts image signals of a document for all pages read by an image reading unit 3 and stored in an image storage unit 4 and an auxiliary storage unit 5. By reading out based on the designation information designated by the operator in advance and recording and outputting by the image recording unit 6, the recording paper can be recorded in an arbitrary order without using a sorter or the like, and collation can be performed.

The document processing apparatus described in Japanese Patent Application Laid-Open No. 62-247670 operates an operation panel 301 to sequentially read image information of an original set on an original platen 302 and store it in a memory. , And by repeatedly reading out the image information stored in the memory, it is possible to obtain a copy in which a plurality of pages are arranged without attaching a sorter.

In the copy sorting method described in Japanese Patent Application Laid-Open No. 62-249562, image information of a document read by the scanner 1 is stored in the storage device 10 for each document,
The image information is read out by repeating the number of copies in accordance with the output order requested from the storage device 10 by the U9, and reproduced and output by the printer 8, thereby simplifying the mechanism of the device and enabling sorting regardless of the number of copies. It was done.

Further, in the image processing apparatus described in Japanese Patent Application Laid-Open No. 63-23472, an IRS key for selecting arbitrary image information is provided on the operation panel 301, and the image information stored in the memory is selectively operated by the IRS key. By reading and performing a desired number of copies, the image information of the original to be copied is easily selected from a large number of pieces of image information and output.

As described above, the image forming apparatus having the electronic sort function stores the image information of all pages of the original in the image memory, reads out the image information from the image memory in an arbitrary order, and records and outputs the image information. As described above, the number of copies is not limited, and a large number of copies can be recorded and output by a series of operations, and the device can be prevented from becoming large.

[0011]

However, in a conventional image forming apparatus having an electronic sorting function, when a read error occurs when reading image information from a storage device in which the image information is stored, an error occurs. The recorded image is output as it is, and the recording paper is wasted.

Further, there is a problem that it takes time and effort to confirm whether a correct image is formed on the recording paper.

Therefore, the present invention provides means for detecting an image information read error when reading image information stored in a storage device, and stops an image forming operation when an image information read error is detected. In addition, an object of the present invention is to provide an image forming apparatus capable of easily and surely confirming a read error by displaying a page number of a corresponding document and eliminating waste of recording paper.

Further, according to the present invention, when a read error of image information is detected, the image information can be smoothly inputted by re-inputting the relevant image information and continuing the image forming operation. It is intended to provide a device.

[0015]

In order to achieve the above object, according to the first aspect of the present invention, there is provided an input unit for inputting image information of a plurality of originals, and an input unit for inputting image information of all pages input by the input unit. Storage means for storing image information, reading means for reading the image information stored in the storage means in any order in page units, and output for forming and outputting the image information read by the reading means on recording paper A read error detecting means for detecting a read error of the reading means, and a control for stopping an output operation of the output means when the read error is detected by the read error detecting means. Means for displaying read error information indicating that the read error has been detected when the read error is detected by the read error detecting means. .

According to the first aspect of the present invention, when the read error is detected by the read error detecting means, the output operation of the output means is stopped by the control means, and the read error information is displayed by the display means. .

Therefore, it is possible to easily and surely confirm a reading error and to eliminate waste of recording paper.

According to a second aspect of the present invention, in the first aspect, the read error information includes a page number corresponding to the image information detected by the read error detecting means.

According to the second aspect of the present invention, the read error information is configured to include the page number corresponding to the image information detected by the read error detecting means. Can be identified.

The invention according to claim 3 is the invention according to claim 1 or 2
In the invention described in the above, an instruction means for instructing a start of an input operation of the input means is provided, and when the output operation of the output means is stopped by the control means, one document is set on the input means, When an operation start of the input unit is instructed by the instruction unit, the input unit inputs image information of the set original, and the storage unit reads the image information of the original input by the input unit. The image information in which a reading error has been detected by the error detecting means is replaced and stored.The reading means reads the remaining unread image information from the replaced image information by the storing means. The remaining image information read by the reading means is formed on recording paper and output.

According to the third aspect of the present invention, when the output operation of the output unit is stopped by the control unit, one document is set on the input unit, and the operation of the input unit is started by the instruction unit. When instructed, the image information of the document set by the input means is input, and the image information of the document input by the input means by the storage means is replaced with the image information of the read error detected by the read error detection means. The remaining image information, which has been replaced and stored, is read from the image information replaced by the storage means by the reading means, and the remaining image information read by the reading means by the output means is recorded on a recording paper. And is output.

For this reason, when a reading error occurs, the image information of the corresponding document can be re-input and the image forming operation can be continued. The trouble of replacing can be eliminated. Therefore, a smooth image forming operation can be performed.

