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:
Jun. 20, 1995
Filed:
Jan. 18, 1990
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
An electrophotographic printing plate precursor is disclosed, which comprises an electrically conductive support having thereon a photoconductive layer containing a photoconductive pigment and binder resin which is designated to undergo an electrophotographic process wherein a toner image is formed and the photoconductive layer in the non-image portion other than the toner image portion is then removed to form a printing plate, wherein said photoconductive pigment is a phthalocyanine pigment and said photoconductive layer further comprises at least one compound selected from the compounds represented by the formulae (I), (II) and (III): ##STR1## wherein Z represents a sulfur atom or an oxygen atom, R.sup.1 represents an alkyl group, an alkoxy group, a single ring or double condensed ring aryl group, a single ring or a double condensed ring aryloxy group, or a univalent group derived from a heterocyclic ring, and the two R.sup.1 groups in general formula (III) may be the same or different; R.sup.2 and R.sup.3 each represent a hydrogen atom, an alkyl group, a single ring or double condensed ring aryl group, or a univalent group derived from a heterocyclic ring, and R.sup.2 and R.sup.3 may be the same or different; R.sup.4 represents a methylene group, a polymethylene group, a branched alkanediyl group or an arylene group, and R.sup.1 and R.sup.2, or R.sup.2 and R.sup.3 may be bonded together.