申请人:MINNESOTA MINING AND MANUFACTURING COMPANY
公开号:EP0671393A1
公开(公告)日:1995-09-13
Photothermographic elements incorporating leuco forms of phenazinium dyes to provide a developed colour image. The dye has a nucleaus of the general formula:
in which;
X represents
Y is H or any substituent other than amino or amido,
R¹, R², R⁴ and R¹⁰ are independently selected from H, alkyl, aryl, alkylsulfonyl, arysulfonyl, alkylcarbonyl, arylcarbonyl, or
R¹ and R² together represent the necessary atoms to complete a cyclic structure or one or more of R¹, R² and R⁴ represent the necessary atoms to complete a cyclic structure fused to the nucleus having skeletal atoms selected from C, N, 0 and S, and
R¹¹ represents any group which will not prevent oxidative cleavage of the X-N bond,
with the proviso that when R¹ is C₂H₅
R² is not C₂H₄NHSO₂CH₃.
光热成像元件采用苯并二氮杂染料的白态形式,以提供发展后的彩色图像。该染料具有一般式的核:其中; X代表; Y为H或任何不是氨基或酰胺基的取代基,R¹,R²,R⁴和R¹⁰独立地选自H,烷基,芳基,烷基磺酰基,芳基磺酰基,烷基羰基,芳基羰基,或R¹和R²一起代表必要的原子以完成环状结构,或者R¹,R²和R⁴中的一个或多个代表必要的原子以完成与骨架原子(选自C,N,0和S)融合的环状结构,R¹¹代表任何不会防止X-N键的氧化裂解的基团,但当R¹为C₂H₅时,R²不为C₂H₄NHSO₂CH₃。