| 摘要 |
PURPOSE:To make heat stability and light fastness excellent and to reduce reproductive deterioration by containing a specific compound in a recording layer. CONSTITUTION:A compound represented by formula (I) is contained in a recording layer. In the formula, M is nickel, palladium, platinum or copper, X1, X2, Y1 and Y2 are hydrogen, halogen, an alkyl group, a dialkylamino group, an alkoxy group, an aryl group or an acyl group, X1 and X2 may be fused to other aromatic ring, A is a cation and n is an integer of 10000 or less. |
