JP2004343409A - Double-sided image reader - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double-sided image reader capable of realizing double-sided and single-sided read even when one optical read means fails and until it is repaired, and to provide a composite device which instructs the direction of a read original to a user so as to copy the front surface/back surface of the original in an accurate direction/order. <P>SOLUTION: The double-sided image reader for reading both sides of the read original by clamping it by a plurality of read means is provided with a means for deciding the fault of an irradiation / read means, a transmission means for announcing the replacement of an original surface at the time of the fault, a storage medium for storing image data and a switching means for switching the order of reading stored data, and is effectively utilized as a reader continuously even after the fault. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an image reading apparatus that can simultaneously read characters and the like written on both sides of a sheet-like medium such as paper as image information, and to improve usability when one optical reading system fails. belongs to.
[0002]
[Prior art]
There are two typical configurations of a conventional double-sided image reading apparatus. One is a double-sided reading device having one reading unit and a document reversing unit as a unit for reading image information of each side. The other is a double-sided image reading apparatus in which optical reading units are arranged on both sides of a reading document path to enable simultaneous reading of both sides of a document (for example, see Patent Document 1). In the latter case, a device in which two optical reading units move together to read and an automatic conveyance device (hereinafter, referred to as an ADF) are mounted, and the optical reading unit is fixed, but a device that reads both sides by moving a document. There is.
[0003]
First, the former reading apparatus having a configuration in which both sides of a read document are read by the reversing means does not have a plurality of lamps and optical reading means.
[0004]
Further, in the conventional double-sided simultaneous reading apparatus having two optical reading units with the latter document conveyance path interposed therebetween, no special consideration is given to the operation after detecting the abnormal light amount or the recovery operation after stopping due to a failure. .
[0005]
Therefore, the operations performed by the conventional reading apparatus are roughly divided into the following two operations. One is a case where, when a lamp / CCD failure is detected, only the original being read is continued to be read, and even if there is still an original in the paper feed tray, an error is returned without being picked up and the reading is stopped. FIG. 10 shows a typical operation sequence in the related art.
[0006]
The other is to detect abnormalities of the lamp and CCD only during initialization, and not to detect when the light intensity of the lamp has dropped during reading or when the output of the CCD is abnormal. May continue. In this case, the abnormal read image is processed as normal image data, and an abnormal image is output.
Also, what can be said in common with the two-sided simultaneous reading apparatus described above is that if a failure of one of the lamps and the CCD is detected, the initialization can be completed normally unless a service person or the like repairs the lamp or the like. Not be used. Even if a repair is requested, there is a problem that the user cannot use the device until the repair is performed, for example, a service person does not come immediately, which is inconvenient.
[0007]
[Patent Document 1]
JP-A-2-121557 (Section 2-7, FIG. 3)
[0008]
[Problems to be solved by the invention]
As described above, in the conventional double-sided image reading apparatus, little consideration is given to a method after detecting a lamp / CCD abnormality during reading. Therefore, in a device that stops reading and causes a failure, it is necessary to check how many pages the user has normally output the image and read the document that was not output again using another copying machine or the like. There was trouble such as coming out.
[0009]
Further, in a two-sided image reading apparatus in which a failure such as a lamp failure is not detected during reading, an abnormal image such as a dark image is output, or resources are wasted by wasteful output, or However, there is a problem in that a trouble such as re-reading is required.
[0010]
Therefore, an object of the present invention is to provide a double-sided image reading apparatus capable of realizing double-sided and single-sided reading when one of the optical reading means fails and before repairing, and a method for scanning the front and back sides of a document in an accurate direction and order. Provided is a multifunction device that instructs a user on the direction and direction of a read document so that copying can be performed.
