GB1529440A - Method of producing silver halide photographic emulsions - Google Patents

Method of producing silver halide photographic emulsions

Info

Publication number
GB1529440A
GB1529440A GB51527/75A GB5152775A GB1529440A GB 1529440 A GB1529440 A GB 1529440A GB 51527/75 A GB51527/75 A GB 51527/75A GB 5152775 A GB5152775 A GB 5152775A GB 1529440 A GB1529440 A GB 1529440A
Authority
GB
United Kingdom
Prior art keywords
mixer
silver halide
silver
crystals
aqueous solution
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
GB51527/75A
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Publication of GB1529440A publication Critical patent/GB1529440A/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
    • G03C1/015—Apparatus or processes for the preparation of emulsions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/91—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with propellers
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G5/00—Compounds of silver
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/15—Stirrers with tubes for guiding the material
    • 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
    • G03C1/035—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein characterised by the crystal form or composition, e.g. mixed grain

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1529440 Immersion mixers FUJI PHOTO FILM CO Ltd 16 Dec 1975 [17 Dec 1974] 51527/75 Heading B1C [Also in Division G2] A method of producing a photographic silver halide emulsion in which at least 30% by weight of the silver halide crystals have a single twinning plane and have as boundary faces one or more planes selected from (100) and (111) planes comprises (a) supplying an aqueous solution of silver nitrate and an aqueous solution of a halide to a mixer in communication with a ripening tank containing an aqueous solution of a colloid, in such a manner that the silver ion concentration in the mixer is maintained at a value of from the equivalence point to the point at which PA g # 2 and the change of silver ion concentration (# E Ag) in the mixer is maintained to within Π4 millivolts, and (b) quickly mixing the aqueous solutions to form seed crystals of silver halide and then growing the seed crystals, the mean residence time of the reactants in the mixer being not more than 0.2 second, preferably below 0.15 second. The emulsion obtained has a minimum of 30% by weight of "chain-form" silver halide crystals. In a suitable apparatus a mixer 12 is positioned in ripening tank 19 containing aqueous colloid solution 20, which is circulated by stirring blade 15. Reactant liquids supplied through inlets 17 and 18 are vigorously stirred at high-speed by blade 14 which may form a radial and horizontal stream. The seed crystals are discharged through strainer 16, become suspended in the colloid solution and are circulated through the mixer. In another embodiment the reactants are introduced at the bottom of the mixer and the seeds pass upwards into the ripening tank which may take the form of a cubic container.
GB51527/75A 1974-12-17 1975-12-16 Method of producing silver halide photographic emulsions Expired GB1529440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49145380A JPS5171297A (en) 1974-12-17 1974-12-17 Harogenkaginketsushono seizohoho

Publications (1)

Publication Number Publication Date
GB1529440A true GB1529440A (en) 1978-10-18

Family

ID=15383890

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51527/75A Expired GB1529440A (en) 1974-12-17 1975-12-16 Method of producing silver halide photographic emulsions

Country Status (3)

Country Link
JP (1) JPS5171297A (en)
DE (1) DE2556884A1 (en)
GB (1) GB1529440A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126742A (en) * 1982-08-10 1984-03-28 Konishiroku Photo Ind Light-sensitive silver halide photographic material
GB2157840A (en) * 1984-04-16 1985-10-30 Konishiroku Photo Ind Light-sensitive silver halide photographic material
US4952489A (en) * 1987-07-24 1990-08-28 Minnesota Mining And Manufacturing Company Photographic elements comprising light-sensitive silver bromo-iodide emulsions
US5298385A (en) * 1992-06-15 1994-03-29 Eastman Kodak Company High chloride folded tabular grain emulsions

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5202226A (en) * 1989-08-10 1993-04-13 Fuji Photo Film Co., Ltd. Process for producing silver halide emulsion
JPH04139441A (en) * 1990-10-01 1992-05-13 Fuji Photo Film Co Ltd Production of silver halide emulsion
JP3160766B2 (en) * 1991-05-30 2001-04-25 コニカ株式会社 Ultrafine-grained gold and / or silver chalcogenides and their production

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126742A (en) * 1982-08-10 1984-03-28 Konishiroku Photo Ind Light-sensitive silver halide photographic material
GB2157840A (en) * 1984-04-16 1985-10-30 Konishiroku Photo Ind Light-sensitive silver halide photographic material
US4952489A (en) * 1987-07-24 1990-08-28 Minnesota Mining And Manufacturing Company Photographic elements comprising light-sensitive silver bromo-iodide emulsions
US5298385A (en) * 1992-06-15 1994-03-29 Eastman Kodak Company High chloride folded tabular grain emulsions

Also Published As

Publication number Publication date
DE2556884A1 (en) 1976-06-24
JPS5171297A (en) 1976-06-19
JPS5721489B2 (en) 1982-05-07

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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

Effective date: 19941216