The invention described in claim 4 is the invention according to claim 1 or 2
In the invention described in the above, there is provided a document table on which the plurality of documents are set, and the document set on the document table is carried into the input means one by one, and the image information is read by the input means. Document feeding means for carrying out the document from the input means, and instructing means for instructing the start of the operation of the document feeding means, wherein when the output operation of the output means is stopped by the control means, A document is set on a document table of the document conveying means, and when an operation start of the document conveying means is instructed by the instruction means, the document conveying means conveys the document set on the document table to the input means, The input means inputs image information of the document conveyed by the document conveying means, and the storage means reads the image information of the document input by the input means by a read error detecting means. Is replaced with the detected image information and stored, the reading means reads the remaining unread image information from the image information replaced by the storage means, and the output means outputs the remaining image information read by the reading means. Is formed on recording paper and output.

According to the present invention, when the output operation of the output unit is stopped by the control unit, one original is set on the original platen of the original transportation unit, and the original transportation is performed by the instruction unit. When the operation start of the means is instructed, the original set on the original platen by the original transporting means is transported to the input means, and image information of the original transported by the original transporting means is input by the input means, The image information of the document input by the input means is stored in the storage means by replacing the image information with the read error detected by the read error detection means, and the image information replaced by the storage means by the read means The remaining image information which has not been read is read out from the memory, and the remaining image information read by the reading means is formed on recording paper by the output means and output. That.

For this reason, when a reading error occurs, the original can be set on the original platen, the image information of the original can be re-input, and the image forming operation can be continued. It is possible to eliminate the trouble of replacing the recording paper with the recording paper having the correct image. Therefore, a smooth image forming operation can be performed.

The invention according to claim 5 is the invention according to claim 1 or 2
In the invention described in the above, there is provided a document table on which the plurality of documents are set, and the document set on the document table is carried into the input means one by one, and the image information is read by the input means. Document feeding means for carrying out from the input means, and instructing means for giving an instruction to start operation of the document feeding means, wherein when the output operation of the output means is stopped by the control means, When a document is set on the document table again and the operation of the document conveying means is instructed by the instruction means, the document conveying means conveys the document set again on the document table to the input means, and Means for inputting image information of a page corresponding to image information in which a reading error has been detected by the reading error detecting means among the originals conveyed by the original conveying means; and The image information of the original input by the input means is replaced with the image information in which the read error is detected by the read error detecting means and stored, and the read means stores the unread remaining from the image information replaced by the storage means. Wherein the output means forms the remaining image information read by the reading means on recording paper and outputs it.

According to the fifth aspect of the present invention, when the output operation of the output unit is stopped by the control unit, the plurality of originals are set on the original platen again, and the operation of the original conveying unit is performed by the instruction unit. When the start is instructed, the original set again on the original platen by the original transporting unit is transported to the input unit, and the reading error detecting unit reads out of the originals transported by the original transporting unit by the input unit. The image information of the page corresponding to the image information in which the error is detected is input, and the image information of the document input by the input means is replaced with the image information in which the reading error is detected by the reading error detecting means by the storage means. The unread remaining image information is read from the image information replaced by the storage means by the reading means, and the output means The remaining image information read by said read out means by is output are formed on the recording paper.

Therefore, when a reading error occurs, all the originals are reset on the original conveying means, so that the image information of the page corresponding to the reading error can be re-input and the image forming operation can be continued. Therefore, it is possible to eliminate the trouble of searching for the original corresponding to the reading error one by one. Therefore, a smooth image forming operation can be performed. This is particularly effective when the number of documents is small.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a diagram showing the overall configuration of a copying machine to which an image forming apparatus according to an embodiment of the present invention is applied.

As shown in FIG. 1, the copying machine has an automatic document feeder provided so as to be openable and closable with respect to the copying machine body so as to cover the copying machine body 1 and a contact glass 11 provided on the upper surface of the copying machine. 1 and a finisher unit 3 provided adjacent to the left side in FIG.

The copying machine body 1 includes a reading unit 10, a writing unit 20, a transfer unit 30, and a paper feeding unit 4.
0 is provided.

The reading unit 10 includes the contact glass 1
1 for reading an image of a document set at a predetermined reading position on the document 1 and converting the image into an image signal. The exposure lamp 12 irradiates light through a contact glass 11 and reflects the reflected light to a mirror 13, a mirror 14, 15, the reflected light guided is collected by the condenser lens 16, and the reflected light collected by the CCD image sensor 17 is converted into an electric signal corresponding to the intensity of the light. It has become.

The exposure lamp 12 and the mirror 13
Is provided on a first carriage (not shown), and the mirror 14 and the mirror 15 are provided on a second carriage (not shown) so as to maintain a substantially constant optical path length when reading an image on a document. The first carriage and the second carriage are mechanically scanned at a relative speed of 2: 1. The first and second carriages are moved in the main scanning direction by a scanner drive motor (not shown).

