JP2002314771A - Image reader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image reader that can enhance operability and inform a user about the abnormal state of the image reader. SOLUTION: A digital composite device 20 is provided with an image read section 2, that reads on original image, converts the image into image data and provides an output, a LAN interface 12 that is connected to client PCs 30 and conducts communication with them, and an image memory 8 that stores the image data. A main control section 1 makes the image read section 20 read the original, convert the image into image data, store the data to the image memory 8, on the basis of a read instruction signal read from the client PCs 30 ('YES' in step S2 in Figure 4 and 'YES' in step S21 in Figure 6), and displays it (YES in step S5 or S6 and YES in step S23 or S25) or informs the user of it (steps S9, S10, S15, S16 and S31-S35 in Figure 7) when a prescribed fault state occurs.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus which reads an original image and converts it into image data, such as an image scanner (hereinafter, referred to as a scanner) or an image reading section of a digital multifunction peripheral.

[0002]

2. Description of the Related Art A digital multifunction peripheral, which is a facsimile machine with a copy, printer, and scanner function, and a plurality of client devices such as personal computers are connected to a local area network (hereinafter referred to as LAN).
A LAN system that is connected via the Internet has been put to practical use. In this prior art LAN system, the scanner in the digital multifunction peripheral reads the original image and converts it into image data, stores it in a memory box in the image memory corresponding to each client device, and issues a transfer instruction from each client device. The image data is read from the memory box in the image memory in response to the request signal and transferred to the corresponding client device via the LAN. Here, the transfer instruction request signal from each client device includes the designation data of the memory box, and each client device is configured to designate the memory box and read out the image data.

[0003]

In a conventional LAN system, the reading and storing of a document are instructed from an operation panel of a scanner or each client device.
If the number of pages to be scanned exceeds a specified number or the image memory overflows, the read image data is invalid. Similarly, when a document to be scanned is jammed in the scanner, the read image data is invalid.

A first object of the present invention is to solve the above-mentioned problems and to provide an image reading apparatus capable of notifying an abnormal state in the image reading apparatus and improving the operability of the apparatus.

A second object of the present invention is to provide an image reading apparatus capable of storing read image data as effective data even if an abnormal state occurs in the image reading apparatus.

[0006]

According to the present invention, there is provided an image reading apparatus for reading an original image, converting the image into image data, and outputting the image data. The image reading apparatus is connected to an external terminal device and communicates with the external terminal device. An external connection unit, a storage unit for storing image data, and an abnormal state when the image data read and converted by the image reading unit is stored in the storage unit based on a predetermined reading instruction signal. And a notifying means for notifying that effect.

In the above image reading apparatus, when the reading instruction signal is transmitted from the operation section of the image reading apparatus, the notifying means displays on the display section of the image reading apparatus that the abnormal state has occurred. On the other hand, when the read instruction signal is transmitted from the external terminal device, the external terminal device is notified of the occurrence of the abnormal state.

In place of the above, in the image reading device, a setting is made to set whether the occurrence of the abnormal state is displayed on the display unit of the image reading device and notified or the external terminal device is notified. It is characterized by further comprising means.

In the above image reading apparatus, the abnormal state is when the number of originals to be scanned exceeds a predetermined number or when the storage means overflows the memory. Based on an instruction signal for validating the image data stored in the
The image processing apparatus further includes control means for storing and holding the image data as valid data in the storage means.

In the image reading apparatus, the abnormal state is a document jam in the image reading apparatus, and is based on a re-reading processing instruction signal for instructing the image reading means to resume reading. ,
The image processing apparatus further includes control means for restarting reading by the image reading means.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

<Embodiment> FIG. 1 is a block diagram showing the configuration of a LAN system having a digital multifunction device 20 which is a facsimile device with a copy, printer and scanner function according to an embodiment of the present invention.

The LAN system according to this embodiment includes a plurality of N client personal computers (hereinafter, referred to as client personal computers).
Client PC. ) 30-1 to 30-N (hereinafter collectively referred to as 30), a digital multifunction peripheral 20 connected to a public telephone network 80 via a public telephone line L, and a router connected to the Internet 90 Device 6
0 are connected via a LAN 70.
By connecting from each client PC 30 to the Internet 90 via a router device 60 or a mail server device (not shown), it is possible to browse home pages and send and receive e-mails.
30 accesses the digital multifunction peripheral 20 to copy, print,
The scanner and the facsimile can be commonly used.

