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:
Apr. 07, 1992
Filed:
Sep. 18, 1990
Hiroaki Yokoya, Kanagawa, JP;
Hiromichi Tachikawa, Kanagawa, JP;
Syu Watarai, Kanagawa, JP;
Syunichi Kondo, Kanagawa, JP;
Seiji Horie, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A novel electrophotographic photoreceptor for copiers or photoprinters is provided comprising a photoconducting layer provided on an electrically conductive support, wherein said photoconducting layer comprises a phthalocyanine pigment and at least one compound represented by the general formula (I) or (II): ##STR1## wherein Z represents a sulfur atom or oxygen atom; R.sup.1 and R.sup.2 may be the same or different and each represents a hydrogen atom, alkyl group, aryl group or aralkyl group; A represents an alkyl group, aryl group, aralkyl group or monovalent heterocyclic group; and B represents an alkylene group, arylene group, polymethylene group or aralkylene group. A novel electrophotographic printing plate precursor is also provided which comprises a photoconducting layer containing at least a photoconducting pigment and a binder resin on an electrically conductive support and is adapted to form a printing plate in an electrophotographic process comprising forming a toner image, and then removing said photoconducting layer from the non-image portions except said toner image portions, characterized in that said photoconducting pigment is a phthalocyanine pigment and said photoconducting layer further comprises a compound represented by the general formula [I] or [II]: ##STR2## wherein Z represents a sulfur atom or oxygen atom; R.sup.1 and R.sup.2 may be the same or different and each represents a hydrogen atom, alkyl group, aryl group or aralkyl group; A represents an alkyl group, aryl group, aralkyl group or monovalent heterocyclic group; and B represents an alkylene group, arylene group, polymethylene group or aralkylene group.