Electrophotographic liquid developer
Abstract
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): <IMAGE> (I) wherein A is a benzene or naphthalene nucleus, R1 is a C1-C4 alkyl group R2 and R3 are respectively a hydrogen atom or a C1-C4 alkyl group, R4 and R5 are respectively a hydrogen atom, a C1-C4 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- is a colorless anion, with a xanthene dye of the formula (II): <IMAGE> (II) wherein R6, R7, R10, R11 and R12 are respectively a hydrogen atom or a C1-C4 alkyl group, R8 and R9 are respectively a C1-C4 alkyl group, and Y- is a colorless anion.
Inventors
- 👤 Seiji Hotta
- 👤 Hitoshi Kawahara
- 👤 Minoru Hatori
- 👤 Fumio Koseki
Bibliographic Details
Claims Analysis
Total Claims: 7References Cited (Backward Citations)
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