发明授权
- 专利标题: Image forming apparatus
- 专利标题(中): 图像形成装置
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申请号: US11505364申请日: 2006-08-17
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公开(公告)号: US07557823B2公开(公告)日: 2009-07-07
- 发明人: Rumiko Ono , Hiroshi Yoshizawa
- 申请人: Rumiko Ono , Hiroshi Yoshizawa
- 申请人地址: JP Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权: JP2005-241118 20050823; JP2006-192887 20060713
- 主分类号: B41J2/47
- IPC分类号: B41J2/47
摘要:
An image forming apparatus including a light source unit configured to emit a light beam, an optical deflector configured to generate a scanning light beam from the light beam of the light source unit, an optical writer having an optical system configured to guide the scanning light beam from the optical deflector onto a surface to be scanned of image carriers and forming an image thereon: and a memory unit to store a plurality of shading correction data that is configured to correct a light shading caused by a light loss between the light beam and the scanning light beam due to accumulation of dirt on the optical deflector.
公开/授权文献
- US20070046766A1 Image forming apparatus 公开/授权日:2007-03-01