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EP0226184A3 - Nucleation development control agent for photographic silver halide materials and processes - Google Patents

Nucleation development control agent for photographic silver halide materials and processes

Info

Publication number
EP0226184A3
EP0226184A3 EP86117268A EP86117268A EP0226184A3 EP 0226184 A3 EP0226184 A3 EP 0226184A3 EP 86117268 A EP86117268 A EP 86117268A EP 86117268 A EP86117268 A EP 86117268A EP 0226184 A3 EP0226184 A3 EP 0226184A3
Authority
EP
European Patent Office
Prior art keywords
silver halide
control agent
nucleation
development control
development
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86117268A
Other languages
German (de)
French (fr)
Other versions
EP0226184A2 (en
Inventor
Ismael Aldolfoµc/o EASTMAN KODAK COMPANY Olivares
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of EP0226184A2 publication Critical patent/EP0226184A2/en
Publication of EP0226184A3 publication Critical patent/EP0226184A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/09—Noble metals or mercury; Salts or compounds thereof; Sulfur, selenium or tellurium, or compounds thereof, e.g. for chemical sensitising
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/061—Hydrazine compounds

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

A nucleation development control agent that is an iso­ thiuronium compound or a free mercaptan aids nucleation development in a negative working photographic silver halide material comprising a nucleating agent. The nuclea­ tion development control agent helps increase image dis­ crimination and helps reduce image development spread beyond unexposed grains in close proximity to exposed silver halide grains. The nucleation development control agent can be in this photographic material and or in an aqu­ eous silver halide developer solution for use in nucleation development of the imagewise exposed photographic mat­ erial.
EP86117268A 1985-12-19 1986-12-11 Nucleation development control agent for photographic silver halide materials and processes Withdrawn EP0226184A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US81103385A 1985-12-19 1985-12-19
US811033 1985-12-19

Publications (2)

Publication Number Publication Date
EP0226184A2 EP0226184A2 (en) 1987-06-24
EP0226184A3 true EP0226184A3 (en) 1988-11-09

Family

ID=25205358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86117268A Withdrawn EP0226184A3 (en) 1985-12-19 1986-12-11 Nucleation development control agent for photographic silver halide materials and processes

Country Status (2)

Country Link
EP (1) EP0226184A3 (en)
JP (1) JPS62157025A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8803281D0 (en) * 1988-02-12 1988-03-09 Ciba Geigy Ag Development accelerators
GB8911431D0 (en) * 1989-05-18 1989-07-05 Kodak Ltd Tone controlling compounds
US5126227A (en) * 1990-10-17 1992-06-30 Eastman Kodak Company High contrast photographic elements containing ballasted hydrophobic isothioureas
IT1251792B (en) * 1991-07-15 1995-05-26 Minnesota Mining & Mfg SILVER HALIDE EMULSION INCLUDING GRANULES WITH CRATER OR HOPPER STRUCTURE AND METHOD FOR ITS PREPARATION.
US5232818A (en) * 1991-07-25 1993-08-03 Eastman Kodak Company Nucleated high contrast photographic elements containing thioether compounds to inhibit pepper fog and restrain image spread
US5196292A (en) * 1991-10-17 1993-03-23 Eastman Kodak Company Nucleated high contrast photographic elements containing ballasted thioether isothioureas to inhibit pepper fog and restrain image spread

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2634666A1 (en) * 1975-08-02 1977-02-17 Konishiroku Photo Ind LIGHT SENSITIVE PHOTOGRAPHIC SILVER HALOGENIDE RECORDING MATERIAL FOR BLACK / WHITE PHOTOGRAPHY AND PROCESS FOR THE PRODUCTION OF HIGHLY CONTRAST SILVER IMAGES USING THE RELEVANT RECORDING MATERIAL
DE3203661A1 (en) * 1981-02-03 1982-09-16 Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa METHOD FOR FORMING A PHOTOGRAPHIC IMAGE
EP0032456B1 (en) * 1980-01-14 1983-02-02 EASTMAN KODAK COMPANY (a New Jersey corporation) Method for high contrast development of photographic elements

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2634666A1 (en) * 1975-08-02 1977-02-17 Konishiroku Photo Ind LIGHT SENSITIVE PHOTOGRAPHIC SILVER HALOGENIDE RECORDING MATERIAL FOR BLACK / WHITE PHOTOGRAPHY AND PROCESS FOR THE PRODUCTION OF HIGHLY CONTRAST SILVER IMAGES USING THE RELEVANT RECORDING MATERIAL
EP0032456B1 (en) * 1980-01-14 1983-02-02 EASTMAN KODAK COMPANY (a New Jersey corporation) Method for high contrast development of photographic elements
DE3203661A1 (en) * 1981-02-03 1982-09-16 Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa METHOD FOR FORMING A PHOTOGRAPHIC IMAGE

Also Published As

Publication number Publication date
EP0226184A2 (en) 1987-06-24
JPS62157025A (en) 1987-07-13

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Legal Events

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Inventor name: OLIVARES, ISMAEL ALDOLFO?§C/O EASTMAN KODAK COMPAN