Electrophotographic photoreceptor, electrophotographic apparatus comprising the same, and package of electrophotographic photoreceptor

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United States of America Patent

PATENT NO 9804511
SERIAL NO

15279874

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Abstract

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In a negatively-chargeable laminate-type electrophotographic photoreceptor, a charge generation layer and another charge transport layer are arranged on a conductive substrate directly or via an intermediate layer. The charge transport layer contains at least a hole-transporting substance, an electron-transporting substance and a binder resin; the mass ratio (RPN) [% by mass] between mass (P) of the hole-transporting substance and mass (N) of the electron-transporting substance is represented by the following equation (1), and satisfies the following equation (2):

description='In-line Formulae' end='lead'RPN=(N/(P+N))×100  (1)description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'1≦RPN≦40  (2); anddescription='In-line Formulae' end='tail'

when a voltage of +6 kV is applied to the photoreceptor for 5 seconds via a resin sheet having a thickness of 50 μm and a surface resistivity of 2×107 Ω/cm2, the surface potential difference (ΔVo) and half-tone potential difference (ΔVh) between before and after the voltage application are both 15 V or less.

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Patent Owner(s)

Patent OwnerAddress
FUJI ELECTRIC CO LTD1-1 TANABESHIDEN KAWASAKI-KU KAWASAKI-SHI

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kobayashi, Hirotaka Matsumoto, JP 65 324
Obinata, Toshiki Azumino, JP 3 4
Takeuchi, Masaru Matsumoto, JP 110 879
Takeuchi, Toshiki Matsumoto, JP 82 255

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