[0011]
[Means for Solving the Problems]
In order to solve the above-described problem, the duplex simultaneous reading apparatus according to the present invention includes a document transport unit that transports a document, at least a first optical reading unit that reads image information on the front surface of the document, and a back surface of the document. A second optical reading unit that reads image information; a first control unit that controls an operation of the first optical reading unit; a second control unit that controls an operation of the second optical reading unit; In a two-sided image reading apparatus having a storage unit for storing information and a multifunction apparatus integrated with the image forming apparatus, a unit for detecting the light amount of the irradiation unit, a reference plate provided at a double-sided simultaneous reading position, and the reference plate Monitoring means for constantly monitoring the output at the time of reading by the reading means, counting means for counting the number of documents conveyed by the document conveying means, transmission means for notifying the user that the document is to be fed again, and Rewriting switching means for sequentially writing data in a plurality of areas of the storage means, selection means for selecting a direction of reading an image from the plurality of areas of the storage means for each area, and a power supply for one of the failed optical reading systems Power supply shutoff means for shutting off the supply of power after detecting a failure, etc., during continuous reading using the document conveying means, even when the one irradiation means and the reading means are broken, A double-sided image reading apparatus characterized by instructing re-feeding and performing normal image reading, and a multifunction apparatus characterized by outputting a copy image in a normal original direction and order.
[0012]
As a result, a normal image can be obtained even if only one of the optical reading systems fails. Further, even in the time when normal use is not possible until repair, the burden on the user is increased, but in a reading apparatus which usually has only a straight path conveying means, double-sided reading and double-sided copying can be used.
[0013]
Further, the double-sided image reading device according to the second to fourth and tenth to twelfth aspects has a liquid crystal display unit and an audio output unit in the operation unit, and refeeds the paper to the user when one of the optical reading units fails. The instruction is characterized by switching the display screen and outputting a voice to the user.
[0014]
This eliminates the inconvenience of reversing the direction of the front surface and the back surface during double-sided reading.
[0015]
When the user performs double-sided reading and double-sided printing, it is possible to prevent the inconvenience that the front side and the back side are formed in opposite directions, and to accurately read or copy the read document.
[0016]
In the double-sided image reading apparatus according to the fifth aspect, the number of sheets that can be read normally and the total number of originals are counted, and only the sheet that has been read normally is fed and not read again. It is characterized by.
[0017]
As a result, the life of the fluorescent lamp can be extended without wasting the fluorescent lamp. Further, when re-feeding the document, the user need only reverse the bundle without separating the bundle of originals, so that the user can save time and effort.
[0018]
The double-sided image reading device according to the sixth aspect is characterized in that, after detecting one of the failures, no power is supplied to the failed irradiation unit and the optical reading unit.
As a result, the power of the heating element such as a lamp is forcibly turned off, and security during reading using the other reading unit is ensured.
[0019]
8. The double-sided image reading apparatus according to claim 7, further comprising a plurality of discharge trays, and forming image information on both sides of the recording sheet without stopping the image forming means for the image data which can be normally read on both sides. Control means for discharging while the discharge is completed, the image forming means is paused, and the read original which is reversed and re-mounted is transported, and at the same time, means for activating the image forming means, Means for selecting the order of processing image data that has been stored without forming image information on recording paper, the direction of the surface to be discharged, and the discharge tray to be discharged according to the reading surface at the start of reading and the failed optical reading device Means for forming and discharging the recording image on both sides of the recording paper while sequentially switching between the stored image data and the image data currently being read.
[0020]
By making it possible to select the discharge port and the paper discharge surface, the order and direction of the read image and the order and direction of the copy image can be easily aligned. In addition, when one of the optical reading units is used in a failure, the read image data can be output at any time, so that the throughput can be improved.
[0021]
10. The double-sided image reading device according to claim 8, wherein the image forming unit determines whether or not to discharge the paper for sorting after the completion of the discharging, according to the reading surface and the discharge surface. Discharge control means for discharging the paper, and the discharge control means determines the size and orientation of the original in the paper feed tray provided in the image forming apparatus, and discharges the sort paper different from the size and orientation of the original being copied. It is characterized by being made possible.
