Polycyclic hydropyrimidine development restrainers

Claim 2

A process as defined in claim 2 wherein Z1 comprises 3 to 10 ring atoms selected from the group consisting of C,N,S and O.

Claim 3

A process as defined in claim 2 wherein Z1 is a heterocyclic or alicyclic ring system having 5 or 6 ring atoms.

Claim 4

A process as defined in claim 4 wherein said compound is:

Claim 5

A process as defined in claim 1 which comprises, in combination, the steps of exposing a photosensitive element which includes a support layer, carrying on one surface at least two selectively sensitized silver halide emulsion layers each having a dye, which dye is a silver halide developing agent, of a predetermined color associated therewith, each of said dyes being soluble and diffusible in alkali, contacting said exposed photosensitive element with an aqueous alkaline processing composition, effecting thereby development of latent images contained in each of said silver halide emulsions, immobilizing the dye associated with each of said emulsions as a result of said development, forming thereby an imagewise distribution of mobile dye as a function of the point-to-point degree of exposure thereof, transferring by imbibition at least a portion of each of said imagewise distributions of mobile dye to a superposed image-receiving element which comprises a dyeable polymeric layer to provide thereto a multicolored dye image.

Claim 6

A process of forming a multicolored image by diffusion transfer comprising: a. exposing a photosensitive element comprising a support carrying in turn a layer including a red-sensitive silver halide emulsion, a layer including a green-sensitive silver halide emulsion, and a layer including a blue-sensitive silver halide emulsion; said silver halide emulsions having associated therewith, respectively, a cyan dye developer, a magenta dye developer, and a yellow dye developer; b. applying an aqueous alkaline processing solution to said photosensitive element to initiate development of exposed silver halide, said dye developers being oxidized and thereby immobilized where development occurs; c. continuing said development of exposed silver halide for a predetermined period, said predetermined development period being sufficiently long to form an imagewise distribution of diffusible unoxidized dye developer in undeveloped areas of each of said silver halide emulsion layers as a function of said development, said unoxidized dye developers being transferred by diffusion to an image-receiving layer in superposed relationship with said silver halide emulsion layers to form said multicolor image; d. said process being carried out in the preSence of a compound of the formula:

Claim 7

A process as defined in claim 7 wherein said compound is represented by:

Claim 8

A photographic film unit comprising a support carrying on one surface at least two selectively sensitized silver halide layers, each having a dye of predetermined color associated therewith, which dye is a silver halide developing agent, said film unit including a compound of the formula:

Claim 9

The product of claim 9 wherein said compound is represented by:

Claim 10

The product of claim 10 wherein Z1 comprises 3 to 10 ring atoms selected from the group consisting of C, N, S and O.

Claim 11

The product of claim 11 wherein Z1 is a heterocyclic or alicyclic ring system having 5 or 6 ring atoms.

Claim 12

The product of claim 12 wherein said compound is

Claim 13

The product of claim 9 which includes a diffusion transfer image-receiving element fixed to at least one edge of said photosensitive element.

Claim 14

The product of claim 14 wherein said compound is disposed in said image-receiving element and X is hydrogen.

Claim 15

The product of claim 14 which includes a rupturable container retaining an aqueous alkaline processing composition fixed to one edge of said photosensitive and said image-receiving elements and adapted upon rupturing to distribute its contents intermediate said photosensitive element and said image-receiving element.

Claim 16

The product of claim 16 wherein said compound is disposed in said aqueous alkaline processing composition and X is hydrogen.

Claim 17

The product of claim 9 wherein said photosensitive silver halide emulsion layers comprise, in sequence, a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, and a blue-sensitive silver halide emulsion layer having associated therewith, respectively, cyan, magenta and yellow dyes, each of said dyes being a silver halide developing agent.

Claim 18

The product of claim 18 wherein said compound is disposed in at least one of said photosensitive silver halide emulsion layers and X is a group hydrolyzable by alkali.

Claim 19

The product of claim 19 wherein X is:

Claim 20

An image-receiving element for use in color diffusion transfer processes comprising a support carrying an image-receiving layer, a layer on said support containing a compound of the formula:

Claim 21

The product of claim 21 wherein said compound is represented by:

Claim 22

The product of claim 22 wherein Z1 is a heterocyclic or alicyclic ring system having 5 or 6 ring atoms.

Claim 23

The product of claim 22 wherein said compound is:

Claim 24

The product of claim 21 wherein said compound is disposed in said image-receiving layer.

Claim 25

The product of claim 21 wherein said compound is disposed in a layer between said image-receiving layer and said support.

Claim 26

The product of claim 26 wherein said layer containing said compound is an alkaline solution permeable polymeric spacer layer positioned between said image-receiving layer and a polymeric acid neutralizing layer.

Claim 27

The product of claim 27 wherein said spacer layer has decreasing permeability to alkaline solution with increasing temperature.