GB1287978A - - Google Patents

Info

Publication number
GB1287978A
GB1287978A GB3116670A GB1287978DA GB1287978A GB 1287978 A GB1287978 A GB 1287978A GB 3116670 A GB3116670 A GB 3116670A GB 1287978D A GB1287978D A GB 1287978DA GB 1287978 A GB1287978 A GB 1287978A
Authority
GB
United Kingdom
Prior art keywords
silver halide
potassium ferricyanide
emulsion
ilford
comptroller
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
GB3116670A
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 filed Critical
Publication of GB1287978A publication Critical patent/GB1287978A/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

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1287978 Silver halide emulsions ILFORD Ltd 20 May 1971 [26 June 1970] 31166/70 Heading G2C Aqueous potassium ferricyanide is added to gelatine/silver halide emulsion before or during physical ripening. The emulsion is then flocculated and chemically sensitized. 0À01-1À0 gm of potassium ferricyanide per 1À5 moles of silver salt may be employed. The internal sensitivity is thereby decreased. Reference has been directed by the Comptroller to Specification 1244818.
GB3116670A 1970-06-26 1970-06-26 Expired GB1287978A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3116670 1970-06-26

Publications (1)

Publication Number Publication Date
GB1287978A true GB1287978A (en) 1972-09-06

Family

ID=10319020

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3116670A Expired GB1287978A (en) 1970-06-26 1970-06-26

Country Status (9)

Country Link
US (1) US3741767A (en)
JP (1) JPS5331365B1 (en)
BE (1) BE769053A (en)
CA (1) CA965289A (en)
CH (1) CH547507A (en)
DE (1) DE2131455C3 (en)
ES (1) ES392612A1 (en)
FR (1) FR2099906A5 (en)
GB (1) GB1287978A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890154A (en) * 1969-12-24 1975-06-17 Fuji Photo Film Co Ltd Light-sensitive silver halide photographic materials
JPH0814682B2 (en) * 1988-01-18 1996-02-14 富士写真フイルム株式会社 Silver halide photosensitive material

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3684985A (en) * 1971-08-30 1972-08-15 Amerace Esna Corp Convertible timing device

Also Published As

Publication number Publication date
DE2131455B2 (en) 1979-09-20
BE769053A (en) 1971-12-27
DE2131455A1 (en) 1972-01-13
CH547507A (en) 1974-03-29
CA965289A (en) 1975-04-01
FR2099906A5 (en) 1972-03-17
US3741767A (en) 1973-06-26
ES392612A1 (en) 1975-10-16
DE2131455C3 (en) 1980-06-04
JPS5331365B1 (en) 1978-09-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee