发明授权
- 专利标题： Scanning unit and image forming apparatus
- 专利标题（中）： 扫描单元和图像形成装置
-
申请号： US11877020申请日： 2007-10-23
-
公开(公告)号： US07545547B2公开(公告)日： 2009-06-09
- 发明人: Yoshinori Hayashi , Nobuaki Kubo , Naoto Watanabe , Daisuke Ichii
- 申请人： Yoshinori Hayashi , Nobuaki Kubo , Naoto Watanabe , Daisuke Ichii
- 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： JP2006-290030 20061025
- 主分类号： G02B26/08
- IPC分类号： G02B26/08
摘要：
A scanning optical system leads the light fluxes deflected by the polygon mirror to a photosensitive drum. An absolute value of a lateral magnification in a main scanning direction is larger than an absolute value of a lateral magnification in a sub-scanning direction. Moreover, a beam diameter in the sub-scanning direction on a surface of the photosensitive drum is equal to or smaller than a beam diameter in the main scanning direction and larger than a scan line interval.
公开/授权文献
- US20080100895A1 SCANNING UNIT AND IMAGE FORMING APPARATUS 公开/授权日：2008-05-01
信息查询
