JPH04189063A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To reduce power consumption in the standby state by stopping the supply of power to a thermal fixing means in the standby state and implementing memory reception at the reception state till the heat fixing means reaches a prescribed temperature. CONSTITUTION:When a data is sent from an opposite party, a reception mode is set, a CPU 50 energizes a heater 73 via a heater control circuit 74 to start heating a heat roller. Since a picture cannot be recorded by a recording processing unit 48 till the heat roller reaches a prescribed temperature, the received data is tentatively stored in a RAM 54 and so-called memory reception is executed. When the heat roller reaches a prescribed temperature, while the received data is being stored succeedingly in the RAM 54, the received data having been stored before is read and sent to the processing unit 48, from which a picture is outputted. When all data are outputted from the processing unit 48, the energizing of the heater 23 is stopped, and then the power consumption in the standby state is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile device that records characters, graphics, etc. using light based on information transmitted through a receiving section.

[Prior Art] Conventionally, various facsimile machines have been put into practical use depending on their printing method, but the printing method using light has the disadvantages of high printing speed and low operating noise. Its use has been increasing recently due to its characteristics. Conventionally, many devices of this type have been used that utilize electrophotographic technology. This involves forming images of characters, figures, etc. on a charged photoreceptor using an appropriate optical system, and then attaching colored resin powder called toner to the unirradiated, residually charged areas, which are then printed onto the paper on which the image is to be recorded. The image is transferred onto the surface and thermally fixed to perform recording.

[Problems to be Solved by the Invention] In the above-described conventional facsimile apparatus, power is supplied to the thermal fixing device to maintain the temperature at a constant temperature even during standby, resulting in increased power consumption during standby. However, if the heat fixing device is not kept at a constant temperature even during standby, there is a problem in that reception cannot be received until the heat fixing device reaches a certain temperature during reception.

The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a facsimile machine that consumes less power during standby and can quickly receive data when receiving.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention includes a receiving section that receives transmitted information, and a selective photosensitive method based on the information transmitted via the receiving section. An exposure device for exposing a recording medium to form a latent image, a developing device for developing the latent image, and a heat fixing device for thermally fixing the received image developed by the developing device. During standby, power supply to the heat fixing means is stopped, and during reception, memory reception is performed at least until the heat fixing means reaches a predetermined temperature.

[Operations] According to the present invention configured as described above, during standby,
The supply of power to the heat fixing means is stopped to reduce power consumption during standby. Furthermore, during reception, memory reception is performed at least until the heat fixing means reaches a predetermined temperature.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

First, a block diagram showing the processing functions of the facsimile device 1 of this embodiment will be explained.
As shown in FIG. 5, a reading mechanism section 2 for reading a document;
A signal processing circuit 35 that performs waveform correction and signal conversion processing on the signal read by the reading mechanism section 2, an electronic control device 20 that processes the signal from the signal processing circuit 35, and a transmission from the electronic control device 20. A communication processing device 47 that transmits signals to a destination and receives transmission signals sent from the destination, and records transmission data transmitted from the destination and output via the communication processing device 47 and the electronic control device 20. A recording processing device 48 is provided.

First, the reading mechanism section 2 that reads a document will be explained.

As shown in FIG.
A line period pulse generator 42 is provided. The reading circuit 41 is similar to a conventional reading circuit, and includes a light emitting source, such as a light emitting diode, that emits light, a rod-shaped lens, such as a selfoc lens, that focuses an image on the document onto a light receiving element, and an image on the document. CdS, C
It is composed of a light receiving element made of dSe, 5e-As-Te, a register that reads one line of the image of the document from a plurality of light receiving elements, and an amplifier that amplifies the signal read by the register. The one-line period pulse generator 42 is composed of an encoder and a photointerrupter.

The signal processing circuit 35 is a correction circuit 4 that corrects the waveform of the signal detected by the reading sensor circuit 41 of the reading mechanism section 2.
3 and one pulse signal for one line generated by the one line period pulse generator 42 of the reading mechanism section 2,
A sensor control and other pulse generation circuit 44 extracts the read signal for one line, and an A/D data processing circuit 45 converts the signal corrected by the correction circuit 43 into a binary or multivalued signal. Be prepared.

The electronic control device 20 that processes the converted signal from the A/D data processing circuit 45 will be described.

