| 摘要 |
PURPOSE:To improve image density and contrast by adding a dye which is decolored by ammonia to the coloring layer of a photosensitive heat-sensitive type recording member obtd. by combining a fixing layer (visible light sensitive layer) and the coloring layer (ultraviolet sensitive layer). CONSTITUTION:On a support the 1st layer (fixing layer) consisting of a cobalt (III) ammine complex such as hexamminecobalt (III) perchlorate, a photoreducing agent such as p-benzoquinone and a hydrogen donor such as polyethylene glycol and the 2nd layer (coloring layer) consisting of a photo-oxidizing agent such as hexarylbiimidazole, a coupler (a dye leuco-compound which colors by reaction with an oxidizing substance formed from the photo-oxidizing agent) such as aminotriarylmethane, an acid such as p-toluenesulfonic acid and a dye such as pyrylium dye which is decolored by reaction with NH3 are laminated in this order. |
