Patent ID: 6749977
Filing Date: 2004-06-15
Classification: G03C,Y10S

Abstract:
An imaging element comprising an imaging layer having associated therewith a compound having the following structure: wherein x, the average degree of polymerization, is at least 10, R is hydrogen or methyl; and HET is a heteroaromatic ring system selected from the group consisting of A, B, C, and D: wherein $ denotes a bond to W (in the direction of the polymeric backbone); # is in the direction of DEV and denotes the bond to C*, which denotes a tetrahedral carbon atom in the above Structure;R1 and R2 each, or each R1 in Structure C and D where n is 0 to 3, independently represents a hydrogen atom or a photographically acceptable substituent group wherein R1 and R2 can be connected to form a fused ring system; wherein X is O, S or NR9 where R9 is substituted or unsubstituted alkyl or substituted or unsubstituted aryl; wherein G is either absent or selected from the following groups: wherein $ denotes the bond to the polymeric backbone and # denotes the bond to W in the above structure; wherein R5 is hydrogen or a substituted or unsubstituted alkyl or aryl group; LINK is a linking group; DEV is a releasable developing agent; t (subscript) is 0, 1, or 2; R4 is hydrogen, or a substituted or unsubstituted alkyl, cycloalkyl, aryl or heterocyclic group or R4 can combine with R3 or HET to form a ring; R3 is independently selected from a substituted or unsubstituted alkyl group, cycloalkyl group, aryl, or heterocyclic group, an inorganic monovalent electron withdrawing group, or an inorganic divalent electron withdrawing group capped with at least one C1 to C10 organic group (either an R13 or an R13 and R14 group), or R3 is joined with HET or R4 to form a ring; or two R4 groups can combine to form a ring; R13 and R14 are independently selected from substituted or unsubstituted alkyl, aryl, or heterocyclic group; and W is absent or a bivalent spacer group.