Developing member, method of producing the same, process cartridge and electrophotographic image forming apparatus

Nagaoka, K., Nakamura, M., Miyauchi, Y., & Yamaguchi, S

U.S. Patent Application No. 15/337,629.

A developing member that can prevent bleed under a high temperature and high humidity and prevent charge up of the developing member under a low temperature and low humidity is provided. A developing member including an electro-conductive substrate and an elastic layer disposed on the electro-conductive substrate; the elastic layer including a binder resin, an anion and a particle containing a metal, oxide; the binder resin including a resin having a cationic organic group in the polymer chain; the anion being at least one selected from the group consisting of a fluorinated sulfonate anion, a fluorinated carboxylate anion, a fluorinated sulfonylimide anion, a fluorinated sulfonylmethide anion, a dicyanamide anion, a fluorinated alkylfluoroborate anion, a fluorinated phosphate anion, a fluorinated antimonate anion, a fluorinated arsenate anion and a bis(oxalate)borate anion; the metal oxide including an oxide of a metal having an electronegativity of 11.0 or less as a metal ion.

Developing-member-method-of-producing-the-same-process-cartridge-and-electrophotographic-image-forming-apparatus
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