GB1244818A - Process for production of a silver halide photographic emulsion - Google Patents

Process for production of a silver halide photographic emulsion

Info

Publication number
GB1244818A
GB1244818A GB23746/70A GB2374670A GB1244818A GB 1244818 A GB1244818 A GB 1244818A GB 23746/70 A GB23746/70 A GB 23746/70A GB 2374670 A GB2374670 A GB 2374670A GB 1244818 A GB1244818 A GB 1244818A
Authority
GB
United Kingdom
Prior art keywords
silver halide
emulsion
iron compound
production
halide photographic
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
GB23746/70A
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 GB1244818A publication Critical patent/GB1244818A/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)
  • Colloid Chemistry (AREA)

Abstract

1,244,818. Making photographic silver halide emulsions. FUJI PHOTO FILM CO. Ltd. May 15, 1970 [May 17, 1969], No.23746/70. Heading G2C. A photographic silver halide emulsion of increased contrast is made by precipitating the silver halide in colloid solution in the presence of a water-soluble iron compound in an amount of 10<SP>-7</SP> to 10<SP>-3</SP> mole per mole of silver salt used in the precipation. The iron compound may be organic or inorganic and a large list is given; compounds used in Examples are potassium ferricyanide, potassium ferrocyanide and ferric thiocyanate. Other salts which may be added are those of rhodium, iridium, nickel, copper, zinc, cadmium, mercury, lead, thallium, platinum, palladium and gold. The emulsion may also contain hydroquinone as an incorporated developer and formaldehyde and hardener.
GB23746/70A 1969-05-17 1970-05-15 Process for production of a silver halide photographic emulsion Expired GB1244818A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44038249A JPS4835373B1 (en) 1969-05-17 1969-05-17

Publications (1)

Publication Number Publication Date
GB1244818A true GB1244818A (en) 1971-09-02

Family

ID=12520018

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23746/70A Expired GB1244818A (en) 1969-05-17 1970-05-15 Process for production of a silver halide photographic emulsion

Country Status (9)

Country Link
US (1) US3672901A (en)
JP (1) JPS4835373B1 (en)
BE (1) BE750430A (en)
CA (1) CA965635A (en)
CH (1) CH538133A (en)
DE (1) DE2024003C3 (en)
FR (1) FR2049106B1 (en)
GB (1) GB1244818A (en)
NL (1) NL7007088A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5068167A (en) * 1987-04-02 1991-11-26 Minnesota Mining And Manufacturing Company High contrast photographic materials

Families Citing this family (22)

* 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
US3901713A (en) * 1971-06-02 1975-08-26 Fuji Photo Film Co Ltd Process for the manufacture of silver halide photographic emulsion containing iridium and rhodium
GB1445192A (en) * 1973-04-26 1976-08-04 Agfa Gevaert Method of preparing photographic silver halide emulisons
US4332887A (en) * 1980-10-06 1982-06-01 Polaroid Corporation Method for preparing photosensitive silver halide emulsions
JPH0814682B2 (en) * 1988-01-18 1996-02-14 富士写真フイルム株式会社 Silver halide photosensitive material
JPH07111554B2 (en) * 1988-11-04 1995-11-29 富士写真フイルム株式会社 Silver halide photographic light-sensitive material
JP2670842B2 (en) * 1989-03-31 1997-10-29 富士写真フイルム株式会社 Direct-positive silver halide photographic light-sensitive material
DE69222385T2 (en) * 1991-03-22 1998-04-09 Eastman Kodak Co COMBINATIONS OF DOPING WITH IRIDIUM AND TRANSITION METAL NITROSYL COMPLEXES IN SILVER HALOGENIDE
JP2847455B2 (en) * 1992-07-24 1999-01-20 富士写真フイルム株式会社 Silver halide photographic material
DE69406562T2 (en) * 1993-01-12 1998-06-04 Eastman Kodak Co Photographic silver halide emulsion containing contrast enhancing dopants
US5256530A (en) * 1993-01-12 1993-10-26 Eastman Kodak Company Photographic silver halide emulsion containing contrast improving grain surface modifiers
US5385817A (en) * 1993-01-12 1995-01-31 Eastman Kodak Company Photographic emulsions containing internally and externally modified silver halide grains
US5252451A (en) * 1993-01-12 1993-10-12 Eastman Kodak Company Photographic emulsions containing internally and externally modified silver halide grains
US5532119A (en) * 1993-03-25 1996-07-02 Eastman Kodak Company High-speed direct-positive photographic elements utilizing core-shell emulsions
US5360712A (en) * 1993-07-13 1994-11-01 Eastman Kodak Company Internally doped silver halide emulsions and processes for their preparation
US5457021A (en) * 1994-05-16 1995-10-10 Eastman Kodak Company Internally doped high chloride {100} tabular grain emulsions
US5480771A (en) * 1994-09-30 1996-01-02 Eastman Kodak Company Photographic emulsion containing transition metal complexes
US5462849A (en) * 1994-10-27 1995-10-31 Eastman Kodak Company Silver halide emulsions with doped epitaxy
US5474888A (en) * 1994-10-31 1995-12-12 Eastman Kodak Company Photographic emulsion containing transition metal complexes
US5500335A (en) * 1994-10-31 1996-03-19 Eastman Kodak Company Photographic emulsion containing transition metal complexes
DE19626691C2 (en) * 1996-07-03 1998-07-02 Ver Glaswerke Gmbh Process for producing a photochromic layer
US6911303B2 (en) * 2002-02-14 2005-06-28 Fuji Photo Film, Co., Ltd. Light-sensitive silver halide grain

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5068167A (en) * 1987-04-02 1991-11-26 Minnesota Mining And Manufacturing Company High contrast photographic materials

Also Published As

Publication number Publication date
CH538133A (en) 1973-06-15
DE2024003C3 (en) 1979-07-26
CA965635A (en) 1975-04-08
DE2024003B2 (en) 1978-11-23
FR2049106B1 (en) 1973-02-02
NL7007088A (en) 1970-11-19
DE2024003A1 (en) 1970-12-03
JPS4835373B1 (en) 1973-10-27
BE750430A (en) 1970-10-16
US3672901A (en) 1972-06-27
FR2049106A1 (en) 1971-03-26

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