GB722231A - Improvements in mixed grain photographic emulsions - Google Patents

Improvements in mixed grain photographic emulsions

Info

Publication number
GB722231A
GB722231A GB22466/52A GB2246652A GB722231A GB 722231 A GB722231 A GB 722231A GB 22466/52 A GB22466/52 A GB 22466/52A GB 2246652 A GB2246652 A GB 2246652A GB 722231 A GB722231 A GB 722231A
Authority
GB
United Kingdom
Prior art keywords
per cent
added
emulsions
silver chloride
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.)
Expired
Application number
GB22466/52A
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 GB722231A publication Critical patent/GB722231A/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
    • G03C1/10—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
    • 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
    • G03C1/102—Organic substances dyes other than methine dyes

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)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
GB22466/52A 1951-10-17 1952-09-08 Improvements in mixed grain photographic emulsions Expired GB722231A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US251833A US2673149A (en) 1951-10-17 1951-10-17 Quaternary salts in mixed grain photographic emulsions

Publications (1)

Publication Number Publication Date
GB722231A true GB722231A (en) 1955-01-19

Family

ID=22953606

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22466/52A Expired GB722231A (en) 1951-10-17 1952-09-08 Improvements in mixed grain photographic emulsions

Country Status (5)

Country Link
US (1) US2673149A (xx)
BE (1) BE514795A (xx)
DE (1) DE971466C (xx)
FR (1) FR1099927A (xx)
GB (1) GB722231A (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971466C (de) * 1951-10-17 1959-01-29 Eastman Kodak Co Verfahren zur Verhinderung der Diffusion von Sensibilisatoren in gemischtkoernigen Emulsionen

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3062645A (en) * 1957-11-27 1962-11-06 Eastman Kodak Co Sensitization of photographic emulsions to be developed with p-phenylenediamine developing agents
US3502467A (en) * 1967-12-12 1970-03-24 Eastman Kodak Co High temperature processing in dyedeveloper diffusion transfer systems
US4351898A (en) * 1978-01-03 1982-09-28 Goldberg Richard J Mixed grain single emulsion layer photographic material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB587434A (en) * 1939-12-20 1947-04-25 Gevaert Photo Prod Nv Improvements in and relating to the preparation of heterocyclic nitrogen compounds
BE463680A (xx) * 1940-02-29
BE491769A (xx) * 1948-10-30
BE514795A (xx) * 1951-10-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971466C (de) * 1951-10-17 1959-01-29 Eastman Kodak Co Verfahren zur Verhinderung der Diffusion von Sensibilisatoren in gemischtkoernigen Emulsionen

Also Published As

Publication number Publication date
BE514795A (xx)
FR1099927A (fr) 1955-09-14
US2673149A (en) 1954-03-23
DE971466C (de) 1959-01-29

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