Patent · US Active

Charging member, process cartridge and electrophotographic apparatus

US8092358B2 · kind B2 · utility

10Cited by

4References

5Claims

0Family size

Assignee

Canon Kabushiki Kaisha · JP

Inventors

Yoko Kuruma · Mishima, JP
Noriaki Kuroda · Soma, JP
Noriko Nagamine · Soma, JP

Key dates

Filing date	Apr 5, 2011
Grant date	Jan 10, 2012
Priority date	—
Expiry date	Apr 5, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG03G15/0233
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The present invention provides a charging member which can maintain excellent wear resistance even though being used repeatedly. In the charging member having a surface layer, the surface layer is a surface layer constituted by at least one selected from silsesquioxanes having structures represented by a compound (1), a compound (2), a compound (3), a compound (4), a compound (5) and a compound (6), and a polysiloxane having a first unit represented by SiO0.5R1(OR2)(OR3), a second unit represented by SiO1.0R4(OR5) and a third unit represented by SiO1.5R6, wherein the silsesquioxane is contained in the polysiloxane.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.