Timing layers and auxiliary neutralizing layer for color transfer assemblages containing positive-working redox dye-releasers

Claim 2

In a photographic assemblage comprising: (a) a photographic element comprising a support having thereon at least one negative-working, photosensitive silver halide emulsion layer having associated therewith a positive-working, redox dye releaser; (b) a dye image-receiving layer; (c) a neutralizing layer for neutralizing an alkaline processing composition; (d) a first timing layer located between said neutralizing layer and said silver halide emulsion layer; and (e) a second timing layer located between said first timing layer and said neutralizing layer; said first and second timing layers being so located that said processing composition must first permeate said timing layers before contacting said neutralizing layer, said neutralizing layer being located on the side of said second timing layer which is farthest from said dye image-receiving layer, the improvement wherein: (i) said first timing layer has a negative temperature coefficient; (ii) said second timing layer has a penetration time by said alkaline processing composition that is greater than the penetration time of said first timing layer, so that said neutralizing layer will be permeated by said alkaline processing composition only after development of said silver halide emulsion has been substantially completed; and (iii) an auxiliary neutralizing layer is present and is located between said first and second timing layers, the concentration of available acid supplied by said auxiliary neutralizing layer being approximately 3 to 20 percent of the available acid supplied by said neutralizing layer.

Claim 3

The assemblage of claim 1 wherein said positive-working redox dye-releaser is a quinone redox dye-releaser and said photographic element contains an incorporated reducing agent.

Claim 4

The assemblage of claim 2 wherein said quinone redox dye-releaser has the formula: ##STR9## wherein: Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible in said photographic element during development in said alkaline processing composition; W represents at least the atoms necessary to complete a quinone nucleus; r is a positive integer of 1 or 2; R is an alkyl radical having 1 to about 40 carbon atoms or an aryl radical having 6 to about 40 carbon atoms; k is a positive integer of 1 to 2 and is 2 when R is a radical of less than 8 carbon atoms; and Dye is an organic dye or dye precursor moiety.

Claim 5

In the assemblage of claim 1, the further improvement wherein said first timing layer is an N-substituted acrylamide polymer or copolymer.

Claim 6

In the assemblage of claim 4, the further improvement wherein said first timing layer comprises poly(N-isopropylacrylamide-co-acrylamide) (90:10 weight ratio).

Claim 7

In the assemblage of claim 1, the further improvement wherein the concentration of available acid from said auxiliary neutralizing layer is from about 5 to about 30 meq./m 2 .

Claim 8

In the assemblage of claim 1, the further improvement wherein the penetration time by said alkaline processing composition of said first timing layer is from about 1 to about 3 minutes and the penetration time by said alkaline processing composition of said second timing layer is from about 5 to about 7 minutes.

Claim 9

In a photographic assemblage comprising: (a) a photographic element comprising a support having thereon at least one negative-working, photosensitive silver halide emulsion layer having associated therewith a positive-working, redox dye releaser; (b) a dye image-receiving layer; (c) an alkaline processing composition and means for discharging same within said assemblage; (d) a neutralizing layer for neutralizing said alkaline processing composition; (e) a first timing layer located between said neutralizing layer and said silver halide emulsion layer; and (f) a second timing layer located between said first timing layer and said neutralizing layer; said first and second timing layers being so located that said processing composition must first permeate said timing layers before contacting said neutralizing layer, said neutralizing layer being located on the side of said second timing layer which is farthest from said dye image-receiving layer, said assemblage containing a silver halide developing agent, the improvement wherein: (i) said first timing layer has a negative temperature coefficient; (ii) said second timing layer has a penetration time by said alkaline processing composition that is greater than the penetration time of said first timing layer, so that said neutralizing layer will be permeated by said alkaline processing composition only after development of said silver halide emulsion has been substantially completed; and (iii) an auxiliary neutralizing layer is present and is located between said first and second timing layers, the concentration of available acid supplied by said auxiliary neutralizing layer being approximately 3 to 20 percent of the available acid supplied by said neutralizing layer.

