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US 6,790,600 B2Granted
Method of color photographic processing for color photographic papers
AssigneeEastman Kodak Company
InventorsPaul A. Schwartz, Valerie L. Kuykendall, Eric R. Schmittou, Leif P. Olson, Susan M. Flavin
Life of this patent
Estimating the term…
Abstract
A method of processing photographic color papers is carried out using a photographic bleach-fixing composition in a bleach-fixing step that is carried out for less than 60 seconds. The bleach-fixing composition comprises certain aliphatic or aromatic sulfur-containing compounds that include a —N═C(SH)—group. The bleach-fixing composition can be prepared from a two-part bleach-fixing kit having two solutions that can be added directly to a processing chamber or premixed to form a replenisher solution.
Claims19
A method of providing a color photographic image comprising contacting a color developed photographic color paper in a processing chamber with a photographic bleach-fixing composition that has a pH of from about 3.5 to about 8 and comprises:
- from about 0.02 to about 2 mol/l of a ferric-ligand photographic bleaching agent,
- from about 0.1 to about 5 mol/l of a photographic fixing agent that is a thiosulfate, thiocyanate, or a mixture thereof, and
- from about 0.01 to about 100 mmol/l of a sulfur-containing compound represented by one or more of the following Structures I, II, III, IVa, IVb, and V:
- wherein Q1 represents a group of atoms that are necessary to complete a substituted or unsubstituted nitrogen-containing heterocyclic ring, and R1 represents hydrogen, or an alkyl, cycloalkyl, aryl, heterocyclic, or amino group,
- wherein Q2 represents a group of atoms that are necessary to complete a substituted or unsubstituted nitrogen-containing heterocyclic ring, and R2
- represents hydrogen, an alkali metal atom, a group wherein Q3 is defined the same as Q2, or an alkyl group,
- wherein R3 and R4 are independently alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, aryl, or heterocyclic groups, or R4 can be hydrogen, and Y is —O—, —S—, or —N(R5)— wherein R5 is an alkyl, cycloalkyl, alkenyl, alkynyl, aryl, heterocyclic, amino, acylamino, sulfonamido, ureido, or sulfamoylamino group, or R3 and R4, or R4 and R5, taken together, independently, may form a heterocyclic ring,
- wherein R6, R7, and R8 independently represent hydrogen, alkali metal ions, or alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, aryl, heterocyclic, amino, acylamino, ureido, or sulfamoylamino groups, and
- wherein R9, R10, R11 and R12 independently represent hydrogen, alkali metal ions, or alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, aryl, heterocyclic, amino, acylamino, ureido, or sulfamoylamino groups, and R13 represents an alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, aryl, heterocyclic, amino, acylamino, ureido, or sulfamoylamino group,
- said bleach-fixing composition provided by delivery to said processing chamber of Solutions A and B, wherein Solution A comprises from about 0.5 to about 6 mol/l of said photographic fixing agent, and Solution B comprises from about 0.1 to about 3 mol/l of said ferric-ligand photographic bleaching agent, and either or both of said Solutions A and B comprise from about 0.05 to about 500 mmol/l of said sulfur-containing compound defined by Structures I, II, II, IVa, IVb, or V above, Solutions A and B being delivered to said processing chamber at a volume ratio of from about 4:1 to about 0.5:1 (A:B), and
- said contacting being carried out for from about 10 to about 60 seconds.