The digital multifunction device 20 according to the present embodiment
The image reading unit 2 reads an original image, converts the image data into image data, and outputs the image data. The LAN interface 12 is connected to the plurality of client PCs 30 and communicates with the plurality of client PCs 30. The image memory 8 stores image data. The main control unit 1 performs the processing based on the reading instruction signal from the client PC 30 (step S2 in FIG. 4).
YES, YES in step S21 in FIG. 6), the image reading unit 20 reads the original, converts the original into image data, and stores the image data in the image memory 8. If a predetermined abnormal state occurs at this time (step S5 or S5). (YES in S6, YES in step S23 or S25), and display that effect (steps S9, S10, S15, S16, S3 in FIG. 7).
1-S35).

Here, when the read instruction signal is transmitted from the operation unit 5 of the digital multifunction peripheral 20 (NO in step S8, NO in step S14), the main control unit 1 generates the abnormal state. This is displayed on the display unit 4 of the digital multifunction peripheral 20 to notify the user (steps S10 and S16). On the other hand, when the reading instruction signal is transmitted from the client PC 30 (step S10).
(YES in step S8, YES in step S14), and notifies the client PC 30 that the abnormal state has occurred (steps S9 and S15). Further, the setting means sets whether to display and notify on the display unit 4 of the digital multifunction device 20 that the abnormal condition has occurred or to notify the display unit 104 of the client PC 30 of the occurrence of the abnormal state in the digital multifunction device 20. An operation unit 5 is provided (steps S31 to S35 in FIG. 7).

Overflows the memory (YE in step S6).
S), in the abnormal state, based on an instruction signal for validating the image data stored in the storage means (YES in step S11, YE in step S17).
S), the image data is stored and held as valid data in the storage means (Step S12, Step S1)
8). Alternatively, the abnormal state may be caused by a document jam in the image reading apparatus (step S23 or S23).
(YES in step S25), and based on the rereading process instruction signal instructing to restart reading by the image reading unit 2 (YES in step S38), reading by the image reading unit is restarted (steps S38 to S23). Proceed to).

FIG. 2 is a block diagram showing the configuration of the client PC 30 shown in FIG.

In FIG. 2, the client PC 30
An external terminal device, which is a known personal computer, executes processes such as generation, recording, and storage of image data and character data. In the present embodiment, for example, the client PC 30 is used as an external terminal device that receives image data scanned by a scanner. The main control unit 101 is specifically configured by a CPU, is connected to the following hardware units via a bus 113, controls them, and executes various software functions to be described later. This client PC 30
, An image reading unit and an image recording unit (not shown) are provided as options. The display unit 104 is a display device such as a liquid crystal display (LCD) or a CRT display, and displays an operation state of the client PC 30 and displays image data of a document to be transmitted and received image data. The operation unit 105 is, for example, a keyboard for inputting character data and instruction commands.

The ROM 106 stores the client PC 3
0 are stored in advance, which are various software programs necessary for the operation of No. 0 and executed by the main control unit 101.
The RAM 107 includes an SRAM, a DRAM, an SDRA
M is used as a working area of the main control unit 101 and stores temporary data generated when the program is executed. In addition, hard disk drive 1
Reference numeral 08 denotes a storage device having a built-in recording medium, which stores an application program to be executed and an image memory.

Client PC configured as described above
At 30, the main control unit 101 of the client PC 30
When transferring the image data stored in the corresponding memory box in the memory box area 8a after being scanned and converted by the image reading unit 2 to its own device, the instruction data instructing the corresponding memory box is transmitted. Including the transfer instruction request signal including the LAN interface 112 and the LAN 7
0 to the main control unit 1 in the digital multifunction peripheral 20, and in response to this, the digital multifunction peripheral 20
Receives image data transmitted via the LAN 70 from the hard disk drive 9. Further, when an abnormal state such as a document jam such as a document separation failure occurs in the image reading unit 2 of the digital multifunction peripheral 20, after the document is removed in the automatic document separation unit and the document is set on the ADF unit or the platen, By transmitting the re-read processing instruction signal, the read processing can be restarted.

FIG. 3 is a block diagram showing the configuration of the digital multifunction peripheral 20 of FIG.

