JP2002302283A - Image reading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image reading device capable of suppressing skew of documents in reading. SOLUTION: In reading the documents 20 loaded on a document block 21 while being fed by an ADF, a document presser 31 is lowered from a stand-by position K1 to a downward position K2, and the document presser 31 presses the documents 20 loaded on the document block 21. While the document presser 31 presses the documents 20, the uppermost one of the documents 20 is separated by a separating roller 32 and supplied, images of the documents 20 passing on a translucent plate 34 are read by an image pickup element 43. As a result, bowing of the documents 20 due to the own weight of the document presser 31 can be reduced, and the back end of the documents 20 does not run on a document guide 22. Therefore, the skew of the documents 20 in reading can be suppressed.

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 represented by a facsimile apparatus with a copying function, and more particularly, to an image reading apparatus having an automatic document reading section for reading a document while feeding the document.

[0002]

2. Description of the Related Art In recent years, a flatbed scanner (FBS) for reading a still original placed on a document placing plate and an automatic original reading section (ADF) for reading an original placed on a platen while feeding the original are provided. A facsimile machine with a copying function equipped with a copying function is becoming mainstream.

When reading a document with the ADF,
First, an original guide for regulating the width direction of the original is adjusted to the width of the original, and then the original is placed on the original platen. Next, when the start key is operated, the stepping motor is driven based on the detection signal from the document presence / absence sensor arranged opposite to the document table. Then, the separation roller is rotated, and the uppermost original is supplied while being separated one by one, and the original is read by the ADF.

[0004]

However, when the document is separated by the separation roller as described above, the separation roller is merely in contact with the leading end of the uppermost document.
Therefore, the force of the separation roller may not be uniformly applied to the document. In such a case, the original may bend and the rear end of the original may ride on an original guide that regulates the width direction of the original, and the original may be read obliquely by the ADF.

The present invention has been made in view of such a problem, and an object of the present invention is to provide an image reading apparatus capable of suppressing skew of a document during reading. .

[0006]

According to the first aspect of the present invention, there is provided an image reading apparatus having an automatic document reading section for reading a document placed on a document table while feeding the document. , A document holder for holding a document placed on a platen is provided.

According to a second aspect of the present invention, in the image reading apparatus according to the first aspect, a document detecting means for detecting the presence / absence of a document on a document table and a detection signal from the document detecting means. Control means for arranging the document press on the document.

According to a third aspect of the present invention, in the image reading apparatus according to the second aspect, a flatbed scanner for reading a still original is provided, and when the flatbed scanner is used, the control unit controls the original. At the retreat position.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which an image reading apparatus according to the present invention is embodied in a facsimile apparatus with a copying function will be described below with reference to the drawings.

As shown in FIG. 1, a facsimile apparatus 11 with a copying function includes a document placing section 12, a document feeding section 13,
A reading unit 14, a recording paper supply unit 15, a recording unit 16, and a recording paper discharge unit 17 are provided.

As shown in FIG. 1 and FIG.
Reference numeral 2 includes a document table 21 on which the document 20 is placed, a document guide 22 for regulating the width direction of the document 20 on the document table 21, and a document discharge table 23 for stocking the read document 20. Further, the original placing portion 12 includes a transparent original placing plate 24 for reading the original 20 in a stationary state, and a cover 2 that is openably and closably disposed on the original placing plate 24.
5 is provided. A document table 21, a document guide 22, and a document discharge table 23 are provided on the cover 25. Therefore, when the cover 25 is opened, the original table 21, the original guide 22, and the original discharge table 23
5 is opened and closed integrally. Further, the original placement unit 12
Is provided with a document presence / absence sensor 26 disposed opposite to the document table 21.
Is detected.

The document feeder 13 is configured to store the document 2 on the document table 21.
A document holder 31 that holds 0 from above, and a document holder 3
A separating roller 32 for separating the original 20 pressed by 1 from the top one by one, a plurality of feeding rollers 33 for feeding the separated original 20, and a light transmitting plate through which the original 20 passes over the upper surface. 34. The document holder 31 indicated by hatching in FIG. 3 has “B5 size” from the reference end.
Notches 31a to 31c are formed at positions corresponding to the width of "A4 size" or "B4 size". The document holder 31 is made of a conductive material. The document holder 31 is grounded via a metal part of the facsimile machine 11 with a copying function.

