Novel photographic products and processes

Claim 2

A product as defined in claim 2 wherein said auxiliary developing agent is disposed in a layer adjacent said silver halide layer.

Claim 3

A product as defined in claim 2 wherein said auxiliary developing agent is disposed in said silver halide layer.

Claim 4

A product as defined in claim 1 wherein said haloalkyl ester is the monochloroacetate ester.

Claim 5

A product as defined in claim 1 which includes as a second auxiliary developing agent a hydroquinone silver halide developing agent which is substantially colorless at least in its unoxidized form.

Claim 6

A product as defined in claim 6 wherein said hydroquinone silver halide developing agent is 4-methylphenyl hydroquinone.

Claim 7

A product as defined in claim 1 which comprises a plurality of layers including a support layer carrying on one surface, in order, a silver halide emulsion layer having associated therewith a diffusion transfer process dye image-forming material which has a dihydroxyphenyl silver halide developing function; an auxiliary silver halide developing agent selected from the group consisting of 2,6-di-t-butyl hydroquinone; 2,5-di-t-butyl hydroquinone; durohydroquinone; and the alkyl and haloalkyl ester precursors thereof; reflecting means adapted to mask dye image-forming material associated with said silver halide emulsion layer subsequent to processing of the film unit; and a polymeric layer dyeable by said dye image-forming material.

Claim 8

A product as defined in claim 8 which is adapted to be processed by passing said member between a pair of juxtaposed pressure-applying members and which comprises, in combination: a photosensitive element including a composite structure containing as essential layers, in sequence, a first dimensionally stable layer opaque to incident actinic radiation, a photosensitive silver halide emulsion layer having associated therewith a diffusion transfer process dye image-forming material which has a dihydroxy-phenyl silver halide developing function, and means securing said layers in substantially fixed relationship; a rupturable container retaining an alkaline processing composition containing reflecting agent fixedly positioned and extending transverse a leading edge of sAid photosensitive element to effect unidirectional discharge of said container''s processing composition between said dyeable polymeric layer and the photosensitive silver halide emulsion layer next adjacent thereto upon application of compressive force to said container; and an auxiliary silver halide developing agent selected from the group consisting of 2,6-di-t-butyl hydroquinone; 2,5-di-t-butyl hydroquinone; durohydroquinone; and the alkyl and haloalkyl ester precursors thereof.

Claim 9

A product as defined in claim 9 wherein said auxiliary silver halide developing agent is disposed in said silver halide emulsion layer.

Claim 10

A product as defined in claim 10 wherein said auxiliary silver halide developing agent is disposed as the haloalkyl ester precursor.

Claim 11

A product as defined in claim 9 wherein said auxiliary silver halide developing agent is disposed in said rupturable container.

Claim 12

A product as defined in claim 9 wherein said reflecting agent is titanium dioxide.

Claim 13

A product as defined in claim 9 including at least one acid reacting polymeric layer positioned intermediate at least one of said first dimensionally stable opaque layers and the photosensitive silver halide emulsion layer next adjacent thereto, and said dimensionally stable transparent layer and the dyeable polymeric layer next adjacent thereto and said processing composition comprises an aqueous alkaline processing composition.

Claim 14

A product as defined in claim 14 wherein said polymeric acid layer contains sufficient acidifying function to effect reduction of said processing composition from a first pH at which said dye image-forming material is substantially soluble and diffusible to a second pH at which said image-forming material is substantially nondiffusible.

Claim 15

A product as defined in claim 15 wherein said photosensitive element includes at least two selectively sensitized silver halide emulsion layers, each having a dye of predetermined color associated therewith, which has a dihydroxyphenyl silver halide developing function, each of said dyes soluble and diffusible in alkaline processing composition as a function of the point-to-point degree of exposure of the respective emulsion associated therewith at said first pH and substantially non-diffusible in said alkaline processing composition at said second pH.

Claim 16

A process for forming photographic images which includes, in combination, the steps of exposing a photosensitive element comprising a plurality of layers including a support carrying on one surface a photosensitive silver halide layer, said silver halide layer having a dye associated therewith, which has a dihydroxyphenyl silver halide developing function; contacting said photosensitive layer with an aqueous alkaline processing composition and an auxiliary silver halide developing agent selected from the group consisting of 2,6-di-t-butyl hydroquinone; 2,5-di-t-butyl hydroquinone; durohydroquinone; and the alkyl and haloalkyl ester precursors thereof for a time sufficient to develop a latent image in said photosensitive silver halide layer to a visible image.

Claim 17

A process as defined in claim 17 wherein said auxiliary developing agent is initially disposed in said aqueous alkaline processing composition.

Claim 18

A process as defined in claim 17 wherein said auxiliary developing agent is initially associated with said photosensitive element.

Claim 19

A process as defined in claim 19 wherein said auxiliary developing agent is initially disposed in said silver halide layer.

Claim 20

A process as defined in claim 20 wherein said auxiliary silver halide developing agent is initially disposed in said silver halide layer as said precursor.

Claim 21

A process as defined in claim 17 which comprises, in combination, the steps of: a. exposing a photographic film unit which comprises a plurality of layers including a photosensitive silver halide layer having associated therewith a diffusion transfer process dye image-Providing material which has a dihydroxyphenyl silver halide developing function and a diffusion transfer process image-receiving layer adapted to receive solubilized image-forming material diffusing thereto; b. contacting said photosensitive silver halide emulsion with an aqueous alkaline processing composition and an auxiliary silver halide developing agent selected from the group consisting of 2,6-di-t-butyl hydroquinone; 2,5-di-t-butyl hydroquinone; durohydroquinone; and the alkyl and haloalkyl ester precursors thereof; c. effecting thereby substantial development of said silver halide emulsion; d. forming thereby an imagewise distribution of mobile image-forming material as a function of the point-to-point degree of emulsion exposure; and e. transferring by diffusion at least a portion of said imagewise distribution of mobile image-forming material to said layer adapted to receive said material to provide thereto an image in terms of said imagewise distribution.