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. 13, 1992
Filed:
Dec. 29, 1989
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
An electrophotographic photoreceptor comprising an electro-conductive support having thereon at least one charge-generating layer and at least one charge-transporting layer, wherein said charge-generating layer contains, as a resin binder, a copolymer derived from at least one monomer represented by formula (I) and at least one monomer represented by formula (II) and a charge-generating substance, and wherein said charge-transporting layer is formed on said charge-generating layer by a coating solution containing a charge-transporting substance and a solvent not dissolving said resin binder: ##STR1## wherein R.sup.1 and R.sup.3, which may be the same or different, each represents a hydrogen atom or a methyl group; and R.sup.2 represents an unsubtituted or substituted alkyl group or an unsubstituted or substituted aralkyl group. Because of incorporation of the particular copolymer, the photoreceptor has high sensitivity, little fluctuation of electrophotographic characteristic in repeated use, excellent capacity of forming uniform images, excellent charging property and small residual potential. Specifically, the charge-generating layer is not dissolved out in formation of the charge-transporting layer over the charge-generating layer.