| 摘要 |
PROBLEM TO BE SOLVED: To enhance image preservation stability as well as light fastness by containing a disphenylsulfon cross-linking type compound or its composition expressed by a specific formula, and a coloring dye expressed by a general formula. SOLUTION: This material is contained with a disphenylsulfon cross-linking type compound expressed by a general formula I [in the formula, X and Y are a 1-12C saturated or unsaturated hydrocarbon group, or formulas II, III (R is methylene group or ethylene group, T is hydrogen atom or a 1-4C alkyl group), R1-R6 are a halogen atom, a 1-6C alkyl group, or the same alkenyl group respectively independently, (m), (n), (p), (q), (r), (t) are integers of 0-4, and (a) is an integer of 0-10], or a composition containing two kinds or more of this, and a coloring dye expressed by the general formula (in the formula, R7 shows a 2-8C alkyl group, R8 is a hydrogen atom, a 1-8C alkyl group, R8 is a hydrogen atom, a 1-8C alkyl group, or the same alkoxyl group, (u) is an integer of 1-5, and when (u) is 2 or more, R8 is a group being the same or different). |
