JP2522526B2 - Image data transmission device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image data transmission device such as a telephone having a facsimile function, and to an image data transmission device having an image reading device for optically reading an image.

2. Description of the Related Art In a facsimile apparatus, an original image inserted by an operator into an original insertion opening formed in the apparatus main body is read, and the read image data is transmitted to another facsimile apparatus. The document insertion port is formed in the vicinity of a reading unit such as a one-dimensional contact image sensor provided inside the apparatus main body, and its size corresponds to the length of the contact image sensor.

In such a facsimile apparatus, a large original that cannot be read by the reading unit, that is, a large original that cannot be inserted into the apparatus main body through the original insertion port or a book-like original such as a book is read. ,
And no transmission can take place.

A typical prior art for solving such a problem is disclosed in JP-A-62-30461. In the above-mentioned prior art, the reading device including the reading means is detached from the main body of the device so that it can be manually operated, and the image information read by the manual operation is transmitted to the facsimile device of the communication destination. As a result, it is possible to read and transmit an image of an original having a relatively large size and a booklet-like original such as a book.

FIG. 12 is a cross-sectional view showing a configuration around the reading device 44 in a state where the image data transmitting device of such a prior art is mounted on the device main body 42. The reading device 44 includes a contact image sensor 50 and a driven roller 51.

When the reading device 44 is attached to the device main body 42,
As shown in FIG. 12, the driven roller 51 is in pressure contact with the conveying roller 56 provided in the main body 42 of the apparatus via the document 57. Further, a feeding roller 53 is provided at a position facing the apparatus main body 42 side of the image sensor 50.

An endless belt 72 is wound around the rotating shaft of the feeding roller 53 and the rotating shaft of the conveying roller 56. Further, the rotation shaft of the feeding roller 53 and the output shaft of the motor 73 are
An endless belt 74 is wound around, whereby the power of the motor 73 is transmitted to the feeding roller 53 via the belt 74 and further to the conveying roller 56 via the belt 72. In this way, while the document 57 is transported in the direction of arrow 68 by the feeding roller 53 and the transport roller 56, the image of the document is read by the image sensor 50.

Further, when reading an image of a large-sized original or a booklet-like original described above, such a reading device 44 is used.
By removing it from the device body 42 and manually
Is configured to operate 44.

Problem to be Solved by the Invention Normally, the operation speed in reading an original image is determined by a CCD (Charge Coupled Device) that constitutes a contact image sensor.
The constant speed is determined by the relationship between the charge accumulation time and the charge extraction time. Therefore, when the reading device 44 is manually operated to read a document image, the reading device 44 must be operated at the constant speed. Such an operation is very difficult and requires a long skill. Therefore, normally, a normal image cannot be read, for example, the original image is expanded or contracted.

An object of the present invention is to solve the above technical problems, improve the operability when an operator scans the image reading device with his / her hand attached to the image reading device capable of self-propelled scanning, and obtains a normal document image. It is an object of the present invention to provide an image data transmission device capable of reading.

Means for Solving the Problems The present invention provides a control for generating a drive signal in an image data transmission device including an image reading device for reading a document image and a communication device for receiving and transmitting image data from the image reading device. And a drive unit provided in the image reading apparatus and intermittently driven by a drive signal from the control circuit, and a drive roller provided in the image reading apparatus, contacting the document surface, and rotationally driven by the drive unit. A rotation amount detecting means for detecting a rotation speed of the drive roller, and a first of the drive roller obtained based on the drive signal.
Comparison means for comparing the rotation speed of the drive roller with the second rotation speed of the drive roller detected by the rotation amount detection means, and as a result of the comparison by the comparison means, the first rotation speed of the drive roller.
Of the image data from the image reading device to the communication device when the difference between the rotation speed and the second rotation speed is larger than a predetermined value. The image data transmission device is characterized in that it is performed in synchronization with a drive signal.