As shown in FIG. 6, the electronic control device 20 is a well-known CP.
U50. ROFv152. The CPU 50 executes programs stored in the ROM 52, and in the receiving mode,
Temporarily stores received data. Input/output circuits/ports include a serial I10 port (SIO) 57 that exchanges data with an external communication circuit via a connector 55, and a control signal that outputs data corresponding to the amount of light emitted to the light source of the reading sensor circuit 41. a data input port 1 that receives signal data corrected and converted for each line of the signal detected by the light receiving element of the read sensor circuit 41; a data output port 3 that outputs data to the recording device 48; A motor drive circuit 65 that outputs a control signal to control the paper feed motor 32 to transport the paper: a'3.24 in synchronization with the reading and printing operations of the sensor circuit 41, a paper break detector 34, and a temperature detector. There are a sensor input port lower for inputting detection signals from seven sensors, a heater control circuit 74 for controlling on/off of a shutter 73 for heating a heating roller 72, which will be described later, and the like. In addition, these input/output circuits/ports and CPU50. The ROM 52 and the like are connected to each other via a common bus 70.

The ROM 52 stores a sending program and a receiving program necessary for operating as a normal facsimile machine.

Next, the communication processing device 47 shown in FIG. 5 will be explained. When transmitting, the communication processing device 47 converts the original image signal including DC components to high frequency components into a waveform that is easy to transmit according to the characteristics of the communication circuit, and when receiving, the transmitted transfer waveform is converted back into the original image. It includes a modulation/demodulation device that reproduces and records signals.

Next, the recording processing device 48 will be explained in detail.

In FIG. 1, the recording processing device 48 includes a housing 10, and the interior of the housing 10 is divided into a first darkroom 14 and a second darkroom 16 by a partition wall ]2.

A feed roller 21 and a pressure roller 22 are provided in a photosensitive and pressure sensitive paper path for feeding the photosensitive and pressure sensitive paper 18 in the housing 10, and the photosensitive and pressure sensitive paper 18 is transported from a tray (not shown) to a first darkroom 14 and a second darkroom. The images are sequentially sent to the outside via a support stand 24 in the dark room 16. Note that the pressure roller 2
2 is for pressing the photosensitive and pressure sensitive paper 18 on one side with a predetermined surface pressure after completion of exposure, thereby cleaning the microcapsules contained in the photosensitive and pressure sensitive paper 18 and causing color development. In this embodiment, the pressure roller 22 corresponds to the destruction device.

Here, the photosensitive pressure sensitive paper 18 corresponds to a photosensitive recording sheet, and is, for example, JP-A-58-23024.
This paper is a photosensitive and pressure sensitive paper similar to that disclosed in Japanese Patent Application Laid-Open No. 58-23025. That is, the photosensitive pressure sensitive paper 18
consists of a base layer, a color developer layer provided on the base layer, and microcapsules made of a photocurable resin containing a colorless dye that develops color by reacting with the color developer layer. Microcapsules that have been exposed to light are not crushed during development, but microcapsules that are not sufficiently exposed to light are crushed under the degree of exposure, and the colorless dye that oozes out from the microcapsules depending on the degree of crushing develops. It reacts with the layer, so that depending on the degree of exposure, a neutral color pixel is displayed. Therefore, as shown in the photosensitive characteristics diagram of FIG. 7, in such a photosensitive and pressure sensitive paper 18, the color density is saturated in the area where the exposure amount is small, or the color density is saturated in the area where the exposure amount is intermediate, and the color density is the same as the exposure area. There is a linear portion B which decreases proportionally as the amount of light increases (logarithmic value), or a foot portion C where almost no color develops in areas where the exposure amount is large. In this embodiment, the linear portion B is set as a color density variable area in which color density is changed in accordance with changes in exposure amount in order to record an image. Further, the shoulder portion A exists depending on the curing reaction characteristics of the photosensitive resin constituting the base of the microcapsule, the setting of the developing pressure, and the like. In other words, curing of the photosensitive resin is initiated when the polymerization initiator is decomposed by light and becomes free radicals, but initially the oxygen present in the microcapsules reacts with these free radicals and inactivates the curing reaction. become

In addition, as shown in FIG. 2, the above photosensitive characteristics change with the development pressure as a parameter, or the development pressure is set at P, P2 (for example, 20 to 30
kg/cd). In the figure, the developing pressure is P, <P.

<P2<P3.

A light source lamp 26 is provided in the first darkroom 14 as a basic exposure device that is activated when the facsimile machine is set to a copy mode or a reception mode. The light irradiated by the light source lamp 26 includes light with a wavelength that the photosensitive and pressure sensitive paper 18 is sensitive to, and in the process of the photosensitive and pressure sensitive paper 18 passing through the first dark room 14, the exposure amount shown in FIG. Exposure is performed to obtain E1. Light source lamp 26
The brightness of is set in this way.

In the second darkroom 16, a monochrome CRT 28 and an imaging optical system 30, which constitute the image exposure apparatus of this embodiment, are provided. In the CRT 28 functioning as the image forming light source of this embodiment, an electron gun 36 is attached to a phosphor screen 34 provided on the inner surface of the face plate 32.
The electron beam 38 emitted from the photosensitive pressure sensitive paper 18 is scanned in the horizontal direction, that is, in the direction perpendicular to the direction in which the photosensitive pressure sensitive paper 18 is fed. The deflection angle of this electron beam 38 is controlled by a deflection coil 40, and the amount of electrons is controlled by a drive circuit (not shown), so that the phosphor screen 38 is
At the top, one line out of a large number of scanning lines constituting the image to be recorded is displayed sequentially in accordance with the image signal SG supplied from the electronic control unit 20. The light from the phosphor screen 34 is converted by an optical filter 42 into light having a wavelength within the photosensitive zone of the photosensitive paper 18, and then an image is formed on the photosensitive pressure sensitive paper 18 by the imaging optical system 30. The photosensitive pressure sensitive paper 18 is moved on a support base 24 via a feed roller 20 in accordance with the moving speed of a line displayed on a phosphor screen 34. As a result, a latent image is formed on the photosensitive paper 18. Then, the photosensitive paper 18 is developed by being pressed by passing between a pair of pressure rollers 22 .

A thermal fixing device consisting of a pair of heating rollers 72 and 75 is arranged downstream of the pressure roller 22, and a heater 73 is built in the center of one of the heating rollers 72. Further, a temperature detector 71 made of a thermistor or the like is arranged close to the heating roller 72, and the heating roller 72 is maintained at a constant temperature by the electronic control device 20. Therefore, the photosensitive paper 18 that has been developed by the pressure roller 22 is thermally fixed by the thermal fixing device.

As described above, according to this embodiment, at the same time as the recording processing device 48 is activated, the photosensitive pressure sensitive paper 18 is exposed to light corresponding to the exposure amount E shown in FIG. CR72g in the second darkroom 16
A latent image is formed on the photosensitive pressure sensitive paper 18 by being exposed to light from the photosensitive pressure sensitive paper 18 . Therefore, the amount of light emitted by the phosphor screen 34 of the CRT 28 is determined by subtracting a certain amount of exposure E from the light source lamp 26 from the total amount of exposure that the photosensitive and pressure sensitive paper 18 receives. recording is done immediately. Therefore, it is possible to efficiently record images without requiring the phosphor screen 34 to emit an excessive amount of light, which suppresses deterioration of the phosphor screen 34 and provides sufficient durability. be.

In the device configured as described above, the operation in the reception mode will be explained next with reference to FIG.

Normally, during standby, power is not supplied to the heater 73 of the heat fixing device.

Here, when data is transmitted from the other party via the communication processing device 47 connected to the telephone line, the reception mode is set (Sl), and the CPU 50 controls the heater control circuit 7.
4, the heater 73 is energized to start heating the heating roller 72 (S2). Here, since the recording processing device 48 cannot record an image until the heating roller 72 reaches a predetermined temperature, the data received via the communication processing device 47 is temporarily stored in the RAM 54, and the so-called Memory reception is executed (S3). After that, heating roller 7
When the temperature reaches a predetermined temperature (S4), while the received data continues to be stored in the RAM 54, the received data previously stored in the RAM 54 is read and sent to the recording processing device 48, and an image is created based on the received data. Output (S5).

When the communication ends (S6) and all the received data stored in the RAM 54 is output by the recording processing device 48 (
S7), energization of the heater 73 is stopped (S8), and the process returns to the standby state again. As described above, in this embodiment, since the heater 73 is not energized in the standby state and during transmission, it is possible to reduce power consumption during standby, etc., and when receiving data, the heating roller 72 is not energized. Since memory reception is performed until the temperature reaches the temperature, data can be received quickly.

Next, another embodiment of the present invention will be described. In the following embodiments, parts having the same functions as those described above are denoted by the same reference numerals, and explanations thereof will be omitted.