In FIG. 3, the digital composite device 20
Has a copy, printer, and scanner function in addition to a conventional G3 facsimile communication function. The main control unit 1 is specifically composed of a CPU, is connected to the following hardware units via a bus 13, controls them, and executes various software functions to be described later. The image reading unit 2 reads a document with a scanner using a CCD or the like, and outputs dot image data converted into black and white binary. The image recording unit 3 is a printer device of, for example, an electrophotographic system, and the image reading unit 2
And prints out a hard copy of the image data scanned and converted by facsimile communication or image data received from another facsimile apparatus, or records character data.

The display unit 4 is a display device such as a liquid crystal display (LCD) or a CRT display. The display unit 4 displays the operation state of the digital multifunction peripheral 20, and transmits image data of a document to be transmitted and received image data. Is displayed. The operation unit 5 includes character keys, dial numeric keys, speed dial keys, one-touch dial keys, various function keys, and the like necessary for operating the digital multifunction peripheral 20. The display unit 4 may be configured to be a touch panel type so that some or all of the various keys of the operation unit 5 can be substituted. The operation unit 5 scans an ADF unit of the image reading unit 2 or a document placed on a document table, converts the document into image data, and stores the image data in the image memory 8. A signal is generated.
In addition, the operation unit 5 can generate the above-described re-reading process instruction signal, thereby restarting the reading process. Further, the operation unit 5
The occurrence of the abnormal state is indicated by the digital multifunction peripheral 20.
And a switch for selectively setting whether to display on the display unit 4 for notification or to notify on the display unit 104 of the client PC 30.

The ROM 6 stores the digital multifunction device 20
In this embodiment, at least the memory overflow and the page number over-recovery processing shown in FIGS. 4 and 5 are performed, and various software programs necessary for the operation and executed by the main control unit 1 are stored. , Client PC 3 shown in FIGS. 6 and 7
This includes a program for jam recovery processing when an instruction to scan a document from 0 is issued. RAM7 is SRAM, DRAM, SD
It is composed of a RAM or the like, and is used as a working area of the main control unit 1 and stores temporary data generated when a program is executed. When a flash memory is used as the RAM 7, even if the power is cut off due to a power failure, a movement of the apparatus, or the like, the contents of the data are not lost.

The image memory 8 is composed of a DRAM or the like, and stores image data to be transmitted or received image data, or scanned and converted image data. here,
The image memory 8 includes a memory box area 8a divided into a plurality of memory boxes corresponding to a plurality of client PCs 30. Each client PC 30 transfers the image data transmitted / received by the facsimile function, the image data scanned and converted by the scanner function or the copy function, and the image data when using the printer function to the corresponding memory box and temporarily stores the image data. Stored in
When reading from the memory box, the transfer instruction request signal is transmitted to read and transfer from the corresponding memory box. Further, the hard disk drive 9 is a storage device having a built-in recording medium, and stores various data and programs.

The fax modem 10 is connected to a public telephone line L
And has the function of a fax modem for normal facsimile communication. An NCU (Network Control Unit) 11 is a hardware circuit that performs closing and opening operations such as a DC loop of an analog public telephone line L and has an automatic dial function. To the public telephone line L. Here, the NCU 11 detects an ID receiving terminal activation signal and a normal telephone call signal in the outgoing telephone number notification service, and transmits a primary response signal and a secondary response signal in the outgoing telephone number notification service as necessary. can do. The NCU 11 may be connected to a baseband transmission type digital line (for example, an ISDN line) via a predetermined terminal adapter and a DSU (Digital Service Unit).

Further, the LAN interface 12
While being connected to the LAN 70 and receiving signals and data from the LAN 70, it transmits signals and data to the LAN 70 and executes interface processing related to LAN communication such as signal conversion and protocol conversion.

In the facsimile communication function of the digital multifunction peripheral 20 configured as described above, the dot image data transferred from each of the client PCs 30-1 to 30-N or the dot image data read by the image reading unit 2 is M defined in the standard of facsimile communication
After being encoded by software in accordance with an encoding system such as H, MR, MMR, etc., it is transmitted to the other party's facsimile apparatus, and on the contrary, the encoded data received from the other party's facsimile apparatus is also decoded into software by the software. After being converted, it is stored in the image memory 8 and printed by the image recording unit 3 as needed.

