| 摘要 |
PROBLEM TO BE SOLVED: To provide a positive photosensitive composition exellent in printing resistance as well as stability at the time of preservation by providing a recording layer with a polymer soluble in an alkaline developping solution, a specified compound, and a specified near infrared ray absorbing dye. SOLUTION: A recording layer is provided that contains on its support at least a polymer soluble in an alkaline developping solution, a dihydropyridine compound represented by a formula I, and a near infrared ray absorbing dye represented by a formula II. In the formula I, R1 , R5 is alkyl group, R2 , R4 is -COOR' group, R3 is alkyl group. In the formula II, R6 is hydrogen atom, R7 , R8 is alkyl group, R9 , R10 is halogen atom, Z1 is divalent hydrocarbon residue, X1 , X2 is sulfur atom, Y<-> is pair anion of dye. |
