| 摘要 |
PROBLEM TO BE SOLVED: To enhance the infrared laser beam absorbing efficiency and reduce the degree of coloring of a texture by providing a thermally sensitive layer containing an interface absorptive coloring matter consisting of organic silver salt, its developing agent and a specific cyanine compound, and a water-soluble binder, on a support. SOLUTION: A thermally sensitive layer containing an infrared absorptive coloring matter consisting of organic silver salt, its developing agent and a specific cyanice compound expressed by formula, and a water-soluble binder is formed on a support. In the formula, Z<1> , Z<2> are a group of atoms required for forming a complex ring containing nitrogen. These Z<1> and Z<2> are mutually the same as or different from each other. Z<3> is a divalent hydrocarbon group required for forming a 5- or 6-membered ring. R<1> and R<2> are hydrogen atom or an alkyl group, and these are mutually the same as or different from each other. A is oxygen atom, sulfur atom, an imino group or a divalent organic residue; l, m and n are an integer of 0 or 1; p and q are an integer of 0, 1 or 2. |