As shown in FIGS. 1 and 2, the document feeder 13 raises or lowers the jam sensor 35 disposed opposite to the conveyance path of the document 20 from the document table 21 and the document holder 31. And a motor 36. And
As shown in FIG. 2, the motor 36
From the standby position K1 shown by the solid line in the figure to the lower position K2 shown by the broken line or the upper position K3 shown by the dashed line.
Note that the document feeding unit 13 is separate from the cover 25 of the document placing unit 12, and the document feeding unit 1 is opened even when the cover 25 is opened and closed.
3 does not rotate.

As shown in FIG. 1 and FIG.
Is the original 20 or the original placing plate 2 passing over the light transmitting plate 34.
Light source 37 for irradiating light to stationary original 20 placed on
A first mirror 38 to a third mirror 40 for changing the optical path of the reflected light from the original 20; a light source 37 and a first mirror 38.
To a third mirror 40 (see FIG. 2). In addition, the reading unit 14 reads the image of the document 20 based on the condenser lens 42 that converges the light from the third mirror 40 and the light incident through the condenser lens 42, and reads the read image of the document 20. And an image pickup device (CCD) 43 for outputting.

As shown in FIG. 2, the moving mechanism 41 includes a pair of left and right large-diameter pulleys 44, 45, a pair of left and right small-diameter pulleys 46, 47, and a first mechanism mounted between the large-diameter pulleys 44, 45. A belt 48 and a second belt 49 mounted between the small-diameter pulleys 46 and 47 are provided. Further, the moving mechanism 41
Is a first carriage 50 connected to the first belt 48.
And the second carriage 51 connected to the second belt 49
And a step motor 52.

The diameters of the large-diameter pulleys 44, 45 are twice as large as the diameters of the small-diameter pulleys 46, 47. The large-diameter pulley 44 and the small-diameter pulley 46 on the left side are integrally rotatably connected on the same axis, and are operatively connected to a step motor 52. Further, the light source 37 and the first mirror 38 are supported on the first carriage 50, and the second mirror 39 and the third mirror 40 are supported on the second carriage 51.

When the large-diameter pulleys 44 and 45 and the small-diameter pulleys 46 and 47 are rotated by the step motor 52, the first carriage 50 and the second carriage 50 are driven via the first belt 48 and the second belt 49. 51 is moved. At this time, the first carriage 50 is moved at twice the moving speed of the second carriage 51. As a result, the first carriage 50 and the second carriage 51 are moved to the intermediate standby position P1, the first original reading position P2 located immediately below the light transmitting plate 34, and the original placing plate 24, as shown in FIG. And the start point P3 of the second document reading position, which is located immediately below the reference end 24a.

Further, as shown in FIGS. 1 and 2, the reading section 14 includes a cover opening / closing sensor 53 for detecting the open / close state of the cover 25 of the document placing section 12. The document placement unit 12, the document feeding unit 13, and the reading unit 14 constitute an automatic document reading unit (ADF).
0 and the second carriage 51 are moved to the first original reading position P2, and the original 20 passing through the light transmitting plate 34 is moved.
Is read.

On the other hand, a flatbed scanner (FBS) is constituted by the original placing section 12 and the reading section 14. Then, the first carriage 50 and the second carriage 5
1 is moved to the start point P3 of the second document reading position, that is, the home position of the flatbed scanner (FBS), and then moved toward the end point P4 and placed on the document placing plate 24. The image of the stationary document 20 is read.

As shown in FIG. 1, the recording paper supply unit 15
A plurality (two in the present embodiment) of recording paper cassettes 57 accommodating recording papers 56 of a predetermined size in a stacked state are provided. Further, the recording paper supply unit 15 is provided with each recording paper cassette 57.
A paper feed roller 58 that feeds the recording paper 56 therein one by one toward the recording unit 16 and a guide plate 59 that guides the feeding of the recording paper 56 are provided. The recording paper cassettes 57 accommodate recording papers 56 of different sizes.