FIGS. 4 and 5 are flowcharts showing the memory overflow and page number over recovery processing executed by the main controller 1 of FIG.

In FIG. 4, first, after clearing the page number count Cp to 0 in step S1, in step S2, it is determined whether or not a reading instruction signal of the scanned image data is received from the client PC 30 or the operation unit 5. Is determined, and when YES is determined, the process proceeds to step S3.
If NO, the process returns to step S1. Then, step S
In step S3, the reading process and the storing process in the image memory 8 of the digital multifunction peripheral 20 are executed. In step S4, the page number count Cp is incremented by one.
It is determined whether or not the threshold value is greater than th (for example, 100 sheets, and an abnormal state is determined to have occurred at this time). If NO, the process proceeds to step S6. Step S6
It is determined whether or not a memory overflow has occurred. If YES, the process proceeds to step S14 in FIG. 5, while if NO, it is determined in step S7 whether there is a document in the ADF unit or the reading unit. If YES, the process returns to step S3, while if NO, the process returns to step S1.

When YES is determined in the step S5, it is determined whether or not the reading instruction signal of the scanned image data is from the client PC 30 in a step S8.
In the case of ES, the process proceeds to step S9, whereas in the case of NO, the process proceeds to step S10. In step S9, the page number excess is notified to the client PC 30, the page number excess is displayed on the display unit 104 of the client PC 30, and the process proceeds to step S11. On the other hand, in step S10, the page number excess is displayed on the display unit 4 of the digital multifunction peripheral 20, and the process proceeds to step S11. Step S11
Then, it is determined whether or not there is a signal indicating whether the stored image data is valid or not. If YES, the process proceeds to step S12, and if NO, the process proceeds to step S13. In step S12, the stored image data is saved as valid, and the process returns to step S1. Also, in step S13, the stored image data is deleted and step S13 is executed.
Return to 1.

Further, in step S14 of FIG. 5, the read instruction signal of the scanned image data is
It is determined whether or not from C30. If YES, the process proceeds to step S15, while if NO, the process proceeds to step S16. In step S15, the memory overflow is notified to the client PC 30, the memory overflow is displayed on the display unit 104 of the client PC 30, and the process proceeds to step S17. On the other hand, in step S16, the memory overflow is displayed on the display unit 4 of the digital multifunction peripheral 20.
And the process proceeds to step S17. Then, step S
In step 17, it is determined whether or not there is an instruction signal for validating the stored image data.
On the other hand, if the determination is NO, the process proceeds to step S19.
After saving the stored image data as valid in step S18, the process returns to step S1 in FIG. On the other hand, after deleting the stored image data in step S19, the process returns to step S1 in FIG.

FIGS. 6 and 7 are flowcharts showing a jam recovery process executed by the main control unit 1 shown in FIG. 3 when a document scanning instruction is issued from the client PC 30.

In FIG. 6, first, after resetting the page number counter value Cc to 0 in step S21, it is determined in step S22 whether or not a reading instruction signal for document scanning from the client PC 30 has been received. Returns to step S21, while if YES, proceeds to step S23. In step S23, it is determined whether a document jam such as a document separation failure has occurred. If YES, the process proceeds to step S31 in FIG.
If NO, the process proceeds to step S24. Next, in step S24, the original is converted into read image data for one page and stored in the image memory 8, and it is determined in step S25 whether or not a document jam such as an original separation failure has occurred. While the process proceeds to step S31 in FIG. 7, if NO, the process proceeds to step S26. further,
After adding 1 to the page number counter Cc in step S26, it is determined in step S27 whether there is a document on the ADF unit or the platen. If YES, the process returns to step S23. If NO, the process returns to step S23. It returns to S21.

In step S31 of FIG. 7, it is determined whether or not the display is set on the display unit 4. If NO, the process proceeds to step S33. If YES, the process proceeds to step S32. After displaying the page on the display unit 4, the process proceeds to step S33. Next, in step S33, it is determined whether or not the display has been set on the display unit 104.
On the other hand, when the result is YES, the process proceeds to step S34. Then, in step S34, a document jam and reading resumption page information is notified to the client PC 30 which has transmitted the reading instruction signal. In step S35, a document jam and reading resuming page is displayed on the display unit 104. It is determined whether or not the original has been removed from the set.
36 is repeated, and when YES is determined, the process proceeds to step S37, where it is determined whether a document is set on the ADF unit or the platen. When NO is determined, step S37 is performed.
Is repeated, and when YES is determined, step S
At 38, it is determined whether the rereading process has been started from the client PC 30 or the operation unit 5, and if NO, the process of step S38 is repeated, while YES
If it is, the process returns to step S23.