The condenser lens 16 and the CCD image sensor 17 are provided so as to be integrally movable in the left-right direction in FIG. 1, and correspond to an enlargement / reduction magnification designated by an operation unit 70 described later. Determine its position.

Below the reading unit 10, a writing unit 20 is provided. The writing unit 20 irradiates the photosensitive drum 31 of the transfer unit 30 provided below the writing unit 20 with a laser beam to form an electrostatic latent image on the surface of the photosensitive drum 31. A unit 21, an imaging lens 22 and a mirror 23 are provided.

The laser output unit 21 has a laser light source comprising a laser diode and a polygon mirror which rotates at a high speed at a high speed by a motor. The laser light emitted from the laser light source is polarized by the polygon mirror. The light is guided to the imaging lens 22. The laser light guided to the imaging lens 22 is reflected by the mirror 23 and irradiated on the photosensitive drum 31, so that an electrostatic latent image is formed on the surface of the photosensitive drum 31.

In addition, a beam sensor (not shown) for generating a main scanning synchronization signal is provided near the laser irradiation position of the photosensitive drum 31, and based on the synchronization signal generated by the beam sensor, a beam sensor in the main scanning direction is provided. The timing of the image recording operation and the input / output control of the image signal are controlled.

A transfer unit 3 is provided below the copying machine body 1.
A paper feed unit 40 for supplying recording paper to the recording paper 0 is provided. The paper feed unit 40 feeds the recording paper stored in paper feed trays 41, 42, and 43 that store a plurality of recording papers having different sizes, respectively, into feed units 41 a, 4 a.
The recording paper is fed one by one by 2a and 43a, and the fed recording paper is transported upward by the vertical transport unit 44 so as to contact the photosensitive drum 31.

The paper feed unit 40 is provided with a paper feed tray 4
When an image is recorded and output on both sides of the recording paper by the double-sided paper supply unit 45 provided above the recording paper 5, the recording paper having the image formed on one side is temporarily stocked.

The transfer unit 30 forms a toner image from the electrostatic latent image formed on the surface of the photosensitive drum 31 by the developing unit 32 and rotates the recording paper fed by the paper feeding unit 40 by the transport belt 33. Drum 31
Is transported at the same speed as the peripheral speed of the photosensitive drum 31, and the toner image formed on the surface of the photosensitive drum 31 is transferred to a recording paper and recorded and output.

The recording paper onto which the toner image has been transferred is fixed with toner by a fixing unit 34, and the finisher unit 3 or the double-sided paper feeding unit 4 is
5 is discharged. Unloading unit 35
Is configured to switch the recording paper discharge path by the branching claw 36, and is usually positioned below and discharges the recording paper to the finisher unit 3. However, images are printed on both sides of the recording paper by the operation unit 70 described later. When the duplex mode for recording and outputting is set, the recording paper is moved upward to carry out the recording paper to the duplex paper supply unit 45.

The photosensitive drum 31, the developing unit 3
2. The transport belt 33, the fixing unit 34, and the unloading unit 35 are driven by a main motor 37 (not shown). Also, the feeding unit 41 of the paper feeding unit 40
a, 42a and 43a are connected to the main motor 3 by respective clutches 41b, 42b and 43b (not shown).
7, the drive of the main motor 37 is transmitted to the vertical transport unit 44 by an intermediate clutch 44b (not shown).

Automatic Document Feeder (ADF)
Reference numeral 2 denotes one or more documents set on a document tray 51, which are separated and fed one by one by a feeding unit 52, and the fed documents are moved to a predetermined reading position on the contact glass 11 by a transport belt 53. Convey and read unit 1
The document whose image has been read by 0 is transported by the transport belt 53 and is transported onto the cover 55 by the transport roller pair 54.

A document detection sensor 56 for detecting the presence or absence of a document on the document table 51 is provided below the document table 51. When the presence of a document is detected, the document is sequentially fed by the feeding unit 52. It is supposed to be. The feeding unit 52, the transport belt 53, and the unloading roller pair 54 are
It is driven by a transport motor 57 (not shown).

Hereinafter, an operation mode in which copying is performed using the ADF 2 is referred to as an ADF mode, and an operation mode in which an original is directly set on the contact glass 11 to perform copying is referred to as a normal mode.

The finisher unit 3 is for discharging the recording paper carried out by the carry-out unit 35 of the transfer unit 30 to the stack tray 64. The finisher unit 3 switches the discharge path by the branching claws 61 and discharges the recording paper. Normally, the recording paper is discharged through the carry-out path 62. However, when a staple mode for binding and discharging a predetermined number of recording papers is set by the operation unit 70 described later, the discharge path 63 is used. Through the staple tray 65. When recording paper for a predetermined page is carried out to the staple tray 65, the staple unit 6
The recording paper is bound by 6 and discharged to the stack tray 64.