The present invention also relates to an image data transmission device having an image reading device for reading an original image and a communication device for taking in and transmitting image data from the image reading device, a control circuit for generating a drive signal, and an image reading device. Drive means provided on the image reading apparatus and intermittently driven by a drive signal from the control circuit, a drive roller provided on the image reading apparatus, contacting the document surface, and rotationally driven by the drive means; A rotation amount detecting means for detecting a rotation speed, and a first drive roller obtained based on the drive signal.
Comparison means for comparing the rotation speed of the drive roller with the second rotation speed of the drive roller detected by the rotation amount detection means, and as a result of the comparison by the comparison means, the first rotation speed of the drive roller.
Switching means for switching to the first side when the difference between the rotation speed of the second rotation speed and the second rotation speed is larger than a predetermined value, and to the second side when the difference is smaller than the predetermined value. When the means is on the first side, in synchronization with the signal from the rotation amount detecting means, and when on the second side, in synchronization with the drive signal from the control circuit, the image reading device to the communication device The image data transmission device is characterized in that the image data is taken in.

The present invention also relates to an image data transmission device having an image reading device for reading an original image and a communication device for taking in and transmitting image data from the image reading device, a control circuit for generating a drive signal, and an image reading device. Drive means provided on the image reading apparatus and intermittently driven by a drive signal from the control circuit, a drive roller provided on the image reading apparatus, contacting the document surface, and rotationally driven by the drive means; A rotation amount detecting means for detecting a rotation speed, and a first drive roller obtained based on the drive signal.
Comparison means for comparing the rotation speed of the drive roller with the second rotation speed of the drive roller detected by the rotation amount detection means, and as a result of the comparison by the comparison means, the first rotation speed of the drive roller.
Of the image data from the image reading device to the communication device when the difference between the rotation speed and the second rotation speed is larger than a predetermined value. The image data transmission device is characterized in that it is performed in synchronization with the signal from the.

According to the present invention of claim 1 and claim 3, in an image data transmission device for capturing image data from an image reading device for reading a document image into a communication device and transmitting the image data, the image reading device includes a document surface. Is provided with a drive roller that is in contact with the drive roller. The drive roller is intermittently driven by the drive means in response to a drive signal provided from the control circuit. Thus, the image reading device self-propels the original image on the original surface as described above. During this self-propelled scanning, the operator puts his hand on the image reading device, and the scanning speed of the image reading device may be increased or decreased depending on how the force of this hand is applied to the image reading device. There is a possibility that it may fluctuate, and it may be difficult to read the original image accurately. To solve this problem, the comparison means is the first of the drive rollers which is obtained based on the drive signal. The rotation speed and the second rotation speed obtained by detecting the actual rotation speed of the drive roller by the rotation amount detecting means are compared. As a result of this comparison, when the difference between the two speeds is larger than a predetermined value, A notification operation is performed by the notification means in order to display that it is difficult to read the original image accurately. The operator, to stop this notification operation,
The scanning speed of the image reading device can be adjusted by adjusting the hand attached to the image reading device. In this way, the operator can always scan the image reading device at the optimum speed at which the original image can be accurately read. The image data thus obtained from the image reading device is taken into the communication device in synchronization with the drive signal or in synchronization with the drive signal from the rotation amount detecting means. Thus, the image reading device uses, for example, a CCD (charge storage device),
Even if the charge accumulation time and charge extraction time of the CCD are relatively long, the accurate reading operation can be performed as described above.

According to the present invention of claim 2, as a result of the comparison by the comparison means, the actual second rotation speed detected by the rotation amount detection means is predetermined as compared with the first rotation speed of the drive roller by the drive signal. When the value is larger or smaller than the value, the switching means is switched to the first side and the image from the image reading device to the communication device is synchronized with the signal corresponding to the actual rotation speed of the drive roller from the rotation amount detection means. Data is taken in so that the original image can be accurately read and taken in by the communication device. Further, the first rotation speed and the second rotation speed are close to each other, and when the difference between the first rotation speed and the second rotation speed is smaller than a predetermined value, the switching means switches to the second side. Thus, the image data is taken in from the image reading device to the communication device in synchronization with the drive signal from the control circuit, and the original image can be read accurately.

First Embodiment FIG. 1 is a perspective view showing the appearance of a telephone 1 which is an image data transmission device according to a first embodiment of the present invention. The telephone 1 is also configured to have a facsimile function, and is configured to include a device body 2 which is a communication device, a handset 3, and the like. An image reading device (hereinafter, referred to as a “reading device”) 4 for reading a document is detachably mounted on the apparatus main body 2, and a start switch 5 for instructing the start of reading the document is provided on an upper portion thereof. Is provided.
When the reading device 4 is attached to the device main body 2, an insertion opening 6 for inserting a document is formed in association with the reading device 4.

