Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1976-06-24
1981-11-17
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430108, 430112, 430114, 430117, G03G 912, G03G 910
Patent
active
043012272
ABSTRACT:
An electrophotographic developer containing a carrier, a resinous, waxy or varnish compound and as a color component, a phosphotungstomolybdic acid lake of a mixture of an indolenine dye of the formula (I): ##STR1## wherein A is a benzene or naphthalene nucleus, R.sub.1 is a C.sub.1 -C.sub.4 alkyl group R.sub.2 and R.sub.3 are respectively a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, R.sub.4 and R.sub.5 are respectively a hydrogen atom, a C.sub.1 -C.sub.4 alkyl, .beta.-hydroxyethyl, .beta.-chloroethyl, .beta.-cyanoethyl, aralkyl, cycloalkyl, phenyl, or substituted phenyl. Y is a hydrogen or halogen atom, or a nitro, alkyl, alkoxy, carbalkoxy or acetamido group, and X.sup.- is a colorless anion, with a xanthene dye of the formula (II): ##STR2## wherein R.sub.6, R.sub.7, R.sub.10, R.sub.11 and R.sub.12 are respectively a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, R.sub.8 and R.sub.9 are respectively a C.sub.1 -C.sub.4 alkyl group, and Y.sup.- is a colorless anion.
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Color Index, 3rd. Ed., vol. 3, 1971, pp. 4382, 4390, 4394, 4417-4423 and 4437-4440.
Research Disclosures, Product Licensing Index, 8/72, pp. 54-56.
Hatori Minoru
Hotta Seiji
Kawahara Hitoshi
Koseki Fumio
Bowers Jr. Charles L.
Sumitomo Chemical Company Limited
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