Invention Grant
US07643046B2 Laser beam scanning device, image forming apparatus, and laser beam detecting method by the laser beam scanning device
失效
激光束扫描装置，图像形成装置和激光束扫描装置的激光束检测方法
- Patent Title: Laser beam scanning device, image forming apparatus, and laser beam detecting method by the laser beam scanning device
- Patent Title (中): 激光束扫描装置，图像形成装置和激光束扫描装置的激光束检测方法
-
Application No.: US11612750Application Date: 2006-12-19
-
Publication No.: US07643046B2Publication Date: 2010-01-05
- Inventor: Shigeaki Imai , Mitsuo Suzuki
- Applicant: Shigeaki Imai , Mitsuo Suzuki
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2005-367434 20051221; JP2006-046337 20060223; JP2006-253373 20060919
- Main IPC: B41J2/435
- IPC: B41J2/435 ; B41J2/47
Abstract:
A laser beam scanning device is disclosed. The laser beam scanning device includes a diffraction optical element which forms a pattern of a diffraction image including two images extending in a direction corresponding to the sub scanning direction and one image extending in a direction inclined by θ (0
Public/Granted literature
Information query
IPC分类:
