← Back to Patent Explorer
US3846130A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for developing photographic elements

Assignee: Eastman Kodak Co
•
Filing: 1973-05-21
•
Granted: 1974-11-05
•
Expires: 1993-05-21
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract 1. IN A PROCESS OF DEVELOPING AN IMAGEWISE-EXPOSED PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND AT LEAST ONE IMAGE DYE-PROVIDING LAYER UNIT THEREON WHICH CONTAINS A LIGHT-SENSITIVE SILVER HALIDE EMULSION HAVING ASSOCIATED THEREWITH A COLOR COUPLER, WHICH PROCESS INCLUDES (1) DEVELOPMENT OF THE IMAGEWISE-EXPOSED SILVER HALIDE EMULSION TO PROVIDE AN IMAGEWISE DISTRIBUTION OF METALLIC SILVER AND INBIBITION OF A COLOR-DEVELOPING AGENT IN SAID PHOTOGRAPHIC ELEMENT, AND THEN (2) CONTACTING SAID PHOTOGRAPHIC ELEMENT WITH AN AMPLIFIER COMPOSITION WHICH REPRESSURES SUBSTANTIALLY ADITIONAL NET SILVER DEVELOPMENT, SAID AMPLIFIER SOLUTION CONTAINING A COBALT(III) METAL COMPLEX HAVING A CORDINATION NUMBER OF 6, AND SAID AMPLIFIER SOLUTION BEING MMAINTAINED IN CONTACT WITH SAID PHOTOGRAPHIC ELEMENT UNDER CONDITIONS WHICH REDUCE SAID COBALT (III) TO COBALT (II) AND IN TURN OIDIZE SAID COLORDEVELOPING AGENT TO PROVIDE AN INCREASE IN DYE DENSITY WITH DYE PRODUCED FROM SAID COUPLER IN THE AREAS CORRESPONDING TO THE IMAGEWISE DISTRIBUTION OF SAID METALLIC SILER, THE IMPROVEMENT COMPRISING INCLUDING IN SAID AMPLIFIER COMPOSITION AN FE(III) CHELATE OF AN AMINOCARBOXYLIC ACID.

Inventors

  • 👤 M Purol
  • 👤 R Malloy

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 18:07
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3017; G03C7/3018; Y; Y10; Y10S; Y10S430/00; Y10S430/137

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 164 words
IN A PROCESS OF DEVELOPING AN IMAGEWISE-EXPOSED PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND AT LEAST ONE IMAGE DYE-PROVIDING LAYER UNIT THEREON WHICH CONTAINS A LIGHT-SENSITIVE SILVER HALIDE EMULSION HAVING ASSOCIATED THEREWITH A COLOR COUPLER, WHICH PROCESS INCLUDES (1) DEVELOPMENT OF THE IMAGEWISE-EXPOSED SILVER HALIDE EMULSION TO PROVIDE AN IMAGEWISE DISTRIBUTION OF METALLIC SILVER AND INBIBITION OF A COLOR-DEVELOPING AGENT IN SAID PHOTOGRAPHIC ELEMENT, AND THEN (2) CONTACTING SAID PHOTOGRAPHIC ELEMENT WITH AN AMPLIFIER COMPOSITION WHICH REPRESSURES SUBSTANTIALLY ADITIONAL NET SILVER DEVELOPMENT, SAID AMPLIFIER SOLUTION CONTAINING A COBALT(III) METAL COMPLEX HAVING A CORDINATION NUMBER OF 6, AND SAID AMPLIFIER SOLUTION BEING MMAINTAINED IN CONTACT WITH SAID PHOTOGRAPHIC ELEMENT UNDER CONDITIONS WHICH REDUCE SAID COBALT (III) TO COBALT (II) AND IN TURN OIDIZE SAID COLORDEVELOPING AGENT TO PROVIDE AN INCREASE IN DYE DENSITY WITH DYE PRODUCED FROM SAID COUPLER IN THE AREAS CORRESPONDING TO THE IMAGEWISE DISTRIBUTION OF SAID METALLIC SILER, THE IMPROVEMENT COMPRISING INCLUDING IN SAID AMPLIFIER COMPOSITION AN FE(III) CHELATE OF AN AMINOCARBOXYLIC ACID.
Claim 2
Dependent Claim 164 words
IN A PROCESS OF DEVELOPING AN IMAGEWISE-EXPOSED PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT AND AT LEAST ONE IMAGE DYE-PROVIDING LAYER UNIT THEREON WHICH CONTAINS A LIGHT-SENSITIVE SILVER HALIDE EMULSION HAVING ASSOCIATED THEREWITH A COLOR COUPLER, WHICH PROCESS INCLUDES (1) DEVELOPMENT OF THE IMAGEWISE-EXPOSED SILVER HALIDE EMULSION TO PROVIDE AN IMAGEWISE DISTRIBUTION OF METALLIC SILVER AND INBIBITION OF A COLOR-DEVELOPING AGENT IN SAID PHOTOGRAPHIC ELEMENT, AND THEN (2) CONTACTING SAID PHOTOGRAPHIC ELEMENT WITH AN AMPLIFIER COMPOSITION WHICH REPRESSURES SUBSTANTIALLY ADITIONAL NET SILVER DEVELOPMENT, SAID AMPLIFIER SOLUTION CONTAINING A COBALT(III) METAL COMPLEX HAVING A CORDINATION NUMBER OF 6, AND SAID AMPLIFIER SOLUTION BEING MMAINTAINED IN CONTACT WITH SAID PHOTOGRAPHIC ELEMENT UNDER CONDITIONS WHICH REDUCE SAID COBALT (III) TO COBALT (II) AND IN TURN OIDIZE SAID COLORDEVELOPING AGENT TO PROVIDE AN INCREASE IN DYE DENSITY WITH DYE PRODUCED FROM SAID COUPLER IN THE AREAS CORRESPONDING TO THE IMAGEWISE DISTRIBUTION OF SAID METALLIC SILER, THE IMPROVEMENT COMPRISING INCLUDING IN SAID AMPLIFIER COMPOSITION AN FE(III) CHELATE OF AN AMINOCARBOXYLIC ACID.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-11-04 1978-05-06 1978-11-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-11-04 1982-05-06 1982-11-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-11-04 1986-05-06 1986-11-05 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag