申请人:EASTMAN KODAK COMPANY
公开号:EP0486995A1
公开(公告)日:1992-05-27
A magenta dye-donor element for thermal dye transfer comprises a support having thereon a dye layer comprising a mixture of a yellow dye and a magenta dye dispersed in a polymeric binder, the magenta dye having the formula:
wherein:
R¹ is hydrogen or a substituted or unsubstituted alkyl or allyl group of from 1 to 6 carbon atoms, with the proviso that R¹ is hydrogen when X is alkoxy;
X is R¹, an alkoxy group of from 1 to 4 carbon atoms or taken together with R² represents the atoms which form a 5- or 6-membered heterocyclic ring;
R² is a substituted or unsubstituted alkyl or allyl group of from 1 to 6 carbon atoms or can be combined with X as described above;
R³ is a substituted or unsubstituted alkyl group of from 1 to 6 carbon atoms or a substituted or unsubstituted aryl group of from 6 to 10 carbon atoms;
J is CO, CO₂, -SO₂- or CONR⁵-;
R⁴ is a substituted or unsubstituted alkyl or allyl group of from 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group of from 6 to 10 carbon atoms; and
R⁵ is hydrogen or R³.
一种用于热染料转移的洋红色染料捐赠元件包括一个支撑体,支撑体上有一个染料层,染料层由分散在聚合物粘合剂中的黄色染料和洋红色染料的混合物组成,洋红色染料的化学式为
其中
R¹为氢或1至6个碳原子的取代或未取代的烷基或烯丙基,但当X为烷氧基时,R¹为氢;
X 是 R¹、1 至 4 个碳原子的烷氧基或与 R² 一起代表构成 5 或 6 元杂环的原子;
R² 是 1 至 6 个碳原子的取代或未取代的烷基或烯丙基,或如上所述与 X 结合;
R³ 是 1-6 个碳原子的取代或未取代的烷基或 6-10 个碳原子的取代或未取代的芳基;
J 是 CO、CO₂、-SO₂- 或 CONR⁵-;
R⁴ 是 1 至 6 个碳原子的取代或未取代的烷基或烯丙基,或 6 至 10 个碳原子的取代或未取代的芳基;以及
R⁵ 是氢或 R³。