发明授权
US07671884B2 Rotary drive apparatus, optical scan apparatus, and image formation apparatus
有权
旋转驱动装置，光学扫描装置和图像形成装置
- 专利标题： Rotary drive apparatus, optical scan apparatus, and image formation apparatus
- 专利标题（中）： 旋转驱动装置，光学扫描装置和图像形成装置
-
申请号： US12071578申请日： 2008-02-22
-
公开(公告)号： US07671884B2公开(公告)日： 2010-03-02
- 发明人: Yukio Itami , Kensuke Masuda , Yoshihiro Takahashi , Tomotaka Takamura
- 申请人： Yukio Itami , Kensuke Masuda , Yoshihiro Takahashi , Tomotaka Takamura
- 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： Dickstein Shapiro LLP
- 优先权： JP2007-046276 20070226
- 主分类号： B41J27/00
- IPC分类号： B41J27/00
摘要：
A rotary drive apparatus includes a rotary body with a support portion, a rotor magnet supported by the support portion of the rotary body, a fixation section facing the rotor magnet and rotatably supporting the rotary body, and a winding coil provided in the fixation section, in which an expression E1/E2≦0.75 is satisfied where Young's modulus of the rotor magnet is E1 [GPa], and Young's modulus of the support portion is E2 [GPa].
公开/授权文献
信息查询
IPC分类:
