Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for controlling image-forming apparatus

An image and temperature control technology, applied in image communication, instrumentation, printing, etc., can solve problems such as the difficulty in controlling the temperature change of the light deflector

Inactive Publication Date: 2008-12-17
CANON KK
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to control the temperature change of the light deflector due to the modulation of the deflected light using the above-mentioned conventional techniques

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for controlling image-forming apparatus
  • Method for controlling image-forming apparatus
  • Method for controlling image-forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0023] A first embodiment of the present invention is described below with reference to the drawings. figure 1 is a block diagram for explaining the method of controlling the image forming apparatus according to this embodiment. In this embodiment, the light deflector 10 includes a movable plate (or an oscillator), a support substrate, and an elastic support member for supporting the movable plate to rotatably twist relative to the support substrate. The optical deflector 10 deflects modulated light from a laser source 20 serving as a semiconductor laser capable of performing direct modulation. The light deflector 10 is driven and controlled by a drive control unit 31 of the control unit 30 . The laser light source 20 is modulated and driven by a light source control unit 32 of the control unit 30 having modulation components. The light source control unit 32 has a function of converting drawing data acquired from the outside into a modulation signal, and modulating and driv...

no. 2 example

[0031] Next, a second embodiment of the present invention will be described with reference to the drawings. Figure 5 is a block diagram for explaining the method of controlling the image forming apparatus according to this embodiment. exist Figure 5In this example, the light deflector 10, the drawing laser light source 21, and the drive control unit 31 of the control unit 30 correspond to those of the first embodiment.

[0032] In this embodiment, in order to correct the resonance frequency shift of the optical deflector 10 caused by the change in the irradiation amount of the light modulated according to the drawing data, the optical deflector is controlled so that the light from the temperature compensating laser source 22 (different from the drawing laser source 21) The light irradiates the light deflector 10 , and the total power of the light irradiating the light deflector 10 is constant at a predetermined power within the unit compensation time 44 .

[0033] In other...

no. 3 example

[0036] Next, a third embodiment of the present invention will be described with reference to the drawings. Figure 7 is a block diagram for explaining the method of controlling the image forming apparatus according to this embodiment. In this embodiment, the optical deflector 10, the laser light source 20, and the drive control unit 31 of the control unit 30 correspond to those of the first embodiment. The light source control unit 32 only has a function of converting drawing data acquired from the outside into a modulation signal and then modulating and driving the laser light source 20 according to the modulation signal. The temperature control unit 33 of the control unit 30 controls the temperature of the light deflector 10 according to the modulation signal by using the heating element (temperature control element) 60 .

[0037] In this embodiment, the temperature control element 60 is mounted next to the light deflector 10 . More specifically, the heater is mounted on t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Even in an image-forming apparatus including an optical deflection apparatus using a light source such as a high-power laser light source, a variation in temperature of an optical deflector due to modulation of deflected light based on drawing data is compensated to maintain a preferable oscillation state of the optical deflection apparatus. The optical deflection apparatus includes an optical deflector in which an oscillator is supported by an elastic support member to be oscillatable about a support substrate and at least one light source, and the optical deflection apparatus is controlled such that total power of light emitted from the light source to the optical deflector within each of a plurality of divided time regions corresponding to specific times of equal lengths becomes a predetermined power. A changed temperature of the optical deflector which is caused due to a variation in power of light emitted from the light source to the optical deflector may be corrected by a temperature control element based on the power of the light emitted from the light source to the optical deflector within the specific time to control the optical deflection apparatus.

Description

technical field [0001] The present invention relates to a method of controlling a light deflecting device comprising an oscillator which may be formed using, for example, techniques related to the field of microstructure technology. In particular, the present invention relates to a method of controlling an image forming device using a light deflecting device, such as a scanning display, a laser printer, or a digital copier. Background technique [0002] So far, various light deflecting devices in which optical mirrors resonate have been proposed. Compared with a light scanning optical system using a polygonal rotating mirror such as a polygon mirror, the resonance type light deflecting device has the following features: the size of the light deflecting device can be significantly reduced; the power consumption is small because of a high Q value; theoretically no optical Optical face tangle error; a light deflecting device made of single crystal silicon fabricated by a speci...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/10B41J2/44H04N1/036H04N1/113
Inventor 藤井一成岛田康弘
Owner CANON KK