Cleaning member for image forming apparatus, charging device, unit for image forming apparatus, process cartridge, image forming apparatus

摘要

A cleaning member for an image forming apparatus, includes a core, a foamed elastic layer disposed by winding a strip-shaped foamed elastic member on an outer peripheral surface of the core in a helical form so as to extend from one end of the core to the other end, and a bonding layer for bonding the core and the foamed elastic layer together, wherein the area of a region within a surface at one or both ends at least in a longitudinal direction of the foamed elastic layer on a side facing the outer peripheral surface of the core, contacting the outer peripheral surface of the core via the bonding layer is substantially 35% or more by area ratio per unit area.

主权项

1. A cleaning member for an image forming apparatus, comprising:
a core including an outer peripheral surface; an elastic layer comprising:
(i) a strip-shaped foamed elastic member wound on the outer peripheral surface of the core in a helical form at spaced intervals so as to extend from one end of the core to the other end;(ii) two ends in a longitudinal direction; and(iii) an inner surface comprising a concave-convex shape that faces the outer peripheral surface of the core; and a bonding layer that bonds the core and the elastic layer together, wherein, at a region of the inner surface at one or both of the two ends of the elastic layer, a percentage of an area of apexes of convex portions of the inner surface bonded to the outer peripheral surface of the core via the bonding layer is substantially 35% or more by area ratio per unit area.