JPH0832733A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To eliminate the waste of electric power by detecting a signal which makes possible the image recording of at least a 1st page after termination and driving the heater of a fixing unit. CONSTITUTION:When a calling terminal (communication side) dials and a called terminal terminates and detects no calling tone signal from the calling terminal, a ring-back tone is sent out since the origination side is not a facsimile, and a talk is possible once an off-hook state is entered. The ring-back tone is continuously sent out while the off-hook operation is not done and the called terminal follows a facsimile communication procedure a certain time later or when a CNG signal is detected, thereby showing the transmitting receiving function of the called terminal to the calling terminal. The moment a digital instruction signal specifying a function that the calling terminal selects to the called terminal is received by the called terminal, a CPU 30 outputs a heater driving signal to a recording part B, which starts heat-up operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heater control for a facsimile which requires thermal fixing after transferring image data on a recording sheet by an electrophotographic recording method.

[0002]

2. Description of the Related Art Conventionally, there are thermal recording, ink jet, thermal transfer, electrophotographic recording and the like as a recording system of a facsimile apparatus, and the electrophotographic recording system has a recording speed and a high quality recording on plain paper. Usage is expanding.
In this electrophotographic recording method, a drum, which is a photoconductor, is charged and exposed by a laser, an LED, or the like to form an electrostatic latent image that matches the image, and toner is attached to the electrostatic latent image portion to develop it. The developed image is transferred onto recording paper and fixed by a fixing device. This fixing device applies heat from a heating wire or a halogen lamp to fuse the toner to the recording paper.
Therefore, normally, the heater is not energized and stands by, and when it is received, the fixing device is heated up to prepare for fixing.

[0003]

Since the fixing device applies heat to the roller to fix the roller, the power consumption is relatively large in order to raise the temperature of the roller, and the heat-up timing is started by the incoming call. . However, even if an error such as a wrong phone call or reception procedure occurred and images could not be received normally and could not be recorded, heatup was done, so heatup wasted and power wasted. is there. Therefore, the present invention aims to avoid unnecessary power consumption by heating up only when an image is correctly received.

[0004]

SUMMARY OF THE INVENTION The problems to be solved by the present invention are as described above, and in order to solve the problems, a facsimile apparatus which requires heat fixing in an electrophotographic recording system, and which is based on a communication protocol is used. Means for transmitting and receiving a signal, and a means for driving the heater of the fixing device by detecting a signal enabling the image recording of at least the first page after the incoming call. Alternatively, a means for driving the heater of the fixing device by detecting the procedure signal from the calling terminal or the image data signal is provided. Alternatively, a means for driving the heater of the fixing device after detecting the end of the image reception of the first page is provided.

[0005]

By using such means, the heat does not heat up at the same time as the incoming call, and the heater of the fixing device is energized to heat up and rise to a predetermined temperature only after the transmission / reception by the facsimile device is confirmed. Printing is possible.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall side sectional view of a facsimile, FIG. 2 is a block diagram showing a circuit configuration of a facsimile apparatus of the present invention,
FIG. 3 is a diagram showing a signal sequence, and FIG. 4 is a flowchart of an operation for performing heat-up.

In FIG. 1, a reading section A is arranged in the front part of a main body case 1 of a facsimile apparatus, a recording (printing) part B is arranged in the rear part thereof, and an operation panel 2 is arranged on the front upper surface of the main body case 1. It is arranged. A document discharge tray 3 is arranged at the rear part of the operation panel 2, a document supply tray 4 is arranged at the rear part thereof, and a recording paper discharge part 5 is formed at the rear part thereof.

In the reading section A, a separation roller 6 is arranged at the front of the document supply tray 4, and the separation rollers 6 are fed one by one from the bottom. The timing roller 7 at the front of the separation roller 6 adjusts the timing to read by an image sensor or the like. The image is read by the device 9. The reading device 9 applies the light of the light source 8 to the document and reflects the reflected light on the mirrors 10, 10, 10.
It is read by the reading device 9 through the lens. Then, the paper is discharged to the document discharge tray 3 by the paper discharge roller 11.

