FR2454122B1 - - Google Patents

Info

Publication number
FR2454122B1
FR2454122B1 FR7921687A FR7921687A FR2454122B1 FR 2454122 B1 FR2454122 B1 FR 2454122B1 FR 7921687 A FR7921687 A FR 7921687A FR 7921687 A FR7921687 A FR 7921687A FR 2454122 B1 FR2454122 B1 FR 2454122B1
Authority
FR
France
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
FR7921687A
Other versions
FR2454122A1 (fr
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.)
Novartis AG
Original Assignee
Ciba Geigy AG
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
Priority claimed from CH925478A external-priority patent/CH637488A5/de
Priority claimed from CH319079A external-priority patent/CH644212A5/de
Application filed by Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of FR2454122A1 publication Critical patent/FR2454122A1/fr
Application granted granted Critical
Publication of FR2454122B1 publication Critical patent/FR2454122B1/fr
Granted 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
    • G03C1/485—Direct positive emulsions
    • G03C1/48515—Direct positive emulsions prefogged
    • G03C1/48523—Direct positive emulsions prefogged characterised by the desensitiser
    • G03C1/4853—Direct positive emulsions prefogged characterised by the desensitiser polymethine dyes

Landscapes

  • Chemical & Material Sciences (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)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Plural Heterocyclic Compounds (AREA)
FR7921687A 1978-09-01 1979-08-29 Matiere photographique directement positive Granted FR2454122A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH925478A CH637488A5 (en) 1978-09-01 1978-09-01 Direct-positive photographic emulsions
CH318979 1979-04-05
CH319079A CH644212A5 (en) 1979-04-05 1979-04-05 Direct-positive photographic material

Publications (2)

Publication Number Publication Date
FR2454122A1 FR2454122A1 (fr) 1980-11-07
FR2454122B1 true FR2454122B1 (fr) 1984-02-24

Family

ID=27174181

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7921687A Granted FR2454122A1 (fr) 1978-09-01 1979-08-29 Matiere photographique directement positive

Country Status (4)

Country Link
US (1) US4376817A (fr)
DE (1) DE2935333A1 (fr)
FR (1) FR2454122A1 (fr)
GB (1) GB2033595B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4711838A (en) * 1985-08-26 1987-12-08 Minnesota Mining And Manufacturing Company Photographic elements sensitive to near infrared
US5373119A (en) * 1990-11-23 1994-12-13 Kioritz Corporation Exhaust muffler for internal combustion engine
US5501946A (en) * 1992-07-29 1996-03-26 Fuji Photo Film Co., Ltd. Pre-fogged direct reversal silver halide photographic material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE464880A (fr) * 1939-03-07
GB549204A (en) * 1941-04-07 1942-11-11 John David Kendall Improvements in or relating to dyestuff intermediates
GB549203A (en) * 1941-04-07 1942-11-11 John David Kendall Improvements in or relating to dyestuffs
US3501306A (en) * 1966-03-11 1970-03-17 Eastman Kodak Co Regular grain photographic reversal emulsions
USRE29930E (en) 1967-03-02 1979-03-13 Eastman Kodak Company Direct-positive silver halide emulsion fogged with low levels of reduction and gold fogging agents

Also Published As

Publication number Publication date
DE2935333C2 (fr) 1991-05-29
DE2935333A1 (de) 1980-03-20
GB2033595B (en) 1983-02-09
FR2454122A1 (fr) 1980-11-07
US4376817A (en) 1983-03-15
GB2033595A (en) 1980-05-21

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse