| 摘要 |
A photographic element comprising at least one layer containing a polymeric mordant represented by formula (I) <IMAGE> (I) wherein A represents a repeating unit derived from a copolymerizable monomer having at least two ethylenically unsaturated groups; B represents a repeating unit derived from a copolymerizable ethylenically unsaturated monomer other than the repeating unit of A and the repeating unit having the copolymerization ratio of z; R1 represents a hydrogen atom or a lower alkyl group; R2, R3, and R4 each represents an unsubstituted or substituted alkyl or aralkyl group, or two or more of R2, R3, and R4 are bonded to form a cyclic structure together with the adjacent nitrogen atom, and the total number of carbon atoms of R2, R3, and R4 is 12 or more; R5 represents an unsubstituted or substituted alkyl, alkoxy, or acylamino group having 1 to 20 carbon atoms, or a halogen atom; m is 0, 1 or 2, and n is an integer of from 1 to 12; X(-) represents an anion; and x is from 30 to 80 mol %, y is from 0 to 60 mol %, and z is from 10 to 70 mol %.
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