Invention Grant
- Patent Title: Developing member, process cartridge and electrophotographic image forming apparatus
- Patent Title (中): 显影构件,处理盒和电子照相成像装置
-
Application No.: US13886085Application Date: 2013-05-02
-
Publication No.: US08774677B2Publication Date: 2014-07-08
- Inventor: Yuji Sakurai , Masaki Yamada , Genya Anan
- Applicant: Canon Kabushiki Kaisha
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2011-288329 20111228; JP2012-267390 20121206
- Main IPC: G03G15/08
- IPC: G03G15/08 ; C08G18/06

Abstract:
The present invention provides a developing member onto which a toner or the like is hard to fuse and with which toner conveying performance is unlikely to vary even through long-term usage. The developing member includes a substrate and a surface layer, the surface layer contains a polyurethane resin working as a binder resin and polyurethane resin particles dispersed in the binder resin, and the polyurethane resin working as the binder resin has, between two adjacent urethane bonds, a structure represented by a structural formula (1) and one or both of structures represented by structural formulas (2) and (3), and further has, between two adjacent urethane bonds, a structure represented by a structural formula (4).
Public/Granted literature
- US20130243480A1 DEVELOPING MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS Public/Granted day:2013-09-19
Information query