申请人:Eastman Kodak Company
公开号:US05712223A1
公开(公告)日:1998-01-27
A dye-donor or recording element comprising a support having thereon a dye layer comprising a yellow dye in a polymeric binder, the dye having the formula: ##STR1## wherein: R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each independently represents hydrogen, halogen, hydroxy, nitro, a substituted or unsubstituted alkyl or alkoxy group of from 1 to about 6 carbon atoms, a substituted or unsubstituted phenyl group, an alkylazo group, or an arylazo group; or any two adjacent R.sup.1, R.sup.2, R.sup.3 and R.sup.4 groups may be taken together with the phenyl ring to which they are attached to form a fused ring system; and Z.sup.1 and Z.sup.2 each independently represents hydrogen or a moiety having a Hammet Sigma (meta) Constant greater than 0.3, such as cyano, esterified carboxy, amide, benzoxazole, alkylsulfonyl, arylsulfonyl; or may be taken together to form a group having a Hammer Sigma (meta) Constant greater than 0.3.
一种染料供体或记录元件,包括一个支撑体,其上具有一层染料,该染料层包括一种黄色染料和聚合物粘合剂,该染料的化学式为:##STR1## 其中:R1、R2、R3和R4每个独立地代表氢、卤素、羟基、硝基、1到约6个碳原子的取代或未取代的烷基或烷氧基、取代或未取代的苯基、烷基偶氮基或芳基偶氮基;或者任意两个相邻的R1、R2、R3和R4基团可以与它们所连接的苯环一起取代形成一个融合的环系统;Z1和Z2各自独立地代表氢或具有大于0.3的Hammett Sigma(meta)常数的官能团,例如氰基、酯化的羧基、酰胺、苯并噁唑、烷基磺酰基、芳基磺酰基;或者可以一起形成具有大于0.3的Hammett Sigma(meta)常数的基团。