Polymers for use in dye image-receiving layers of image transfer film units
AssigneeEastman Kodak Company
InventorKarel L. Petrak
Life of this patent
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Abstract
A photographic element comprises a support having thereon a layer containing a novel polymer comprising a recurring unit having the formula: ##STR1## said element comprising a source of metal ions. The elements are useful in diffusion transfer processes, and particularly useful with chelating dyes or dye-forming materials to provide a metallized dye image.
Claims34
A photographic element comprising a support having thereon a layer containing a water-soluble polymer comprising a recurring unit of the formula:
- ##STR29## wherein:
- L is selected from the group consisting of a single bond and a bivalent linking group;
- Z represents the atoms necessary to complete a heterocyclic nucleus;
- R is selected from the group consisting of a single bond and alkylene;
- X.sup.- is an anion;
- and
- R.sup.1 and R.sup.2 are independently chelating groups, and said polymer having associated therewith a source of metal ions.
In a photographic element comprising a support having thereon at least one dye-receiving layer, at least one photosensitive silver halide emulsion layer and at least one layer containing a chelating dye or dye-forming material, the improvement wherein the dye-receiving layer comprises a layer containing a water-soluble polymer comprising a recurring unit of the formula:
- ##STR30## wherein:
- L is selected from the group consisting of a single bond and a bivalent linking group;
- Z represents the atoms necessary to complete a heterocyclic nucleus;
- R is selected from the group consisting of a single bond and alkylene;
- X.sup.- is an anion;
- and
- R.sup.1 and R.sup.2 are independently chelating groups, and said polymer having associated therewith a source of metal ions.
A dye image-receiving element comprising a support having thereon a layer containing a water-soluble polymer comprising a recurring unit of the formula:
- ##STR31## wherein:
- L is selected from the group consisting of a single bond and a bivalent linking group;
- Z represents the atoms necessary to complete a heterocyclic nucleus;
- R is selected from the group consisting of a single bond and alkylene;
- R.sup.1 and R.sup.2 are independently chelating groups;
- and
- X.sup.- is an anion.
In an image transfer film unit comprising:
- (1) a support having thereon at least one layer containing a photosensitive silver halide emulsion having associated therewith a chelating dye or chelating dye-forming material;
- (2) a dye image-receiving layer;
- and
- (3) an alkaline processing composition and means for discharging same within said film unit in contact with said photosensitive layer;
- said film unit containing a silver halide developing agent, the improvement wherein the dye image-receiving layer contains a water-soluble polymer comprising a recurring unit of the formula:
- ##STR32## wherein:
- L is selected from the group consisting of a single bond and a bivalent linking group;
- Z represents the atoms necessary to complete a heterocyclic nucleus;
- R is selected from the group consisting of a single bond and alkylene;
- R.sup.1 and R.sup.2 are independently chelating groups;
- and
- X.sup.- is an anion,
- said polymer having associated therewith a source of metal ions.
In an image transfer film unit comprising:
- (1) a support having thereon at least one layer containing a photosensitive silver halide emulsion having associated therewith a chelating dye or chelating dye-forming material;
- (2) a dye image-receiving layer;
- (3) an alkaline processing composition and means for discharging same within said film unit in contact with said photosensitive silver halide emulsion;
- (4) a neutralizing layer for neutralizing said alkaline processing composition;
- and
- (5) a barrier which is permeable by said alkaline processing composition after a predetermined time, and which is located between said neutralizing layer and said photosensitive silver halide emulsion;
- said film unit containing a silver halide developing agent, the improvement wherein said dye-receiving layer comprises a water-soluble polymer comprising a recurring unit of the formula:
- ##STR33## wherein:
- L is selected from the group consisting of a single bond and a bivalent linking group;
- Z represents the atoms necessary to complete a heterocyclic nucleus;
- R is selected from the group consisting of a single bond and alkylene;
- R.sup.1 and R.sup.2 are independently chelating groups;
- and
- X.sup.- is an anion,
- said polymer having associated therewith a source of metal ions.
In an integral photographic assemblage comprising:
- (a) a photosensitive 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 silver halide emulsion layer having a ballasted chelating cyan dye releaser associated therewith, a green-sensitive silver halide emulsion layer having a ballasted chelating magenta dye releaser associated therewith, and a blue-sensitive silver halide emulsion layer having a ballasted chelating yellow dye releaser associated therewith;
- (b) a transparent sheet superposed over said blue-sensitive silver halide emulsion layer and comprising a transparent support having thereon, in sequence, a neutralizing layer and a timing layer;
- and
- (c) a rupturable container containing an alkaline processing composition and an opacifying agent which is so positioned during processing of said assemblage that a compressive force applied to said container will effect a discharge of a container's content between said transparent sheet and said blue-sensitive silver halide emulsion layer;
- said assemblage containing a silver halide developing agent;
- the improvement wherein said dye image-receiving layer contains a water-soluble polymer comprising a recurring unit of the formula:
- ##STR34## wherein:
- L is selected from the group consisting of a single bond and a bivalent linking group;
- Z represents the atoms necessary to complete a heterocyclic nucleus;
- R is selected from the group consisting of a single bond and alkylene;
- R.sup.1 and R.sup.2 are independently chelating groups;
- and
- X.sup.- is an anion,
- said polymer having associated therewith a source of metal ions.
In a process of producing a photographic transfer image in a photographic element comprising a support having thereon at least one imagewise-exposed photosensitive silver halide emulsion layer having associated therewith a chelating dye or chelating dye-forming material and a dye image-receiving layer comprising:
- treating said element with an alkaline processing composition in the presence of a silver halide developing agent to effect development of each of said exposed silver halide emulsion layers;
- (1) an imagewise distribution of dye or dye-forming material being formed as a function of development;
- and
- (2) at least a portion of said imagewise distribution of dye or dye-forming material diffusing to said dye image-receiving layer;
- the improvement wherein said dye image-receiving layer contains a layer comprising a water-soluble polymer comprising a recurring unit of the formula:
- ##STR35## wherein:
- L is selected from the group consisting of a single bond and a bivalent linking group;
- Z represents the atoms necessary to complete a heterocyclic nucleus;
- R is selected from the group consisting of a single bond and alkylene;
- R.sup.1 and R.sup.2 are independently chelating groups;
- and
- X.sup.- is an anion,
- said polymer having associated therewith a source of metal ions.
Dependencies are inferred from the claim text.