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US 7,351,507 B2Granted
Electrophotographic photoreceptor, image forming apparatus and method, and image process cartridge
AssigneeRicoh Company, Ltd.
InventorsSuzuka Nozoe, Takehiko Kinoshita
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Abstract
An electrophotographic photoreceptor and image processing method, the photoreceptor including an electroconductive substrate; an undercoat layer overlying the electroconductive substrate; and a photosensitive layer overlying the undercoat layer, wherein the undercoat layer includes a titanium oxide; an oil-free alkyd resin; a block isocyanate compound; and a metal oxide different from the titanium oxide, having an average particle diameter smaller than an average particle diameter thereof.
Claims10
An electrophotographic photoreceptor, comprising:
- an electroconductive substrate;
- an undercoat layer located overlying the electroconductive substrate;
- and
- a photosensitive layer located overlying the undercoat layer,
- wherein the undercoat layer comprises:
- a titanium oxide;
- an oil-free alkyd resin;
- a block isocyanate compound;
- and
- a metal oxide different from the titanium oxide, said metal oxide having an average particle diameter smaller than an average particle diameter of said titanium oxide.
7 more elements
Dependencies are inferred from the claim text.