Claim 10

In a photographic assemblage comprising: (a) a photographic element comprising a support having thereon at least one negative-working, photosensitive silver halide emulsion layer having associated therewith a positive-working, redox dye releaser; (b) a dye image-receiving layer; (c) an alkaline processing composition and means for discharging same within said assemblage; (d) a neutralizing layer for neutralizing said alkaline processing composition; (e) a first timing layer located between said neutralizing layer and said silver halide emulsion layer; and (f) a second timing layer located between said first timing layer and said neutralizing layer; said first and second timing layers being so located that said processing composition must first permeate said timing layers before contacting said neutralizing layer, said neutralizing layer being located on the side of said second timing layer which is farthest from said dye image-receiving layer, said assemblage containing a silver halide developing agent, the improvement wherein: (i) said first timing layer has a negative temperature coefficient; (ii) said second timing layer has a penetration time by said alkaline processing composition that is greater than the penetration time of said first timing layer, so that said neutralizing layer will be permeated by said alkaline processing composition only after development of said silver halide emulsion has been substantially completed; and (iii) an auxiliary neutralizing layer is present and is located between said first and second timing layers, the concentration of available acid supplied by said auxiliary neutralizing layer being approximately 3 to 20 percent of the available acid supplied by said neutralizing layer.

Claim 11

The assemblage of claim 8 wherein: (a) said dye image-receiving layer is located between said support and said silver halide emulsion layer; and (b) said assemblage also includes a transparent cover sheet over the layer outermost from said support.

Claim 12

In the assemblage of claim 9, the further improvement wherein said transparent cover sheet is coated with, in sequence, said neutralizing layer, said second timing layer, said auxiliary neutralizing layer and said first timing layer.

Claim 13

The assemblage of claim 10 wherein said discharging means is a rupturable container containing said alkaline processing composition and an opacifying agent, said container being so positioned during processing of said assemblage that a compressive force applied to said container will effect a discharge of the container's contents between said transparent sheet and the layer outermost from said support.

Claim 14

The assemblage of claim 8 wherein said support having thereon said silver halide emulsion layer is opaque, and said dye image-receiving layer is located on a separate transparent support superposed on the layer outermost from said opaque support.

Claim 15

In the assemblage of claim 12, the further improvement wherein said transparent support has thereon, in sequence, said neutralizing layer, said second timing layer, said auxiliary neutralizing layer, said first timing layer and said dye image-receiving layer.

Claim 16

In the assemblage of claim 12, the further improvement wherein said opaque support has thereon, in sequence, said neutralizing layer, said second timing layer, said auxiliary neutralizing layer, said first timing layer and said silver halide emulsion layer.

Claim 17

In an integral photographic assemblage comprising: (a) a photographic element comprising a transparent support having thereon the following layers in sequence: a dye image-receiving layer; an alkaline solution-permeable, light-reflective layer; an alkaline solution-permeable, opaque layer; a red-sensitive, negative-working, silver halide emulsion layer having a ballasted, positive-working, redox cyan dye-releaser associated therewith; a green-sensitive, negative-working, silver halide emulsion layer having a ballasted, positive-working, redox magenta dye-releaser associated therewith; and a blue-sensitive, negative-working, silver halide emulsion layer having a ballasted, positive-working, redox yellow dye-releaser associated therewith; (b) a transparent sheet superposed over said blue-sensitive silver halide emulsion layer and comprising a transparent support coated with, in sequence, a neutralizing layer, a second timing layer, and a first timing layer; and (c) a rupturable container containing an alkaline processing composition and an opacifying agent, said container being so positioned during processing of said assemblage that a compressive force applied to said container will effect a discharge of the container's contents between said transparent sheet and said blue-sensitive silver halide emulsion layer; said assemblage containing a silver halide developing agent, the improvement wherein: (i) said first timing layer has a negative temperature coefficient; (ii) said second timing layer has a penetration time by said alkaline processing composition that is greater than the penetration time of said first timing layer, so that said neutralizing layer will be permeated by said alkaline processing composition only after development of said silver halide emulsion has been substantially completed; and (iii) an auxiliary neutralizing layer is present and is located between said first and second timing layers, the concentration of available acid supplied by said auxiliary neutralizing layer being approximately 3 to 20 percent of the available acid supplied by said neutralizing layer.