Further, in the apparatus main body 2, an operation panel 7 is provided in the vicinity of the insertion port 6 so as to be angularly displaceable around an axis line whose one end crosses the document insertion direction, that is, an axis line substantially parallel to the longitudinal direction of the insertion port 6. Is installed. The operation panel 7 is provided with a numerical key group 8 for selecting a dial number and a functional key group 9 for designating various functions.

FIG. 2 is a perspective view showing a state in which the reading device 4 is removed from the device main body 2. The reading device 4 is provided with a one-dimensional contact type image sensor (hereinafter referred to as “image sensor”) 10, and also with a drive roller 11 described later.

In the mounting portion 12 on which the reading device 4 of the device body 2 is mounted,
A feeding roller 13 for feeding a document is provided.
A document detection sensor 14 for detecting the insertion of a document is provided on the operation panel 7 side of the feeding roller 13, that is, on the upstream side of the document conveyance direction (the arrow A1 direction in the second illustration).
Further, a detection sensor 15 that detects that the reading device 4 is attached / detached to / from the apparatus main body 2 is arranged near one end of the attachment portion 12.

On the bottom surface of the mounting portion 12, the transport roller 16 is arranged at a portion facing the driving roller 11 in a state where the reading device 4 is mounted on the mounting portion 12. The carrying roller 16 is rotated in conjunction with the feeding roller 13 as described later.

Further, in the telephone 1, when image data is recorded at the time of receiving the image data, the thermosensitive recording paper 22 on which the image is recorded is changed from the lower side of the operation panel 7 to the second
The sheet is conveyed in the direction of arrow A2 in the figure and discharged outside the apparatus main body 2.

FIG. 3 is a vertical sectional view showing a simplified configuration of the telephone 1. A rotary encoder 19 which is a rotation amount detecting means is provided in association with a driving roller 11 driven by a pulse motor described later, and its output is given to an electric circuit section 20 housed in the apparatus main body 2. As a result, when the reading device 4 is used by being removed from the device main body 2, the number of rotations of the driving roller 11 is measured and the reading position of the image sensor 10 is detected.

A platen 24 for transporting the thermal recording paper 22 supplied from the recording paper roll 21 in the direction of the arrow 23 is arranged in the apparatus main body 2 near the end opposite to the insertion port 6 of the operation panel 7. It is set up. During image recording, the platen 24 is angularly displaced in the direction of arrow 25 by a pulse motor (not shown) or the like. In relation to the platen 24, a thermal head 26 including a plurality of heating resistors arranged in a dot shape along the longitudinal direction of the platen 24 is arranged.

Recording of image information on the thermal recording paper 22 is performed by the platen 24 being angularly displaced in the direction of arrow 25, and the thermal head 26 being driven to generate heat corresponding to the image to be recorded.

When the facsimile key function is selected by operating the function key group 9 in the telephone 1, the operation panel 7 is angularly displaced in the direction of the arrow 27 by the operator, and is supported at a position shown by a broken line in FIG. To be done. In such a state, a plurality of documents 17 can be placed on the operation panel 7, and the operation panel 7 can function as a document stacker for stocking the documents 17. The plurality of originals 17 placed on the operation panel 7 are guided one by one from the insertion opening 6 to the vicinity of the image sensor 10. This original document 17 is fed by the feeding roller 13 which is rotationally driven in conjunction with the driving roller 11 and the conveying roller 16 as described later, and is conveyed in the arrow 28 direction at a constant speed by the driving roller 11 and the conveying roller. Meanwhile, the original image is read.

FIG. 4 is a sectional view showing a configuration around the reading device 4 when the reading device 4 is attached to the device main body 2. The reading device 4 includes an image sensor 10, a pulse motor 33 that is a driving unit, gears 34, 35 and 36, a driving roller 11, and a rotary encoder 19. A gear 34 is connected to the output shaft of the pulse motor 33. This pulse motor 33
Is driven by the drive signal from the electric circuit section 20 described above.

