JPH06209386A - Picture communication equipment - Google Patents

Abstract

PURPOSE:To make an equipment small and light in weight and to reduce cost by providing the voltage conversion means of power inputted by a power supply means in a read means. CONSTITUTION:By incorporating a 3-terminal regulator in a contact type image sensor (CS), converting to a battery power supply voltage DC+12V to DC+10V by the incorporated 3-terminal regulator and using it for sensor driving and LED power supply, the influence of the battery power supply voltage is avoided. Then, a recording part 1-13 is constituted of a DMA controller, the thermal head of B4/A4 sizes and a TTLIC, etc., takes out recording data stored in a RAM 1-3 by the control of a CPU 1-1 and prints them out as hard copy. Also, by providing a regenerative energy saving thermal head by thickening under-graze, the thermal head can perform printing by the battery power supply voltage DC+12V and the influence on power supply voltage fluctuation is made less.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image communication device using a battery power source.

[0002]

2. Description of the Related Art FIG. 1 shows a conventional facsimile machine.

Conventionally, in a facsimile apparatus using a battery power source, the output of the battery power source 1-11 is set to DC.
-Supply voltage fluctuation / suppression by passing through a voltage conversion / stabilization circuit 1-17 such as a DC converter.
14, the reading unit 1-12, and the recording unit 1-13 were connected as power sources.

[0004]

However, in the above-mentioned facsimile apparatus in which the battery power source is connected via the DC-DC converter, the apparatus configuration becomes large, and it is not suitable for downsizing, and the cost is low. There was a problem that it was also disadvantageous.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to directly connect a battery power output to each part,
An image communication apparatus having a reading unit for reading an image and a power supply unit composed of a battery, wherein the reading unit has a voltage conversion unit for converting the electric power input by the power supply unit. The purpose is to

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 is a drawing which best represents the features of the present invention. In FIG. 3, FIG. 3 shows a block diagram of the main body of the present invention.

The CPU 1-1 follows the program stored in the ROM 1-2, and the entire facsimile apparatus, that is, the RAM 1-3, the operation unit 1-4, the reading unit 1-12, the recording unit 1-13, and the driving unit 1-14. , Modem 1-6, NCU
It has a function of controlling the first unit 1-12, the sensor unit 1-5, and the speaker unit 1-8.

Each of these parts will be described below.

The RAM 1-3 stores the binarized image data read by the reading unit 1-12 or the recording unit 1-13.
It stores the binarized data recorded in 1. and stores the binarized data output from the subscriber line 1-10 through the NCU unit 1-7 for the signal modulated by the modem 1-6. . Further, the RAM 1-3 stores the analog waveform input from the subscriber line 1-10 in the NCU section 1-7 and the modem 1.
It is also used to demodulate via -6 and store the binarized data.

The operation section 1-4 includes a start key for transmission and reception, a mode key for designating an operation mode such as fine and standard in a transmitted image, a copy key for copying, and a stop key for stopping the operation. Composed of.

The CPU 1-1 detects the pressed states of these keys and controls the respective parts according to the pressed states.

The sensor unit 1-5 is composed of a recording paper width sensor, a recording paper presence sensor, a document width sensor and a document presence sensor, and detects the condition of the document and the recording paper under the control of the CPU 1-1.

The modem 1-6 comprises a G3, G2, G1, old FM modem and a clock generation circuit connected to these modems, and is stored in the RAM 1-3 under the control of the CPU 1-1. The transmission data is modulated and output to the subscriber line 1-10 or the mobile communication terminal 1-9 via the NCU unit 1-7. Further, the modem 1-6 introduces an analog signal from the subscriber line 1-10 or the mobile communication terminal 1-9 through the NCU unit 1-7, demodulates the analog signal, and binarizes the data to the RAM 1-3. To be stored in.

The NCU 1 section 1-7 includes a DC capturing circuit, 2
It is composed of a line / line conversion circuit and connects the subscriber line 1-10 to the modem 1-6. In addition, the mobile communication terminal 1
-9 is connected to the modem 1-6.

The speaker unit 1-8 is a speaker driver,
It is composed of a speaker, and performs line monitoring of the mobile communication terminal 1-9 or LINE 1-10 under the control of the CPU 1-1.

The mobile communication terminal 1-9 is a line terminal for mobile communication connected to the NCU section 1-7.

LINE 1-10 is a subscriber line connected to the NCU unit 1-7.

The battery power source 1-11 is composed of a nickel cadmium battery or the like, and a direct current + 12V power source is directly supplied to the reading unit 1-12, the recording unit 1-13, and the driving unit 1-14.

