Patent ID: 6759187
Filing Date: 2004-07-06
Classification: G03C,Y10S

Abstract:
A photographic or photothermographic imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein:PUG is a photographically useful group; LINK 1 and LINK 2 are linking groups; TIME is a timing group; l is 0 or 1; m is 0, 1, or 2; n is 0 or 1; Y is C, N, O or S; X is an electron-withdrawing group; W is hydrogen, halogen, or a substituted or unsubsidized alkyl, cycloalkyl, aryl or heterocyclic group, or W can combine with T or R12 to form a ring, w is 0 to 3 when Y is C, w is 0-2 when Y is N, and w is 0-1 when Y is O or S, when w is 2, the two W groups can combine to form a ring, and when w is 3, two W groups can combine to form a ring or three W groups can combine to form a ring that is a bicyclic substituent; R12 is hydrogen, or a substituted or unsubsidized alkyl, cycloalkyl, aryl or heterocyclic group or R12 can combine with T to form a ring; T is a substituted or unsubsidized alkyl cycloalkyl, aryl or six-membered heterocyclic group, t is 0, 1, or 2, with the proviso that if X is a sulfonyl group and a and l are each 1 and m and n are each 0, then t is 1 or 2; and if t is 2 the two T groups can combine to form a ring; X is divalent, a is 1 or 2; and b is 1; and where LINK 1 and LINK 2 is independently represented by the following structure: â€ƒwherein Xâ€² is carbon or sulfur; Yâ€² is oxygen, sulfur or Nâ€”R1, where R1 is substituted or unsubsidized alkyl or substituted or unsubsidized aryl; p is 1 or 2; Z is carbon, oxygen or sulfur; r is 0 or 1; with the proviso that when Xâ€² is carbon, both p and r are 1, when Xâ€² is sulfur, Yâ€² is oxygen, p is 2 and r is 0; # denotes the bond to PUG for LINK 1 or TIME for LINK 2; and $ denotes the bond to TIME for LINK 1 or T(t) substituted carbon for LINK 2; and wherein PUG is a development inhibitor, bleach accelerator, bleach inhibitor, inhibitor releasing developer, dye precursor, developing agent, silver ion fixing agent, electron transfer agent, silver halide solvent, silver halide complexing agent, reductone, image toner, pre-processing or post-processing image stabilizer, nucleator, or precursor thereof.