发明名称 Optical writing device and image forming apparatus
摘要 An electrophotographic optical writing device equipped with a semiconductor laser includes the semiconductor laser, a collimating lens, an aperture, a cylindrical lens, and a polygon scanner. An additional aperture, a second aperture, is provided in a light path between the semiconductor laser and the collimating lens.
申请公布号 US7782354(B2) 申请公布日期 2010.08.24
申请号 US20080073312 申请日期 2008.03.04
申请人 RICOH COMPANY, LIMITED 发明人 YAMAZAKI KOZO
分类号 B41J15/14;B41J27/00 主分类号 B41J15/14
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