The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2017
Filed:
Sep. 29, 2016
Fuji Electric Co., Ltd., Kawasaki-shi, Kanagawa, JP;
Masaru Takeuchi, Matsumoto, JP;
Hirotaka Kobayashi, Matsumoto, JP;
Toshiki Obinata, Azumino, JP;
Toshiki Takeuchi, Matsumoto, JP;
FUJI ELECTRIC CO., LTD., Kawasaki-Shi, Kanagawa, JP;
Abstract
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 (R) [% 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):=(/())×100  (1)1≦≦40  (2); andwhen 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 2×10Ω/cm, the surface potential difference (ΔVo) and half-tone potential difference (ΔVh) between before and after the voltage application are both 15 V or less.