| 摘要 |
PURPOSE:To obtain inexpensively an emulsion mask with high accuracy and superior durability by removing the unnecessary part of the gelation layer of a photosensitive silver halide material contg. a gelatin binder and by carrying out heating. CONSTITUTION:A photosensitive material obtd. by forming a photosensitive layer consisting of silver halide and a gelatin binder on a substrate is exposed and developed. A pattern of blackened silver halide appears by the development. Only the black pattern is stripped to disclose the substrate, and a gelation layer contg. silver halide is left. Calcination is then carried out to convert the gelatin layer contg. silver halide into a dark brown or black film shielding ultraviolet rays having 365nm principal wavelength. When a fixing stage eliminated in this method is carried out after the developing stage, only silver halide is dissolved and removed and a light brown gelatin film is formed. |
