ELECTROPHOTOGRAPHIC PHOTORECEPTOR AND IMAGE FORMING APPARATUS

PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor having an intermediate layer and a photosensitive layer successively disposed on a conductive support, which shows little change in the characteristics even in repeated use and which hardly causes increase in a residual potential...

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Bibliographic Details
Main Authors UCHIDA TADAYOSHI, TORIO NOBORU, NAKAMURA HIDEKI
Format Patent
LanguageEnglish
Published 22.09.2014
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor having an intermediate layer and a photosensitive layer successively disposed on a conductive support, which shows little change in the characteristics even in repeated use and which hardly causes increase in a residual potential in a low temperature and low humidity environment and generation of black spot images at high temperature and high humidity.SOLUTION: The electrophotographic photoreceptor includes an intermediate layer and a photosensitive layer on a conductive support. The intermediate layer comprises a binder resin and titanium oxide treated with aluminum hydroxide. The volume content percentage of the titanium oxide treated with aluminum hydroxide is 30 vol.% or more and 50 vol.% or less in the intermediate layer; a titanium oxide content percentage in the titanium oxide treated with aluminum hydroxide is 70 wt.% or more and 95 wt.% or less; and the titanium oxide treated with aluminum hydroxide shows a water absorption rate of 0.01 or less. The intermediate layer has a volume resistivity of 1.0×10 cm or more and 1.0×10 cm or less at an electric field intensity of 2.5×10V/cm.
Bibliography:Application Number: JP20130050218