GB1315755A - Preparation of photographic silver halide materials - Google Patents

Preparation of photographic silver halide materials

Info

Publication number
GB1315755A
GB1315755A GB2591771A GB2591771A GB1315755A GB 1315755 A GB1315755 A GB 1315755A GB 2591771 A GB2591771 A GB 2591771A GB 2591771 A GB2591771 A GB 2591771A GB 1315755 A GB1315755 A GB 1315755A
Authority
GB
United Kingdom
Prior art keywords
emulsion
azaindene
gold
aurous
thiosulphate
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
GB2591771A
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 GB1315755A publication Critical patent/GB1315755A/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)

Abstract

1315755 Photographic silver halide emulsion EASTMAN KODAK CO 19 April 1971 [6 April 1970] 25917/71 Heading G2C An azaindene and a monovalent gold compound are incorporated into a sensitive silver halide photographic emulsion which is free of sulphur sensitization prior to their incorporation and the emulsion is then subjected to a digestion step The gold compound may contain both monovalent gold atoms and sulphur atoms. Specified gold compounds are sodium aurous thiosulphate, potassium aurous thiosulphate, ammonium aurous thiosulphate, 2-aurosulpho-benzothiazole methochloride and aurous sulphide. The azaindene preferably has an acidic hydrogen atom capable of forming a silver salt of the azaindene in aqueous solution. The azaindene may be added to the emulsion prior to or simultaneously with the gold compound. The emulsion is preferably digested for at least 20 minutes at 70‹C. Generally, digestion is not effected between the azaindene addition and the gold compound addition, but the emulsion may be digested at this point. By means of this process silver hailde emulsions can be sulphur and gold sensitized in one chemical sensitizing step. Specification 1085638 is referred to:
GB2591771A 1970-04-06 1971-04-19 Preparation of photographic silver halide materials Expired GB1315755A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2607470A 1970-04-06 1970-04-06

Publications (1)

Publication Number Publication Date
GB1315755A true GB1315755A (en) 1973-05-02

Family

ID=21829736

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2591771A Expired GB1315755A (en) 1970-04-06 1971-04-19 Preparation of photographic silver halide materials

Country Status (3)

Country Link
BE (1) BE765332A (en)
FR (1) FR2089209A5 (en)
GB (1) GB1315755A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002174A1 (en) * 1981-12-19 1983-06-23 Takiguchi, Hideki Process for preparing silver halide emulsion
US5015567A (en) * 1983-10-07 1991-05-14 Fuji Photo Film Co., Ltd. Method for producing silver halide photographic emulsion and silver halide photographic material
EP0562476A1 (en) 1992-03-19 1993-09-29 Fuji Photo Film Co., Ltd. A silver halide photographic emulsion and a photographic light-sensitive material
EP0563985A1 (en) 1992-04-03 1993-10-06 Fuji Photo Film Co., Ltd. Silver halide color photographic material
EP0772079A2 (en) 1995-10-31 1997-05-07 Eastman Kodak Company Light-sensitive silber halide emulsions and processes for their preparation
EP0777153A1 (en) 1995-11-30 1997-06-04 Fuji Photo Film Co., Ltd. Silver halide color photographic light-sensitive material
EP1624337A2 (en) 2004-08-02 2006-02-08 Fuji Photo Film Co., Ltd. Silver halide holographic sensitive material and system for taking holographic images by using the same
EP1691237A2 (en) 2005-02-15 2006-08-16 Fuji Photo Film Co., Ltd. Holographic recording material and holographic recording method
EP1980908A1 (en) 2007-04-13 2008-10-15 FUJIFILM Corporation Silver halide photographic material and image forming method using the same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983002174A1 (en) * 1981-12-19 1983-06-23 Takiguchi, Hideki Process for preparing silver halide emulsion
US5015567A (en) * 1983-10-07 1991-05-14 Fuji Photo Film Co., Ltd. Method for producing silver halide photographic emulsion and silver halide photographic material
EP0562476A1 (en) 1992-03-19 1993-09-29 Fuji Photo Film Co., Ltd. A silver halide photographic emulsion and a photographic light-sensitive material
EP0563985A1 (en) 1992-04-03 1993-10-06 Fuji Photo Film Co., Ltd. Silver halide color photographic material
EP0772079A2 (en) 1995-10-31 1997-05-07 Eastman Kodak Company Light-sensitive silber halide emulsions and processes for their preparation
EP0777153A1 (en) 1995-11-30 1997-06-04 Fuji Photo Film Co., Ltd. Silver halide color photographic light-sensitive material
EP1624337A2 (en) 2004-08-02 2006-02-08 Fuji Photo Film Co., Ltd. Silver halide holographic sensitive material and system for taking holographic images by using the same
EP1691237A2 (en) 2005-02-15 2006-08-16 Fuji Photo Film Co., Ltd. Holographic recording material and holographic recording method
EP1980908A1 (en) 2007-04-13 2008-10-15 FUJIFILM Corporation Silver halide photographic material and image forming method using the same

Also Published As

Publication number Publication date
BE765332A (en) 1971-08-30
FR2089209A5 (en) 1972-01-07

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee