| 摘要 |
PURPOSE:To easily form an image in light room conditions and unnecessitate a silver salt or an organic photosensitive agent, by using a recording layer film consisting mainly of a particulate resin of which the surface is hydrophilic and the inside part is hydrophobic. CONSTITUTION:A coating liquid consisting of an aqueous dispersion of a coloring agent (a) and the particulate resin (b) of which the surface is hydrophilic and the inside part is hydrophobic is applied to a base, followed by drying to provide the recording layer film. A predetermined part of the recording layer film is heated in accordance with a pattern A by YAG laser or the like, whereby the particulate form is eliminated and the part is fixed, followed by development by treating with an aqueous alkaline solution such as an aqueous 5% solution of sodium carbonate (A denotes a fixed light-shielding image pattern, and B denotes a part where the surface of the base is exposed as a result of the removal of the recording layer film). |
