GB2016724A - Method of preparing photographic silver halide emulsion grains - Google Patents

Method of preparing photographic silver halide emulsion grains

Info

Publication number
GB2016724A
GB2016724A GB7906844A GB7906844A GB2016724A GB 2016724 A GB2016724 A GB 2016724A GB 7906844 A GB7906844 A GB 7906844A GB 7906844 A GB7906844 A GB 7906844A GB 2016724 A GB2016724 A GB 2016724A
Authority
GB
United Kingdom
Prior art keywords
silver halide
emulsion
dye
improved
halide emulsion
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.)
Granted
Application number
GB7906844A
Other versions
GB2016724B (en
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 GB2016724A publication Critical patent/GB2016724A/en
Application granted granted Critical
Publication of GB2016724B publication Critical patent/GB2016724B/en
Expired 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
    • G03C1/015—Apparatus or processes for the preparation of emulsions
    • 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
    • G03C1/10—Organic substances
    • G03C1/12—Methine and polymethine dyes
    • 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
    • G03C2200/00—Details
    • G03C2200/06—Additive

Landscapes

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

Abstract

In making a photographic silver halide emulsion by mixing aqueous silver salt and halide solutions in the presence of a peptizer, a methine spectral sensitizing dye is introduced into the reaction mixture after the formation of silver halide nuclei but before silver halide grain precipitation has been completed. The emulsion can be further spectrally sensitized with dye added after silver halide precipitation has been completed. Advantages of the method can be improved emulsion speed, improved storage stability, reduced tendency for dye desorption, reduced stain, improved light absorption and the possibility of influencing grain growth to produce grains of chosen crystal habit.
GB7906844A 1978-02-27 1979-02-27 Method of preparing photographic silver halide emulsion grains Expired GB2016724B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88123078A 1978-02-27 1978-02-27

Publications (2)

Publication Number Publication Date
GB2016724A true GB2016724A (en) 1979-09-26
GB2016724B GB2016724B (en) 1982-05-26

Family

ID=25378037

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7906844A Expired GB2016724B (en) 1978-02-27 1979-02-27 Method of preparing photographic silver halide emulsion grains

Country Status (5)

Country Link
BE (1) BE874497A (en)
CA (1) CA1121644A (en)
DE (1) DE2907596A1 (en)
FR (1) FR2418479A1 (en)
GB (1) GB2016724B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4830955A (en) * 1986-04-24 1989-05-16 Konishiroku Photo Industry Co., Ltd. Silver halide photographic light-sensitive material and method of processing thereof utilizing hydroxy azaindene compounds

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735766A (en) * 1952-05-15 1956-02-21 Prevention of dye wandering in
GB1225241A (en) * 1967-04-21 1971-03-17
IT996288B (en) * 1972-12-04 1975-12-10 Polaroid Corp PROCEDURE FOR FORMING SILVER HALIDE CRYSTALS FOR PHOTO EMU SIONS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4830955A (en) * 1986-04-24 1989-05-16 Konishiroku Photo Industry Co., Ltd. Silver halide photographic light-sensitive material and method of processing thereof utilizing hydroxy azaindene compounds

Also Published As

Publication number Publication date
DE2907596A1 (en) 1979-09-06
FR2418479B1 (en) 1982-06-04
GB2016724B (en) 1982-05-26
BE874497A (en) 1979-08-27
CA1121644A (en) 1982-04-13
FR2418479A1 (en) 1979-09-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970227