GB1048057A - Photographic materials - Google Patents

Photographic materials

Info

Publication number
GB1048057A
GB1048057A GB48170/64A GB4817064A GB1048057A GB 1048057 A GB1048057 A GB 1048057A GB 48170/64 A GB48170/64 A GB 48170/64A GB 4817064 A GB4817064 A GB 4817064A GB 1048057 A GB1048057 A GB 1048057A
Authority
GB
United Kingdom
Prior art keywords
emulsion
gelatin
weight
parts
silver halide
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
GB48170/64A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1048057A publication Critical patent/GB1048057A/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
    • G03C1/28—Sensitivity-increasing substances together with supersensitising 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
    • G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression

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)
  • Compositions Of Macromolecular Compounds (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1,048,057. Photosensitive silver halide materials. Nov. 26, 1964 [Jan. 3, 1964], No. 48170/64. Heading G2C. Haze is reduced in a gelatin-silver halide emulsion containing an agent which increases the covering power of the developed silver, such as dextran or polyvinyl pyrrolidone, by incorporating in the emulsion 2 to 15 parts by weight of an alkali metal or ammonium sulphate per 100 parts by weight of gelatin. The sulphate may be added to the emulsion as an aqueous solution at any stage after the final washing and preferably just prior to coating.
GB48170/64A 1964-01-03 1964-11-26 Photographic materials Expired GB1048057A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US335690A US3272631A (en) 1964-01-03 1964-01-03 Haze reduction of photographic emulsions containing a covering power agent

Publications (1)

Publication Number Publication Date
GB1048057A true GB1048057A (en) 1966-11-09

Family

ID=23312845

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48170/64A Expired GB1048057A (en) 1964-01-03 1964-11-26 Photographic materials

Country Status (3)

Country Link
US (1) US3272631A (en)
DE (1) DE1289422B (en)
GB (1) GB1048057A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3429708A (en) * 1966-05-25 1969-02-25 Gaf Corp Accelerator for chemical ripening
IT1133018B (en) * 1980-05-26 1986-07-09 Minnesota Mining & Mfg PHOTOGRAPHIC ELEMENT HAVING NON-GLOSSY SURFACE AND METHOD FOR OBTAINING THAT ELEMENT
JP2514064B2 (en) * 1988-02-26 1996-07-10 富士写真フイルム株式会社 Silver halide photographic material
US5514535A (en) * 1995-05-10 1996-05-07 Eastman Kodak Company Stabilized vinyl sulfone hardening compositions useful in photographic manufacturing
US5800976A (en) * 1997-02-18 1998-09-01 Eastman Kodak Company Radiographic elements that satisfy image and tone requirements with minimal silver
US5759759A (en) * 1997-02-18 1998-06-02 Eastman Kodak Company Radiographic elements exhibiting increased covering power and colder image tones
US6071681A (en) * 1997-05-20 2000-06-06 Konica Corporation Method for producing silver halide photographic light-sensitive material
US20060107323A1 (en) * 2004-11-16 2006-05-18 Mclean Ivan H System and method for using a dynamic credential to identify a cloned device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE484329A (en) * 1947-11-19
US2839405A (en) * 1955-03-08 1958-06-17 Eastman Kodak Co Inorganic salt antifoggants for photographic emulsions
NL245614A (en) * 1958-11-21
US3033682A (en) * 1959-05-22 1962-05-08 Du Pont Radiation-sensitive emulsions, elements, and processes for making same

Also Published As

Publication number Publication date
DE1289422B (en) 1969-02-13
US3272631A (en) 1966-09-13

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