Electrophotographic photoreceptor, process cartridge, and image forming apparatus
AssigneeFUJIFILM Business Innovation Corp.
InventorsYuto Okazaki, Wataru Yamada, Masahiro Iwasaki, Keisuke Kusano, Taisuke Fukui
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Abstract
An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer on the conductive substrate. The electrophotographic photoreceptor has an outermost surface layer that contains fluorine-containing resin particles and a fluorine-containing graft polymer. The fluorine-containing resin particles contain 0 or more and 30 or less carboxy groups per 106 carbon atoms. The outermost surface layer has a dielectric constant of 3.75 or more and 3.90 or less. The contact angle of pure water on the outermost surface layer is 90° or more.
Claims18
An electrophotographic photoreceptor comprising:
- a conductive substrate;
- and
- a photosensitive layer on the conductive substrate, wherein:
- the electrophotographic photoreceptor has an outermost surface layer that contains fluorine-containing resin particles and a fluorine-containing graft polymer,
- fluorine-containing resin particles contain 0 or more and 30 or less carboxy groups per 106 carbon atoms,
- outermost surface layer has a dielectric constant of 3.75 or more and 3.90 or less, and
- a contact angle of pure water on the outermost surface layer is 90° or more.
An electrophotographic photoreceptor comprising:
- a conductive substrate;
- and
- a photosensitive layer on the conductive substrate,
- wherein:
- the electrophotographic photoreceptor has an outermost surface layer that contains fluorine-containing resin particles, a fluorine-containing graft polymer, and a defoaming agent,
- the fluorine-containing resin particles contain 0 or more and 30 or less carboxy groups per 106 carbon atoms,
- an amount of the fluorine-containing graft polymer relative to an amount of the fluorine-containing resin particles is 4.5 mass % or more and 9.0 mass % or less,
- an amount of the defoaming agent relative to the outermost surface layer is 10 ppm or more and 10000 ppm or less,
- the outermost surface layer has a dielectric constant of 3.75 or more and 3.90 or less, and
- a contact angle of pure water on the outermost surface layer is 90° or more.
Dependencies are inferred from the claim text.