GB1204623A - Photographic silver halide emulsions - Google Patents

Photographic silver halide emulsions

Info

Publication number
GB1204623A
GB1204623A GB869368A GB869368A GB1204623A GB 1204623 A GB1204623 A GB 1204623A GB 869368 A GB869368 A GB 869368A GB 869368 A GB869368 A GB 869368A GB 1204623 A GB1204623 A GB 1204623A
Authority
GB
United Kingdom
Prior art keywords
silver halide
halide emulsions
photographic silver
feb
emulsions
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.)
Expired
Application number
GB869368A
Inventor
Chester Ridlon Berry
David Corwin Skillman
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 GB1204623A publication Critical patent/GB1204623A/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
    • G03C1/06—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

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)
  • Plural Heterocyclic Compounds (AREA)

Abstract

1,204,623. Silver halide emulsions. EASTMAN KODAK CO. Feb.22, 1968 [Feb.23, 1967], No.8693/68. Heading G2C. Extremely fine grain emulsions having a grain size below 50 mÁ are prepared by precipitating silver halide grains in an aqueous medium in which is dissolved a heterocyclic mercaptan as a grain growth restrainer. Preferred mercaptans are those of tetra-, tri-, di and mon-azoles, particularly 3, 5-dicarboxy-1-phenyl-5-mercaptotetrazole.
GB869368A 1967-02-23 1968-02-22 Photographic silver halide emulsions Expired GB1204623A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61781167A 1967-02-23 1967-02-23

Publications (1)

Publication Number Publication Date
GB1204623A true GB1204623A (en) 1970-09-09

Family

ID=24475163

Family Applications (1)

Application Number Title Priority Date Filing Date
GB869368A Expired GB1204623A (en) 1967-02-23 1968-02-22 Photographic silver halide emulsions

Country Status (4)

Country Link
BE (1) BE710602A (en)
CH (1) CH479088A (en)
FR (1) FR1553483A (en)
GB (1) GB1204623A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2254357A1 (en) * 1971-11-10 1973-05-17 Agfa Gevaert Ag FINE-GRAIN SILVER HALOGENIDE EMULSIONS OF THE LIPPMANN TYPE
EP0243168A2 (en) 1986-04-22 1987-10-28 Konica Corporation Method for processing silver halide photo-sensitive material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2254357A1 (en) * 1971-11-10 1973-05-17 Agfa Gevaert Ag FINE-GRAIN SILVER HALOGENIDE EMULSIONS OF THE LIPPMANN TYPE
EP0243168A2 (en) 1986-04-22 1987-10-28 Konica Corporation Method for processing silver halide photo-sensitive material

Also Published As

Publication number Publication date
BE710602A (en) 1968-06-17
FR1553483A (en) 1969-01-10
CH479088A (en) 1969-09-30

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Legal Events

Date Code Title Description
PS Patent sealed
434A Offer to surrender (sect. 34/1949)
4333 Proceeding terminated by surrender of patent under section 34 patents act 1949
434I Order made revoking the undermentioned patent (sect. 34/1949)