[0022]
When the order of the read image and the order of the output image are reversed, by inserting paper for sorting, even in a multifunction device having no plurality of trays, the order of the read image and the The orientation and the order and orientation of the copy images can be easily aligned. Further, since it is not necessary to output the image after reading all the read images once, the throughput can be improved.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
(First embodiment)
The image reading apparatus according to the present invention includes, for example, an image reading apparatus as shown in FIG. The image reading apparatus includes an automatic document feeder 201 (hereinafter, referred to as an ADF). Further, a first optical reading unit 106 for reading the original placed on the contact glass 101 and a second optical reading unit 209 for reading the original while conveying the original are provided. However, the first optical reading unit 106 does not necessarily need to be configured to perform scanning.
[0024]
The optical reading unit here includes an irradiation light source, a reflection mirror, a condenser lens, and a CCD. Therefore, when the first reading unit 106 moves to the ADF reading position, the document stacked on the paper feed tray 202 is picked up by the pickup roller 203 and conveyed to the document reading position by the paper feeding roller 204, and at the same time, Irradiation is performed by the first light source 102 and the second light source 205, and simultaneous reading can be performed by the first CCD 105 and the second CCD 208.
[0025]
Taking the first optical reading unit 106 as an example, as a reading method, the light from the irradiation light source 102 is irradiated on the document, and the reflected light is read by the condenser lens 104 via the reflection mirror 103 as a reading unit. After the light is received by the CCD 105, photoelectric conversion is performed to obtain image information in the main scanning direction. When reading an original by the ADF, image information in the sub-scanning direction of the original is obtained by sequentially moving the original. Thereafter, the sheet is discharged to a sheet discharge tray 212 by a sheet discharge roller 211.
[0026]
Next, the image forming apparatus 300 of FIG. 1 will be briefly described. An image writing laser scanner 301 performs image processing on the read image, and then irradiates a laser beam to the image forming drum 310 according to a recording signal to form a latent image. Further, a toner image is formed by toner supplied from a toner supply device (not shown). Reference numerals 302 and 303 denote upper and lower cassettes, respectively, for storing recording media such as paper or sheet film.
[0027]
A recording sheet is picked up from a cassette 302 or 303 by a pickup roller 304 in accordance with a recording signal, supplied to a position facing the photoconductor drum 310 one by one by a conveyance roller 305 and a separation roller 306, and is transferred by a transfer device 309 to the photoconductor drum 309. Is formed on the recording medium.
[0028]
Then, the recording sheet to which the toner image has been transferred is sent to the fixing device 311 and fixed.
[0029]
When an image is formed on both sides of the recording medium, the sheet conveyance is switched by the flapper 312 and the recording medium is conveyed to the double-sided conveyance path 313. The recording sheet on which the image is fixed by the fixing device 311 is discharged to a discharge tray 315 by a discharge roller 314 provided downstream of the fixing device 311.
[0030]
FIG. 2 is a block diagram of the duplex reading apparatus according to the present invention. The double-sided reading device is roughly composed of two optical reading units, a control unit for controlling image data and motor control, an operation unit, and an image forming unit.
[0031]
First, the operation unit 423 includes an LCD 425, various keys, and a speaker 426 for guiding a user to an operation procedure. Further, an instruction to the user can be displayed on the LCD 425 as an animation.
[0032]
Explaining the first optical reading unit, the first CPU performs ON / OFF control of the lamp, comparison of digitally converted CCD output values, and the like. The CCD output read by the CCD is amplified and subjected to A / D conversion through a clamp for adjusting the lower limit voltage level of the AD converter so that the value read from the white reference plate becomes the maximum value. Then, the image data is output to image processing, and various image data processing such as shading correction, MTF correction, and gamma correction are performed. Also, since a number of methods related to lamp abnormality detection are described, including special registration 1978275, they will not be described in detail here, but will be briefly described. As the detection means, the reflected light from the reference plate between the sheets until the document is conveyed is input to the CCD using a white reference plate or the like placed at the reading position, and the maximum position of the CCD output at that time is input. And the minimum value or the average value.
[0033]
Whether the image signal transferred from the image processing unit is transmitted to the image forming unit by the image data control unit, or the image data storage medium is sequentially switched and stored in an area divided according to each optical reading unit. , The third CPU communicates with the first and second CPUs and the image forming unit 427 to select.
[0034]
Next, a control method of the duplex image reading apparatus according to the present invention will be described with reference to a flowchart. In step S100, in the standby state, it is determined whether to perform ADF reading or FB reading. In S101, it is detected whether there is a document on the document tray. When a document is detected, the process proceeds to S103, where the user selects one-sided reading or two-sided reading. First, the case of single-sided reading will be described. The document placed on the document tray is separated downward by the pickup roller 304 and the paper is started to be fed, and is read by the second reading unit. Then, the process proceeds to S106, and the number of read sheets is counted up. At the same time, in step S108, a lamp abnormality is detected from the reference plate installed at the reading position. If the light amount is equal to or more than the predetermined value, the process proceeds to S110 and the reading ends normally. On the other hand, the image forming apparatus 300 receives the image data and sequentially prints out the image data.
[0035]
However, if it is determined that the lamp is abnormal during continuous reading, the lamp is turned off and the number of read sheets currently being read is stored. Further, even after the lamp 211 is turned off, the conveyance is completed without stopping the conveyance motor. Further, the total number of original bundles is also stored. At this time, the image forming apparatus prints out the normally read image, discharges the image to the image forming apparatus discharge tray 315, and feeds the temporary print operation.
[0036]
At this time, an animation is displayed on the display panel so that the read original bundle is inverted and fed again. At the same time, the notification may be made by voice from the speaker. Then, document detection is performed again, and a few seconds after the detection, the sheet feeding is automatically started. At this time, no FB read command is accepted. After the paper feeding is resumed, the reading is performed by the first reading unit and the reading is performed from the first page, so that the image data is stored in the storage medium in S117. When the number of read sheets reaches the predetermined number, the lamp is turned off (S118), printing is started, and the reading and printing operations are completed (S122 and S123). (The predetermined number is obtained from the number of sheets read at the time of failure and the total number of read original bundles.)
By operating in this manner, even when reading is performed by different reading units, it is possible to obtain a normal image output in a normal order without changing the order of the document bundle in the same job.
[0037]
A control method when a failure occurs during duplex reading will be described. As in the case of single-sided reading during double-sided reading, the number of read sheets is counted up as needed (S201). In addition, the output of the white reference plate disposed outside the main scanning area is constantly monitored to detect a failure (S204). On the other hand, the image forming apparatus receives the image data sent from the reading apparatus (S202), proceeds to S203, starts printing in order from the image data from the first reading unit, and faces the original face up. Perform double-sided printing to eject the paper.
[0038]
In step S205, it is determined which one of the reading units has detected the failure. If the first reading unit has failed, the process proceeds to step S208. In S208, the first lamp is turned off. At this time, the second reading unit continuously reads the image as it is, and sequentially stores the image data of the odd-numbered pages after the occurrence of the failure in the storage medium. Next, the process proceeds to step S212, where the LCD display and the announcement clearly instruct the user to reverse and transport the read document so that the user can accurately re-feed the document. The double-sided image reading device detects whether a document is placed on the paper feed tray and automatically feeds the paper. Since the image is read from the head of the even numbered page of the document bundle, the data is stored in a memory area different from the memory area storing the image of the odd numbered page. When the number of read sheets reaches the predetermined number, the lamp is turned off. (The predetermined number is obtained from the number of sheets read at the time of failure and the total number of read original bundles.) Printing is restarted simultaneously with turning off the lamp. In step S217, the stored data is read from the head at the first reading (from the oldest read data), while the stored data at the time of reading after re-feeding is read from the buttocks (from the new read data). Send to the forming device. These image data are received, and two-sided printing is performed so that odd-numbered pages are discharged face-up, and then discharged.
[0039]
By discharging in this way, even in a multifunction device that does not have a plurality of trays and discharges the front side of a document face-up, it can always read and output a normal image without changing the order of the scanned document. Can be.
[0040]
(Second embodiment)
As a second embodiment, there is a multifunction device capable of face-up discharge and face-down discharge, and discharges a partition sheet when reversing a read original and re-feeding. It is desirable that the partition paper is different from the output paper being printed in size or orientation of the original.
