Invention Grant
- Patent Title: Optical writing device and image forming apparatus
- Patent Title (中): 光写入装置和图像形成装置
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Application No.: US12073312Application Date: 2008-03-04
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Publication No.: US07782354B2Publication Date: 2010-08-24
- Inventor: Kozo Yamazaki
- Applicant: Kozo Yamazaki
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Limited
- Current Assignee: Ricoh Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2007-054854 20070305
- Main IPC: B41J15/14
- IPC: B41J15/14 ; B41J27/00
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.
Public/Granted literature
- US20080219704A1 Optical writing device and image forming apparatus Public/Granted day:2008-09-11
Information query
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