Claim 18

In an integral photographic assemblage comprising: (a) a photographic element comprising a transparent support having thereon the following layers in sequence: a dye image-receiving layer; an alkaline solution-permeable, light-reflective layer; an alkaline solution-permeable, opaque layer; a red-sensitive, negative-working, silver halide emulsion layer having a ballasted, positive-working, redox cyan dye-releaser associated therewith; a green-sensitive, negative-working, silver halide emulsion layer having a ballasted, positive-working, redox magenta dye-releaser associated therewith; and a blue-sensitive, negative-working, silver halide emulsion layer having a ballasted, positive-working, redox yellow dye-releaser associated therewith; (b) a transparent sheet superposed over said blue-sensitive silver halide emulsion layer and comprising a transparent support coated with, in sequence, a neutralizing layer, a second timing layer, and a first timing layer; and (c) a rupturable container containing an alkaline processing composition and an opacifying agent, said container being so positioned during processing of said assemblage that a compressive force applied to said container will effect a discharge of the container's contents between said transparent sheet and said blue-sensitive silver halide emulsion layer; said assemblage containing a silver halide developing agent, the improvement wherein: (i) said first timing layer has a negative temperature coefficient; (ii) said second timing layer has a penetration time by said alkaline processing composition that is greater than the penetration time of said first timing layer, so that said neutralizing layer will be permeated by said alkaline processing composition only after development of said silver halide emulsion has been substantially completed; and (iii) an auxiliary neutralizing layer is present and is located between said first and second timing layers, the concentration of available acid supplied by said auxiliary neutralizing layer being approximately 3 to 20 percent of the available acid supplied by said neutralizing layer.

Claim 19

The assemblage of claim 15 wherein said positive-working redox dye-releaser is a quinone redox dye-releaser and said photographic element contains an incorporated reducing agent.

Claim 20

The assemblage of claim 16 wherein said quinone redox dye-releaser has the formula: ##STR10## wherein: Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible in said photographic element during development in said alkaline processing composition; W represents at least the atoms necessary to complete a quinone nucleus; r is a positive integer of 1 or 2; R is an alkyl radical having 1 to about 40 carbon atoms or an aryl radical having 6 to about 40 carbon atoms; k is a positive integer of 1 to 2 and is 2 when R is a radical of less than 8 carbon atoms; and Dye is an organic dye or dye precursor moiety.

Claim 21

In the assemblage of claim 15, the further improvement wherein said first timing layer is an N-substituted acrylamide polymer or copolymer.

Claim 22

In the assemblage of claim 18, the further improvement wherein said first timing layer comprises poly(N-isopropylacrylamide-co-acrylamide) (90:10 weight ratio).

Claim 23

In the assemblage of claim 15, the further improvement wherein the concentration of available acid from said auxiliary neutralizing layer is from about 5 to about 30 meq./m 2 .

Claim 24

In the assemblage of claim 15, the further improvement wherein the penetration time by said alkaline processing composition of said first timing layer is from about 1 to about 3 minutes and the penetration time by said alkaline processing composition of said second timing layer is from about 5 to about 7 minutes.

Claim 25

A dye image-receiving element adapted to be permeated by an alkaline processing composition, said element comprising a support having thereon, in sequence, a neutralizing layer, a second timing layer, an auxiliary neutralizing layer, a first timing layer and a dye image-receiving layer, said first timing layer having a negative temperature coefficient, said second timing layer having a penetration time by said alkaline processing composition that is greater than the penetration time of said first timing layer, and the concentration of available acid supplied by said auxiliary neutralizing layer being approximately 3 to 20 percent of the available acid supplied by said neutralizing layer.

Claim 26

A dye image-receiving element adapted to be permeated by an alkaline processing composition, said element comprising a support having thereon, in sequence, a neutralizing layer, a second timing layer, an auxiliary neutralizing layer, a first timing layer and a dye image-receiving layer, said first timing layer having a negative temperature coefficient, said second timing layer having a penetration time by said alkaline processing composition that is greater than the penetration time of said first timing layer, and the concentration of available acid supplied by said auxiliary neutralizing layer being approximately 3 to 20 percent of the available acid supplied by said neutralizing layer.

Claim 27

The element of claim 22 wherein said first timing layer is an N-substituted acrylamide polymer or copolymer.

Claim 28

The element of claim 23 wherein said first timing layer comprises poly(N-isopropylacrylamide-co-acrylamide) (90:10 weight ratio).

Claim 29

The element of claim 22 wherein the concentration of available acid from said auxiliary neutralizing layer is from about 5 to about 30 meq./m 2 .

Claim 30

The element of claim 22 wherein the penetration time by said alkaline processing composition of said first timing layer is from about 1 to about 3 minutes and the penetration time by said alkaline processing composition of said second timing layer is from about 5 to about 7 minutes.

Claim 31

A cover sheet adapted to be permeated by an alkaline processing composition, said cover sheet comprising a transparent support having thereon, in sequence, a neutralizing layer, a second timing layer, an auxiliary neutralizing layer and a first timing layer, said first timing layer having a negative temperature coefficient, said second timing layer having a penetration time by said alkaline processing composition that is greater than the penetration time of said first timing layer layer, and the concentration of available acid supplied by said auxiliary neutralizing layer being approximately 3 to 20 percent of the available acid supplied by said neutralizing layer.