[0041]
Referring to FIG. 5, a case will be described in which only a portion different from that of the first embodiment fails during single-sided reading.
[0042]
First, the second embodiment differs from the first embodiment in that the first page can be read, and the output sheet output as needed is discharged in the face down mode because the face down sheet can be fed. In step S313, it is confirmed whether the number counted in step S310 has been successfully printed. When the printing of the number of sheets until the next failure is completed, the document size and orientation of the paper feed tray of the image forming apparatus are determined, and a sheet having a different document size or a different direction from the output sheet that has been output is discharged as a partition sheet. Perform After that, pause.
[0043]
In response to an instruction such as a reverse re-feeding instruction to the user in S316, reading of the re-fed original starts from the last page. Thereafter, printing is performed in the order of the read pages, and paper is discharged at Face up. Thereafter, as in the first embodiment, when the number of printed sheets after the failure reaches a predetermined number, the lamp is turned off, and only the document is continuously transported until there are no more documents in the paper feed tray.
[0044]
Further, when the printing is completed, the user is notified by an LCD display or voice so that the output documents can be easily and accurately overlapped in the arrangement order. This makes it easy to superimpose two document bundles arranged in reverse order on a single document bundle while minimizing the burden on the user. Can be created.
[0045]
Also in a multifunction device having a plurality of paper discharge ports as described in the third embodiment, it is effective when a document is placed on a paper discharge tray.
[0046]
(Third embodiment)
As a third embodiment, there is a configuration of the multifunction device of FIG. 1 in which a paper discharge device having a document reversing mechanism as shown in FIG. 6 is mounted. The paper discharge device 500 receives a document that has been discharged from the image forming apparatus by a paper discharge roller 501 and discharges the document to a discharge unit. At this time, when the document is reversed, the document is conveyed to the document reversing discharge unit by the reversing conveyance roller 503 via the first reversing flapper 502. Next, when the document is conveyed to the reverse feeding roller 505 and the trailing edge of the document is detected by the document detection sensor 504, the reverse feeding roller 505 stops the normal rotation once and starts the reverse rotation. Next, the second reversing flapper 506 and the third reversing flapper 507 operate the discharge port to discharge. The paper discharge device 500 is an example, and can be applied to other composite devices as long as a paper discharge device having a plurality of trays is provided.
[0047]
The multifunction peripheral according to the present invention is provided with an operation table for operations to be performed when a failure occurs, as shown in FIG. 7, according to the reading method before the failure, the paper discharge direction, and the optical reading unit in which the failure has occurred. Although not shown in FIG. 7, the instruction to re-feed the ADF and the instruction to align a plurality of document bundles (to one) from a plurality of trays are provided.
[0048]
Here, a description will be given of a case where a lamp abnormality is detected in step S407 when the read original is read from the first page and the printed output paper is discharged in the face down from the first page.
[0049]
At this time, the multifunction device operates according to the operation sequence shown in FIG. 8, but the operation after S417 is changed according to the state of the multifunction device at the time of failure. That is, a description will be given of S417 and subsequent steps which are different from the first and second embodiments. First, in S416, when re-reading of the read document is started, in S417, a discharge port on which no copy document is placed is detected, and if there is an empty discharge port, printing is started (S418). Next, the process proceeds to S419, and the paper is discharged to an empty tray with Face up.
[0050]
Thereafter, when the printing is completed, the user is notified by an LCD display or voice so that the document bundles output to the plurality of paper discharge ports in S424 can be accurately overlapped.
[0051]
On the other hand, if it is determined in step S417 that there is no empty discharge port, the process advances to step S425 to read the read document from the last page and store the image data in the memory. After all reading is completed, printing is started from the first page of the read document.
[0052]
As a result, even if a failure occurs on the way, a normal read image and a copy image can be taken in the correct order and orientation.
[0053]
Here, only the case where the paper is separated and fed in the ADF has been described, but the present invention can also be applied to an ADF in which the paper is separated and then fed.
