GB1351309A - Photographic silver halide emulsions - Google Patents

Photographic silver halide emulsions

Info

Publication number
GB1351309A
GB1351309A GB3896971A GB3896971A GB1351309A GB 1351309 A GB1351309 A GB 1351309A GB 3896971 A GB3896971 A GB 3896971A GB 3896971 A GB3896971 A GB 3896971A GB 1351309 A GB1351309 A GB 1351309A
Authority
GB
United Kingdom
Prior art keywords
silver halide
emulsion
halide emulsions
salt
photographic silver
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
GB3896971A
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 GB1351309A publication Critical patent/GB1351309A/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
    • 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
    • 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
    • G03C2001/03523—Converted grains
    • 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
    • G03C2200/00—Details
    • G03C2200/06—Additive

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1351309 Silver halide emulsions EASTMAN KODAK CO 19 Aug 1971 [20 Aug 1970] 38969/71 Heading G2C An emulsion of silver chloride, thiocyanate or citrate is converted to an emulsion of silver bromide or bromide iodide in the presence of a salt of gold, platinum, palladium, ruthenium, rhodium, iridium or osmium, the noble metal salt being added (at a concentration of 3 x 10<SP>-7</SP> to 3 x 10<SP>-</SP><SP>5</SP> mole per cent based on silver halide) to the emulsion before the conversion step or before 80% completion thereof. The conversion may be incomplete. A mercury salt may be added (as antifoggant) at any stage.
GB3896971A 1970-08-20 1971-08-19 Photographic silver halide emulsions Expired GB1351309A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6569670A 1970-08-20 1970-08-20

Publications (1)

Publication Number Publication Date
GB1351309A true GB1351309A (en) 1974-04-24

Family

ID=22064496

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3896971A Expired GB1351309A (en) 1970-08-20 1971-08-19 Photographic silver halide emulsions

Country Status (7)

Country Link
US (1) US3703584A (en)
AU (1) AU458978B2 (en)
BE (1) BE771339A (en)
DE (1) DE2141392A1 (en)
FR (1) FR2104403A5 (en)
GB (1) GB1351309A (en)
IT (1) IT941691B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4828962A (en) * 1986-10-15 1989-05-09 Minnesota Mining And Manufacturing Company High contrast scanner photographic elements employing ruthenium and iridium dopants

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1570581A (en) * 1978-05-25 1980-07-02 Ciba Geigy Ag Preparation of silver halide emulsions
US4207103A (en) * 1978-06-26 1980-06-10 Eastman Kodak Company Photographic print-out silver halide process
DE2932650C2 (en) 1979-08-11 1982-03-11 Du Pont de Nemours (Deutschland) GmbH, 4000 Düsseldorf Process for the preparation of a monodisperse silver halide photographic emulsion
EP0311104B1 (en) * 1987-10-09 1994-04-20 Fuji Photo Film Co., Ltd. Silver halide color photographic material
US4802784A (en) * 1988-03-11 1989-02-07 Santa Barbara Research Center Bi-flex pivot
US5156946A (en) * 1988-05-30 1992-10-20 Fuji Photo Film Co., Ltd Silver halide photographic materials
JPH0427935A (en) * 1990-05-23 1992-01-30 Fuji Photo Film Co Ltd Silver halide photographic sensitive material
JPH05165139A (en) * 1991-12-17 1993-06-29 Konica Corp Dye image forming method
US5443946A (en) * 1992-06-05 1995-08-22 Fuji Photo Film Co., Ltd. Silver halide color photographic material and method for forming color image
JPH0887097A (en) * 1994-09-16 1996-04-02 Konica Corp Picture forming method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4828962A (en) * 1986-10-15 1989-05-09 Minnesota Mining And Manufacturing Company High contrast scanner photographic elements employing ruthenium and iridium dopants

Also Published As

Publication number Publication date
IT941691B (en) 1973-03-10
US3703584A (en) 1972-11-21
BE771339A (en) 1971-12-16
AU458978B2 (en) 1975-03-13
DE2141392A1 (en) 1972-02-24
AU3254671A (en) 1973-02-22
FR2104403A5 (en) 1972-04-14

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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