申请人:DAI NIPPON PRINTING CO., LTD.
公开号:EP0512548A1
公开(公告)日:1992-11-11
The present invention provides a pyridine derivative represented by the following formula A or B, a dye produced by coupling the pyridine derivative A or B with an arbitray coupler and a thermal transfer sheet wherein use is made of the dye. In a thermal transfer process wherein use is made of a sublimable dye, the dye and the thermal transfer sheet according to the present invention can form a clear image having a sufficient density and an excellent light fastness.
本发明提供了一种由下式 A 或 B 表示的吡啶衍生物、一种通过将吡啶衍生物 A 或 B 与一种 arbitray 偶联剂偶联而制得的染料以及一种使用该染料的热转印片材。 在使用升华染料的热转印工艺中,根据本发明的染料和热转印片材可以形成具有足够密度和优异耐光性的清晰图像。