| 摘要 |
PURPOSE:To obtain a magenta toner for electrophotography controlling a hue and having a fine color and satisfactory weather resistance by adding an anthraquinone dye to a rhodamine dye belonging to C.I. Solvent Red 49. CONSTITUTION:A compd. having a structure represented by the formula as a rhodamine dye belonging to C.I. Solvent Red 49 and an anthraquinone dye are added to a binding resin, preferably styrene-acrylate resin. The pref. amt. of the rhodamine dye added is 3.0-6.0 pts. wt. per 100pts. wt. of the resin. The desirable ratio of the rhodamine dye to the anthraquinone dye is 10/1-6/10 and a lower ratio of the rhodamine dye brings lower saturation. In the case of 10/1-6/10 ratio, the chromaticity of a toner compsn. satisfies 50.0-80.0L*, 61.0-80.0a*, -10.0-40.0b* and 60.0-80.0c*. A magenta toner ensuring high saturation and vivid chromaticity, not coloring a silicone rubber roll and having superior light and heat resistances is obtd. |
