发明授权
- 专利标题: Image forming apparatus
- 专利标题(中): 图像形成装置
-
申请号: US13344022申请日: 2012-01-05
-
公开(公告)号: US08824938B2公开(公告)日: 2014-09-02
- 发明人: Kanji Nakayama , Masayasu Haga , Tomohisa Yoshida , Wataru Onoda , Narutaka Yoshida , Noboru Ito
- 申请人: Kanji Nakayama , Masayasu Haga , Tomohisa Yoshida , Wataru Onoda , Narutaka Yoshida , Noboru Ito
- 申请人地址: JP Chiyoda-Ku, Tokyo
- 专利权人: Konica Minolta Business Technologies, Inc.
- 当前专利权人: Konica Minolta Business Technologies, Inc.
- 当前专利权人地址: JP Chiyoda-Ku, Tokyo
- 代理机构: Buchanan Ingersoll & Rooney PC
- 优先权: JP2011-002127 20110107
- 主分类号: G03G15/08
- IPC分类号: G03G15/08 ; G03G15/09
摘要:
An image forming apparatus, wherein the packing density at a closest point where the first peripheral surface and the second peripheral surface are the closest to each other is within a range from 0.3 to 0.4; wherein a maximum magnetic flux density of a principal magnetic pole for generating the magnetic field for development is located in an upstream side from the closest point with respect to the specified direction and at a point where the packing density is equal to or greater than 0.2; and wherein a magnetic flux density of the principal magnetic pole at a point where the packing density is 0.2 in a downstream side from the closest point with respect to the specified direction is equal to or less than ½ of a magnetic flux density of the principal magnetic pole at a point where the packing density is 0.2 in the upstream side.
公开/授权文献
- US20120177416A1 IMAGE FORMING APPARATUS 公开/授权日:2012-07-12