Use of mixed-crystal pigments of the quinacridone series in electrophotographic toners and developers, powder coatings and inkjet inks

摘要

The use of mixed-crystal pigments of the quinacridone series consisting of;a) from 85 to 99% by weight of unsubstituted &bgr;-phase quinacridone of the formula (I) ;in which R¹ and R² are hydrogen atoms, and;b) from 1 to 15% by weight of one or more substituted quinacridones of the formula (I) in which the substituents R¹ and R² are identical or different and are chlorine, bromine or fluorine atoms or;C₁-C₄-alkyl, C₁-C₄-alkoxy or carboxamido groups, which can be substituted by C₁-C₆-alkyl groups, and R¹ can additionally be hydrogen,;as colorants in electrophotographic toners and developers, powder coating materials, inkjet inks, electret fibers, and color filters.