8 more elements
A method of providing a color photographic image comprising contacting a color developed photographic color paper in a processing chamber with a photographic bleach-fixing composition that has a pH of from about 3.5 to about 8 and comprises:
- from about 0.02 to about 2 mol/l of a ferric-ligand photographic bleaching agent,
- from about 0.1 to about 5 mol/l of a photographic fixing agent that is a thiosulfate, thiocyanate, or a mixture thereof, and
- from about 0.01 to about 100 mmol/l of a sulfur-containing compound represented by one or more of the following Structures I, II, III, IVa, IVb, and V:
- wherein Q1 represents a group of atoms that are necessary to complete a nitrogen-containing heterocyclic ring, and R1 represents hydrogen, or an alkyl, cycloalkyl, aryl, heterocyclic, or amino group,
- wherein Q2 represents a group of atoms that are necessary to complete a nitrogen-containing heterocyclic ring, and R2 represents hydrogen, an alkali metal atom, a
- group wherein Q3 is defined the same as Q2, or an alkyl group,
- wherein R3 and R4 are independently alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, aryl, or heterocyclic groups, or R4 can be hydrogen, and Y is —O—, —S—, or —N(R5)— wherein R5 is an alkyl, cycloalkyl, alkenyl, alkynyl, aryl, heterocyclic, amino, acylamino, sulfonamido, ureido, or sulfamoylamino group, or R3 and R4, or R4 and R5, taken together, independently, may form a heterocyclic ring,
- wherein R6, R7, and R8 independently represent hydrogen, alkali metal ions, or alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, aryl, heterocyclic, amino, acylamino, ureido, or sulfamoylamino groups, and
- wherein R9, R10, R11 and R12 independently represent hydrogen, alkali metal ions, or alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, aryl, heterocyclic, amino, acylamino, ureido, or sulfamoylamino groups, and R13 represents an alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, aryl, heterocyclic, amino, acylamino, ureido, or sulfamoylamino group,
- said bleach-fixing composition provided by delivery to said processing chamber of a bleach-fixing replenisher at a rate of from about 5.4 to about 215 ml/m2,
- said bleach-fixing replenisher provided by mixing individual Solutions A and B, wherein Solution A comprises from about 0.5 to about 6 mol/l of said photographic fixing agent, and Solution B comprises from about 0.1 to about 3 mol/l of said ferric-ligand photographic bleaching agent, and either or both of Solutions A and B comprise from about 0.05 to about 500 mmol/l of said sulfur-containing compound, said Solution A being mixed with said Solution B at a volume ratio of from about 4:1 to about 0.5:1 (A:B), and
- said contacting being carried out for from about 10 to about 60 seconds.
9 more elements
A method for providing a color photographic image comprising:
- A) color developing an imagewise exposed photographic color paper using a color developing composition, said photographic color paper comprising a silver halide emulsion comprising at least 0.3 mol % silver iodide based on total silver halide in said emulsion, a polyalkylene oxide compound, or a mercaptotetrazole,
- B) bleach-fixing said color developed photographic color paper in a processing chamber with a photographic bleach-fixing composition having a pH of from about 5.5 to about 7.5 and that comprises:
- from about 0.05 to about 0.3 mol/l of an iron complex of ethylenediaminetetraacetic acid, ethylenediaminedisuccinic acid, or 1,3-propylenediaminetetraacetic acid as a ferric-ligand photographic bleaching agent,
- from about 0.2 to about 2 mol/l of thiosulfate photographic fixing agent, and
- from about 0.04 to about 1 mmol/l of one or more of the following compounds (I) through (XIV):
- said photographic bleach-fixing composition provided by delivery of a photographic bleach-fixing replenisher to said processing chamber at a rate of 5.4 to about 215 ml/m2,
- wherein said photographic bleach-fixing replenisher comprises from about 0.05 to about 1.2 mol/l of an iron complex of ethylenediaminetetraacetic acid, ethylenediaminedisuccinic acid, or 1,3-propylenediaminetetraacetic acid as a ferric-ligand photographic bleaching agent, from about 0.2 to about 4 mol/l of thiosulfate photographic fixing agent, and from about 0.04 to about 4 mmol/l of one or more of the compounds (I) through (XIV):
- said photographic bleach-fixing replenisher being provided by mixing individual Solutions A and B, wherein Solution A comprises from about 1 to about 5 mol/l of said thiosulfate photographic fixing agent, and Solution B comprises from about 0.5 to about 2 mol/l of said ferric-ligand photographic bleaching agent, and either or both of Solutions A and B comprise from about 0.2 to about 5 mmol/l of said one or more of Compounds (I) through (XIV) noted above, said Solution A being mixed with said Solution B at a volume ratio of from about 1:1 to about 3:1 (A:B), and mixed with water at a volume ratio of from about 1:0 to about 1:10 (A:water), and
- said bleach-fixing being carried out for from about 18 to about 35 seconds, and
- C) contacting said photographic color paper with a stabilizing or rinsing solution.
7 more elements
Dependencies are inferred from the claim text.