The recording section B is arranged around the photosensitive drum 12,
Charger 13, exposure device 14, developing device 15, transfer device 16,
A cleaner 17 is arranged, while a paper feed cassette 20 is arranged below the recording section B, and a paper feed roller 21 at the rear portion is rotated to move the uppermost recording paper to a timing roller 22 above it.
Be transported to. Further, a guide roller 23 is disposed in front of the timing roller 22 so as to face the photosensitive drum 12, and a fixing roller 24 and a pressing roller 25 are disposed in front of the timing roller 22 so as to face each other. A paper discharge roller 26 is arranged in the front.

In such a structure, when receiving and printing out, the recording paper is conveyed to the timing roller 22 by the rotation of the paper feed roller 21, and at the same time, the photosensitive drum 12 is charged while the photosensitive drum 12 is rotated. 13 is charged, an optical image of data sent from an exposure device 14 including an LED is exposed to form an electrostatic latent image, and a developing device 15 attaches toner to develop the image.
When the timing roller 22 is driven, the leading edge of the image and the leading edge of the recording sheet are aligned, and the transfer device 16 transfers the image onto the recording sheet.
The photosensitive drum 12 is cleaned by the cleaner 17, the recording paper is conveyed, the toner is fixed on the recording paper by the fixing roller 24 and the pressing roller 25, and the toner is conveyed as it is and ejected to the recording paper ejecting section 5 by the ejecting roller 26. Is done.

The control circuit configuration of the facsimile is shown in FIG.
CP to control the entire facsimile, as shown in
U (Central Processing Unit) 30, ROM (Read Only Memory) 31, RAM (Random Access Memory) 3
2, image memory 33, operation unit 3 on the operation panel 2
4, a recording unit B, a modem 35, etc. are connected.

The ROM 31 stores a control program, and also stores signals based on a protocol (communication protocol). The RAM 32 temporarily reads an input signal from the operation unit 34, a command signal, a signal from a line, etc., and the modem 35 is connected to a telephone line 37 via an NCU (network control unit) 36 to modulate and demodulate transmitted / received data. And means for sending and detecting command signals and the like. Further, the CPU 30 uses the R
It also serves as means for executing the control program of the OM31, calculating signals to be transmitted and received, and controlling the operation of the heater 39. In the recording section B, the rotation driving section of the photosensitive drum 12 and
Charger 13, exposure device 14, developing device 15, transfer device 16,
The drive unit of the fixing roller 24, the heater 39 and the temperature sensor 38 arranged in the fixing roller 24 are connected to the CPU, and their respective operations are controlled.

In the configuration of such a facsimile apparatus, the heat-up (heater 39 operation) start timing of the present invention in the signal sequence will be described with reference to FIG. 3 and FIG. Conventionally, when the called terminal receives a call, the fixing device starts to heat up at this point, but the present invention does not heat up. At this time, if the called terminal does not detect a calling tone (CNG) signal from the calling terminal (S1), since the calling side is not a facsimile machine, it sends a ring back tone (S2) and goes off hook (S3). ), A call can be made (S4), a ring back tone is continuously sent without being off-hook, and a predetermined time has elapsed (S5), or if a CNG signal is detected in step S1, the facsimile communication procedure is started and the called terminal is called. The identification signal (CED) and the digital identification signal (DIS) are successively transmitted (S6), and the calling terminal shows the transmitting / receiving function of the called terminal.

When the called terminal receives a digital command signal (DCS) for designating the function selected by the calling terminal to the called terminal (S7), the CPU is activated at the time when this signal is detected.
30 outputs a heater drive signal to the recording unit B, and heat-up is started (S8). However, this heat-up start time is the first embodiment, and the start time can be set several times before printing, as described later.

Then, a training signal is transmitted from the calling terminal and a training check signal (TCF) is subsequently transmitted (S9). If the training is not successful at this time, a training failure signal (FT) is sent.
T) is transmitted (S10) and retraining is requested. When the adjustment by training is completed, a reception preparation confirmation signal (CFR) is transmitted (S11), and the step S
When not heating up in 8, heat up (S11 ') may be performed after this CFR transmission (second embodiment).

