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CN104737057A 光扫描装置和具备该光扫描装置的图像形成装置 失效 - 权利终止

  • Patent Title: 光扫描装置和具备该光扫描装置的图像形成装置
  • Patent Title (English): Light scanning device and image formation apparatus provided therewith
  • Application No.: CN201380054353.3
    Application Date: 2013-10-15
  • Publication No.: CN104737057A
    Publication Date: 2015-06-24
  • Inventor: 白井伸弘
  • Applicant: 夏普株式会社
  • Applicant Address: 日本大阪府
  • Assignee: 夏普株式会社
  • Current Assignee: 夏普株式会社
  • Current Assignee Address: 日本大阪府
  • Agency: 北京尚诚知识产权代理有限公司
  • Agent 龙淳; 池兵
  • Priority: 2012-230098 2012.10.17 JP
  • International Application: PCT/JP2013/077955 2013.10.15
  • International Announcement: WO2014/061656 JA 2014.04.24
  • Date entered country: 2015-04-17
  • Main IPC: G02B26/10
  • IPC: G02B26/10 ;  B41J2/44 ;  H04N1/113
光扫描装置和具备该光扫描装置的图像形成装置
Abstract:
本发明的光扫描装置具备：出射光束(L1)的第一半导体激光器(44a)；使光束(L1)偏向的多面反射镜(42)；对由多面反射镜(42)偏向后的光束(L1)进行反射以使其入射到感光鼓(13)的反射镜(64a)；和检测由多面反射镜(42)偏向后的光束(L1)的BD传感器(72)，利用光束(L1)扫描感光鼓(13)，根据BD传感器(72)检测到光束(L1)的检测时刻，设定光束(L1)扫描感光鼓(13)的扫描时刻，上述光扫描装置的特征在于：BD传感器(72)配置在与在即将入射到感光鼓(13)前对光束(L1)进行反射的最后级的反射镜(64a)相比远离多面反射镜(42)的位置，并且配置在与感光鼓(13)的有效扫描区域对应的光束(L1)的扫描角度范围(α)的内侧。
Abstract(English):

A light scanning device is provided with: a first semiconductor laser (44a) for emitting a light beam (L1); a polygon mirror (42) for deflecting the light beam (L1); a reflecting mirror (64a) for reflecting the light beam (L1) deflected by the polygon mirror (42) to a photoreceptor drum (13) and causes the light beam to be incident thereon; and a BD sensor (72) for detecting the light beam (L1) deflected by the polygon mirror (42), scans the photoreceptor drum (13) with the light beam (L1), and sets the timing of scanning of the photoreceptor drum (13) with the light beam (L1) on the basis of the timing of detection of the light beam (L1) by the BD sensor (72). The BD sensor (72) is disposed at a position more apart from the polygon mirror (42) than the final-stage reflecting mirror (64a) for reflecting the light beam (L1) immediately before incidence on the photoreceptor drum (13), and within the scanning angle range (alpha) of the light beam (L1) which corresponds to the effective scanning region of the photoreceptor drum (13).

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