The recording paper cassettes 57 are provided with recording paper size sensors 60a and 60b, respectively. When each recording paper cassette 57 is inserted into a predetermined position, these recording paper size sensors 60a and 60b output a detection signal indicating the size of the recording paper 56 stored in each recording paper cassette 57.

The recording unit 16 includes a photosensitive drum 68 having a photoconductive film on the outer peripheral surface, a charger 69 for uniformly charging the photoconductive film of the photoconductive drum 68 to a predetermined potential, and a recording device 16 on the photoconductive drum 68. An exposure unit 70 for forming an electrostatic latent image and a developing unit 71 for supplying toner to the electrostatic latent image on the photosensitive drum 68 and developing the electrostatic latent image are provided. Further, the recording unit 16 includes a feeding roller 72 for feeding the recording paper 56 to the photosensitive drum 68, and a toner image on the photosensitive drum 68.
The image forming apparatus includes a transfer device 73 that transfers the toner image onto the recording paper 56 from above, and a heat fixing device 74 that heats and fixes the toner image on the recording paper 56.

The recording paper discharge section 17 is provided for recording the recording paper 5.
The recording paper 56 includes a paper discharge roller 77 that discharges the recording paper 6, a guide plate 78 that guides the discharge of the recording paper 56, and a paper discharge tray 79 that stores the discharged recording paper 56. In the recording paper supply unit 15, the recording unit 16, and the recording paper discharge unit 17, for example, the paper feeding roller 58, the feeding roller 72, the photosensitive drum 6
8, the developing device 71, the paper discharge roller 77, and the like are rotated by a rotational driving force from a step motor (not shown).

Next, the electrical configuration of the facsimile machine 11 with the copying function configured as described above will be described with reference to FIG. As shown in FIG. 4, a facsimile machine 11 with a copying function includes an MPU 81, a ROM 82, a RAM 8
3, document placement section 12, document feeding section 13, reading section 14, recording section 16, operation section 84, display section 85, image memory 86,
It comprises a codec 87, a modem 88 and an NCU 89, each of which is connected via a bus 90.

The MPU 81 controls each unit constituting the facsimile machine 11 with a copying function. The ROM 82 stores various programs for controlling the facsimile machine 11 with a copying function. The RAM 83 stores various information related to the facsimile machine 11 with a copying function.

The document placement unit 12 has a document presence / absence sensor 26, detects the presence / absence of the document 20 on the document table 21, and outputs a detection signal to the MPU 81. The document feeding unit 13
A jam sensor 35 and a motor 36 are provided. The jam sensor 35 detects whether a jam has occurred in the conveyance path of the document 20 from the document table 21 and outputs a detection signal to the MPU 81. Based on the drive signal from the MPU 81, the motor 36 moves the original presser 31 from the standby position K1 shown by a solid line in FIG.
It is arranged at the upper position K3 shown by the dotted line.

The reading section 14 reads an image of the original 20 via the light transmitting plate 34 or the original placing plate 24. The reading unit 14 includes an image sensor 43, a step motor 52, and a cover open / close sensor 53. The image sensor 43 is a document 2
The image of 0 is read one line at a time, the image data of the read image is binarized into black and white, and the binarized image data of one line is sequentially output to the codec 87. The step motor 52 rotates the separation roller 32 and the plurality of feeding rollers 33 in addition to the pulleys 44 to 47. The cover open / close sensor 53 detects the open / closed state of the cover 25 and outputs a detection signal to the MPU 81.

The recording unit 16 is composed of an electrophotographic printer, and records received image data on a recording paper 56 in a facsimile operation and image data read by the reading unit 14 in a copy operation.