In the case of high-speed communication, the training before image reception is transmitted from the calling terminal (S12), and when the training fails, an error (S13) occurs and an alarm is issued, and if the training succeeds, the above steps are performed. Heat-up is performed when heat-up is not performed in S8 and step S11 '(S12') (third embodiment). Subsequently, the image signal (PIX) is transmitted from the calling terminal, the called terminal stores it in the image memory 33, and when the transmission of one page is completed, the control return signal (RTC) is transmitted from the calling terminal (S14). , When the RTC signal is received, the steps S8 and S1 are performed.
If neither 1'or S12 'has been heated up, heat up is performed (S14') (fourth embodiment).

If the RTC signal is received and there is a document to be transmitted, the multi-page signal (MPS) is received, and if not, the procedure end signal (EOP) is received (S1).
5) When the EOP signal is received, the step S
If none of S8 ', S11', S12 ', and S14' is heated up, heat up is performed (S1.
5 ') (fifth embodiment). If the image quality sent is bad (S1
6) A retraining negative signal (RTN) is sent (S17), the process returns to step S7, and if the image quality is good, the confirmation signal (MCF) is sent (S18). At this time, the steps S8, S11 ′, S12 ', S14', S
If none of 15 'is heated up, it is heated up (S18') (sixth embodiment).

Then, the temperature of the heater 39 is detected by the temperature sensor 38, and when the temperature reaches a predetermined temperature (S19), printing is started (S20). If there is a transmission original, the process returns to step S9 and the above procedure is repeated. When the procedure end signal (EOP) is received and the confirmation signal (MCF) is transmitted, the disconnection command signal (DCN) is received. Then, the telephone line was cut off and the heat up time was late (S11 ', S12', S14 ', S15', S
If there are not many originals at the time of 18 '), only printing is continued. When printing is completed (S21), the heater is turned off (S22), and the receiving process is completed.

[0019]

Since the present invention is constructed as described above, it has the following effects. That is, since it is configured as in claim 1, the heat-up is not performed unless the image is received, such as when the incoming call is a telephone call, the power is not wasted, and when the heater is a lamp, the number of times of lighting is increased. It was possible to reduce the number and extend the life.

According to the second aspect of the present invention, since the transmission side heats up after receiving the procedure signal or the image reception, which is an indication of the intention of the image transmission, the communication error may occur even after the reception. , Even in this case, there is no need to heat up wastefully. In addition, it is possible to heat up early before the completion of image reception, and the time lag can be kept short.

According to the third aspect of the present invention, since the received image is heated up after the reception of the image is completed, the heat up is not wasted even if an error occurs during the image reception.

[Brief description of drawings]

FIG. 1 is an overall side sectional view of a facsimile.

FIG. 2 is a block diagram showing a circuit configuration of a facsimile apparatus of the present invention.

FIG. 3 is a diagram showing a signal sequence.

FIG. 4 is a flowchart of an operation for performing heat-up according to the present invention.

[Explanation of symbols]

 24 Fusing Roller 30 CPU 31 ROM 38 Temperature Sensor 39 Heater

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication H04N 1/032 B 1/23 103 Z

Claims (3)

[Claims] 1. A facsimile apparatus having a heat fixing device, wherein means for transmitting and receiving a signal based on a communication protocol, and a signal enabling image recording of at least the first page after receiving a call are detected and fixed. Facsimile machine equipped with a means to drive the heater of the container. 2. A facsimile apparatus having a heat fixing device, which transmits and receives a signal based on a communication protocol, and detects a procedure signal from a calling terminal or an image data signal after receiving a call. And a facsimile device provided with means for driving the heater of the fixing device. 3. A facsimile apparatus having a heat fixing device, and means for transmitting and receiving signals based on a protocol,
A facsimile machine provided with means for driving the heater of the fixing device after detecting the end of image reception of the first page after receiving a call.