Photographic blixes and blixing

Claim 2

blixing the developed photographic element by contacting it with a blix solution to remove said silver image and residual silver halide in said element to leave said dye image unobstructed, the improvement comprising blixing said developed element by contacting it with an aqueous photographic blix solution comprising: a. a bleaching agent for silver that is a salt with an unchelated cation selected from the class consisting of an ammonium ion and a water-soluble organic amine having an ionizable proton attached to a nitrogen atom in said amine, and with an anion that is a complex of a metal selected from the class consisting of Fe , Co , and Cu , chelated by a polyfunctional ligand; b. a thiosulfate fixing agent having a cation selected from the class consisting of an ammonium ion and a water-soluble organic amine having an ionizable proton attached to a nitrogen atom in said amine; c. a salt with a cation selected from the class consisting of an ammonium ion and a water-soluble organic amine having an ionizable proton attached to a nitrogen atom in said amine and with an anion that provides a source of sulfite ions.

Claim 3

blixing the developed photographic element by contacting it with a blix solution to remove said silver image and residual silver halide in said element to leave said dye image unobstructed, the improvement comprising blixing said developed element by contacting it with an aqueous photographic blix solution comprising: a. ammonium ethylenedinitrilotetraacetato ferrate (III) at a concentration in the range of from about 0.01 mole per liter to about 1.0 mole per liter of said blix solution, b. ammonium thiosulfate at a concentration in the range of from about 0.01 mole per liter to about 5.0 moles per liter of said blix solution, c. ammonium sulfite at a concentration in the range of from about 0.001 mole per liter to about 1.0 mole per liter of said blix solution, d. ethylenedinitrilotetraacetate tetraammonium salt at a concentration in the range of from about 0.001 mole per liter to about 0.1 mole per liter of said blix solution, and e. sufficient ammonium hydroxide to adjust the pH of said blix solution in the range of from about 5 to about 7.

Claim 4

A photographic blix composition comprising: a. a bleaching agent for silver that is a salt with an unchelated cation selected from the class consisting of an ammonium ion and a water-soluble organic amine having an ionizable proton attached to a nitrogen atom in said amine, and with an anion that is a complex of a metal selected from the class consisting of Fe , Co and Cu , chelated by a polyfunctional ligand selected from those having the formulas:

Claim 5

A photographic blix composition comprising: a. a bleaching agent for silver that is a salt with an unchelated cation selected from the class consisting of an ammonium ion and a water-soluble organic amine having an ionizable proton attached to a nitrogen atom in said amine, and with an anion that is a complex of a metal selected from the class consisting of Fe , Co and Cu , chelated by a polyfunctional ligand selected from those having the formulas:

Claim 6

A blix composition of claim 2 containing in addition to (a), (b) and (c) described therein, d. a salt having a cation selected from the class consisting of an ammonium ion and a water-soluble organic amine having an ionizable proton attached to a nitrogen atom of said amine and an anion from said polyfunctional ligand described in (a).

Claim 7

A blix composition of claim 1 in which the polyfunctional ligand is ethylenediaminetetraacetic acid.

Claim 8

A blix composition of claim 1 in which the polyfunctional ligand is diethylenetrinitrilopentaacetic acid.

Claim 9

A blix composition of claim 1 in which the polyfunctional ligand is 1,2-cyclohexanediaminetetraacetic acid.

Claim 10

A photographic blix composition comprising: a. sufficient ammonium ethylenedinitrilotetraacetato ferrate (III) to produce, when dissolved in water, a solution containing from about 0.01 mole per liter to about 1.0 mole per liter, b. sufficient ammonium thiosulfate to produce, when dissolved in water, a solution containing from about 0.01 mole per liter to about 5.0 moles per liter, and c. sufficient ammonium sulfite to produce, when dissolved in water, a solution containing from about 0.001 mole per liter to about 2.0 moles per liter.

Claim 11

A blix composition of claim 9 containing, in addition to (a), (b) and (c), sufficient ethylenedinItrilotetraacetate tetraammonium salt to produce, when dissolved in water, a solution containing from about 0.001 mole per liter to about 0.1 mole per liter and sufficient ammonium hydroxide to produce a blix solution having a pH in the range from about 5 to about 7.

Claim 12

A photographic blix composition comprising: a. sufficient ammonium ethylenedinitrilotetraacetato cobaltate (III) to produce, when dissolved in water, a solution containing from about 0.01 mole per liter to about 1.0 moles per liter, b. sufficient ammonium thiosulfate to produce, when dissolved in water, a solution containing from about 0.01 mole per liter to about 5.0 moles per liter, and c. sufficient ammonium sulfite to produce, when dissolved in water, a solution containing from about 0.00l mole per liter to about 2.0 moles per liter.

