Title:
OPTICAL SCANNER AND IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2006201510
Kind Code:
A
Abstract:
To suppress the deterioration of picture quality due to the variation in rotation speed of a optical scanning means.
In the image forming apparatus 10 of the present invention, the frequency of an oscillator 76 is decided by preliminarily deciding a PWM clock frequency to be an intermediate value between N times (N is integer) and N+1 times a reference clock frequency for realizing a low speed rotation when a picture is formed under a low speed environment, i.e., at the low speed rotation of the polygon mirror 38, thus the variation in the rotation speed of the polygon mirror 38 is suppressed and the generation of jitter is suppressed.
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Inventors:
ASATANI YASUMASA
Application Number:
JP2005013323A
Publication Date:
August 03, 2006
Filing Date:
January 20, 2005
Export Citation:
Assignee:
FUJI XEROX CO LTD
International Classes:
G02B26/12; B41J2/44; G02B26/10; H04N1/036; H04N1/113; H04N1/23
Domestic Patent References:
| JP2003204692A | 2003-07-18 | |||
| JP2001154443A | 2001-06-08 | |||
| JPH0847284A | 1996-02-16 | |||
| JPH10215592A | 1998-08-11 |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda