| 摘要 |
<p>PURPOSE:To provide a color toner having excellent melt miscibility with which picture images of continuous copies obtd. by repeated development have stable density, bright red color, and good light resistance, by using a specified dye for a red color toner. CONSTITUTION:A negative charge color toner is obtd. by incorporating a dye for a red color toner expressed by formula preferably by 0.1-10 pts.wt. to the binder resin. The compd. of formula shows a bright red color and is singly used as a coloring dye for a red toner, or two or more kinds of compds. of formula are compounded to give a red color. As for a charge controlling agent to be added to improve the electrification property of this color toner is preferably a coloress compd. so as not to change the color tone of the toner, and for example, bis(4-t-butylsalicylic acid) chromium (2) complex, N- octadecylpyridinium chloride, tetraoctyl ammonium chloride, etc., are used. In formula, X is a halogen atom or OR.</p> |
