Title:
現像装置、電子写真プロセスカートリッジ及び電子写真画像形成装置
Document Type and Number:
Japanese Patent JP6891065
Kind Code:
B2
Abstract:
The developing apparatus includes: a developing roller rotatable in a first rotation direction; and a developer regulating member, wherein the developing roller includes: a substrate; an electro-conductive elastic layer on the substrate; and insulating domains on the electro-conductive elastic layer, wherein the electro-conductive elastic layer has a certain Martens hardness, the developing roller has a surface including surfaces of the insulating domains and a surface of the electro-conductive elastic layer, which is uncovered with the insulating domains at a certain area ratio, wherein the developer regulating member comprises: an abutting portion which is in contact with the surface of the developing roller, and a certain projection portion extending to an upstream side from the abutting portion in the first rotation direction, the developing apparatus has a certain gap between a side of the projection portion facing to the developing roller, and the surface of the developing roller.
Inventors:
Ryo Sugiyama
Yuji Sakurai
Yoshihiro Ogawa
Kazutoshi Ishida
Mitsuru Okuda
Yuji Sakurai
Yoshihiro Ogawa
Kazutoshi Ishida
Mitsuru Okuda
Application Number:
JP2017138092A
Publication Date:
June 18, 2021
Filing Date:
July 14, 2017
Export Citation:
Assignee:
Canon Inc
International Classes:
G03G15/08
Domestic Patent References:
| JP2008293002A | ||||
| JP8286497A | ||||
| JP2016164654A |
Foreign References:
| WO2013128551A1 |
Attorney, Agent or Firm:
Akio Miyazaki
Masaaki Ogata
Masaaki Ogata