The gear 34 meshes with the gear 35. Also drive roller 11
A gear 36 is coaxially fixed to the rotary shaft 37 of the. The gear 36 meshes with the gear 35, whereby the power of the pulse motor 33 is transmitted to the drive roller 11 via the gears 34, 35, 36.

Therefore, when the pulse motor 33 is rotated in the direction of arrow 80, the gears 35 and 36 are rotated in the directions of arrow 81 and 82, respectively. The drive roller 11 and the transport roller 16 provided in the apparatus main body 2 are pressed against each other via the original document 17, and the drive roller 11
When 11 is rotated in the direction of arrow 82, the document 17 is transported in the direction of arrow 28 and the transport roller 16 is rotated in the direction of arrow 83.

An endless belt 32 is wound around the rotating shaft of the carrying roller 16 and the rotating shaft of the feeding roller 13 described above.
When the conveying roller 16 is rotated in the direction of arrow 83, this rotation is transmitted to the feeding roller 13 via the belt 32, and the feeding roller 13 is rotated.
13 is rotationally driven in the direction of arrow 84.

As described above, in the telephone 1, when the reading device 4 is mounted on the device main body 2 and used, the document 17 is given a conveying force in the direction of the arrow 28 from the lower surface of FIG. 4 by the feeding roller 13, and A driving force in the direction of arrow 28 is given by the driving roller 11 from the upper surface of FIG. Therefore, manuscript 17
Since a conveying force in the direction of arrow 28 is applied to both sides of the sheet, even when a so-called carrier sheet or the like is used, paper jam does not occur and reliable conveying can be performed. Moreover, as shown in FIG. 4, the feeding roller 13 is configured to rotate in conjunction with the driving roller 11, so that a pulse motor or the like for rotationally driving the feeding roller 13 is not needed Is simplified.

FIG. 5 is a cross-sectional view showing the configuration of the reading device 4 when the reading device 4 is detached from the device body 2 and manually operated.
Scan an image of a document having a size larger than the above-described insertion slot 6 and a document 17a in the form of a booklet such as a book,
When the image data is to be transmitted, the reading device 4
Is removed from the apparatus main body 2 and manually operated. Even in such a case, as described above, the pulse motor 33 is rotationally driven by the drive signal from the electric circuit unit 20 described above. As a result, the drive roller 11 is rotationally driven in the direction of arrow 82. Therefore, the reading device 4 is generally self-propelled in the direction indicated by the arrow 39. Therefore, the user can operate the reading device 4 on the original 17a at a constant speed V by simply holding the reading device 4 lightly. Therefore, the deterioration of the operability of the reading device 4 as described in connection with the related art is prevented, and the reading device 4 can be easily operated at a constant optimum operating speed V determined by the charge accumulation time and charge extraction time of the CCD. Manual 17a
The image of can be read accurately.

FIG. 6 is a block diagram showing a simplified configuration of the reading device 4 of the telephone 1. The rotary encoder 19 mentioned above
Is, for example, a disk-shaped, slit slit plate 30 having a through hole formed in the circumferential direction, and a detector 31 realized by a photocoupler including a light emitting element and a light receiving element.
The rotary encoder 19 outputs a pulse signal B synchronized with the rotation of the drive roller 11. This pulse signal B is used when the reading device 4 is mounted on the device main body 2 and when the reading device 4 is detached from the device main body 2 and is used, and the reading device 4 is operated at a predetermined optimum operating speed V. If so, the signal has the same waveform as the drive signal A for driving the pulse motor 33 output from the electric circuit section 20.

The drive signal A from the electric circuit section 20 is given to the pulse motor 33 and also to the comparator 38 and the image sensor 10 which are comparison means. The image sensor 10
The original image of one line is read in synchronization with the pulse of the drive signal A. The read document image is sent to the electric circuit unit 20 as line image data, subjected to signal processing such as data compression and modulation, and sent to the telephone line.

The pulse signal B from the rotary encoder 19 described above is also applied to the comparator 38. In the comparator 38, the control signal A
And the pulse signal B are compared with each other, and a signal C that becomes high level is output to the notification circuit 40 when the difference between the phase of the control signal A and the phase of the pulse signal B is larger than a predetermined constant value. . The notification circuit 40 includes, for example, a speaker and is activated when the signal C is at high level. As a result, when the difference between the operation speed of the reading device 4 and the optimum operation speed V for reading the original image exceeds a certain value, the user recognizes that by the notification sound output from the notification circuit 40. can do.

