Eastman-kodak Company

Anthony M Barnett

Julie Baker

Colin J Gray

David A Hallbery

Jeffrey K Green

Roger J Owers

The invention provides a diffusion transfer receiver comprising a support with a non-light-sensitive image receiving layer coated onto each face thereof, said image receiving layer in each case comprising a catalytic nuclei layer for physical development of transferred complexed silver halide and each composite comprising a diffusion modifying active component which is preferably a tone controlling compound. The composites of Side 1 and Side 2 are different constitutions so as to provide receivers suitable for different end users. For example Side 1 can be made suitable for creative designers while Side 2 can be made suitable for pre-sensitized plate-makers. The invention also provides a method for improving transmission density of a receiver sheet in a non-light-sensitive image receiving layer of a silver diffusion transfer process which method comprises utilizing in the receiver layer an S-thiuronium alkyl sulfonate transmission density enhancer.

Diffusion transfer receiver

Photographic donor material with non-photosensitive silver halide layer

Silver image bleaching solution and process

An aqueous lithographic conditioner solution or fix composition for use with lithographic plates made by the silver salt diffusion transfer process comprises (a) an oleophilic argentophile, (b) a quaternary ammonium surfactant and (c) a quaternary ammonium surfactant solubilized by the addition of alkyleneoxy units, the proportions and nature of the components being such as to provide the desired solution.

Aqueous solutions of oleophilic compounds

A non-light-sensitive image-receiving element useful in a silver complex diffusion transfer process includes at least one layer containing certain S-thiuronium alkyl sulfonates which act as tone controlling agents that accelerate the physical development of silver.

Silver complex diffusion transfer process employing an image-receiving

A non-light-sensitive image-receiving element useful in a silver complex diffusion transfer process includes at least one layer containing certain tone controlling agents that accelerate the physical development of silver. Compounds useful for this purpose are alkyl disulfides substituted by a water solubilizing group, thiazolidine carboxylic acids, .gamma.-thiobutyrolactones, higher alkyl thioglycolates, and carboxy-substituted rhodanines.

Image receiving element for use in a silver complex diffusion transfer

A photographic donor material is described which comprises silver halide having at least 95% silver chloride, which material also contains a minor amount of bromide ions, an amount of development inhibitor and which has a hydrophilic overcoat layer to retard access of processing solution to the silver halide. The photographic material is useful in a silver salt diffusion transfer process.

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Bushey, United Kingdom

Anthony M Barnett