| 摘要 |
PURPOSE:To improve the decoloring property of the title material, without adversely affecting the photographic characteristics of said material by incorporating a specified aqueous dyestuff in the material. CONSTITUTION:One or more kinds of the dyestuffs shown by formula I or II are incorporated in the emulsion layer or the another hydrophilic colloidal layer contd. in the material. In the formulas, R1 is alkyl or aryl group, etc., R2 is hydrogen atom. or alkyl group, R3 is H atom. or hydroxyl group, etc., R4 is H atom. or alkyl group, etc., Q is aryl group, X is a single bond or a divalent binding group, Y is sulfonic acid or carboxylic acid, L1-L3 are each methine group, (m) and (q) are each 1 or 2, (n) is 0 or 1, (p) is 0-4, (r1) and (r2) are each 2 or 3. When the water soluble dyestuff shown by the formula is used for a filter dyestuff, an irradiation preventing dyestuff or an antihalation dyestuff, the decoloring property and the shelf-life stability of the material are improved and the fogging of said material due to light can be reduced. |
