Electrophotographic colour toner with high brilliance and colour strength - contains binder and dyestuff of specified classes e.g. di:amino:anthraquinone, azo, pyridone, triazolo:pyridine, methine, indophenol, etc.

摘要

Electrophotographic colour toner contains a binder and a dyestuff of the classes of (a) 1,4-diaminoanthraquinones substd. in the 2- and opt. 3-position; (b) thienyl-, (iso)thiazolyl- or thiadiazolyl-azo-benzenes; (c) phenyl-, oxadiazolyl- or thiadiazolyl-azo-thiazoles; (d) isothiazolyl-azo-pyrazoles, -diaminopyridines or -hydroxypyridines; (e) phenyl-, thienyl-, (iso)thiazolyl- or thiadiazolyl-azo-diaminopyridines; (f) oxadiazolylphenyl-, alkanoylphenyl- or benzoylphenyl-azo-hydroxypyridones; (g) phenyl-azo-(N-phenoxy-, N-tolyloxy-, N-benzyloxy- or N-cyclohexyloxyalkyl-hydroxy)-pyridones; (h) di- or tricyanovinyl-benzenes or -thiazoles; (i) benzoxasines or -thiazines; (j) triazolopyridines; (k) methin dyestuffs with 2 chromophores; (l) indophenols or naphthols or (m) pyridone or quinolone dyestuffs. Dyestuffs of classes (e), (f), (g), (h), (j), (k), (l) and esp. pyridone dyestuffs are pref. used. ADVANTAGE - These toners have an advantageous property profile, including high brilliance and colour strength.