The reading unit 1-12 is a DMA controller,
It is composed of a contact image sensor (CS), TTLIC, a binarization circuit, etc., and binarizes the data read by using the CCD or CS under the control of the CPU 1-1, and sequentially binarizes the binarized data. -3. Further, by incorporating a three-terminal regulator in the contact image sensor (CS), the built-in three-terminal regulator converts the battery power supply voltage DC + 12V into DC + 10V and uses it as a sensor drive and an LED power supply.
It is designed so that it is not affected by the battery power supply voltage.

The recording unit 1-13 is a DMA controller,
RAM composed of a B4 / A4 size thermal head, TTLIC, etc., and a RAM under the control of the CPU 1-1.
The recording data stored in 1-3 are taken out and printed out as a hard copy.

Further, the thermal head is a heat storage type energy-saving thermal head by thickening the undergrace so that printing can be performed at the battery power supply voltage DC + 12V, and the influence on the power supply voltage fluctuation is reduced.

A sectional view of this thermal head is shown in FIG.

As shown in FIG. 2, the recording head has a heating element arranged on the underglaze. Although energy is supplied to the heating element to record on the thermal paper, a voltage of 24 V is usually applied to instantly start the heating element. Normally, the applied voltage of 24V is DC-
It is supplied using a standardized power source such as a DC converter.
Here, in order to miniaturize this power supply, in this embodiment,
Instead of the stabilized power supply, a battery is used as a direct power supply. Since this battery has a voltage of 12V, the heating element of the recording head must also be driven at 12V. Then, the electric energy applied to the heating element is 2
In order to make it equal to that at the time of applying 4V, the current value is doubled for driving, but at an applied voltage of 12V, the heating element does not instantly rise and heat is dissipated to the surroundings, so high density print output is obtained. I can't get it. It was found that the main cause of this heat dissipation was that the heat generated from the heating element was transmitted to the ceramic and aluminum substrate through the underglaze. Therefore, in order to prevent the heat from radiating from the underglaze, the thickness of the underglaze is set to the conventional 70 μm.
m to 150 μm to give the underglaze a heat storage effect. In addition, the thickness of the aluminum substrate is 4.85
The thickness was reduced from 2.5 mm to 2.5 mm to reduce the heat dissipation effect. By using this heat storage type head, instantaneous rising can be realized even with a voltage of 12 V, and the recording density as in the past can be obtained.

Further, this head has a structure in which a voltage drop (difference in applied voltage between a heating element close to a terminal to which a voltage is applied and an element other than the heating element) hardly occurs in the head. Therefore, the applied voltage is 12V due to the voltage fluctuation of the battery.
Even if the voltage drops to 11V, a part of the image will not be blurred.

Therefore, even if the recording system is directly driven by the battery power source without using the stabilizing power source, the image quality is not affected at all.
The power supply can be simplified.

The drive unit 1-14 controls the stepping motor for driving the paper feed / discharge rollers of the reading unit 1-12 and the recording unit 1-13, the gear for transmitting the driving force of the motor, and the motor. It is composed of a driver circuit for doing so.

The motor is controlled by a constant current drive system so that it is less affected by the fluctuation of the battery power supply voltage.

The three-terminal regulator 1-15 converts DC + 12V input from the battery power source 1-11 into DC + 5V and supplies it as the power source of the 5V system block 1-16.

[0029]

As described above, the drive system is a constant current drive system, the recording unit 1-13 uses a thermal storage type thermal head, and the reading unit 1-12 uses a contact sensor with a built-in three-terminal regulator. By using it, the influence of the fluctuation of the battery power supply voltage is reduced, the battery power is directly supplied to the driving unit 1-14, the reading unit 1-12, without passing through the voltage conversion / stabilization circuit 1-17 such as the DC-DC converter. Drive unit 1-1
4 can be connected as a power source, which is effective in downsizing, weight reduction, and cost reduction.

[Brief description of drawings]

FIG. 1 is a block diagram of a conventional example.

FIG. 2 is a cross-sectional view of a recording unit of a conventional example.

FIG. 3 is a block diagram of the present embodiment.

FIG. 4 is a cross-sectional view of a recording unit of this embodiment.