The operation unit 84 includes a FAX / copy key 84
a, abbreviated / phonebook key 84b, one-touch key 84c,
Various operation keys such as a numeric keypad (including * and # keys) 84d and a start key 84e are provided. The FAX / copy key 84a is used to set a FAX mode or a copy mode. The abbreviated / telephone book key 84b is used to enter the telephone number (FA
An X number (including an X number) is designated by a short number (for example, 001), and a telephone number of a destination registered in the telephone directory in advance is searched to register a registration number (for example, 0).
001). The one-touch key 84c is used for designating a telephone number of the other party registered in the one-touch dial in advance by a one-touch number (for example, 01). The ten-key 84d is used to input the telephone number of the destination or the number of copies. The start key 84e is for starting a reading operation of the document 20.

A display section 85 such as an LCD displays various information such as the operation state of the facsimile machine 11 with a copying function. The image memory 86 stores image data of an image read by the reading unit 14 and encoded by the codec 87,
The received image data is temporarily stored. Codec 87
MH, MR, MM
The data is compressed and encoded by the R, JBIG method or the like. The codec 87 decodes the image data read from the image memory 86.

The modem 88 is based on ITU (International Telecommunication Union) -T Recommendation T.30. 30 based on a facsimile transmission control procedure according to V.30. 17, V.I. 27ter, V.A. Modulation of the transmission data and demodulation of the reception data according to 29 or the like. The NCU 89 has a function of closing and opening the telephone line L, a function of transmitting a dial signal corresponding to the telephone number of the other party, and a function of detecting an incoming call.

Next, a facsimile machine 11 with a copying function
The operation when reading the original 20 with the ADF will be described with reference to the flowchart shown in FIG.
This operation is executed under the control of the MPU 81 based on the program stored in the ROM 82 (the same applies to the operation of the facsimile machine 11 with a copying function). In a standby state of the facsimile machine 11 with a copying function, the document presser 31 is located at a standby position K1 indicated by a solid line in FIG.

After the original guide 22 is adjusted to the width of "A4 size" and the original 20 of "A4 size" is placed on the original platen 21, in step S1 shown in FIG.
Based on the detection signal from the document presence sensor 26, it is determined that "document is present" and the process proceeds to step S2.

In step S2, the process waits until the start key 84e is operated. And the start key 84e
Is operated, the process proceeds to step S3. Step S
In 3, a drive signal is output to the motor 36 based on the operation of the start key 84 e to rotate the motor 36 forward,
The document holder 31 is lowered from a standby position K1 shown by a solid line in FIG. 2 to a lower position K2 shown by a broken line in FIG. That is,
Even if the document 20 is placed on the platen 21, the start key 8
Until 4e is operated, the document holder 31 is not lowered. As a result, even after the original 20 is placed on the original platen 21, the additional original can be placed on the original platen 21 until the start key 84e is operated.

In step S4, the process waits until a predetermined time elapses, in other words, until the document holder 31 is lowered from the standby position K1 to the lower position K2. When the predetermined time has elapsed, the process proceeds to step S5. Specifically, as shown in FIG. 3, when a predetermined time has elapsed and the document holder 31 is lowered to the lower position K2, the document guide 22 adjusted to the width of “A4 size” is moved to the document holder 31. Is inserted into the notch 31b corresponding to the width of "A4 size" formed in the above. As a result, the document 2 on the platen 21
0 is pressed from above by the document presser 31.

In step S5, while the original 20 is being pressed by the original holder 31, the stepping motor 52 is controlled to rotate the separation roller 32 and the plurality of feeding rollers 33 to separate the uppermost original 20 by one sheet. Supply.

In step S6, based on the detection signal from the jam sensor 35, it is determined whether or not a jam has occurred in the conveyance path of the document 20 from the document table 21. If a jam has occurred, the process proceeds to step S10.
On the other hand, if no jam has occurred, the process proceeds to step S7.

In step S7, the first carriage 50 and the second carriage 51 are controlled by controlling the step motor 52.
Is moved to the first document reading position P <b> 2, and the image of the document 20 passing over the light transmitting plate 34 is read by the image sensor 43.
Then, the image data of the read image is
After encoding in step 7, the image data is stored in the image memory 86.

