Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1990-01-18
1995-06-20
Rosasco, S.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430 56, 430 59, G03G 1509
Patent
active
054260124
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.
REFERENCES:
patent: 4882248 (1989-11-01), Yamada et al.
patent: 5035969 (1991-07-01), Kondo et al.
patent: 5063129 (1991-11-01), Yokoya et al.
Tachikawa Hiromichi
Watarai Syu
Yokoya Hiroaki
Fuji Photo Film Co. , Ltd.
Rosasco S.
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