| 摘要 |
PURPOSE:To reduce fogging of the coupler, and to improve color developing property and lightfastness of the titled material by incorporating a specific coupler to an emulsion layer of the titled material. CONSTITUTION:The silver halide emulsion layer contains a two equivalent yellow coupler shown by the formula wherein R1 is alkyl, cycloalkyl or aryl group, R2 is a group capable of substituting to a benzene ring, R3 is H, alkyl or aryl group, etc., X is alkylene, cycloalkylene or arylene group, etc., Y is alkyl, cycloalkyl or aryl group, etc., Z is a non-metal atom group necessary for forming a 5-6 membered ring, (m) is 0 or 1, (n) is 0-2. Thus, the color developing property and the preservability of the titled material are improved, and the titled material contg. the coupler having less tendency for fogging is obtd. |
