| 摘要 |
PURPOSE:To provide a transparent thermal layer having high sensitivity by using a specific compound as a part of a coupler. CONSTITUTION:A compound represented by general formula (I) is used as a coupler. In the formula (I), R1 and R2 are a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group, an alkoxy group or an aryl group and pref. ones among the substituents represented by R1 and R2 are a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group or an aryl group and, as a lower alkyl group, a methyl group and an ethyl group are especially pref. and, as a lower alkoxy group, a methoxy group and an ethoxy group are especially pref and, as a halogen atom, a fluorine atom and a chlorine atom are especially pref. and, as an aryl group, a phenyl group, a chlorophenyl group and a tolyl group are especially pref. |