Claim 13

A photographic blix composition comprising: a. sufficient ammonium ethylenedinitrilotetraacetato cuprate (II) to produce, when dissolved in water, a solution containing from about 0.01 mole per liter to about 1.0 mole per liter, b. sufficient ammonium thiosulfate to produce, when dissolved in water, a solution containing from about 0.01 mole per liter to about 5.0 moles per liter, and c. sufficient ammonium sulfite to produce, when dissolved in water, a solution containing from about 0.001 mole per liter to about 2.0 moles per liter.

Claim 14

A photographic blix composition comprising: a. sufficient tris (hydroxyethyl) ammonium ethylenedinitrilotetraaceto ferrate (III) to produce, when dissolved in water, a solution containing from about 0.01 mole per liter to about 1.0 mole per liter, b. sufficient ammonium thiosulfate to produce, when dissolved in water, a solution containing from about 0.01 mole per liter to about 5.0 moles per liter, and c. sufficient ammonium sulfite to produce, when dissolved in water, a solution containing from about 0.001 mole per liter to about 2.0 moles per liter.

Claim 15

A photographic blix composition comprising: a. sufficient ammonium diethylenetrinitrilopentaacetato ferrate (III) to produce, when dissolved in water, a solution containing from about 0.01 mole per liter to about 1.0 mole per liter, b. sufficient ammonium thiosulfate to produce, when dissolved in water, a solution containing from about 0.01 mole per liter to about 5.0 moles per liter, and c. sufficient ammonium sulfite to produce, when dissolved in water, a solution containing from about 0.001 mole per liter to about 2.0 moles per liter.

Claim 16

A composition comprising: a. a bleaching agent for silver that is a salt with an unchelated cation selected from the class consisting of an ammonium ion and a water-soluble organic amine having an ionizable proton attached to a nitrogen atom in said amine, and with an anion that is a complex of a metal selected from the class consisting of Fe , Co and Cu , chelated by a polyfunctional ligand; b. a salt with a cation selected from the class consisting of an ammonium ion and a water-soluble organic amine having an ionizable proton attached to a nitrogen atom of said organic amine, and with an anion from said polyfunctional ligand; and c. a base selected from the class consisting of ammonium hydroxide and a water-soluble amine; said composition containing a sufficient amount of (a) and (b) to produce, when dissolved in water, a concentrated stock solution containing from about 0.3 mole per liter to about 2 moles per liter of (a), and from about 0.05 per liter to about 0.5 mole per liter of (b) and a sufficient amount of (c) to adjust the pH of the said concentrated stock solution in the range of from about 6.5 to about 8.5, said concentrated stock solution being added to a solution containing ammonium thioSulfate to form a solution for blixing silver in developed photographic elements.

Claim 17

A composition comprising: a. a bleaching agent for silver that is a salt with an unchelated cation selected from the class consisting of an ammonium ion and a water-soluble organic amine having an ionizable proton attached to a nitrogen atom in said amine, and with an anion that is a complex of a metal selected from the class consisting of Fe , Co and Cu , chelated by a polyfunctional ligand selected from those having the formulas:

Claim 18

A composition of claim 15 in which said cations in said salts of (a) and (b) are ammonium ions and the base of said (c) is ammonium hydroxide.

Claim 19

A composition of claim 15 in which said metal ion in (a) is Fe .

Claim 20

A composition of claim 15 in which said polyfunctional ligand in (a) is ethylenediamine tetraacetic acid.

Claim 21

A composition comprising: a. a sufficient amount of ammonium ethylenedinitrilotetraacetato ferrate (III) to produce, when dissolved in water, a concentrated stock solution containing from about 0.3 mole per liter to about 2. moles of (a) per liter; b. a sufficient amount of ethylenedinitrilotetraacetic acid tetra ammonium salt to produce, when dissolved in water, a concentrated stock solution containing from about 0.05 mole per liter to about 0.5 mole of (b) per liter; and c. a sufficient amount of ammonium hydroxide to adjust the pH of said concentrated stock solution in the range of from about 6.5 to about 10.; said concentrated stock solution being added to a solution containing ammonium thiosulfate to form a solution for blixing silver in developed photographic elements.

Claim 22

In a photographic color process comprising the steps:

Claim 23

In a photographic color process comprising the steps: