- 专利标题: Optical scanner and image forming device incorporating same
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申请号: US14643122申请日: 2015-03-10
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公开(公告)号: US09864296B2公开(公告)日: 2018-01-09
- 发明人: Tomoya Fujii , Tadashi Nakamura , Nobuyuki Arai , Yoshinobu Sakaue , Noboru Kusunose , Daisuke Imaki
- 申请人: Tomoya Fujii , Tadashi Nakamura , Nobuyuki Arai , Yoshinobu Sakaue , Noboru Kusunose , Daisuke Imaki
- 申请人地址: JP Tokyo
- 专利权人: RICOH COMPANY, LTD.
- 当前专利权人: RICOH COMPANY, LTD.
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2014-053495 20140317; JP2014-214071 20141020
- 主分类号: G03G15/043
- IPC分类号: G03G15/043 ; G02B26/12 ; G03G15/04
摘要:
An optical scanner includes a light source including a plurality of light emitting elements, a polygon mirror which deflects light from the light source for scanning a surface of a subject, an optical element arranged between the light source and the polygon mirror, having optical power in a sub scanning direction, a synchronous detector which detects the light deflected by the polygon mirror for synchronous detection and generates a signal for controlling a timing at which the scanning of the surface is started, and a fixing element which secures one end of the optical element. The light emitting elements of the light source are aligned with a certain tilt angle relative to the sub scanning direction. Light from one of the light emitting elements disposed closest to the fixing element in a main scanning direction is used for synchronous detection.
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