| 摘要 |
PROBLEM TO BE SOLVED: To form a thermal coloring image with ultraviolet spectrum part minimum density and residual color reduced by forming a thermal coloring image forming layer containing a non-photosensitive organic silver salt, a silver ion reducing agent, a binder, a color tone regulating agent, and a specified radiation absorbing agent on a support and incorporating a heat-curing agent. SOLUTION: A thermal coloring image forming layer containing a non- photosensitive organic silver salt, a silver ion reducing agent, a binder, a color tone regulating agent, and a radiation absorbing agent having a wavelength range of 750-1100 ppm is formed on a support. and a curing agent which is cured by heat is incorporated. Or, an absorbent absorbing a radiation having a wavelength range of 750-1100 ppm is incorporated in a layer adjoining the image forming layer, and the thickness of a dry film is set up at 0.1-2 μm. At least one layer of adjacent layers is made adjacent lower and upper layers. A thermal coloring image forming material is exposed to a radiation of 0.1-2.0 joule/cm2 for 0.01-0.2 μsec peer one picture element and heated to set up the density of an image at 2.5-6. |
