Color diffusion transfer photographic unit

Claim 1

A color diffusion transfer photographic unit comprising a silver halide photosensitive element having a light-sensitive silver halide emulsion layer, an image-receiving element having a dye-image receiving layer, and a support, said unit comprising a copolymer containing as comonomers a first monomer having quaternary nitrogen and represented by the following formula ##STR11## wherein R 1 represents hydrogen or an atomic group necessary to form an N-alkylenemaleimide ring together with A, R 2 represents hydrogen or lower alkyl, A represents alkylene, allylene, aralkylene, or a member selected from the group --COOR 6 --, --CONHR 6 --, --OCOR 6 -- and --CONR 6 -- wherein R 6 represents alkylene; R 3 , r 4 and R 5 represent respectively, alkyl, allyl, or aryl, or R 4 and R 5 are an atomic group necessary to form a heterocyclic ring or to form a heterocyclic ring together with A, and X represents an anion, and a second monomer having at least one fluorine atom and represented by the following formula ##STR12## wherein R 7 , R 8 , R 9 and R 10 respectively represent hydrogen, fluorine, lower alkyl, or a member selected from the group consisting of --(CF 2 ) n F (n=1 to 8), --O(CF 2 ) n F (n=2 to 8), --O(CF 2 ) n H (n=2 to 8), --O(CF 2 ) n OC 6 F 5 (n=2 to 3), --C--CH 2 (CF 2 ) n H(n=2 to 8), --OCH 2 (CF 2 ) n F (n=2 to 8) --COOCH 2 (CF 2 ) n H (n=2 to 8), --COO(CH 2 ) m NR 11 SO 2 (CF 2 ) n F (m=2 to 3, n =1 to 8; R 11 represents a C 1-14 alkyl group), --COO(CH 2 ) m NR 12 CO(CF 2 ) n F (m=2 to 3, n=1 to 8; R 12 represents a C 1-4 alkyl), --COO(CH 2 ) m NR 13 CO(CF 2 ) n H (m=2 to 3, n =1 to 8; R 13 represents a C 1-4 alkyl group), --OCO(CF 2 ) n H (n=1 to 8), --OCO(CF 2 ) n F (n=1 to 8), ##STR13## and R 7 , R 8 , R 9 and R 10 may be the same or different with the proviso that at least one of R 7 - R 10 must contain at least one fluorine atom.