Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Electrophotographic photosensitive member, preparation method thereof, image forming process, apparatus and process cartridge using the same
An electrophotographic photosensitive member having a photosensitive layer provided on an electro-conductive supporting substrate and a protection layer provided on the photosensitive layer. The protection layer includes a kind of finely divided metal oxide particle, an organic acid, and a binder resin. The binder resin is a thermo-curable resin. The organic acid is contained in an amount of 0.05 wt. % to 5 wt. % for the amount of the thermo-curable resin. The photosensitive member has a high durability capable of stable image productions for a long period of utilizable time, due to the protection layer.
RICOH Company, Ltd.
G G G G G G G G G G G G G G G G
G03G G03G G03G G03G G03G G03G G03G G03G G03G G03G G03G G03G G03G G03G G03G G03G
inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional
Yasuo Akihiro
Suzuki Sugino