Claim 32

A cover sheet adapted to be permeated by an alkaline processing composition, said cover sheet comprising a transparent support having thereon, in sequence, a neutralizing layer, a second timing layer, an auxiliary neutralizing layer and a first timing layer, said first timing layer having a negative temperature coefficient, said second timing layer having a penetration time by said alkaline processing composition that is greater than the penetration time of said first timing layer layer, and the concentration of available acid supplied by said auxiliary neutralizing layer being approximately 3 to 20 percent of the available acid supplied by said neutralizing layer.

Claim 33

The cover sheet of claim 27 wherein said first timing layer is an N-substituted acrylamide polymer or copolymer.

Claim 34

The cover sheet of claim 28 wherein said first timing layer comprises poly(N-isopropylacrylamide-co-acrylamide) (90:10 weight ratio).

Claim 35

The cover sheet of claim 27 wherein the concentration of available acid from said auxiliary neutralizing layer is from about 5 to about 30 meq./m 2 .

Claim 36

The cover sheet of claim 27 wherein the penetration time by said alkaline processing composition of said first timing layer is from about 1 to about 3 minutes and the penetration time by said alkaline processing composition of said second timing layer is from about 5 to about 7 minutes.

Claim 37

In a photographic element adapted to be permeated by an alkaline processing composition, said element comprising a support having thereon, in sequence, a neutralizing layer, a second timing layer, a first timing layer, and at least one negative-working, photosensitive silver halide emulsion layer having associated therewith a positive-working, redox dye-releaser, the improvement wherein: (i) said first timing layer has a negative temperature coefficient; (ii) said second timing layer has a penetration time by said alkaline processing composition that is greater than the penetration time of said first timing layer, so that said neutralizing layer will be permeated by said alkaline processing composition only after development of said silver halide emulsion has been substantially completed; and (iii) an auxiliary neutralizing layer is present and is located between said first and second timing layers, the concentration of available acid supplied by said auxiliary neutralizing layer being approximately 3 to 20 percent of the available acid supplied by said neutralizing layer.

Claim 38

In a photographic element adapted to be permeated by an alkaline processing composition, said element comprising a support having thereon, in sequence, a neutralizing layer, a second timing layer, a first timing layer, and at least one negative-working, photosensitive silver halide emulsion layer having associated therewith a positive-working, redox dye-releaser, the improvement wherein: (i) said first timing layer has a negative temperature coefficient; (ii) said second timing layer has a penetration time by said alkaline processing composition that is greater than the penetration time of said first timing layer, so that said neutralizing layer will be permeated by said alkaline processing composition only after development of said silver halide emulsion has been substantially completed; and (iii) an auxiliary neutralizing layer is present and is located between said first and second timing layers, the concentration of available acid supplied by said auxiliary neutralizing layer being approximately 3 to 20 percent of the available acid supplied by said neutralizing layer.

Claim 39

The element of claim 32 wherein said positive-working redox dye-releaser is a quinone redox dye-releaser and said photographic element contains an incorporated reducing agent.

Claim 40

The element of claim 33 wherein said quinone redox dye-releaser has the formula: ##STR11## wherein: Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible in said photographic element during development in said alkaline processing composition; W represents at least the atoms necessary to complete a quinone nucleus; r is a positive integer of 1 or 2; R is an alkyl radical having 1 to about 40 carbon atoms or an aryl radical having 6 to about 40 carbon atoms; k is a positive integer of 1 to 2 and is 2 when R is a radical of less than 8 carbon atoms; and Dye is an organic dye or dye precursor moiety.

Claim 41

In the element of claim 32, the further improvement wherein said first timing layer is an N-substituted acrylamide polymer or copolymer.

Claim 42

In the element of claim 35, the further improvement wherein said first timing layer comprises poly(N-isopropylacrylamide-co-acrylamide) (90:10 weight ratio).

Claim 43

In the element of claim 32, the further improvement wherein the concentration of available acid from said auxiliary neutralizing layer is from about 5 to about 30 meq./m 2 .

Claim 44

In the element of claim 32, the further improvement wherein the penetration time by said alkaline processing composition of said first timing layer is from about 1 to about 3 minutes and the penetration time by said alkaline processing composition of said second timing layer is from about 5 to about 7 minutes.