Color diffusion transfer unit with polymeric quaternary nitrogen mordant

Claim 1

A color diffusion transfer photographic unit containing a silver halide photosensitive element having a support and at least one silver halide emulsion layer thereon, and an image receiving element having a support and an image-receiving layer thereon, said unit comprising a polymer having a first monomer having a tertiary nitrogen atom represented by the following formulae ##STR9## wherein R 1 represents hydrogen or methyl group, R 2 and R 3 individually represent lower alkyl, phenyl or aralkyl, and R 2 and R 3 may, together, form a 5- or 6-membered heterocyclic ring with the nitrogen wherein said ring may have at least one substituent; and A represents a simple bond or a bond group comprising at least two members selected from the group consisting of hydrogen, carbon, nitrogen and oxygen; A 1 , Z 1 and Z 2 are atoms necessary to complete a 5- or 6-membered heterocyclic ring containing the nitrogen wherein said ring may have at least one substituent; at least 5 mole % of said first monomer having said tertiary nitrogen grafted and/or graft-copolymerized with a second monomer, represented by the following formulae ##STR10## wherein R 4 and R 7 individually represent hydrogen, halogen, and methyl; R 5 and R 8 individually represent lower alkyl, phenyl and aralkyl and R 5 and R 6 as well as R 8 and R 10 may cooperatively form a 5- or 6-membered heterocyclic ring containing the nitrogen wherein said ring may have at least one substituent; R 6 and R 9 individually represent lower alkyl and aralkyl; R 10 represents hydrogen, lower alkyl and aralkyl; and B and B' individually represent a single bond, or a bond group comprising at least two members selected from hydrogen, carbon, nitrogen and oxygen; B 1 , Z 3 and Z 4 , as well as B' 1 , Z 5 and Z 6 are atoms necessary to complete a 5- or 6-membered heterocyclic ring containing the nitrogen, wherein said ring may have at least one substituent; and X is anion.