Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1983-09-28
1985-08-27
Welsh, John D.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430 72, 430 73, 430 76, 534759, G03G 506, G03G 514
Patent
active
045378444
ABSTRACT:
A novel disazo compound is provided which is represented by the general formula (I): ##STR1## (wherein, R.sub.1 and R.sub.2 each stands for hydrogen, a lower alkyl group with 1-4 carbon atoms, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aromatic group, or a substituted or unsubstituted hetero ring group. R.sub.1 and R.sub.2 may be the same or different. And, R.sub.1 and R.sub.2 may mutually bond to form a ring).
This disazo compound may be obtained by diazotating 2,6-diaminoanthraquinone and reacting the same with a coupler represented by the general formula (IV): ##STR2## (wherein, R.sub.1 and R.sub.2 are the same as defined above). Further, a multilayer type electrophotographic element is provided which comprises a charge carrier generating layer and a charge transfer layer and uses, as a charge carrier generating substance, a disazo compound represented by the general formula (I).
REFERENCES:
patent: 4440845 (1984-04-01), Hashimoto
Ricoh Co. Ltd.
Welsh John D.
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