Title:
SCANNING OPTICAL UNIT
Document Type and Number:
Japanese Patent JP3305450
Kind Code:
B2
Abstract:
PURPOSE: To obtain a scanning optical unit in which pitch irregularity and jitter on an image caused by vibration from the vibrating source of an exposure optical system do not occur.
CONSTITUTION: This scanning optical unit 20 is fixed to two beams 30 and 31 being the housing attaching part of a main body by screws 33-35. An fθ lens 5 and a long cylindrical lens 6 are fixed to a housing 10 inside a triangle restricted area 40 surrounded by connecting fixed places by means of the screws 33-35. As to a rotating deflector 3, a bearing part (vibrating source) which supports the rotary shaft 3a of a polygonal motor is fixed to the housing no outside true restricted area 40.
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Inventors:
Hidenari Tatebe
Jun Kousaka
Yoshihiro Inagaki
Jun Kousaka
Yoshihiro Inagaki
Application Number:
JP23266493A
Publication Date:
July 22, 2002
Filing Date:
September 20, 1993
Export Citation:
Assignee:
Minolta Co., Ltd.
International Classes:
B41J2/44; G02B26/10; G02B26/12; (IPC1-7): G02B26/10; B41J2/44
Domestic Patent References:
| JP5150621A | ||||
| JP6262801A |
Attorney, Agent or Firm:
Takekazu Morishita