Polaroid Corporation

Polaroid Corporation, Patent Dept.

Richard J Murphy

Michael S Viola

Edward P Lindholm

Irena Y Bronstein-Bonte

Gerald P Harwood, Jr

Yung T Chen

Xiaojia Z Wang

Gary S LaPointe

Kenneth J McCarthy

Shawn P Lambert

An ink jet recording sheet comprises a support carrying an ink-receiving layer, this layer comprising a hydrophilic polymer, preferably poly(vinyl alcohol) and a poly(vinylpyridine). The images formed using this sheet display good water fastness.

Ink jet recording sheet

Diffusion transfer films and processes are disclosed wherein the processing composition includes a light reflecting pigment and an optical filter agent, and the image-receiving layer carries an overcoat comprising a polyoxyalkylene decolorizing agent hydrogen bonded with at least one other polymer and a salt of polyvinyl hydrogen phthalate, the overcoat layer being adapted to decolorize optical filter agent immediately adjacent the interface between the processing composition and the overcoat layer.

Polyoxyalkylene overcoats for image-receiving elements

Photographic processing compositions containing a light-reflecting pigment and a styrene-butadiene copolymer are disclosed. The photographic processing compositions are useful in photographic diffusion transfer film units and processes for the provision of permanent photographic laminates. A light-reflecting layer formed in a photographic laminate from such a processing composition exhibits a reduced tendency toward cohesion or adhesion failure and separation.

Photographic processing composition with poly(diacetone acrylamide)

Image-receiving elements for use in photographic diffusion transfer products and processes and including a unitary image-receiving and decolorizing layer are disclosed. The unitary image-receiving and decolorizing layer comprises a mixture of gelatin, an organic monobasic or polybasic acid or anhydride and a copolymeric mordant comprising recurring units from a vinylpyridine and from a copolymerizable vinylbenzyl quaternary ammonium salt. The image-receiving elements can be used in diffusion transfer products and processes for the provision of color images which appear satisfactorily to emerge from a white background and which exhibit desirable densitometric characteristics.

Image-receiving element with unitary image-receiving and decolorizing

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Dennis Port, MA, United States of America

Richard J Murphy