Chemical sensitization of photographic silver halide emulsion useful in color photography with sulfur, selenium or tellurium compound uses 5-mercapto-1,3,4-dithiazole 3,3-dioxide as sensitizer

摘要

Chemical sensitization of photographic silver halide emulsions with compound(s) releasing sulfur (S), selenium (Se) or tellurium (Te) is carried out in the presence of 5-mercapto-1,3,4-dithiazole 3,3-dioxide (IA) or 2-alkyl derivative. Chemical sensitization of photographic silver halide emulsions with compound(s) releasing sulfur (S), selenium (Se) or tellurium (Te) is carried out in the presence of 5-mercapto-1,3,4-dithiazole-3,3-dioxide (IA) or 2-alkyl derivative of formula (I). R1 = hydrogen or alkyl An Independent claim is also included for photographic material with a base and emulsion layer(s) sensitized with (I).