| 摘要 |
PURPOSE:To permit a long-time preservation stability by providing a thermal recording layer containing a diazonium compound and a kind of a specified hot melting basic compound as coupler on a support. CONSTITUTION:A thermal recording layer containing a diazonium compound and a hot melting basic compound as given by the formula as coupler is provided on a support, wherein R1, R2, R3 and R4 each represent alyl group, aralkyl group, alkyl group, cyclic alkyl group or hydrogen atom, so provided that they can be substituted by alkyl group, alkoxyl group, nitro group or halogen atom respectivly. Any thermal recording body thus obtained is excellent in the preservation stability while offering a better color formation density. |