FIG. 2 is a view showing an operation unit 70 provided on the upper surface of the copying machine main body.

As shown in FIG. 2, the operation unit 70 includes a touch panel 71, a numeric keypad 72, and a clear / stop key 7.
3, a print key 74, an initial setting key 75, and a mode clear key 76.

The touch panel 71 sets the operation mode of the copying machine and displays the status information of the copying machine. The touch panel 71 is composed of a liquid crystal panel of a dot display system, and as shown in FIG. It is designed to be highlighted in black. The two-sided mode and the staple mode described above are also set by the touch panel. Depending on the mode, the screen is switched to a screen for setting more detailed items.

The print key 74 is for instructing the start of a copying operation. In the normal mode, when the operator presses the printing key 74, the copying operation is started. Also, in the case of the ADF mode, the platen 51
Is set and the print key 74 is depressed, the original is fed by the ADF 2, and the copying operation is started.

FIG. 4 is a diagram showing the overall configuration of the control circuit of the copying machine shown in FIG.

As shown in FIG. 4, a main controller 81 for controlling the entire copying machine includes an operation unit 70 and an ADF 2
Controller 82 for controlling image processing and I for performing image processing
A PU (image data processing unit) 83 and a modem 84 for executing communication are connected. Control information is exchanged between the main controller 81 and each of the units 70, 82, 83 and 84 to perform distributed control.

The main controller 81 includes the main motor 37 and the clutches 41b, 4
2b, 43b, 44b, etc. are connected, and are driven based on control information of the main controller 81.

The ADF controller 82 is connected to a conveyance motor 57 and a document detection sensor 56, so that the detection information of the document detection sensor 56 is obtained and the conveyance motor 57 is driven.

The modem 84 is connected to a service center via a communication line, and when a failure occurs in the copying machine,
The failure information is transmitted to the service center.

FIG. 5 is a diagram showing a configuration of the main controller 81 shown in FIG. As shown in FIG. 5, the main controller 81 includes a CPU 91, a ROM 92, a RAM
The system includes a memory controller 93, a memory controller 94, an image memory 95, and an I / O port 96. The units are connected by address buses A1, A2 and data buses B1, B2.

The CPU 91 controls the entire copying machine based on the control program and control data stored in the ROM 92 and the control data stored in the RAM 93. The image memory 95 includes a memory controller 94
Is used to store image information. I / O port 9
Reference numeral 6 denotes a unit for exchanging control information with external units. Further, the CPU 91 executes writing and reading of image information to and from the image memory 95 via the memory controller 94.

FIG. 6 is a block diagram showing the configuration of the IPU shown in FIG. As shown in FIG. 6, the IPU 83
A / D converter 101, shading correction unit 102, MTF correction / γ correction unit 103, print combining unit 104, selector 105, print combining unit 1.
06, a magnification unit 107 and a print image data generation unit 108.

The analog information photoelectrically converted by the CCD image sensor 17 is converted into digital information by an A / D converter 101, shading correction is performed by a shading correction unit 102, and MTF correction and correction are performed by an MTF correction / γ correction unit 103. The gamma correction is performed, and the result is input to the selector 105 via the print synthesizing unit 104.

The selector 105 switches the input digital image information to the memory controller 94 or the print synthesizing unit 106 and outputs the same. When outputting the input image information to the writing unit 20 as it is,
The input image information is output to the print combining unit 106,
When storing the input image in the image memory 95,
The input image information is output to the memory controller 94. Further, the selector 105 inputs the image information read from the image memory 95 by the CPU 91 via the memory controller 94 and outputs the image information to the print synthesizing unit 106.

Print image data generating unit 108
Generates a character image for page printing and an arbitrary stamp image. The stamp image, for example, reads a plurality of pieces of image information such as a logo by the reading unit 10 and is registered in the image memory 95,
The image information is read out as needed, and the print synthesizing unit 10 is read out.
4 or 106.

The print synthesizing units 104 and 106 include an MTF correction / γ correction unit 103 and a selector 10 respectively.
5, the image output from the print image data generating unit 108 is combined with the image information output from the output unit 5, and output.

The image information output from the print synthesizing unit 106 is subjected to enlargement / reduction processing by the scaling unit 107 based on the scaling ratio set by the operation unit 70.
The data is output to the writing unit 20.

The IPU 83 has an external input unit (not shown), and inputs data processed by a computer, for example.

FIG. 7 is a diagram showing the configuration of the memory controller 94 and the image memory 95 shown in FIG. The memory controller 94 includes an input data selector 111, an image synthesis unit 112, a primary compression / decompression unit 11,
A third / secondary compression / decompression unit 114 and an output data selector 115 are provided. Further, the image memory 95
Primary storage unit 121 and secondary storage unit 122
It has.

