GB1447307A - Photographic silver halide emulsions - Google Patents

Photographic silver halide emulsions

Info

Publication number
GB1447307A
GB1447307A GB2064174A GB2064174A GB1447307A GB 1447307 A GB1447307 A GB 1447307A GB 2064174 A GB2064174 A GB 2064174A GB 2064174 A GB2064174 A GB 2064174A GB 1447307 A GB1447307 A GB 1447307A
Authority
GB
United Kingdom
Prior art keywords
emulsions
silver halide
silver
plane
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
GB2064174A
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 GB1447307A publication Critical patent/GB1447307A/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
    • G03C1/035—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein characterised by the crystal form or composition, e.g. mixed grain
    • 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
    • G03C1/0051—Tabular grain emulsions
    • G03C2001/0058—Twinned crystal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/166—Toner containing

Landscapes

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

Abstract

1447307 Photographic silver halide emulsions FUJI PHOTO FILM CO Ltd 9 May 1974 [11 May 1973] 20641/74 Heading G2C Photographic silver halide emulsions contain a hydrophilic binder and silver halide crystals of which more than 30 wt per cent are irregular, have only one trimming plane and have boundary planes with the binder comprising a (100), plane, a (111) plane or mixed (100) and (111) plants. The emulsions are more highly monodisperse, have a higher optical sensitization rate and form a more sensitive direct-positive emulsion then prior art emulsions and are prepared by single or double jet precipitation provided one or more of the following conditions is satisfied:- (1) in the twin jet method, the silver ion concentration must be kept in the range of from the equivalence point to #p Ag = 1; (2) the concentrations of silver nitrate and halide solutions must be in the range of from 2-normal to saturation; (3) in the initial stage of precipitation, no silver halide solvent must be present; and (4) mixing of silver nitrate and halide solutions must be rapid so that near the equivalence point the change of silver ion concentration (#E Ag) is less than 2mV. Alternatively, the irregular grains used in the present emulsions may be separated from conventional emulsions by centrifuge. Examples include the preparation of a directpositive emulsion.
GB2064174A 1973-05-11 1974-05-09 Photographic silver halide emulsions Expired GB1447307A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5239073A JPS5542738B2 (en) 1973-05-11 1973-05-11

Publications (1)

Publication Number Publication Date
GB1447307A true GB1447307A (en) 1976-08-25

Family

ID=12913460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2064174A Expired GB1447307A (en) 1973-05-11 1974-05-09 Photographic silver halide emulsions

Country Status (4)

Country Link
US (1) US3885970A (en)
JP (1) JPS5542738B2 (en)
DE (1) DE2422765A1 (en)
GB (1) GB1447307A (en)

Cited By (2)

* 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
US5298385A (en) * 1992-06-15 1994-03-29 Eastman Kodak Company High chloride folded tabular grain emulsions

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1486603A (en) * 1974-04-26 1977-09-21 Agfa Gevaert Rapid processing at elevated temperature of exposed silver halide elements
GB1469480A (en) * 1974-08-07 1977-04-06 Ciba Geigy Ag Photographic emulsion
GB1596602A (en) * 1978-02-16 1981-08-26 Ciba Geigy Ag Preparation of silver halide emulsions
GB1570581A (en) * 1978-05-25 1980-07-02 Ciba Geigy Ag Preparation of silver halide emulsions
JPS607775B2 (en) * 1977-07-26 1985-02-27 富士写真フイルム株式会社 Method for preparing composition for heat-developable photosensitive material
DE2951670C2 (en) * 1978-12-26 1986-09-18 E.I. Du Pont De Nemours And Co., Wilmington, Del. Photographic silver halide gelatin emulsion, and its preparation and use
JPS5945132B2 (en) * 1979-04-23 1984-11-05 富士写真フイルム株式会社 Method for producing photosensitive silver halide crystals
EP0070181A1 (en) * 1981-07-10 1983-01-19 Konica Corporation Silver halide light-sensitive color photographic material
WO1983000234A1 (en) * 1981-07-10 1983-01-20 Yamashita, Kiyoshi Silver halide color photographic sensitive material
JPS60136738A (en) * 1983-12-22 1985-07-20 Fuji Photo Film Co Ltd Photosensitive silver halide material
JPS60225143A (en) * 1984-04-20 1985-11-09 Konishiroku Photo Ind Co Ltd Silver halide photosensitive material
JPH0617985B2 (en) * 1984-04-20 1994-03-09 コニカ株式会社 Multilayer silver halide color photographic light-sensitive material
JPS6114292A (en) * 1984-06-29 1986-01-22 エドウイン　ク−パ−　アンド　カンパニ−　リミテツド Liquid fuel and anticorrosive-containing condensate
EP0171238B1 (en) * 1984-07-28 1991-05-02 Konica Corporation Silver halide grains, preparation thereof and light-sensitive photographic material containing said grains
JPH0644133B2 (en) * 1985-04-17 1994-06-08 富士写真フイルム株式会社 Silver halide photographic light-sensitive material
US4680254A (en) * 1985-09-03 1987-07-14 Eastman Kodak Company Emulsions and photographic elements containing silver halide grains having hexoctamedral crystal faces
US4680255A (en) * 1985-09-03 1987-07-14 Eastman Kodak Company Emulsions and photographic elements containing silver halide grains having tetrahexahedral crystal faces
US4724200A (en) * 1985-09-03 1988-02-09 Eastman Kodak Company Emulsions and photographic elements containing silver halide grains having icositetrahedral crystal faces
US4643966A (en) * 1985-09-03 1987-02-17 Eastman Kodak Company Emulsions and photographic elements containing ruffled silver halide grains
US4680256A (en) * 1985-09-03 1987-07-14 Eastman Kodak Company Emulsions and photographic elements containing silver halide grains having trisoctahedra crystal faces
JPH02308241A (en) * 1989-05-24 1990-12-21 Fuji Photo Film Co Ltd Prefogged direct positive silver halide emulsion
JP2736450B2 (en) * 1989-10-27 1998-04-02 コニカ株式会社 Silver halide photographic material with high sensitivity, high image quality and excellent gradation
JPH03220550A (en) * 1990-01-25 1991-09-27 Fuji Photo Film Co Ltd Silver halide photographic sensitive material and silver halide emulsion
US5310644A (en) * 1991-09-17 1994-05-10 Eastman Kodak Company Process for preparing a photographic emulsion using excess halide during nucleation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1547740A1 (en) * 1965-10-21 1969-12-04 Eastman Kodak Co Process for the preparation of silver halide emulsions with silver halide crystals of regular cubic shape
GB1376443A (en) * 1971-05-11 1974-12-04 Agfa Gevaert Manufacture of photographic silver halide materials

Cited By (2)

* 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
US5298385A (en) * 1992-06-15 1994-03-29 Eastman Kodak Company High chloride folded tabular grain emulsions

Also Published As

Publication number Publication date
US3885970A (en) 1975-05-27
JPS5542738B2 (en) 1980-11-01
JPS503329A (en) 1975-01-14
DE2422765A1 (en) 1974-11-28

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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