In FIG. 3, the light-sensitive and pressure-sensitive paper 48 is capable of displaying a color image, and includes three types of microcapsules, for example, microcapsules C that is photocurable to light with a wavelength λC of about 340 nm, and microcapsules C that is photosensitive to light with a wavelength λC of about 340 nm; Microcapsule M photocurable to light of λM and 470r+I
Microcapsules Y, which are photosensitive and cured by light having a wavelength λY of about 11, are mixed. Furthermore, the colorless dye contained in the microcapsules C develops a cyan (CYAN) color, and the colorless dye contained in the microcapsules M develops a magenta color. The colorless dye contained in the capsules Y is yellow (YELLO-"). Therefore, when the photosensitive pressure sensitive paper 48 is exposed to light of wavelength λC, only the microcapsules C are cured. In this case, microcapsules M and Y are crushed to develop magenta color and yellow color, resulting in a red color.Furthermore, when the photosensitive pressure sensitive paper 48 is exposed to light of wavelength λC, microcapsules N1
Since only microcapsules C are cured, microcapsules C are hardened during the development process.
And the microcapsules Y are crushed and develop cyan and yellow colors, resulting in a green color. moreover,
When the photosensitive and pressure sensitive paper 48 is exposed to light of wavelength λY, only the microcapsules Y are cured, so in the development process, the microcapsules C and M are crushed and cyan and magenta colors are developed 7, resulting in blue color. It is starting to appear. Figure 4 shows the photosensitive pressure sensitive paper 4.
8 is a diagram showing the photosensitive characteristics of No. 8.

In the first darkroom 14, there are three light source lamps 50C150μ,
50Y is provided. The light source lamp 50c has a wavelength λC
The brightness of the light is the same as that of the first dark room 14.
The photosensitive pressure sensitive paper 48 passing through the photosensitive pressure sensitive paper 48 is set to be exposed by the amount shown in the exposure amount ECI in FIG. The light source lamp 50° emits light of wavelength λM, and its brightness is set so that the light-sensitive and pressure-sensitive paper 48 passing through the first dark room 14 is exposed to the amount of light shown in exposure ffiEM+ in FIG. has been done. Furthermore, the light source lamp 50Y emits light of wavelength λY, and its brightness is set so that the light-sensitive and pressure-sensitive paper 48 passing through the first dark room 14 is exposed to the amount of light shown in the exposure amount Ey+ in FIG. has been done.

[1. Instead of the light source lamps 50c, 50M, and 50Y, a single light source lamp may be used that emits light including light with a wavelength λC, light with a wavelength λM, and light with a wavelength λY. This light source lamp irradiates light of wavelength λC, light of wavelength λM, and light of λY with a light intensity of the same ratio as the relative ratio of exposure amount ECI, exposure amount EL41, and exposure amount E'/I in FIG. 4. It is configured as follows. In this way, there is no need to adjust the amount of light for each wavelength, and the image recording apparatus has the advantage of being compact and inexpensive.

The second viewing room 16 is provided with a color CRT 52. On the inner surface of the face plate 32 of this CRT 52, there are three types of phosphors: among the pixels that make up the image, a phosphor 54 for displaying red pixels, a phosphor 540 for displaying green pixels, and a blue pixel. A red pixel, a green pixel, and a blue pixel are respectively displayed according to an image signal for recording a color image. The change angle is controlled by the electron beam 38 emitted from the electron gun 36 or the change coil 40, and the amount of electrons is controlled by a drive circuit (not shown), so that among the color images to be recorded, on the phosphor 54R, One line out of a large number of scanning lines constituting an image composed of red pixels is an image signal S supplied from the electronic control device 20.
If you want to change to G, it will be displayed one after another. Similarly, on the phosphor 54a, among the color images to be recorded,
One line out of a large number of scanning lines constituting an image made up of green pixels is sequentially displayed in accordance with the image signal SG supplied from the electronic control generator 20, and on the phosphor 540, the recording One line out of a large number of scanning lines constituting an image composed of blue pixels in the desired color image or the image signal S supplied from the electronic control unit 20
G is displayed sequentially.

On the front surface of the face plate 32, there are three types of filters, namely, an optical filter 56c that converts the light emitted from the phosphor 54R into light with the wavelength λC, and an optical filter 56c that converts the light emitted from the phosphor 540 into light with the wavelength λM. An optical filter 56Y is provided that converts the light emitted from the phosphor 54B into light having the wavelength λY. Fluorescent material 54R, 54
0.54B light is filtered through optical filters 56c, 56v, 56
After being converted into light having wavelengths in the photosensitive zone regions of the microcapsules C, M, and Y by Y, the imaging optical system 30
An image is formed on the photosensitive paper 48 by. The photosensitive paper 48 is moved on the support stand 24 via the feed roller 20 in accordance with the moving speed of the lines displayed on the phosphors 54R, 540, and 54a. As a result, a latent image is formed on the photosensitive paper 18, and a color image is developed by the pressure roller 22 and then thermally fixed by the heating rollers 72, 75 of the thermal fixing device.

