JPS63221767A - Picture recorder - Google Patents

Abstract

PURPOSE:To reduce noise and power consumption by driving a scan motor not immediately after application of power but after a print command is given. CONSTITUTION:At application of power supply VB, the heat of a heater of a heat roll 9 is started and a temperature signal from a temperature sensor 11 is inputted to an input interface 20. When the temperature of the heat roll 9 reaches a prescribed temperature, a READY signal of an output interface 24 goes to 1 and a host section C outputs a signal CMD commanding the print based on the READY signal. A print control section B drives a scan motor 3 via a motor drive section 13 by the signal CMD, a picture signal IMAGE is read from a picture memory 32 of a host section C, a laser drive section 12 is controlled to output a laser beam modulated by the picture signal from the semiconductor laser 1.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an image recording device that reduces noise and power consumption by stopping the drive of a scan motor when a printing operation is not being performed. .

[Conventional technology]

As a conventional image recording device, for example, JP-A-58-12
There is one shown in Publication No. 1066.

FIG. 4 shows a timing chart of this image recording device. When the power is turned on and the RESET signal rises, the scan motor that rotates the rotating polygon mirror is driven. After the rotation speed of the scan motor is stabilized, the heater of the fixing device is activated. The printing operation is controlled so that the printing operation is enabled when the temperature reaches a predetermined temperature and the READY signal becomes "1". This control allows printing with a predetermined image quality.

[Problem that the invention seeks to solve]

However, with conventional image recording devices, the scan motor is driven immediately when the power is turned on, which can result in noisy driving noise, and the scan motor is also driven at times other than printing, resulting in large power consumption. There is a certain inconvenience. The problem of noise increases as the drive frequency of the scan motor increases.

[Means for solving problems]

The present invention has been made in view of the above, and includes a control means for driving the scan motor when the recordable state (ready) is reached. This control means drives the scan motor based on a signal, for example, a print command, output from a control section such as a host computer when the reset state is canceled by turning on the power or the like and the ready state is achieved.

This reduces noise and power consumption.

Hereinafter, the image recording apparatus of the present invention will be explained in detail.

〔Example〕

FIG. 1 shows an embodiment of the present invention, which is comprised of a blink section A, a printer control section B, and a host section C.

The printer section A includes a semiconductor laser 1 that outputs a laser beam modulated according to an image signal, a lens 2 that focuses the laser beam, and a rotating polygon mirror 4 that is rotated by a scan motor 3 to deflect the laser beam. It has a reflective mirror 5 that reflects the deflected laser beam, and a photosensitive drum 6 that is exposed to the reflected laser beam. A developing device 7 and a transfer device 8 are provided around the photosensitive drum 6, and a fixing device 10 having a heating roll 9 is provided downstream of the transfer device 8. The heating roll 9 is provided with a temperature sensor 1), the semiconductor laser 1 is driven by a laser drive unit 12, and the scan motor 3 is driven by a motor drive unit 13. Printer control unit B
are various commands, switch P that turns on the power supply V, turning on and releasing switch SI linked to turning on and releasing switch SI, turning on and releasing switch Sz that selects the control mode of the present invention, temperature signal of temperature sensor 1), host section C An input interface 20 for inputting print commands CMD, etc. from the computer, a ROM 21 for storing various programs, a RAM 22 for temporarily storing data, etc., a CPt 123 for performing predetermined calculations, and an input interface 20 for inputting various control signals and status signals. It has an output interface 24 for outputting. Host part C is input interface 30
, a control section 31, and an image memory 32 storing image signals.
and an output interface 33.

In the above configuration, the operation will be explained based on the timing chart of FIG. 2 and the flowchart of FIG. 3. When the turn-on switch P of the power source (2) is turned on, the switch S1 is turned off and the RESET signal of the input interface 20 of the printer control section B begins to rise. By turning on the power supply V, heating of the heater of the heating roll 9 is started,
Temperature signal is input from temperature sensor 1) to interface 2
Enter 0. When the temperature of the heating roll 9 reaches a predetermined temperature, the READY signal of the output interface 24 changes from "0" to rlJ (12EADY signal depends not only on the heating roll temperature but also on the set state of the recording paper 40, etc. do). Is host part C 1 of “1”? When outputting a signal CMD instructing a print operation based on the HADY signal, the print control unit B drives the scan motor 3 via the motor drive unit 13, and the image memory 3 of the host unit C is
An image signal IMAGE is read out from 2, and the laser drive section 12 is controlled via the print control section B to cause the semiconductor laser 1 to output a laser beam modulated according to the image signal. This laser beam is deflected by a rotating polygon mirror 4, reflected by a reflecting mirror 5, and then reflected by a photoreceptor drum 6.
to expose. The electrostatic latent image formed on the photoreceptor drum 6 is thereby developed into a toner image by the developing device 7. The toner image is transferred onto a recording paper 40 by a transfer device 8, and then transferred to a fixing device 10.
The image is fixed and the print operation ends.

On the other hand, if the switch S2 for selecting the control mode is turned off, the scan motor 3 will be activated immediately when the power is turned on.
is driven. This is the same as the conventional case shown in FIG.

It is also possible to omit the switch S2 and program the control mode described above to be performed automatically.

In the above embodiments, a laser printer is controlled, but the present invention is not limited to this, and can be applied to, for example, a digital copying machine.

〔Effect of the invention〕

As explained above, according to the image recording apparatus of the present invention, the scan motor is not driven immediately after the power is turned on, but is driven when a print command is issued, thereby reducing noise and power consumption. Can be made small.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention. FIG. 2 is a timing chart of one embodiment of the present invention. Third
The figure is a flowchart of one embodiment of the present invention. FIG. 4 is a timing chart of a conventional laser printer control device. Explanation of symbols 1 −・・−・−−−−1−−−−−Semiconductor laser 2−
・−・−・−・−Lens 3−−1 ・−・−・・−Scan motor 4 −−−−
−−・−・−・・One rotation polygon mirror 5−・・・・−・−
Reflection mirror 6--・---------Photoreceptor drum 7---1111----Developing device 8--------------・Transfer device 9---
−−・・−・−・・−Heating roll 10−・−・−1−−
----- Fixed device patent applicant Fuji Xerox Co., Ltd. Agent Patent attorney Hei 1) Tadao Figure 2 Figure 3

Claims (2)

[Claims] (1) In an image recording device that scans a photoreceptor by deflecting a light beam modulated in accordance with an image signal with a rotating polygon mirror, when a print command is not output, the motor that rotates the rotating polygon mirror is driven. An image recording apparatus comprising: a control unit that drives the motor when a print command is output. (2) The control unit executes the prohibited operation only when a control command for prohibiting driving of the motor is output, and drives the motor based on power-on when the control command is not output. An image recording device according to claim 1.