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96/14
G03G 13/056 (2006.01) G03G 5/06 (2006.01) G03G 9/09 (2006.01) G03G 17/04 (2006.01) G03G 17/08 (2006.01)
Patent
CA 1122840
Abstract of the Disclosure An electrophotographic imaging process, wherein the electrically photosensitive particles for the image reproduction consist of a black pigment selected from the series of the anthraquinoid pigments which contain at least 2 anthraquinone radicals or at least 6 condensed rings, of the perylenetetracarboxylic diimides or of the metal complexes of the formula Image A represents a nitrogen atom or the Image group, X represents a hydrogen or halogen atom or an alkyl group of 1 to 6 carbon atoms, Y represents a hydrogen or halogen atom, an alkyl, alkoxy or alkylsulphonyl group of 1 to 6 carbon atoms, a nitro or carbamoyl group, an alkylcarbamoyl or alkoxycarbonyl group of 2 to 6 carbon atoms or an arylcarbamoyl or aryloxycarbonyl group of 7 to 11 carbon atoms.
296394
Frey Christoph
Jeanneret Remy
Zographos Georgios
Zwahlen Gunther
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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