If it is determined in step S1 that "document is present" based on the detection signal from the document presence sensor 26, the stepper motor 52 is controlled to move the first carriage 50 and the second carriage 51 to the first document. Reading position P
2 may be configured to be moved and arranged. Then, in step S7, after the image of the document 20 passing over the light transmitting plate 34 is read by the image sensor 43 and encoded, the image memory 86
May be stored. With this configuration,
In parallel with the document holder 31 being lowered to the lower position K2, the first carriage 50 and the second carriage 51 are moved to the first document reading position P2. Therefore, manuscript 2
The reading of 0 can be completed quickly.

In step S8, the presence or absence of the document 20 on the document table 21 is determined based on the detection signal from the document presence sensor 26. If the original 20 is on the platen 21,
The process proceeds to step S5 to execute the reading operation of the original 20 of the next page. On the other hand, if there is no original 20, the process proceeds to step S9.

In step S9, a drive signal is output to the motor 36, and the motor 36 is rotated in the reverse direction.
Is raised from the lower position K2 indicated by the dashed line in FIG. 2 to the standby position K1 indicated by the solid line, and this processing ends.

If it is determined in step S6 that a jam has occurred in the conveyance path of the document 20, a message indicating that a jam has occurred is generated in step S10, for example, "Remove the jammed document and place it on the platen. "Please reset." Is displayed on the display unit 85, and the routine goes to Step S9. Then, in step S9, the document holder 31 is raised to the standby position K1. As a result, jammed manuscript 2
After removing 0, the document 20 can be easily placed on the document table 21.

Next, a facsimile machine 11 with a copying function
The operation when reading the still original 20 with the FBS will be described with reference to the flowchart shown in FIG. When the cover 25 of the document placement unit 12 is opened, in step S21 shown in FIG. 6, it is determined that the cover is open based on the detection signal from the cover open / close sensor 53, and the process proceeds to step S22.

In step S22, a drive signal is output to the motor 36, and the motor 36 is rotated in the reverse direction.
2 is raised from the standby position K1 shown by the solid line in FIG. 2 to the upper position K3 shown by the dashed line. As a result, as the cover 25 is opened, the cover 25
Never touch.

In step S23, after the original 20 is placed on the original placing plate 24, the process stands by until the start key 84e is operated. Then, when the start key 84e is operated, the flow shifts to step S24.

In step S24, the step motor 52
To control the first carriage 50 and the second carriage 5
After moving 1 to the start point P3 of the second document reading position,
The image is moved toward the end point P4, and the image of the stationary original 20 placed on the original placing plate 24 is read by the image sensor 43. Then, the image data of the read image is encoded by the codec 87 and stored in the image memory 86.

In step S25, the process waits until the cover 25 is opened and closed. Specifically, after the cover 25 is opened and the read original 20 is removed from the original placing plate 24, the process stands by until the cover 25 is closed. Alternatively, after the cover 25 is opened and the read original 20 is removed from the original placing plate 24, and after the next page original 20 is placed on the original placing plate 24, the apparatus stands by until the cover 25 is closed. . Then, when the cover 25 is closed, based on the detection signal from the cover opening / closing sensor 53, it is determined that the cover is closed, and the process proceeds to step S26.

In step S26, the process waits until a predetermined time (for example, 10 seconds) elapses after it is determined that the cover is closed. Then, when a predetermined time has elapsed, “No next document” is displayed.
And the process moves to step S27. On the other hand, if the start key 84e is operated before the predetermined time has elapsed,
It is determined that "the next document exists", and the process shifts from step S23 to step S24 to execute the reading operation of the document 20 of the next page.

In step S27, a drive signal is output to the motor 36 to rotate the motor 36 forward,
1 is lowered from the upper position K3 shown by the dashed line in FIG. 2 to the standby position K1 shown by the solid line, and this processing ends.

As described above, according to the present embodiment, the following operations and effects can be obtained. (1) When the original 20 placed on the original table 21 is read by the ADF while being fed, the original holder 31 is lowered from the standby position K1 to the lower position K2, and the original holder 3 is moved.
1, the document 20 on the document table 21 is pressed. And
With the original 20 held down by the original presser 31, the uppermost original 20 is separated and supplied by a separation roller 32, and the image of the original 20 passing over the light transmitting plate 34 is read by the image sensor 43. As a result, due to the weight of the document holder 31,
The bending of the document 20 can be suppressed, and the rear end of the document 20 does not run on the document guide 22. Therefore, the skew of the document 20 at the time of reading can be suppressed.

