Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1990-09-18
1992-04-07
Welsh, David
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430 83, 430 49, G03G 504
Patent
active
051027607
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.
REFERENCES:
patent: 4500622 (1985-02-01), Horie et al.
Horie Seiji
Kondo Syun-ichi
Tachikawa Hiromichi
Watarai Syu
Yokoya Hiroaki
Fuji Photo Film Co. , Ltd.
Welsh David
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