[Explanation of symbols]

 1-1 CPU 1-2 ROM 1-3 RAM 1-4 Operation part 1-5 Sensor part 1-6 MODEM 1-7 NCU 1-8 Speaker part 1-9 Mobile communication 1-10 LINE 1-11 Battery power supply 1-12 Reading Unit 1-13 Recording Unit 1-14 Drive Unit 1-15 Three-Terminal Regulator 1-16 5V System Block

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takeshi Tsukamoto 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (31)

[Claims] 1. An image communication apparatus having a reading unit for reading an original image and a power supply unit composed of a battery, wherein the reading unit has a voltage conversion unit for converting the voltage of the electric power input by the power supply unit. An image communication device characterized by. 2. The image communication device according to claim 1, further comprising communication means for transmitting the image data read by the reading means. 3. The image communication apparatus according to claim 1, further comprising a recording unit that records the image data read by the reading unit. 4. The image communication apparatus according to claim 1, further comprising a conveying unit that conveys a document to the reading unit. 5. An image communication apparatus having a recording means for recording image data and a power supply means composed of a battery, wherein the recording means has a recording head having a heating element formed on a member having a high heat storage effect. Characteristic image communication device. 6. The image communication apparatus according to claim 5, further comprising a reading unit that reads a document image, and the recording unit records the image data read by the reading unit. 7. The image communication device according to claim 5, further comprising communication means for receiving image data from an external device, wherein the recording means records the image data received by the communication means. 8. The image communication apparatus according to claim 5, further comprising a conveying unit that conveys a recording sheet to the recording unit. 9. An image communication apparatus comprising: a reading unit for reading an original image; a conveying unit for conveying an original to the reading unit; and a power supply unit composed of a battery, wherein the conveying unit is driven by a constant current driving method. An image communication device characterized by. 10. The image communication device according to claim 9, further comprising communication means for transmitting the image data read by the reading means. 11. An image communication apparatus comprising: recording means for recording image data; conveying means for conveying recording paper to the recording means; and power supply means composed of a battery, wherein the conveying means is driven by a constant current driving method. An image communication device characterized by: 12. The image communication device according to claim 11, further comprising communication means for receiving image data from an external device, wherein the recording means records the image data received by the communication means. 13. An image communication apparatus comprising: a reading unit for reading a document image; a recording unit for recording image data; and a power supply unit composed of a battery, wherein the reading unit is a voltage of electric power input by the power supply unit. The recording means has a voltage converting means for converting,
An image communication apparatus comprising: a recording head having a heating element formed on a member having a high heat storage effect. 14. The communication device according to claim 13, further comprising communication means for receiving image data from an external device, wherein the recording means records the image data read by the reading means or the image data received by the communication means. An image communication device characterized by the above. 15. The image communication apparatus according to claim 13, further comprising a conveying unit that conveys a document to the reading unit or conveys a recording sheet to the recording unit. 16. The image communication device according to claim 13, wherein the transmitting unit transmits the image data read by the reading unit. 17. An image communication apparatus comprising: a reading unit for reading an original image; a conveying unit for conveying an original to the reading unit; and a power supply unit including a battery, wherein the reading unit is input by the power supply unit. An image communication apparatus comprising: a voltage conversion unit that converts voltage of electric power, wherein the transfer unit is driven by a constant current driving method. 18. The image communication device according to claim 17, further comprising communication means for transmitting the image data read by the reading means. 19. The image communication device according to claim 17, further comprising a recording unit that records the image data read by the reading unit. 20. A recording means for recording image data according to claim 18, wherein the communication means receives image data from an external device, and the recording means records the image data received by the communication means. An image communication device characterized by: 21. The image communication device according to claim 19, wherein the conveying unit conveys a recording sheet to the recording unit. 22. The image communication apparatus according to claim 20, wherein the conveying unit conveys a recording sheet to the recording unit. 23. An image communication apparatus comprising: a recording unit for recording image data; a conveying unit for conveying a recording sheet to the recording unit; and a power supply unit composed of a battery, wherein the recording unit has a high heat storage effect. An image communication apparatus, comprising a recording head having a heating element formed thereon, and the conveying means is driven by a constant current driving method. 24. The image communication apparatus according to claim 23, further comprising reading means for reading a document image, wherein the recording means records the image data read by the reading means. 25. The image communication apparatus according to claim 23, further comprising communication means for receiving image data from an external device, wherein the recording means records the image data received by the communication means. 26. The image communication device according to claim 24, further comprising communication means for transmitting the image data read by the reading means. 27. The image communication apparatus according to claim 24, wherein the conveying unit conveys a document to the reading unit. 28. A reading unit for reading an original image, a recording unit for recording image data, a conveying unit for conveying an original to the reading unit or a recording sheet for the recording unit, and a power source including a battery. The reading means includes a voltage converting means for converting the voltage of the electric power input by the power supply means, and the recording means includes:
An image communication apparatus, comprising: a recording head having a heating element formed on a member having a high heat storage effect, and the transporting means being driven by a constant current driving method. 29. The image communication apparatus according to claim 28, wherein the recording unit records the image data read by the reading unit. 30. The image communication device according to claim 28, further comprising communication means for transmitting the image data read by the reading means. 31. The image communication device according to claim 28, further comprising communication means for receiving image data from an external device, wherein the recording means records the image data received by the communication means.