(2) In addition, when the facsimile machine 11 with a copying function is installed near a window, the original 20 is blown off by the wind due to the weight of the original holder 31 even when the window is opened. This can be suppressed.

(3) Further, when the start key 84e is operated after the document 20 is placed on the document table 21, the document holder 31 is arranged at the lower position K2 where the document 20 is pressed. That is, even if the document 20 is placed on the document table 21,
Until the start key 84e is operated, the document holding 3
1 has not been lowered. As a result, the document 20 is placed on the platen 2
Even after the original has been placed, the additional original can be placed on the platen 21 until the start key 84e is operated.

(4) When the cover 25 is opened as in the case where the document 20 is read by the FBS, the document presser 31 is moved from the standby position K1 to the upper position K3 based on the detection signal from the cover open / close sensor 53. Is rising. In other words, when using the FBS, the original presser 31
Is disposed at an upper position K3, that is, a retracted position that does not contact the cover 25. As a result, when the cover 25 is opened, the cover 25 does not contact the document holder 31.

(5) Facsimile machine with copy function 11
In the standby state, the document presser 31 is arranged at the standby position K1, which is an intermediate position between the lower position K2 and the upper position K3. As a result, when the ADF is used, the standby position K1
From the standby position K1 to the upper position K3 when the FBS is used.

(6) Cutouts 31a to 31c are formed in the document holder 31 at positions corresponding to the width of "B5 size", "A4 size" or "B4 size" from the reference end. As a result, when the document holder 31 is disposed at the lower position K2, the document guides 22 adjusted to the width of each size are set.
Are inserted into the notches 31b corresponding to the widths of the respective sizes formed on the document holder 31. In other words, engagement of the document guide 22 is allowed in a state where the document presser 31 is disposed at the lower position K2 for pressing the document 20. Therefore,
Documents 20 of a standard size such as "B5 size", "A4 size" or "B4 size" can be handled.

(7) The document holder 31 is made of a conductive material. Therefore, the static electricity charged on the document 20 can be removed via the document press 31 by the contact between the document press 31 and the document 20. Therefore, double feeding of the document 20 due to static electricity can be prevented.

The above embodiment can be embodied with the following modifications. The original feeding unit 13 is integrated with the cover 25 of the original placing unit 12, and the original feeding unit 1 is added to the original table 21, the original guide 22, and the original discharge table 23 with the opening and closing of the cover 25.
3 may be configured to be opened and closed integrally with the cover 25. Then, when the cover 25 is opened, the document presser 31 based on the detection signal from the cover opening / closing sensor 53
Is lowered from the standby position K1 to the lower position K2. With such a configuration, the facsimile machine 11 with a copying function
Even if the back surface of the document is a wall or the like, the document presser 31 does not contact the wall or the like as the cover 25 is opened.

In step S1 shown in FIG. 5, based on the detection signal from the document presence sensor 26, "document present"
When the determination is made, a drive signal may be output to the motor 36 to lower the document holder 31 from the standby position K1 to the lower position K2.

In the case where the document holder 31 is lowered to the lower position K2 based on the detection signal from the document presence sensor 26, it is preferable to use a transparent document holder 31. That is, it is assumed that the image of the document 20 is read by the ADF and transmitted by facsimile. In such a case,
When the original 20 is placed on the original platen 21 with the surface on which the image such as the fax number of the other party is recorded facing up, the original presser 31 is lowered to the lower position K2 based on the detection signal from the original sensor 26. Is done. And manuscript 20
Is pressed by the document holder 31, the fax number of the other party is input from the numeric keypad 84d. Therefore, with the transparent document holder 31, the user can input the fax number of the destination recorded on the document 20 while visually observing the fax number.