As described above, according to the present embodiment, the main control unit 1 determines whether or not the main controller 1 has read (YES at step S2 in FIG.
When the document is read by the image reading unit 20 and converted into image data and stored in the image memory 8, if a predetermined abnormal state occurs at this time (YES in step S5 or S6) (YES in step S21 in FIG. 6). , Step S23
Or, YES is determined in S25), and that effect is displayed (step S25).
9, S10, S15, S16, S31-S35 in FIG. 7)
Etc. Therefore, according to the present embodiment, an abnormal state in the image reading unit of the digital multifunction peripheral 20 can be notified, and the operability of the apparatus can be improved.

Here, when the read instruction signal is transmitted from the operation unit 5 of the digital multifunction peripheral 20 (NO in step S8, NO in step S14), the main control unit 1 generates the abnormal state. This is displayed on the display unit 4 of the digital multifunction peripheral 20 to notify the user (steps S10 and S16). On the other hand, when the reading instruction signal is transmitted from the client PC 30 (step S10).
(YES in step S8, YES in step S14), and notifies the client PC 30 that the abnormal state has occurred (steps S9 and S15). Therefore, according to the present embodiment, an abnormal state in the image reading apparatus can be selectively notified to the digital multifunction peripheral 20 or the client PC 30, and the operability of the apparatus can be improved.

In the digital multifunction device 20,
The occurrence of the abnormal state is indicated by the digital multifunction peripheral 20.
The operation unit 5 is a setting unit for setting whether to display on the display unit 4 for notification or to notify on the display unit 104 of the client PC 30 (step S31- in FIG. 7).
S35). Therefore, according to the present embodiment, since the notification location can be set, the user can recognize the abnormal state even when the user returns to his / her seat by operating the operation unit 5 of the digital multifunction peripheral 20. In such a case, when displayed on the operation unit 5 of the digital multifunction peripheral 20, there is a possibility that another user may perform an erroneous operation.

Further, in the feature according to the present embodiment, the abnormal state is determined when the number of originals to be scanned exceeds a predetermined number (YES in step S5) or when the image memory 8 overflows the memory (step S5). S
6 is YES), and in the abnormal state, based on an instruction signal for validating the image data stored in the storage means (YES in step S11, Y in step S17)
ES), the image data is stored and held as valid data in the storage unit (step S12, step S12).
18). Therefore, according to the present embodiment, an abnormal state in the image reading section of the digital multifunction peripheral 20 can be notified, and the image data can be stored and held in the image memory 8 when the image data is to be left as valid data.

Further, the above-mentioned abnormal state is caused by a document jam in the image reading apparatus (YE in step S23 or S25).
S), the reading by the image reading means is restarted based on the rereading process instruction signal for instructing to restart the reading by the image reading unit 2 (YES in step S38) (the process proceeds from step S38 to step S23). ). Therefore, according to the present embodiment, the document jam can be cleared and the reading can be easily restarted.

<Modification> In the above embodiment, an example of the digital multifunction device 20 has been described. However, the present invention is not limited to this, and can be widely applied to an image reading device having a scanner function.

In the above embodiment, the abnormal condition is notified by displaying it. However, the sound is notified by using a predetermined sound, or the voice synthesized by the voice synthesizing means is used for the contents of the abnormal condition. You may comprise so that it may output.

[0043]

As described above in detail, according to the image reading apparatus of the present invention, an image reading means for reading an original image, converting the image into image data and outputting the image data, and an external terminal connected to the external terminal An external connection unit that communicates with the communication unit; a storage unit that stores image data; and an abnormal state when the image data read and converted by the image reading unit is stored in the storage unit based on a predetermined reading instruction signal. And a notifying means for notifying the occurrence of the event. Therefore, according to the present invention, an abnormal state in the image reading apparatus can be notified, and the operability of the apparatus can be improved.

