Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1979-12-04
1982-09-07
Kittle, John 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 78, 260176, G03G 506, G03G 1322
Patent
active
043484700
ABSTRACT:
The present invention provides an electrophotographic element which comprises a charge generating layer and a charge transport layer formed, in order, on an electroconductive substrate, said charge generating layer comprising a disazo pigment expressed by the general formula: ##STR1## [wherein A represents ##STR2## represents a member selected from the group consisting of benzene ring, naphthalene ring, indole ring, carbazole ring, benzofuran ring and their substitutes; Ar.sub.1 represents a member selected from the group consisting of benzene ring, naphthalene ring, dibenzofuran ring, carbazole ring and their substitutes; each of Ar.sub.2 and Ar.sub.3 represents a member selected from the group consisting of benzene ring, naphthalene ring and their substitutes; each of R.sub.1 and R.sub.3 represents a member selected from the group consisting of hydrogen, lower alkyl radical, phenyl radical and their substitutes; and R.sub.2 represents a member selected from the group consisting of lower alkyl radical, carboxyl radical and alkyl ester thereof)] and a mixture of binder materials comprising polyvinyl butyral and acrylic resin.
REFERENCES:
patent: 3775105 (1973-11-01), Kukla
patent: 3837851 (1974-09-01), Shattuck et al.
patent: 3871882 (1975-03-01), Wiedemann
patent: 3977870 (1976-08-01), Rochlitz
patent: 4018607 (1977-04-01), Contois
patent: 4026704 (1977-05-01), Rochlitz
patent: 4052210 (1977-10-01), Hectors
Akutsu Eiichi
Ichizuka Kiyomi
Kozima Akio
Goodrow John L.
Kittle John E.
Ricoh Co. Ltd.
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