| 摘要 |
<p>PHOTOGRAPHIC PRODUCTS AND PROCESSES Myron S. Simon and David P. Waller Photographic products and processes for the imagewise generation of a dye from a color shifted dye precursor of a preformed image dye, said precursor having at least one group, wherein R is hydrogen, alkyl, provided that the .alpha. - carbon does not have a hydrogen atom attached thereto, aryl such as phenyl or substituted phenyl, e.g. p-nitrophenyl, or heterocyclic such as pyridine; R1-R6 are hydrogen, alkyl, preferably having from 1 to 6 carbon atoms, or aryl; n is 0 or 1; and T is a moiety containing a thiazolidin-2-yl group which upon silver-assisted</p> |
