Spectrally sensitized photosensitive silver halide material

Abstract

Abstract PURPOSE:To obtain a photosensitive material with high spectral sensitivity to laser light by spectrally sensitizing a silver halide emulsion contg. silver iodide with a specified sensitizing dye. CONSTITUTION:A spectrally sensitized photosensitive silver halide material is obtd. by adding a sensitizing dye represented by general formulaIor II to a silver iodobromide emulsion contg. 0.1-4.0mol% silver iodide by 20mg per 1mol silver halide. Since the dye has high spectral sensitivity to gaseous He-Ne laser light, etc., the absorption wavelength range of the silver halide emulsion layer becomes 400-600nm. This sensitive material is suitable for laser facsimile, etc., has high sensitivity, leaves no dye stain on a film, and can be handled under bright safelight.

Inventors

• 👤 Atsuo Ezaki
• 👤 江崎　敦雄
• 👤 Kenji Egami
• 👤 江上　謙二

Bibliographic Details