A brush-like document holder 31 may be used. With this configuration, when the document presser 31 is lowered to the lower position K2, a portion corresponding to the document guide 22 in the bristle portion of the document presser 31 is pushed up. Therefore, it is possible to cope with a case where the document guide 22 is adjusted to the width of the document 20 having an irregular size. Moreover, if the bristle portion is made of a conductive material, the static electricity charged on the document 20 can be removed.

The document holder 31 may be raised or lowered manually. Further, technical ideas grasped from the above embodiment will be described below together with their effects.

[1] In the image reading apparatus according to the first aspect, starting means for starting reading of a document in the automatic document reading section, and a document presser is arranged on the document based on an operation of the starting means. An image reading device comprising a control unit.
With this configuration, even after the original is placed on the platen, the additional original can be placed on the platen until the start unit is operated.

[2] In the image reading apparatus according to the second aspect, a document placing plate for reading a document in a stationary state, and a cover which is opened and closed when placing the document on the document placing plate. An image reading apparatus comprising: cover detection means for detecting whether the cover is opened or closed; and control means for arranging the document press at a position not in contact with the cover based on a detection signal from the cover detection means. With this configuration, the cover does not come into contact with the document holder when the cover is opened.

[3] Claims 1 to 3, [1],
In the image reading device according to any one of [2],
An image reading apparatus comprising: a regulating unit for regulating a width direction of a document on a platen; and a document holding unit provided with a permitting portion for permitting engagement of the regulating unit in a state of being placed on the document. With this configuration, it is possible to handle documents having different widths.

[4] Claims 1 to 3, [1] to [3]
[3] In the image reading device according to any one of [3],
An image reading device in which the document holder is made of a conductive material.
With this configuration, double feeding of documents due to static electricity can be prevented.

[0066]

Since the present invention is configured as described above, it has the following effects. According to the invention described in any one of the first to third aspects, it is possible to suppress the skew of the document at the time of reading.

[Brief description of the drawings]

FIG. 1 is a sectional view of a facsimile apparatus with a copying function.

FIG. 2 is a partially enlarged cross-sectional view of a facsimile apparatus with a copying function.

FIG. 3 is a schematic plan view of a facsimile apparatus with a copying function.

FIG. 4 is a block diagram showing a facsimile apparatus with a copying function.

FIG. 5 is a flowchart illustrating an operation when an original is read by the ADF.

FIG. 6 is a flowchart illustrating an operation when reading a document using the FBS.

[Explanation of symbols]

11: facsimile machine with a copying function as an image reading device; 12: a document placement unit constituting an automatic document reading unit and a flatbed scanner; 13: a document feeding unit constituting an automatic document reading unit; 14: automatic document reading And a reading unit constituting a flatbed scanner, 20: manuscript, 21: manuscript table, 22: manuscript guide as regulating means, 24: manuscript placing plate, 25 ... cover, 26: manuscript presence / absence sensor as manuscript detecting means .., 31... Original press, 31 a... Notch as an allowable portion, 31 b... Notch as an allowable portion, 31 c.
Notch as an allowance, 36... Motor constituting control means, 53... Cover open / close sensor as cover detection means,
81: MPU configuring the control means, 82: ROM configuring the control means, 83: RAM configuring the control means, 84
e: Start key as starting means.

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 3F048 AA04 AB02 BA05 BA12 BB02 CA09 CB03 CC03 DA04 EA15 EB15 EB16 3F343 FA03 FB03 FC13 GA02 GB01 GC01 GD01 HA33 JD03 JD21 JD34 JD35 KB03 5C062 AA02 AA05 AB03 AC11 AC11 LA18 XA01

Claims (3)

[Claims] 1. An image reading apparatus having an automatic document reading section for reading a document placed on a document table while feeding the document, the document reading apparatus including a document holder for pressing a document placed on the document table. 2. An image reading apparatus according to claim 1, wherein: an original detecting means for detecting the presence of an original on an original plate;
An image reading apparatus comprising: control means for arranging a document press on a document based on a detection signal from the document detection means. 3. The image reading apparatus according to claim 2, wherein
An image reading apparatus comprising a flatbed scanner for reading a still original, wherein the control means arranges the original presser at a retracted position when the flatbed scanner is used.