Title:
光走査装置および画像形成装置
Document Type and Number:
Japanese Patent JP5266798
Kind Code:
B2
Abstract:
A multi-beam scanning device for focusing deflected light beams onto an object to be scanned includes a light source unit, a deflector, a pitch adjustment device, and a conical-shape compression-torsion coil spring. The light source unit is rotatable about an optical axis and includes a plurality of light sources to emit the light beams and a plurality of coupling lenses disposed corresponding to the light sources. The deflector deflects the light beams emitted from the plurality of the light sources and passed through the plurality of the coupling lenses. The pitch adjustment device moves the light source unit in a first direction around the optical axis to adjust a beam pitch. The conical-shape compression-torsion coil spring urges the light source unit in a second direction opposite the first direction around the optical axis as well as in the optical axis direction. An image forming apparatus includes the multi-beam scanning device.
Inventors:
Akito Yoshimaru
Application Number:
JP2008053294A
Publication Date:
August 21, 2013
Filing Date:
March 04, 2008
Export Citation:
Assignee:
株式会社リコー
International Classes:
G02B26/10
Domestic Patent References:
| JP9193458A | ||||
| JP2003317578A | ||||
| JP2004332228A | ||||
| JP2001023590A | ||||
| JP51150319U | ||||
| JP55028021A |
Attorney, Agent or Firm:
Fujita Akira