Eastman-kodak Company

George Villard

Ignazio S Ponticello

Gerald A Campbell

Lewis R Hamilton

Hyman L Cohen

Glenn T Pearce

Michael R Roberts

Henry J Sniadoch

Elizabeth V Patton

Susan C Gross, Deceased

Marjorie M Datskow, Executrix

This invention provides a photographic element containing a polymer layer which reflects a development inhibitor or its precursor released from a DIR compound thereby retarding the diffusion of the development inhibitor to another layer. The polymers used in the barrier layer contain from about 1.times.10.sup.-5 to about 4.times.10.sup.-3 ion forming functional groups. The preferred polymers comprise repeating units of the formula --(A).sub.m -(B).sub.n -- with A derived from a hydrophobic monomer and B derived from an ionic hydrophilic monomer with the more preferred monomers being acrylates, methacrylates, acrylamides and methacrylamides. The invention also provides a method of processing a photographic element containing such a barrier layer.

Development inhibitor reflector layers

A photographic element comprises a support having thereon a layer containing a copolymer comprising a vinylimidazole in association with metal ions. The metal forms a novel complex with the polymer and photographic elements comprising these materials are useful in diffusion transfer processes, and particularly useful with metal-coordinating dyes such as chelating dyes or dye-forming materials to provide a metallized dye image.

Metal complexes of copolymers comprising vinylimidazole and their use in

A photographic element comprising a support, a layer containing certain photographically useful and/or active fragments and a layer containing a dye mordant composition comprising a polymer having recurring units of the formula selected from the group consisting of: ##STR1## wherein: R.sup.2 is hydrogen or alkyl;

Photographic film units containing a polymeric mordant which covalently

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Rochester, NY, United States of America

George Villard