EP0326433A3 - High contrast photographic materials containing microcrystal dispersions of hydrazines - Google Patents

High contrast photographic materials containing microcrystal dispersions of hydrazines Download PDF

Info

Publication number
EP0326433A3
EP0326433A3 EP19890300866 EP89300866A EP0326433A3 EP 0326433 A3 EP0326433 A3 EP 0326433A3 EP 19890300866 EP19890300866 EP 19890300866 EP 89300866 A EP89300866 A EP 89300866A EP 0326433 A3 EP0326433 A3 EP 0326433A3
Authority
EP
European Patent Office
Prior art keywords
high contrast
hydrazines
materials containing
photographic materials
contrast 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.)
Granted
Application number
EP19890300866
Other languages
German (de)
French (fr)
Other versions
EP0326433A2 (en
EP0326433B1 (en
Inventor
Kevin P. Minnesota 3M Research Ltd Hall
George W. Beebe
Edmund C. Newman
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing 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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of EP0326433A2 publication Critical patent/EP0326433A2/en
Publication of EP0326433A3 publication Critical patent/EP0326433A3/en
Application granted granted Critical
Publication of EP0326433B1 publication Critical patent/EP0326433B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G03C1/061—Hydrazine compounds
    • 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

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)

Abstract

A negative acting photographic material capable of producing a high contrast image comprising a photographic silver halide emulsion in association with a water-­ insoluble hydrazine in the form of microcystals having a mean particle size of not more than 10 microns, preferably 0.05 to 5 microns. The microcrystals may be in the photographic silver halide emulsion or in a layer adjacent thereto.
EP19890300866 1988-01-29 1989-01-30 High contrast photographic materials containing microcrystal dispersions of hydrazines Expired - Lifetime EP0326433B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888802024A GB8802024D0 (en) 1988-01-29 1988-01-29 High contrast photographic materials containing microcrystal dispersions of hydrazines
GB8802024 1988-01-29

Publications (3)

Publication Number Publication Date
EP0326433A2 EP0326433A2 (en) 1989-08-02
EP0326433A3 true EP0326433A3 (en) 1991-01-16
EP0326433B1 EP0326433B1 (en) 1996-04-03

Family

ID=10630748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890300866 Expired - Lifetime EP0326433B1 (en) 1988-01-29 1989-01-30 High contrast photographic materials containing microcrystal dispersions of hydrazines

Country Status (4)

Country Link
EP (1) EP0326433B1 (en)
JP (1) JPH023033A (en)
DE (1) DE68926127T2 (en)
GB (1) GB8802024D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07175159A (en) * 1993-12-17 1995-07-14 Konica Corp Silver halide photographic sensitive material and processing method therefor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2803196A1 (en) * 1977-02-01 1978-08-03 Konishiroku Photo Ind LIGHT SENSITIVE PHOTOGRAPHIC SILVER HALOGENIDE RECORDING MATERIAL
DE3246826A1 (en) * 1981-12-17 1983-06-30 Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa METHOD FOR PRODUCING A PHOTOGRAPHIC EMULSION
EP0253665B1 (en) * 1986-07-16 1992-01-02 Minnesota Mining And Manufacturing Company Silver halide photographic lightsensitive systems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5722089A (en) * 1980-07-10 1982-02-04 Serabisu Sa Pageant indicator for typewriter
JPS589410A (en) * 1981-07-09 1983-01-19 Toshiba Corp Operational amplifier
JPS5830568A (en) * 1981-08-19 1983-02-23 Oval Eng Co Ltd Constant flow valve
JPS5952817A (en) * 1982-09-20 1984-03-27 Hitachi Ltd Transformer
CA1232068A (en) * 1984-06-08 1988-01-26 National Research Council Of Canada Form depicting, optical interference authenticating device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2803196A1 (en) * 1977-02-01 1978-08-03 Konishiroku Photo Ind LIGHT SENSITIVE PHOTOGRAPHIC SILVER HALOGENIDE RECORDING MATERIAL
DE3246826A1 (en) * 1981-12-17 1983-06-30 Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa METHOD FOR PRODUCING A PHOTOGRAPHIC EMULSION
EP0253665B1 (en) * 1986-07-16 1992-01-02 Minnesota Mining And Manufacturing Company Silver halide photographic lightsensitive systems

Also Published As

Publication number Publication date
EP0326433A2 (en) 1989-08-02
EP0326433B1 (en) 1996-04-03
DE68926127T2 (en) 1996-08-29
DE68926127D1 (en) 1996-05-09
GB8802024D0 (en) 1988-02-24
JPH023033A (en) 1990-01-08

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