The input data selector 111 is for selectively inputting image information and outputting it to the image synthesizing unit 112.

The image synthesizing unit 112 arranges two pages of images to edit one page of images, or overlays two images on one image, based on the setting information of the operation unit 70. It performs processing and the like. After the input image information is edited as necessary,
The data is output to one or both of the decompression unit 113 and the output data selector 115. The input image information may be output from the input data selector 111 or may be output from the primary compression / decompression unit 113 described below.

The primary compression / expansion unit 113 performs primary compression on the image information output from the image synthesizing unit 112 at a fixed compression rate and writes the compressed information into the primary storage unit 121 and also writes the image information into the primary storage unit 122. The read image information is read, decompressed, and output to the image synthesizing unit 112 or the output data selector 115.

The secondary compression / expansion unit 114 is made up of the primary storage unit 121 by the primary compression / expansion unit 113.
The image information stored in the secondary storage unit 122 is read out, subjected to variable-length secondary compression and written to the secondary storage unit 122, and the image information written to the secondary storage unit 122 is read out and decompressed to the primary storage unit 121. What to write.

The output data selector 115 outputs the image information output from the image synthesizing unit 112 or the primary compression / decompression unit 113 to the selector 105 of the IPU 83.

The primary storage unit 121 is composed of a DRAM which can be accessed at a high speed so as to be substantially synchronized with the transfer speed at which writing and reading of image information is required. The secondary storage unit 122 performs image synthesis and image sorting. In order to perform this, it is composed of a large-capacity hard disk or magneto-optical disk. The primary storage unit 121 has an interface that divides image information into a plurality of areas and simultaneously inputs and outputs image information with the memory controller 94.

Reading and writing of image information to and from the secondary storage unit 122 conforms to the SCSI standard.
The secondary compression / decompression unit 114 includes the secondary storage unit 12
When the image information is read from the image information 2, it is detected whether or not the image information is correctly read, and the detected error is corrected. However, if the amount of error information exceeds the amount that can be corrected by the error correction code, it is determined that a read error has occurred, the CPU 91 stops transferring image information, and the read error including the page number corresponding to the operation unit 70 is performed. It displays information.

As described above, the image memory 95 is configured to write and read image information to and from the large-capacity secondary storage unit 121 through the primary storage unit 121 for high-speed access. If the amount of image information to be processed is sufficient for the capacity of the primary storage unit 121, the image information is not written to the secondary storage unit 122.

The configuration of the image memory 95 is not limited to this, and for example, the primary storage units 121 and 2
If both of the secondary storage units 122 can perform high-speed access, data can be written and read directly to and from the secondary storage unit 122, or processing can be performed without distinction between primary storage and secondary storage. Good.

That is, the image memory 95 has only to select a storage unit in accordance with the processing speed of image information required for the copying machine, and has a configuration capable of supporting image information having different compression / decompression rates and access speeds. Good to do.

Next, the operation of accessing image information to the image memory 95 by the CPU 91 via the memory control unit 94 will be described. Here, it is assumed that there is no image reading error by the secondary compression / decompression unit 114.

As shown in FIG. 8, for example, the primary storage unit 121 has a capacity for storing images of two pages of the original, and the image information of the four pages of the original is stored in the secondary storage unit 1.
22, first, the image information of the fourth page read by the reading unit 10 is primarily compressed by the primary compression /
The data is written to the right area in the drawing of the next storage unit 121.

Next, the image information of the third page is converted to the primary compression /
The decompression unit 113 compresses and writes the compressed data in the left area of the primary storage unit 121 in FIG.
The image of the page is read from the primary storage unit 121 by the secondary compression / decompression unit 114, further secondary-compressed, and written to the secondary storage unit 122.

Thereafter, the same operation is sequentially performed, and the compressed image information for four pages is stored in the secondary storage unit 122. Since the secondary compression / expansion unit 114 is a variable-length compression system, the amount of information occupied in the secondary storage unit 122 varies depending on the image pattern of the document and the like.

As shown in FIG. 9, when the image information stored in the secondary storage unit 122 is read out from the first page in a page order and recorded and output, first, the image information of the first page is 2 by the next compression / decompression unit 114
The data is read from the next storage unit 122, secondarily expanded, and written to the first storage unit 121.

Next, the image information of the first page is converted to the primary compression /
The data is read out from the primary storage unit 121 by the decompression unit 113, is decompressed first, and the printing operation of the first page is started. At this time, the image information of the second page is stored in the secondary storage unit 122 by the secondary compression / decompression unit 114.
From the primary storage unit 12
Written to 1.

Thereafter, when a similar operation is repeated and a plurality of copies are recorded and output, the image information of the first page is read again after the fourth page. Note that the order in which images are read is
It goes without saying that it can be performed in any order.

