| 摘要 |
PROBLEM TO BE SOLVED: To improve density and degree of resolution and also improve storage properties, tone and sensitivity by containing an organic silver salt and its developer in respectively different layers and also containing substantially non- sensitive halogenated silver fine particles in either one of the layers and using a family of a heat development photosensitive material of dry silver type. SOLUTION: As a substrate, a transparent substrate composed of respective resin films composed of acrylic ester, methacrylic ester or the like and also a resin film formed of two resin layers or more or the like is used. As an image forming layer, the image forming layer is formed on a transparent substrate of at least the wavelength light of an exposed light source, and as a coloring agent, any coloring agent at least generating abrasion can be used without restriction. An organic silver salt used as an image forming material is colorless or white silver salt stabilized to light, and when to be heated together with a developer, silver is generated by the redox regardless of whether photosensed halogenated silver is or not therein. The image of high degree of resolution is formed, and the storage properties, tone and sensitivity thereof are superior. |