For example, as shown in FIG. 7, when the operating speed of the reading device 4 becomes slower than the optimum operating speed V of the reading device 4 at time t1, the pulse motor shown in FIG.
The drive signal A of 33 does not change and is always output at the frequency representing the optimum operating speed V. However, since the transport roller 11 is rotationally driven in association with the operation speed of the reading device 4, the frequency of the pulse signal B becomes low at time t1. Since the comparator 38 detects the phase difference between the drive signal A and the pulse signal B, the signal C rises at time t1, and the notification circuit 40 notifies that the operation speed of the reading device 4 is not the optimum operation speed V. To do.

This allows the operator to read the reading device 4 at the optimum operating speed V.
Can be operated, and the operability of the telephone 1 is significantly improved.

FIG. 8 is a simplified block diagram showing the configuration of a reading device 4a for a telephone which is another embodiment of the present invention. In the reader 4a, the same reference numerals are used for the parts corresponding to those of the reader 4 described above.

The drive signal A output from the electric circuit section 20 for driving the pulse motor 33 is applied to the pulse motor 33 and also to the comparator 38 and the individual contact 43 of the changeover switch 39. The pulse signal B from the rotary encoder 19 is given to the comparator 38 and
It is also given to the individual contact 42 of the changeover switch 39. The switching mode of the changeover switch 39 is switched by the signal C from the comparator 38. Common contact 41 of changeover switch 39
The signal D derived to (1) is given to the image sensor 10. The image sensor 10 reads an original image of one line in synchronization with the pulse of the signal D and outputs it as line image data to the electric circuit section 20.

FIG. 9 is a waveform diagram for explaining the operation of the reading device 4a. The drive signal A output from the electric circuit unit 20 is a pulse signal indicating the optimum operating speed V of the reading device 4a. This drive signal A is shown in FIG. 9 (1). Also,
The pulse signal B from the rotary encoder 19 is a pulse signal synchronized with the rotation of the drive roller 11,
At t2, when the operation speed of the reading device 4a decreases,
Its frequency becomes lower. The comparator 38, which is a comparison means, compares the phases of the drive signal A and the pulse signal B, and outputs a signal C that becomes a high level when the phase difference is a certain value or more. Therefore, at time t2, this signal C rises. The signal C is as shown in FIG. 9 (3). When the signal C is at a low level, the changeover switch 39, which is a changeover means, connects the individual contact point 43 and the common contact point 41 to each other, whereby the drive signal A is used as the signal D.
Derive to. Further, when the signal C is at a high level, the individual contact 42 and the common contact 41 are brought into conduction, so that the pulse signal B is led to the image sensor 10 as the signal D. Therefore, as the signal D, a pulse signal synchronized with the rotation of the conveying roller 11 is derived as shown in FIG. 9 (4), and the image sensor 10 reads an original image of one line in synchronization with the signal D. For example, an accurate original image can be read without the image of transmitted image data extending or contracting.

FIG. 10 is a block diagram showing a simplified configuration of a reading device 4b of a telephone according to still another embodiment of the present invention. In the reading device 4b, the same reference numerals are used for the portions corresponding to those of the reading device 4 described above. In the reading device 4b, the drive signal A for driving the pulse motor 33 from the electric circuit unit 20 is given to the pulse motor 33 and also the comparator.
Also given to 38. Further, the pulse signal B from the rotary encoder 19 is given to the comparator 38 and also to the image sensor 10. Signal C output from comparator 38
Is given to the notification circuit 40, which activates the notification circuit 40.

The operation of the reading device 4b will be described with reference to FIG. The drive signal A output from the electric circuit unit 20 rotates the pulse motor 33 at a rotation speed corresponding to the optimum operation speed V of the reading device 4b. The drive signal A is as shown in FIG. 11 (1). The pulse signal B output from the rotary encoder 19 is a pulse signal synchronized with the rotation of the carry roller 11, and its frequency changes in accordance with the operating speed of the reading device 4b. For example, at time t3, the reading device
A case where the operation speed of 4b becomes slow will be described. 11th
As shown in Fig. (2), the period of the pulse signal B is the time
At t3, the frequency becomes lower than the frequency corresponding to the optimum operating speed V. In the comparator 38, the drive signal A and the pulse signal B
The phase difference between the signal and the signal is detected, and when the phase difference is equal to or larger than a certain value, the signal C that becomes high level is derived. Notification circuit 40
Includes a speaker, for example, and is activated when the signal C is at high level.

