摘要:
Photographic elements containing polymethine dyes which contain a tellurazolium nucleus which is substituted at its 2-position with a methine chain which is in turn substituted at its β position with a dye property modifier.
摘要:
Radiation sensitive silver halide photographic elements are disclosed which are protected from fog by hydrolyzed quaternized chalcogenazolium salts of middle chalcogens, wherein the quaternizing substituent contains a group in which T and T' are carbonyl or sulfonyl and m is from 1 to 3.
摘要:
Polymethine dyes are disclosed containing a tellurazolium nucleus which is substituted at its 2-position with methine chain which is in tum substituted at its position with a dye property modifier. These dyes can be used in photographic elements to facilitate image formation.
摘要:
Radiation sensitive silver halide photographic elements are disclosed which are protected from fog by hydrolyzed quaternized chalcogenazolium salts of middle chalcogens, wherein the quaternizing substituent contains a group in which T and T' are carbonyl or sulfonyl and m is from 1 to 3.
摘要:
Photographic elements containing polymethine dyes which contain a tellurazolium nucleus which is substituted at its 2-position with a methine chain which is in turn substituted at its β position with a dye property modifier.
摘要:
Polymethine dyes are disclosed containing a tellurazolium nucleus which is substituted at its 2-position with methine chain which is in tum substituted at its position with a dye property modifier. These dyes can be used in photographic elements to facilitate image formation.