Photographic products and processes

Details Photographic products and processes Photographic products and processes

C - Chemistry, Metallurgy

07

D

96/36, 260/310.1

C07D 277/04 (2006.01) G03C 1/40 (2006.01) G03C 8/04 (2006.01) G03C 8/10 (2006.01)

Patent

CA 1223261

ABSTRACT OF THE DISCLOSURE This invention relates to photographic processes and products for forming an image in dye from a colorless precursor of a preformed image dye which is substituted with a moiety containing a thiazolidinyl group, said thiazolidinyl group (a) being capable of undergoing cleavage imagewise in the presence of an imagewise distribution of silver ion and/or soluble silver complex and (b) possessing a substituent on the carbon atom in the 2-position that undergoes a .beta.-elimination reaction upon said imagewise cleavage, which moiety maintains the precursor in its colorless form at least until said thiazolidinyl group undergoes said cleavage. In a further embodiment, an imagewise distribution of a photographically useful reagent, which reagent may be, for example, a photographically active reagent, is released as a carbamic acid by a .beta.-elimination reaction following the cleavage of a thiazolidinyl group whereby said reagent is provided with a solubilizing group at least during the initial stages of processing. A typical thiazolidinyl compound useful in this invention is: Image

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