The image sensor 10 reads an original image of one line in synchronization with the pulse of the pulse signal B from the rotary encoder 19 and outputs it as line image data to the electric circuit unit 20.
With such a method, when the operation speed of the reading device 4b is slightly deviated from the optimum operation speed V, the line image data can be normally output. If the operation speed of the reading device 4b deviates greatly from the optimum operation speed V, the image sensor 10 cannot perform normal reading. However, in the reading device 4b, the notification circuit 40 is activated in such a case, and the operator can be notified of that fact. As a result, the operator can easily operate the reading device 4b at the optimum operation speed V and can read the original image normally.

In this way, in a telephone having a facsimile function, when the readers 4, 4a, 4b are manually operated, the operability can be significantly improved.

According to the present invention described in claims 1 and 3, when the drive roller provided by the image reading apparatus causes the drive roller to be rotationally driven by the drive signal from the control circuit to perform self-propelled scanning. In addition, the operator scans the image reading device with his / her hand, and when the scanning speed of the image reading device is increased or decreased depending on how the force is applied at that time, based on the drive signal, As a result of comparison by the comparison means, the first rotation speed of the drive roller obtained and the second rotation speed which is the actual rotation speed of the drive roller detected by the rotation amount detection means, the first and second results.
When the difference in rotation speed of is larger than the predetermined value,
The notification operation is performed by the notification means, and thus the operator adjusts the speed of the image reading device by adjusting the force of the hand attached to the image reading device so that the notification operation is stopped.
This allows the image reading device to accurately read the image reading device and take in the image data from the image reading device to the communication device, so that the image reading device can be constantly scanned at the optimum speed. This allows the original image to be read accurately.

Particularly, according to the present invention, the drive roller is rotated by the drive means intermittently driven by the drive signal from the control circuit, and the actual rotation speed of the drive roller is detected by the rotation amount detection means and thus obtained. Since the notification operation is performed by the notification means when the difference between the first and second rotation speeds that is set is larger than a predetermined value, the excellent effect that the comparison operation by the comparison means can be accurately performed is provided. Even if, for example, the outer diameter of the drive roller changes due to wear or the like, the comparison operation and therefore the notification operation can be accurately performed. As described above, according to the present invention, since the notification operation can be performed accurately, the excellent effect that the document image can be accurately read and the image data from the image reading device to the communication device can be accurately obtained, To be achieved.

According to the present invention of claim 2, as a result of the comparison by the comparison means, the first rotation speed corresponding to the drive signal and the second rotation speed which is the actual rotation speed detected by the rotation amount detection means are detected. If the difference is larger than a predetermined value, the function of the switching means allows the image reading device to take in the image data from the image reading device to the communication device in synchronization with the signal from the rotation amount detecting means. Therefore, even when the operator puts his / her hand on the image scanning device that performs self-propelled scanning, the document image can be accurately captured even if the scanning speed of the image scanning device largely changes from the optimum speed. If the difference between the first and second rotation speeds is smaller than a predetermined value, the switching means operates to cause the capture in synchronization with the drive signal from the control circuit to accurately read the original image.
Therefore, it is possible to perform the acquisition and transmission, and to accurately perform the processing operation of the image data.