In the above image reading apparatus, when the reading instruction signal is transmitted from the operating section of the image reading apparatus, the notifying means displays on the display section of the image reading apparatus that the abnormal state has occurred. On the other hand, when the read instruction signal is transmitted from the external terminal device, the external terminal device is notified that the abnormal state has occurred. Therefore, according to the present invention, an abnormal state in the image reading device can be selectively notified to the image reading device or the external terminal device, and the operability of the device can be improved.

Instead, in the image reading apparatus, a setting for setting whether the occurrence of the abnormal state is displayed on the display unit of the image reading apparatus and notified or the external terminal apparatus is notified. Means are further provided. Therefore, according to the present invention, since the notification location can be set, the user can recognize the abnormal state even when the user returns to his / her seat by operating the operation unit of the image reading device. In such a case, when displayed on the operation unit of the image reading apparatus, there is a possibility that another user may perform an erroneous operation.

In the above image reading apparatus, the abnormal state is when the number of originals to be scanned exceeds a predetermined number or when the memory overflows in the storage unit. Based on an instruction signal for validating the image data stored in the
The image processing apparatus further includes control means for storing and holding the image data as valid data in the storage means. Therefore, according to the present invention, an abnormal state in the image reading apparatus can be notified, and the image data can be stored and held in the storage unit when the image data is to be left as valid data.

Instead, in the image reading apparatus, the abnormal state is a document jam in the image reading apparatus, and the abnormal state is determined based on a re-read processing instruction signal for instructing the image reading means to resume reading. ,
The image processing apparatus further includes control means for restarting reading by the image reading means. Therefore, according to the present invention, the document jam can be cleared and the reading can be easily restarted.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a LAN system including a digital multifunction device 20 which is a facsimile device with a copy, printer, and scanner function according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a client PC 30 of FIG.

FIG. 3 is a block diagram showing a configuration of the digital multifunction peripheral 20 of FIG.

FIG. 4 is a flowchart showing a first part of a memory overflow and page number over recovery process executed by the main control unit 1 of FIG. 3;

FIG. 5 is a flowchart showing a second part of the memory overflow and page number over recovery processing executed by the main control unit 1 of FIG. 3;

6 is a flowchart illustrating a first portion of a jam recovery process executed by the main control unit 1 of FIG. 3 when a document scan is instructed from the client PC 30. FIG.

7 is a flowchart showing a second part of the jam recovery process executed by the main control unit 1 in FIG. 3 when a document scan is instructed from the client PC 30. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main control part, 2 ... Image reading part, 4 ... Display part, 5 ... Operation part, 6 ... ROM, 7 ... RAM, 8 ... Image memory, 8a ... Memory box area, 9 ... Hard disk drive, 10 ... Fax modem Reference numeral 11: NCU, 12: LAN interface, 13: bus, 20: digital multifunction peripheral, 30, 30-1 to 30-N: client personal computer (client PC), 70: local area network (LAN).

Claims (5)

[Claims] An image reading unit that reads an original image, converts the image into image data, and outputs the image data; an external connection unit that is connected to an external terminal device and communicates with the external terminal device; and a storage unit that stores the image data. Notification means for notifying, when an abnormal state occurs when the image data read by the image reading means and storing the converted image data in the storage means based on a predetermined reading instruction signal, An image reading apparatus comprising: 2. The notifying unit, when the reading instruction signal is transmitted from an operation unit of the image reading device, displays and notifies on a display unit of the image reading device that the abnormal state has occurred. 2. The image reading device according to claim 1, wherein when the read instruction signal is transmitted from the external terminal device, the occurrence of the abnormal state is notified to the external terminal device. 3. A setting means for setting whether the occurrence of the abnormal state is displayed on the display unit of the image reading apparatus and notified or the external terminal apparatus is notified. The image reading device according to claim 1. 4. The abnormal state is when the number of originals to be scanned exceeds a predetermined number or when the memory means overflows in the memory. In the abnormal state, the image data stored in the memory means is stored. 4. The apparatus according to claim 1, further comprising control means for accumulating and holding the image data as valid data in the storage means based on an instruction signal for validating the image data. Image reading device. 5. The abnormal state is a document jam in the image reading device, and the reading by the image reading means is restarted based on a rereading processing instruction signal for instructing the reading by the image reading means to be restarted. 4. The image reading apparatus according to claim 1, further comprising a control unit configured to perform the control.