| 发明名称 |
Developing device, and image forming apparatus provided with the same |
| 摘要 |
A developing device supplies a developer to a photosensitive drum, which has a cylindrical shape, and is rotatable around an axis thereof for forming an electrostatic latent image on the circumferential surface thereof. The developing device is provided with a developing roller. The developing roller is disposed to face the photosensitive drum, and has a cylindrical shape. The developing roller is rotatable around an axis thereof for carrying a developer on the circumferential surface thereof. The developing roller is provided with a small diameter portion. The small diameter portion is a part of the circumferential surface of the developing roller. The small diameter portion extends from an axial end of the developing roller axially inward by a predetermined length, and has an outer diameter smaller than an axially middle portion of the developing roller. |
| 申请公布号 |
US9285713(B2) |
申请公布日期 |
2016.03.15 |
| 申请号 |
US201514680147 |
申请日期 |
2015.04.07 |
| 申请人 |
KYOCERA Document Solutions Inc. |
发明人 |
Saito Sakae;Sakai Hiroaki;Watanabe Yukimasa;Oishi Yasuhiro;Fujishima Masashi;Ishihara Chikara;Tauchi Yasuhiro |
| 分类号 |
G03G15/09;G03G15/08 |
主分类号 |
G03G15/09 |
| 代理机构 |
|
代理人 |
Hespos Gerald E.;Porco Michael J.;Hespos Matthew T. |
| 主权项 |
1. A developing device for supplying a developer to a photosensitive drum, which has a cylindrical shape, and is rotatable around an axis thereof for forming an electrostatic latent image on a circumferential surface thereof, comprising:
a developing roller disposed to face the photosensitive drum, the developing roller having a cylindrical shape, and being rotatable around an axis thereof for carrying a developer on a circumferential surface thereof, the developing roller including a cylindrical base member and a flange portion to be mounted in an axial end of the base member, the flange portion having a press-fitting portion to be pressed in an inner periphery of the base member, wherein the developing roller is provided with a small diameter portion formed at the axial end of the base member, the small diameter portion being a part of the circumferential surface of the developing roller, the small diameter portion extending from an axial end of the developing roller axially inward by a predetermined length and an axial length of the small diameter portion being longer than an axial length of the press-fitting portion, the small diameter portion having an outer diameter smaller than an axially middle portion of the developing roller. |
| 地址 |
JP |
