Diffusion transfer color photographic film unit

Claim 2

In a diffusion transfer color photographic film unit comprising a silver halide developing agent and a fogging agent and, at the same time, containing the following components therein (a) a support having thereon at least one internal latent image type direct positive photosensitive silver halide emulsion layer in combination with a non-diffusible dye releasing redox compound, (b) an image receiving layer, and (c) an alkaline processing composition and a means for spreading said processing composition inside the film unit, the improvement comprising the alkaline processing composition containing an unsubstituted saturated aliphatic or unsubstituted alicyclic monohydric alcohol having 3 to 10 carbon atoms.

Claim 3

The film unit according to claim 1, wherein the fogging agent is hydrazide.

Claim 4

The film unit according to claim 1, wherein the compound contained in the alkaline processing composition is a saturated alicyclic alcohol of 4 to 8 carbon atoms.

Claim 5

The film unit according to claim 1, wherein the compound contained in the alkaline processing composition is a straight chain aliphatic alcohol of 3 to 5 carbon atoms.

Claim 6

The film unit according to claim 1, wherein the compound contained in the alkaline processing composition is cyclopentanol, n-butanol or n-pentanol.

Claim 7

The film unit according to claim 1, characterized by comprising the silver halide developing agent and fogging agent and, at the same time, containing therein the following elements (a) a photosensitive element comprising a transparent support having thereon in succession the following layers: an image receiving layer, an alkaline sulution-permeable light reflecting layer, an internal latent image type direct positive red-sensitive silver halide emulsion layer in combination with a non-diffusible dye releasing redox compound, an internal latent image type direct positive green-sensitive silver halide emulsion layer in combination with a non-diffusible dye releasing redox compound and an internal latent image type direct positive blue-sensitive silver halide emulsion layer in combination with a non-diffusible dye releasing redox compound; (b) a cover sheet comprising a transparent sheet support superposed on the blue-sensitive silver halide emulsion layer, said support being provided thereon by coating a neutralization layer and a timing layer in that order; and (c) a rupturable pod containing therein an alkaline processing composition, an opacifying agent and a compound which is said saturated aliphatic or saturated alicyclic alcohol of 3 to 10 carbon atoms, said pod being arranged within the film unit in such a manner that by a compressive force applied prior to processing the exposed film unit to the pod, the contents of said pod may be allowed to spread over a space between the transparent sheet and the blue-sensitive silver halide emulsion layer.

Claim 8

The film unit according to claim 1, wherein the developing agent is 1-phenyl-3-pyrazolidone or 4-hydroxy-4-methyl-1-phenyl-3-pyrazolidone.

Claim 9

The film unit according to claim 2, 3, 4, 5, or 1 wherein the compound contained in the alkaline processing composition is present at a concentration of about 0.5 to about 10 g/l in said composition.

Claim 10

The film unit according to claim 1, wherein the non-diffusible dye releasing redox compound is represented by the following general formulas I to IV. ##STR4## wherein COL is a dye or dye precursor component, BALLAST is an organic ballast group having a size and structure of molecule capable of rendering said compound non-diffusible within the photosensitive element during the course of developing said film unit after exposure with an alkaline processing composition having a pH value of at least about 11, G is OR 1 or NHR 2 in which R 1 is hydrogen or a hydrolyzable component and R 2 is hydrogen or a substituted or unsubstituted alkyl group of 1 to 22 carbon atoms, if said R 2 is an alkyl group of at least 6 carbon atoms, said R 2 may be part of said ballast group or independent thereof, W represents an oxygen atom or ═N--R 3 in which R 3 represents a hydroxy or amino group, Y 0 represents a non-metal atomic group necessary for completing a benzene nucleus, which benzene nucleus may be condensed further with a 6-membered ring to form a naphthalene, quinoline or 1, 2, 3, 4-tetrahydronaphthalene nucleus, Y 1 represents a non-metal atomic group necessary for completing a 5- to 7-membered heterocyclic ring or a benzene nucleus, which benzene nucleus may be condensed further with a 6-membered ring to form a naphthalene, quinoline or 1, 2, 3, 4-tetrahydronaphthalene nucleus, Y 2 represents an atomic group necessary for completing a 5- or 6-membered saturated or unsaturated nonaromatic hydrocarbon ring, Y 3 represents a non-metal atomic group necessary for forming a 6-membered aromatic ring, R is hydrogen atom, a lower alkyl, aryl or heterocyclic group, n is a positive integer of 1 or 2, provided that n is 2 when G is OR 1 or NHR 2 and R 2 is hydrogen or an alkyl group of less than 8 carbon atoms.

Claim 11

The film unit according to claim 9 wherein said alkyl group for R 2 is methyl, ethyl, hydroxyethyl, propyl, butyl, sec-butyl, tert-butyl, cyclopropyl, 4-chlorobutyl, cyclobutyl, 4-nitroamyl, hexyl, cyclohexyl, octyl, decyl, octadecyl, dodecyl, benzyl or phenethyl.