[Brief description of drawings]

FIG. 1 is a perspective view showing an appearance of a telephone 1 which is an image data transmitting apparatus of an embodiment of the present invention, FIG. 2 is a perspective view showing a state in which a reading device 4 of the telephone 1 is removed, and FIG. 3 is a telephone. 1
Is a sectional view showing a simplified configuration of FIG. 4, FIG. 4 is a sectional view showing a simplified configuration of the vicinity of the reading device 4 when the reading device 4 of the telephone 1 is attached to the device body 2, and FIG. Sectional drawing which shows the structure of the reader 4 when the apparatus 4 is detached from the apparatus main body 2 and used, FIG. 6 is the block diagram which simplifies and shows the structure of the reader 4, FIG. 8 is a waveform diagram for explaining the operation of the configuration of FIG. 8, FIG. 8 is a block diagram showing a simplified configuration of a reading device 4a of a telephone which is another embodiment of the present invention, and FIG. 9 is a configuration of the configuration shown in FIG. FIG. 10 is a waveform diagram for explaining the operation, FIG. 10 is a block diagram showing a simplified configuration of a reading device 4b of a telephone according to still another embodiment of the present invention, and FIG. FIG. 12 is a waveform diagram for carrying out the reading, and FIG. FIG. 6 is a cross-sectional view of the vicinity of a taker device 44. 1 ... phone, 2 ... device body, 3 ... handset,
4,4a, 4b …… reading device, 10 …… contact image sensor, 1
1 ... Drive roller, 13 ... Feeding roller, 16 ... Conveying roller, 17,17a ... Document, 19 ... Rotary encoder, 32 ...
… Belt, 33 …… Pulse motor, 38 …… Comparator, 39 ……
Changeover switch, 40 ... Notification circuit

Front page continuation (72) Inventor Junichiro Matsumoto 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Within Sharp Corporation (72) Inventor Naomitsu Murata 1-1-6 Uchiyuki-cho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Mitsunobu Kondo 1-16 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (56) Reference JP-A-63-86953 (JP, A) Shoukai-62-201567 (JP, U)

Claims (3)

(57) [Claims] 1. An image data transmitting apparatus having an image reading apparatus for reading a document image and a communication apparatus for taking in and transmitting image data from the image reading apparatus, a control circuit for generating a drive signal, and the image reading apparatus. Drive means provided on the image reading apparatus and intermittently driven by a drive signal from the control circuit, a drive roller provided on the image reading apparatus, contacting the document surface, and rotationally driven by the drive means; A comparison for comparing a rotation amount detection means for detecting a rotation speed with a first rotation speed of the drive roller obtained based on the drive signal and a second rotation speed of the drive roller detected by the rotation amount detection means. And an informing means for performing an informing operation when the difference between the first rotation speed and the second rotation speed of the drive roller is larger than a predetermined value as a result of comparison by the comparison means. Including image data from the image reading device to the communication device,
An image data transmission device characterized in that it is performed in synchronization with a drive signal from the control circuit. 2. An image data transmission device having an image reading device for reading a document image and a communication device for taking in and transmitting image data from the image reading device, and a control circuit for generating a drive signal, and the image reading device. Drive means which is provided in the image reading apparatus and is intermittently driven by a drive signal from the control circuit; a drive roller which is provided in the image reading apparatus and which is in contact with the document surface and is rotationally driven by the drive means; And a second amount of rotation of the drive roller detected based on the drive signal and a second amount of rotation of the drive roller detected by the amount of rotation detection means are compared. When the difference between the first rotation speed and the second rotation speed of the drive roller is larger than a predetermined value as a result of comparison by the comparison means and the comparison means, the first side is previously determined. Switching means for switching to the second side when the switching side is on the first side, in synchronization with the signal from the rotation amount detecting means, and for the second side. The image data transmitting device is characterized in that when the above condition is met, the image data is taken in from the image reading device to the communication device in synchronization with the drive signal from the control circuit. 3. An image data transmission apparatus having an image reading apparatus for reading a document image and a communication apparatus for taking in and transmitting image data from the image reading apparatus, a control circuit for generating a drive signal, and the image reading apparatus. Drive means provided on the image reading apparatus and intermittently driven by a drive signal from the control circuit, a drive roller provided on the image reading apparatus, contacting the document surface, and rotationally driven by the drive means; A comparison for comparing a rotation amount detection means for detecting a rotation speed with a first rotation speed of the drive roller obtained based on the drive signal and a second rotation speed of the drive roller detected by the rotation amount detection means. And an informing means for performing an informing operation when the difference between the first rotation speed and the second rotation speed of the drive roller is larger than a predetermined value as a result of comparison by the comparison means. Including image data from the image reading device to the communication device,
An image data transmission device, characterized in that the image data transmission is performed in synchronization with a signal from the rotation amount detecting means.