Charging member, process cartridge, and electrophotographic apparatus

摘要

Provided are a charging member capable of maintaining excellent wear resistance even after repeated use, and a process cartridge and an electrophotographic apparatus each having the charging member. The charging member is characterized in that its surface layer has a polysiloxane to which a silsesquioxane is bonded.

主权项

1. A charging member, comprising:
a support; and a surface layer, wherein the surface layer comprises a polysiloxane bonded to a compound through a linking group, wherein the polysiloxane has at least one unit represented by the following formula (A): wherein the compound to which the polysiloxane is bonded is represented by one of the following formulas (1) to (6):where at least one of R101 to R106 represents a group which reacts with R0 to form the linking group; and any others of R101 to R106 which do not react with R0 to form the linking group each independently represent a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group;where at least one of R201 to R208 represents a group which reacts with R0 to form the linking group; and any others of R201 to R208 which do not react with R0 to form the linking group each independently represent a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group;where at least one of R301 to R308 represents a group which reacts with R0 to form the linking group; and any others of R301 to R308 which do not react with R0 to form the linking group each independently represent a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group;where at least one of R401 to R412 represents a group which reacts with R0 to form the linking group; and any others of R401 to R412 which do not react with R0 to form the linking group each independently represent a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group;where at least one of R501 to R514 represents a group which reacts with R0 to form the linking group; and any others of R501 to R514 which do not react with R0 to form the linking group each independently represent a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; orwhere at least one of R601 to R616 represents a group which reacts with R0 to form the linking group; and any others of R601 to R616 which do not react with R0 to form the linking group each independently represent a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group.