GB1009475A - Photographic silver halide emulsions of increased sensitivity - Google Patents

Photographic silver halide emulsions of increased sensitivity

Info

Publication number
GB1009475A
GB1009475A GB31254/62A GB3125462A GB1009475A GB 1009475 A GB1009475 A GB 1009475A GB 31254/62 A GB31254/62 A GB 31254/62A GB 3125462 A GB3125462 A GB 3125462A GB 1009475 A GB1009475 A GB 1009475A
Authority
GB
United Kingdom
Prior art keywords
perchlorate
silver halide
hydrozinium
bis
hydroquinone
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
GB31254/62A
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.)
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 GB1009475A publication Critical patent/GB1009475A/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
    • 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
    • G03C1/42—Developers or their precursors

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)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
GB31254/62A 1961-08-17 1962-08-15 Photographic silver halide emulsions of increased sensitivity Expired GB1009475A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US132012A US3212899A (en) 1961-08-17 1961-08-17 Photographic silver halide emulsions sensitized with quaternary ammonium salt and developer combinations

Publications (1)

Publication Number Publication Date
GB1009475A true GB1009475A (en) 1965-11-10

Family

ID=22452028

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31254/62A Expired GB1009475A (en) 1961-08-17 1962-08-15 Photographic silver halide emulsions of increased sensitivity

Country Status (4)

Country Link
US (1) US3212899A (ja)
BE (1) BE621461A (ja)
DE (1) DE1163672B (ja)
GB (1) GB1009475A (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1548395A (en) * 1975-05-29 1979-07-11 Eastman Kodak Co Photographic materials
US5384232A (en) * 1991-12-02 1995-01-24 E. I. Du Pont De Nemours And Company Process for rapid access development of silver halide films using pyridinium as development accelerators
US5252449A (en) * 1992-09-25 1993-10-12 E. I. Du Pont De Nemours And Company Photographic silver halide emulsions with improved bright room tolerance
FR2747806B1 (fr) * 1996-04-19 1998-07-03 Kodak Pathe Nouveau procede de developpement d'un produit photographique a developpateur incorpore

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419975A (en) * 1943-08-26 1947-05-06 Eastman Kodak Co Increasing speed and contrast of photographic emulsions
GB845928A (en) * 1957-10-25 1960-08-24 Ilford Ltd Improvements in or relating to photographic emulsions
US2940851A (en) * 1957-11-27 1960-06-14 Eastman Kodak Co Sensitization of photographic emulsions
BE577256A (ja) * 1958-03-31

Also Published As

Publication number Publication date
BE621461A (ja)
DE1163672B (de) 1964-02-20
US3212899A (en) 1965-10-19

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