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:
Feb. 12, 2013
Filed:
May. 28, 2009
Yoichi Nakamura, Nagano, JP;
Seizo Kitagawa, Nagano, JP;
Hiroshi Emori, Nagano, JP;
Yasushi Tanaka, Nagano, JP;
Hiroyuki Ichiyanagi, Nagano, JP;
Yoichi Nakamura, Nagano, JP;
Seizo Kitagawa, Nagano, JP;
Hiroshi Emori, Nagano, JP;
Yasushi Tanaka, Nagano, JP;
Hiroyuki Ichiyanagi, Nagano, JP;
Fuji Electric Co., Ltd., Kawasaki-shi, JP;
Abstract
In an electrophotographic photoreceptor having a photosensitive layer on an electroconductive substrate, the photosensitive layer is a positive-charging laminate comprising at least a charge transport layer and a charge generating layer laminated in that order, with the charge generating layer containing at least a resin binder, a charge generating agent, a space filler and an electron transport agent, while the charge transport layer contains at least, as a resin binder, polystyrene and a hole transport agent, and mineral oil of the charge transport layer is in an amount of 1% by mass or less of an amount of polystyrene. Thus, a highly durable and economic positive-charging multilayer electrophotographic photoreceptor and a manufacturing method therefor may be achieved.