Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1981-09-09
1984-09-11
Martin, Jr., Roland E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430 58, 430 76, 430 77, 430 78, 260157, 260158, G03G 506, G03G 514
Patent
active
044710402
ABSTRACT:
An electrophotographic photosensitive member have a photosensitive layer, said photosensitive layer comprising at least one dis-azo pigment of Formula (I) or Formula (II) shown below: ##STR1## wherein Z represents an oxygen atom, a sulfur atom or >N--A.sub.2, wherein A.sub.2 is a hydrogen atom or a lower alkyl, A.sub.1 a hydrogen atom, a lower alkyl or a halogen atom; Ph.sub.1 an unsubstituted or substituted phenylene group, n an integer of 0 or 1, and B.sub.1 a coupler residue; with proviso that when n is 0, Z is an oxygen atom and A.sub.1 is a hydrogen atom, the case where Ph.sub.1 represents substituted phenyl radicals except for unsubstituted or mono-substituted phenyl radicals with a halogen atom, a lower alkyl or an alkoxy group;
and ##STR2## wherein Ph.sub.2 represents an unsubstituted or substituted phenylene group and B.sub.2 a coupler residue.
REFERENCES:
patent: 3884691 (1975-05-01), Rochlitz
patent: 4260672 (1981-04-01), Sasaki et al.
patent: 4349616 (1982-09-01), Sasaki
patent: 4356243 (1982-10-01), Ishikawa et al.
Ishikawa Shozo
Katagiri Kazuharu
Kitahara Makoto
Watanabe Katsunori
Canon Kabushiki Kaisha
Copyer Kabushiki Kaisha
Martin Jr. Roland E.
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