| 摘要 |
PURPOSE:To obtain a fog-free sharp image and superior light resistance by incorporating in a binder resin a dye obtained by diazotizing a substituted aniline compound and coupling it with an N-subsituted pyridone compound. CONSTITUTION:The color toner is prepared by diazotizing the dye represented by formula I obtained by diazotizing the substituted aniline compound and coupling it with an N-substituted pyridone compound and dispersing the obtained dye into a binder resin, and in formula I, R1 is H, halogen, alkyl, alkoxy; R2 is alkyl, alkoxyalkyl, aralkyl, or alkoxycarbonylalkyl; R3 is alkyl, alkoxyalkyl, or aralkyl. This yellow type color toner composition has superior melt miscibility, and the densities of images obtained by successive copying through repeating developments are stabilized, and the yellow color of the dye has good lightfastness. |