The operation of recording and outputting a plurality of copies of the image information stored in the image memory 95 from the first page of the document will be described with reference to the flowcharts of FIGS. Here, the primary storage unit 121 is called a DRAM, and the secondary storage unit 122 is called an HDD.

First, the page number N =
1, the number of copies M is set to 1 (step S1).
Next, the image information of the Nth page is read from the HDD by the secondary compression / decompression unit 114 and written into the DRAM (step S2), and it is detected whether or not a read error has occurred (step S3).

If no read error is detected, the read image information is written to the DRAM, read to the primary compression / decompression unit 113, and recorded and output (step S4).

Next, it is determined whether or not N is the last page (step S5).
The value is incremented (step S6), and the process returns to step S2. On the other hand, if N is the last page, it is determined whether or not M is the last number of copies (step S7). If M is the last copy, the copying operation ends. On the other hand, if M is not the last part, M is incremented by 1 and N is set to 1
(Step S8), and returns to Step S2.

On the other hand, if a read error is detected in step S3, as shown in FIG. 12, a message indicating that the read error has occurred and the corresponding page number are displayed on operation unit 70 (step S9). The copying operation is stopped.

Next, the ADF is
It is detected whether or not the original is set again on the second original table 51 (step S10). Here, when the document on the document table 51 is detected and the print key 74 is pressed,
The document up to the page where the reading error is detected by the DF2 is skipped (step S11). When the page where the reading error is detected is reached, the document conveyed onto the contact glass 11 is read by the reading unit 10 and this document is read. The read image information of the document is replaced with the image information in which the read error is detected, and stored in the HDD. (Step S1
2). Next, the original is fed by the ADF 2 to the last page, and all the originals are carried out onto the cover 55, and the process returns to step S2.

On the other hand, in step S10, if the original on the original platen 51 is not detected, the original is set on the contact glass 11, and if the print key 74 is pressed,
The image of the original is read by the reading unit 10, and the read image information of the original is stored in the HDD in place of the image information in which the read error has been detected (step S1).
2) Return to step S2.

As described above, in the present embodiment, the secondary compression /
When a read error is detected by the extension unit 114, the copying operation of the copying machine is stopped by the CPU 91, and the read error information is displayed by the operation unit 70.

Therefore, it is possible to easily and surely confirm a reading error and to eliminate waste of recording paper.

Also, since the read error information is configured to include the page number corresponding to the image information detected by the secondary compression / decompression unit 114, the operator can easily specify the original of the corresponding page. Can be.

Further, when the copying operation of the copying machine is stopped by the CPU 91, one original is
When the reading unit 10 is set at the reading position 1 and the start of the operation of the reading unit 10 is instructed by the print key 74, the image information of the document set on the contact glass 11 is input by the reading unit 10 and input by the reading unit 10. The image information of the original is replaced with the image information in which the reading error is detected by the secondary compression / expansion unit 114 and stored in the secondary storage unit 122, and the remaining unread image information is read from the replaced image information. The remaining image information read out and copied is copied.

Therefore, when a reading error occurs, the image information of the corresponding document can be re-input and the image forming operation can be continued. The trouble of replacing can be eliminated. Therefore, a smooth image forming operation can be performed.

When the copying operation of the copying machine is stopped by the CPU 91, a plurality of originals are set on the original platen 51 again, and when the start of the operation of the ADF 2 is instructed by the print key 74, the ADF 2 moves the original to the original platen 51. The re-set document is conveyed to the reading unit 10, and the image information of a page corresponding to the image information for which a reading error has been detected by the secondary compression / decompression unit 114 is read out of the document conveyed by the ADF 2 by the reading unit 10. And
The image information of the document input by the reading unit 10 is stored in the secondary storage unit 122 after replacing the image information in which a reading error has been detected by the secondary compression / expansion unit 114, and the unread image information is read from the replaced image information. The remaining image information is read, and the read remaining image information is copied.

Therefore, when a reading error occurs, all the originals are reset on the ADF 2, so that the image information of the page corresponding to the reading error can be re-input and the image forming operation can be continued. It is possible to eliminate the trouble of searching for a document corresponding to the reading error one by one. Therefore, a smooth image forming operation can be performed. This is particularly effective when the number of documents is small.

In the present embodiment, when the copying operation of the copying machine is stopped by the CPU 91, when a document is set on the contact glass 11, the image information of the document is re-input, and the document is placed in the ADF2. When the document is re-set on the table 51, the document is fed idly and the image information of the document on the page corresponding to the read error is re-input, but this is not restrictive.

For example, the ADF 2 is provided with a detecting means for detecting the number of documents set on the document table 51 (for example, based on the thickness of the document). When one document is detected by the detecting means, the document is detected. The image data is conveyed to the ADF 2, and the image information is re-input. When a plurality of originals are detected by the detecting means, the original is idle-fed and the image information of the original corresponding to the read error is re-input. Well,
The image information may be input by the external input unit described above.

[0100]

According to the present invention, when a read error is detected by the read error detecting means, the output operation of the output means is stopped by the control means, and the read error information is displayed by the display means. Is displayed.

Therefore, a reading error can be easily and reliably confirmed, and waste of recording paper can be eliminated.

According to the second aspect of the present invention, since the read error information includes the page number corresponding to the image information detected by the read error detecting means, the operator can easily specify the original of the corresponding page. be able to.

According to the third aspect of the present invention, when the output operation of the output means is stopped by the control means, 1
When a document is set on the input unit and the operation of the input unit is instructed by the instruction unit, image information of the set original is input by the input unit and input by the input unit by the storage unit. The read image information of the original is replaced with the image information in which the read error is detected by the read error detecting means and stored, and the unread remaining image information is replaced with the image information replaced by the storage means by the read means. Reading, forming the remaining image information read by the reading means on the recording paper by the output means and outputting the same.

Therefore, if a read error occurs, the image information of the corresponding document can be re-input and the image forming operation can be continued. The trouble of replacing can be eliminated. Therefore, a smooth image forming operation can be performed.

According to the fourth aspect of the present invention, when the output operation of the output means is stopped by the control means, 1
When a document is set on a document table of the document conveying means, and the operation of the document conveying means is instructed by the instruction means, the document set on the document table by the document conveying means is conveyed to the input means. The input means inputs image information of the original conveyed by the original conveying means, and the storage means detects the read error of the image information of the original input by the input means by the read error detecting means. The image information is replaced and stored, the readout means reads out the remaining unread image information from the image information replaced by the storage means, and the output means reads out the remaining image information read out by the readout means. It is formed on recording paper and output.

Therefore, when a reading error occurs, the original can be set on the original platen and the image information of the original can be re-input to continue the image forming operation. It is possible to eliminate the trouble of replacing the recording paper with the recording paper having the correct image. Therefore, a smooth image forming operation can be performed.

According to the fifth aspect of the present invention, when the output operation of the output unit is stopped by the control unit, the plurality of originals are set on the original platen again, and the original conveying unit is set by the instruction unit. When the start of the operation of the original is instructed, the original set on the original platen by the original transporting means is transported to the input means, and the reading error detecting means of the original transported by the original transporting means by the input means is read out. The image information of the page corresponding to the image information for which the read error has been detected is input by the CPU, and the image information of the document input by the input means is stored by the storage means. And reads out the remaining unread image information from the image information replaced by the storage means by the reading means. The remaining image information and outputs the formed recording paper read by said read out means I.

Therefore, when a reading error occurs, all the originals are reset on the original conveying means, whereby the image information of the page corresponding to the reading error can be re-input, and the image forming operation can be continued. Therefore, it is possible to eliminate the trouble of searching for the original corresponding to the reading error one by one. Therefore, a smooth image forming operation can be performed. This is particularly effective when the number of documents is small.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of a copying machine to which an image forming apparatus according to an embodiment of the present invention is applied.

FIG. 2 is a diagram showing a configuration of an operation unit 70 of the image forming apparatus shown in FIG.

FIG. 3 shows a touch panel 7 in an operation unit 70 shown in FIG.
1 is a diagram showing a configuration of FIG.

FIG. 4 is a block diagram illustrating a configuration of a control circuit of the image forming apparatus illustrated in FIG. 1;

FIG. 5 is a block diagram showing a configuration of a main controller 81 shown in FIG.

FIG. 6 is a block diagram showing a configuration of IPU 83 shown in FIG.

FIG. 7 is a block diagram showing a configuration of a memory controller 94 and an image memory 95 shown in FIG.

FIG. 8 is an explanatory diagram illustrating an operation of writing image information into an image memory 95 by a CPU 91 via a memory controller 94.

FIG. 9 is an explanatory diagram illustrating an operation of reading image information from an image memory 95 by a CPU 91 via a memory controller 94.

FIG. 10 is a flowchart showing an operation of recording and outputting a plurality of copies of image information stored in an image memory 95 from the first page of a document.

FIG. 11 is a flowchart showing an operation of recording and outputting a plurality of copies of image information stored in an image memory 95 from the first page of a document.

