Coloring matter for thermal transfer

Abstract

Abstract PURPOSE:To contrive enhancement of color reproduction property, heat resistance, molar absorptivity, preservation stability and ink-preparing property, by using a specified styryl-based coloring matter as a coloring matter for sublimation-type thermal transfer recording. CONSTITUTION:An aldehyde of formula III, wherein X is hydrogen, methyl or chlorine, R is 3-8C alkoxyalkyl or the like, and R' is subst. or unsubst. 1-8C alkyl, obtained by formylation of an aniline of formula II is condensed with malononitrile to obtain a yellow coloring matter of formula I. The coloring matter is dissolved or dispersed in a medium such as water and an alcohol together with a binder such as a water-soluble resin and an acrylic resin to prepare an ink, which is applied to a base such as a tissue paper and a heat-resistant film to produce a thermal transer sheet. The coloring matter can be used in combination with an appropriate magenta color and an appropriate cyan color to obtain full color.

Inventors

• 👤 Toshio Niwa
• 👤 俊夫 丹羽
• 👤 Yukichi Murata
• 👤 勇吉 村田
• 👤 Shuichi Maeda
• 👤 修一 前田

Bibliographic Details