Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kozo Yamazaki0
Date of Patent
August 24, 2010
Patent Application Number
12073312
Date Filed
March 4, 2008
Patent Primary Examiner
Patent abstract
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.
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