As described above, in this embodiment as well, the photosensitive paper 48 is exposed in the first darkroom 14 by the light source lamps 50G, 5OM, and 50v corresponding to the exposure amounts Ec+, EMl, and EYI shown in FIG. The photosensitive paper 4 is exposed to light from the CRT 52 in the darkroom 16.
A latent image is formed at 8. Therefore, the amount of light emitted by the phosphors 54R254a and 54B of the CRT 52 is calculated by subtracting the fixed exposure amounts ECl, EM +, and EV I from the light source lamps 50c, 50M, and 50Y from the amount of exposure that the photosensitive paper 48 receives. 48. For this reason, the phosphors 54R, 540°54B
Since images can be efficiently recorded without requiring an excessive amount of light to be emitted from the phosphor, deterioration of the phosphor is suppressed and sufficient durability can be obtained.

Further, according to this example, microcapsules C9M,
As a result of giving different exposure amounts EC1, EM l, and EV to Y in advance, the relationship between the color density and the exposure amount can be approximately the same for each type of color development, so the signal processing for recording a color image can be performed easily. It has the advantage of being simple and easy.

In addition, in the above-mentioned embodiment, the basic exposure device was provided in the first darkroom 14 and the image exposure device was provided in the second darkroom 16.
Conversely, the image exposure device is located in the first darkroom 14, and the image exposure device is located in the second darkroom 16.
A basic exposure device may also be provided inside.

Further, the basic exposure device of the above embodiment, for example, the light source lamp 26, is set to the brightness given to the photosensitive paper pressure sensitive paper 18 at the exposure amount E shown in FIG. Even if the brightness is set to a certain amount of exposure, a certain effect can be obtained.

In addition, in order to record an image, the coloring density variable area where the coloring density is changed according to the change in exposure amount is defined as the straight line part B in FIG.
When setting not the entire amount but a part thereof, for example between E3 and E2, the basic exposure device exposes the photosensitive paper 18 so as to obtain the exposure amount E3.

The image forming light source may also include a light source and a shutter that opens and closes the light from the light source according to an image signal, and the image exposure device may be configured to move the image forming light source and photosensitive paper relative to each other. can be configured.

The above-mentioned embodiment is merely one embodiment of the present invention, and various modifications may be made to the present invention without departing from the spirit thereof.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to provide a facsimile machine that can reduce power consumption during standby and can quickly receive data during reception.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram illustrating the configuration of a recording apparatus according to an embodiment of the present invention, and FIG. 2 is a diagram showing the relationship between the exposure amount and luminescence density using the pressing force of the photosensitive paper used in the embodiment of FIG. 1 as a parameter. 3 is a diagram corresponding to FIG. 1 showing another embodiment of the present invention, FIG. 4 is a diagram showing the photosensitive characteristics of the photosensitive paper used in the embodiment of FIG. 3, and FIG. The figure is a block diagram showing the whole of this embodiment, FIG. 6 is a detailed block diagram of the electronic control circuit,
FIG. 7 is a diagram showing the photosensitive characteristics of photosensitive paper containing microcapsules made of photosensitive resin, and FIG. 8 is a flowchart of the operation in reception mode. In the figure, ], 8.48 is photosensitive pressure sensitive paper (photosensitive recording sheet),
22 is a pressure roller (destruction means), 26,500.50L
+, 50Y is a light source lamp (basic exposure device), 28 is CR
T (light source for image formation), 30 is an imaging optical system, 72.7
5 is a heating roller, and 73 is a heater.

Claims (1)

[Claims] 1. A receiving unit that receives transmitted information; and an exposure unit that selectively exposes a photosensitive recording medium to form a latent image based on the information transmitted via the receiving unit. A facsimile machine comprising: a developing means for developing the latent image; and a thermal fixing means for thermally fixing the received image developed by the developing means, when on standby, the facsimile apparatus is provided with: What is claimed is: 1. A facsimile machine, characterized in that the supply of electric power is stopped and at the time of reception, the facsimile machine is controlled to perform memory reception at least until a heat fixing means reaches a predetermined temperature.