GB636140A - Improvements in photographic emulsions - Google Patents

Improvements in photographic emulsions

Info

Publication number
GB636140A
GB636140A GB22119/47A GB2211947A GB636140A GB 636140 A GB636140 A GB 636140A GB 22119/47 A GB22119/47 A GB 22119/47A GB 2211947 A GB2211947 A GB 2211947A GB 636140 A GB636140 A GB 636140A
Authority
GB
United Kingdom
Prior art keywords
emulsion
auric
chloride
addition
gold compound
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
GB22119/47A
Other languages
English (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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB636140A publication Critical patent/GB636140A/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)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
GB22119/47A 1939-11-17 1947-08-08 Improvements in photographic emulsions Expired GB636140A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US254261XA 1939-11-17 1939-11-17

Publications (1)

Publication Number Publication Date
GB636140A true GB636140A (en) 1950-04-26

Family

ID=21825979

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22119/47A Expired GB636140A (en) 1939-11-17 1947-08-08 Improvements in photographic emulsions

Country Status (4)

Country Link
BE (1) BE474235A (pt)
CH (1) CH254261A (pt)
FR (1) FR956651A (pt)
GB (1) GB636140A (pt)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073652A (en) * 1974-09-30 1978-02-14 Agfa-Gevaert N.V. Direct-positive silver halide emulsions
GB2309093A (en) * 1996-01-11 1997-07-16 Eastman Kodak Co Preparing silver halide emulsions using a double heat cycle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073652A (en) * 1974-09-30 1978-02-14 Agfa-Gevaert N.V. Direct-positive silver halide emulsions
GB2309093A (en) * 1996-01-11 1997-07-16 Eastman Kodak Co Preparing silver halide emulsions using a double heat cycle

Also Published As

Publication number Publication date
FR956651A (pt) 1950-02-02
BE474235A (pt)
CH254261A (fr) 1948-04-30

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