ON-PRESS DEVELOPABLE IMAGEABLE ELEMENTS

摘要

On press developable negative-working, imageable elements have improved printout qualities with an infrared radiation absorbing compound that has a cyanine dye chromophore represented by Structure (CHROMOPHORE):] wherein one or both of Q1 and Q2 are independently acyl groups -(C=O)-R3' and -(C=O)-R4' respectively, wherein R3' and R4' are independently alkyl or aryl groups, or they are joined together to form a ring structure, or one of Q1 and Q2 is hydrogen and the other is a substituted or unsubstituted acyl group, A and A' are independently -S-, -O-, -NH-, -CH2-, or -CR'R"- groups wherein R' and R" are independently substituted or unsubstituted alkyl groups, or R' and R" together can form a cyclic group, Z represents the carbon atoms needed to form a 5- to 7-membered carbocyclic ring, Z1 and Z2 are independently benzo or naphtho condensed rings, and R1' and R2' are independently alkyl, cycloalkyl, or aryl groups.