| 摘要 |
PURPOSE:To improve the fastness of a cyan dye image by incorporating at least one kind of specific compds. into one layer of a cyan dye image forming layer and the adjacent layer thereof. CONSTITUTION:At least one of the compds. expressed by the formula I are incorporated into at least one layer of the cyan dye forming layer on a base and the adjacent layer thereof. In the formula I, R1 to R4 denote a hydrogen atom, alkyl group, alkenyl group, etc.; the total sum of 1 to 4C is >=6. However, the compd. with which R1 and R2 or R3 and R3 form a ring of a sulfonyl group or sulfinyl group via alkylene on both sides thereof and the compd. in which the hydrogen atom and aryl sulfonyl group are simultaneously bound with the same nitrogen atom are excluded. The dye image exhibits the extremely high fastness to light, heat or wet heat in this way. |
