Title:
光走査装置及び画像形成装置
Document Type and Number:
Japanese Patent JP7293004
Kind Code:
B2
Abstract:
An optical device includes a first light source emitting a first beam, a second light source emitting a second beam and arranged upstream in a scanning direction, a diaphragm including an opening passing portions of the first beam, the first portion having a first width from the light axis of the first beam on the upstream side, the second portion having a second width from the light axis on the downstream side, the first width narrower than the second width, and an opening passing portions of the second beam, the first portion having a third width from the light axis of the second beam on the upstream side, the second portion having a fourth width from the second light axis on the downstream side, the third width wider than the fourth width, and a deflector deflecting on a surface thereon the beams at positions shifted in a sub scanning direction.
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| WO/2012/131015 | FLAT FIELD TELECENTRIC SCANNER WITH DIFFRACTION LIMITED PERFORMANCE |
| JP6127238 | Scanning optical system |
Inventors:
Ren Kuribayashi
Application Number:
JP2019122962A
Publication Date:
June 19, 2023
Filing Date:
July 01, 2019
Export Citation:
Assignee:
Toshiba Tec Corporation
International Classes:
G02B26/12; G02B26/10
Domestic Patent References:
| JP2017097012A | ||||
| JP2009069595A | ||||
| JP2019105804A | ||||
| JP2000028944A | ||||
| JP6290293A |
Foreign References:
| US20060227403 | ||||
| US20090051996 |
Attorney, Agent or Firm:
Patent Attorney Corporation Suzue Patent General Office
Masatoshi Kurata
Nobuhisa Nogawa
Takashi Mine
Naoki Kawano
Tadashi Inoue
Sanae Kaneko
Masatoshi Kurata
Nobuhisa Nogawa
Takashi Mine
Naoki Kawano
Tadashi Inoue
Sanae Kaneko