[0054]
As described above, the case where a failure has occurred during reading has been mainly described. However, the multifunction peripheral according to the present invention is configured so that it can be continuously used as a two-sided copying machine even after one of the reading units fails. Has become. That is, the operation sequence of double-sided reading when one of the optical reading units fails is as shown in FIG.
[0055]
First, in step S501, a malfunctioning optical reading unit is detected, and a message is displayed on the LCD for the user. This makes it possible to notify the user of the orientation of the read original at the time of single-sided reading and prevent the copied output image from becoming a white image. If the next document is placed and double-sided reading is specified, the user is required to input the orientation of the odd-numbered page from the operation unit in S505, and the printing order or orientation is automatically selected in S511. And start printing.
[0056]
Thus, even when one of the reading units is out of order, double-sided copying can be performed while reducing the burden on the user.
[0057]
【The invention's effect】
In a double-sided simultaneous reading device having a plurality of irradiation units and a plurality of reading units, when one optical reading unit detects a failure during reading, and repair of the failed reading unit can be performed without adding a new circuit. Until completion, both-sided and single-sided reading are possible, and the apparatus can be used as a copy machine. In addition, since the user is also notified of the operation guide by a screen or voice, the discharge direction and order of the copy original can be copied accurately, so that useless work and useless paper are not used.
[Brief description of the drawings]
FIG. 1 is a typical double-sided image reading apparatus and image forming apparatus according to a first embodiment.
FIG. 2 is a typical block diagram of the first embodiment.
FIG. 3 is a typical sequence of the first embodiment (single-sided reading).
FIG. 4 is a typical sequence of the first embodiment (double-sided reading).
FIG. 5 shows a typical sequence (single-sided reading) of the second embodiment.
FIG. 6 is a typical sheet discharging device according to a third embodiment.
FIG. 7 is an operation management table according to the third embodiment.
FIG. 8 shows a typical sequence (single-sided reading) of the third embodiment.
FIG. 9 is a double-sided copy operation sequence at the time of failure.
FIG. 10 shows an operation sequence of a typical conventional double-sided image reading apparatus.
[Explanation of symbols]
101 Platen glass
102 First illumination light source
103 First reflection mirror
104 First condenser lens
105 First CCD
106 carriage (first optical reading unit)
107 First white reference plate
201 Automatic Document Feeder (ADF)
202 paper tray
203 Pickup roller
204 paper feed roller
205 second irradiation light source
206 second reflection mirror
207 Second condenser lens
208 Second CCD
209 Second optical reading unit
210 second white reference plate
211 Paper ejection roller
212 Output tray
213 manuscript
300 Image forming apparatus
301 Laser Scanner
302 Upper cassette
303 lower cassette
304 Pickup roller
305 separation roller
306 separation pad
307,308 Introducing roller pair
309 Transfer device
310 Photosensitive drum
311 Fixing drum
312 Flapper
313 Double-sided conveyance path
314 Paper ejection roller
315 Paper Output Tray for Image Forming Apparatus
400 first reading unit
401 First lamp
402 First CCD
403 First A / D Conversion Module
404 First gain correction
405 First image processing unit
406 first CPU
407 Second reading unit
408 Second ramp
409 Second CCD
410 Second A / D Conversion Module
411 Second gain correction
412 second image processing unit
413 Second CPU
414 Image data control unit
415 Third CPU
416 control unit
417 Storage medium
418 Memory area for first reading unit
419 Second read unit memory area
420 Motor and other control drivers
421 Various sensors
422 Various motors and solenoids
423 Operation unit
424 CPU
425 LCD
426 speaker
427 Image Forming Apparatus
500 paper output device (two-stage sorter)
501 First paper discharge transport roller
502 First Reversal Flapper
503 Reverse transport roller
504 Document detection sensor
505 reverse paper feed roller
506 Second reversal flapper
507 Third inverted flapper
508 Second paper discharge transport roller
509 Upper discharge roller
510 Lower discharge roller
511 Upper Output Tray
512 Lower output tray

Claims (12)

Document conveying means for conveying a document, at least first optical reading means for reading image information on the front side of the document, second optical reading means for reading image information on the back side of the document, and the first optical reading means The first control means for controlling the operation of the second optical control means for controlling the operation of the second optical reading means, in a double-sided image reading device having a storage means for storing image information,
