SILVER HALIDE PHOTOGRAPHIC MATERIAL

摘要

The present invention provides a photographic material comprising on a support a silver halide emulsion sensitized to light of wavelengths between 600 nm and 850 nm characterized in that said silver halide emulsion comprises a red sensitizing dye having a maximum absorption between 620 nm and 680 nm, an infrared sensitizing dye having a maximum absorption between 700 nm and 850 nm and a supersensitizing compound showing no substantial absorption in said wavelength range from 600 nm to 850 nm. The photographic material is suitable for use in the silver salt diffusion transfer process and can be used for making lithographic printing plates.