FIG. 12 is a diagram showing read error information displayed on an operation unit when a read error is detected.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Copier main body 2 Automatic document feeder 3 Finisher unit 10 Reading unit 11 Contact glass 12 Exposure lamp 13, 14, 15 Mirror 16 Condensing lens 17 CCD image sensor 20 Writing unit 21 Laser output unit 22 Imaging lens 23 Mirror 30 Transfer unit 31 Photosensitive drum 32 Developing unit 33 Conveyor belt 34 Fixing unit 35 Unloading unit 36 Branch claw 37 Main motor 40 Feeding unit 41, 42, 43 Feeding tray 41a, 42a, 43a Feeding unit 41b, 42b, 43b, 45b Paper feed clutch 44 Vertical transport unit 45 Double-sided paper feed unit 51 Document table 52 Feed unit 53 Transport belt 54 Unloading roller pair 55 Cover 56 Document detection sensor 61 Branch claw 62, 63 Transport path 64 Stitch Tray 65 Staple tray 66 Staple unit 70 Operation unit 71 Touch panel 72 Numeric keypad 73 Clear / Stop key 74 Print key 75 Initial setting key 76 Mode clear key 81 Main controller 82 ADF controller 83 IPU 84 Modem 91 CPU 92 ROM 93 RAM 94 Memory controller 95 Image memory 96 I / O port 101 A / D converter 102 Shading correction unit 103 MTF correction / γ correction unit 104, 106 Print synthesis unit 105 Selector 107 Magnification unit 108 Print image data generation unit 111 Input data selector 112 Image synthesis unit 113 Primary compression / expansion unit 114 Secondary compression / expansion unit 115 Output data selector 121 Primary storage unit 122 Secondary storage unit

Continued on the front page (72) Inventor Tsuyoshi Endo 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Co., Ltd. (72) Inventor Moriyuki 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Co., Ltd. (72) Inventor Hiroyasu Sumita 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Co., Ltd. (72) Inventor Toshiya Tagawa 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Co., Ltd. (72) Inventor Tomofumi Harada 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company (72) Inventor Yasuhiro Hattori 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Company (72) Inventor Norio Michiya 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Co., Ltd. (72) Inventor Hiroomi Motobashi 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Co., Ltd. (72) Inventor Hiroshi Mori Ota-ku, Tokyo 1-3-6 Nakamagome Inside Ricoh Co., Ltd.

Claims (5)

[Claims] An input unit for inputting image information of a plurality of originals; a storage unit for storing image information of the original for all pages input by the input unit; and an image information stored in the storage unit. An image forming apparatus comprising: a reading unit that reads a page in an arbitrary order; and an output unit that forms image information read by the reading unit on a recording sheet and outputs the recording information. A read error detecting means for performing a read operation, a control means for stopping an output operation of the output means when a read error is detected by the read error detect means, and a read operation when the read error is detected by the read error detect means. Display means for displaying read error information indicating that an error has been detected. 2. The image forming apparatus according to claim 1, wherein the read error information includes a page number corresponding to the image information detected by the read error detecting unit. 3. An instruction means for instructing a start of an input operation of said input means, wherein when the output operation of said output means is stopped by said control means, one document is set on said input means. When the operation of the input unit is instructed by the instruction unit, the input unit inputs image information of the set original, and the storage unit reads out the image information of the original input by the input unit. The image information in which a reading error has been detected by the error detecting means is replaced and stored. The reading means reads the remaining unread image information from the replaced image information by the storing means. 3. The image forming apparatus according to claim 1, wherein the remaining image information read by the reading unit is formed on recording paper and output. 4. A document having a document table on which the plurality of documents are set, and loading the document set on the document table into the input means one by one and inputting image information by the input means. Document feeding means for carrying out the document from the input means, and instructing means for instructing the start of the operation of the document feeding means, wherein when the output operation of the output means is stopped by the control means, When a document is set on the document table of the document conveying means, and when the operation of the document conveying means is instructed by the instruction means, the document conveying means conveys the document set on the document table to the input means. The input means inputs image information of the document conveyed by the document conveying means, and the storage means reads the image information of the document input by the input means by a read error detecting means. Is replaced with the detected image information and stored. The readout unit reads out the remaining unread image information from the image information replaced by the storage unit, and the output unit is read out by the readout unit. 3. The image forming apparatus according to claim 1, wherein the remaining image information is formed on recording paper and output. 5. A document having a document table on which the plurality of documents are set, loading the document set on the document table into the input means one by one, and inputting image information by the input means. Document feed means for carrying out the input means; and instructing means for instructing start of operation of the document feed means, wherein when the output operation of the output means is stopped by the control means, When a document is set on the platen again, and the operation of the document conveying unit is instructed by the instruction unit, the document conveying unit conveys the document set on the platen again to the input unit, Input means for reading image information of a page corresponding to image information in which a reading error has been detected by the reading error detecting means among the originals conveyed by the original conveying means; The image information of the original input by the input means is replaced with the image information in which the read error is detected by the read error detecting means and stored, and the read means is not read from the image information replaced by the storage means. 3. The image forming apparatus according to claim 1, wherein the remaining image information is read out, and the output unit forms the remaining image information read by the reading unit on a recording sheet and outputs the formed image information.