Means for detecting the light quantity of the irradiating means, a reference plate provided at the double-sided simultaneous reading position, monitoring means for constantly monitoring the output when the reference plate is read by the reading means, and a document conveyed by the document conveying means Counting means for counting the number of sheets, transmission means for notifying the user that the document is to be fed again, etc., rewriting switching means for separately writing the area of the storage means according to the direction of the reading means and the document, and rewriting the image from the storage means. Selection means for sequentially selecting the reading direction, and power supply cutoff means for cutting off the supply of power after detecting a failure in the power supply or the like of one of the failed optical reading systems,
If one of the optical reading systems fails during continuous reading using the document conveying means, one of the optical reading means capable of reading is continuously read until one of the documents stacked on the sheet feed tray runs out. A two-sided image reading apparatus, wherein when one of the optical reading means is out of order, the other optical reading means is used for reading. 2. The double-sided image reading apparatus according to claim 1, wherein when one of the optical reading units performs a double-sided reading operation in the event of a failure, the side of the document once read is reversed and the document is stacked on the sheet feeding tray again. The transmission means for notifying the user is provided. According to a second aspect of the present invention, the user transmitting means has a display means for giving an operation instruction to the user by switching a screen. The user transmitting means according to the second and third aspects is a voice output means. In the double-sided image reading apparatus according to the second aspect, when the original is placed on the paper feed tray again, the original which can be normally read on both sides is read again only by transporting the original. It is characterized by not having. The double-sided image reading apparatus according to any one of claims 1 to 5, wherein when a failure of the optical reading unit is detected, the power supply is controlled so that power is not supplied to the failed optical reading unit. . 7. A multifunction apparatus comprising: the double-sided image reading device according to claim 1; and an image forming unit that edits an image output from the image reading device and forms the image on an image carrier. And a plurality of discharge trays, and image data that can be normally read on both sides is recorded on both sides of the recording sheet without being stopped by the image forming unit. Control means for discharging while forming image information;
After the ejection is completed, the image forming unit is temporarily stopped, the read document is reversed, and the sheet feeding is restarted. At the same time, the unit for activating the image forming unit, a reading surface at the start of reading, and a failed optical Means for selecting the order of processing image data that has been stored without forming image information on recording paper, the direction of the surface to be discharged, and the discharge tray to be discharged, according to the reading unit, A multifunction device comprising: means for forming and discharging the recording paper on both sides while sequentially switching the image data in the multifunction peripheral. 7. A multifunction apparatus comprising: the double-sided image reading device according to claim 1; and an image forming unit that edits an image output from the image reading device and forms the image on an image carrier. The image forming means has a reversing sheet feeding means for reversing sheet feeding, and for image data which can be normally read on both sides, image information is formed on both sides of a recording sheet without pausing by the image forming means. Control means for discharging the paper while the image forming means is in accordance with the reading surface and the discharge surface; means for determining whether or not to discharge the paper for sorting after the discharge is completed; and discharge control for discharging the paper for sorting. Means,
A means for activating the image forming means at the same time as reversing the read original and restarting the paper feeding, a means for selecting a direction of a surface to be discharged according to the failed optical reading means, The multifunction apparatus according to claim 1, further comprising means for forming and discharging the recording paper on both sides while sequentially switching the image data being read. The discharge control means for discharging the sorting paper according to claim 8 determines the size and orientation of the original in the paper feed tray provided in the image forming apparatus, and differs from the size and orientation of the currently discharged original. The paper for sorting is discharged. The display means provided in the multifunction peripheral according to the seventh to ninth aspects is characterized in that it has a transmission means for notifying a user that a document bundle whose document order is reversed is correctly adjusted. According to a tenth aspect of the present invention, the user transmitting means has a display means for giving an operation instruction to a user by switching a screen. The user transmitting means according to the tenth and eleventh aspects is a voice output means.

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