GB670883A - Improvements in or relating to the production of photographic images - Google Patents

Improvements in or relating to the production of photographic images

Info

Publication number
GB670883A
GB670883A GB1645749A GB1645749A GB670883A GB 670883 A GB670883 A GB 670883A GB 1645749 A GB1645749 A GB 1645749A GB 1645749 A GB1645749 A GB 1645749A GB 670883 A GB670883 A GB 670883A
Authority
GB
United Kingdom
Prior art keywords
relating
production
photographic images
prepared
methylbenzthiazolyl
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
GB1645749A
Inventor
Jan Jaeken
Andre Emile Van Dormael
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.)
Gevaert Photo Producten NV
Original Assignee
Gevaert Photo Producten NV
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 Gevaert Photo Producten NV filed Critical Gevaert Photo Producten NV
Priority to GB1645749A priority Critical patent/GB670883A/en
Priority to FR1020550D priority patent/FR1020550A/en
Publication of GB670883A publication Critical patent/GB670883A/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
    • G03C1/64—Compositions containing iron compounds as photosensitive substances
    • 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
    • G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/725—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing inorganic compounds

Abstract

2 : 5 - Diphenyl - 3 - p - (61 - methylbenzthiazolyl-21)-phenyl-tetrazolium chloride is prepared by oxidizing the formazone prepared by reacting benzal-phenylhydrazine with diazotized dehydrothiotoluidine with lead tetracetate and acidifying with HCl.
GB1645749A 1949-06-21 1949-06-21 Improvements in or relating to the production of photographic images Expired GB670883A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1645749A GB670883A (en) 1949-06-21 1949-06-21 Improvements in or relating to the production of photographic images
FR1020550D FR1020550A (en) 1949-06-21 1950-06-20 Process for the production of photographic images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1645749A GB670883A (en) 1949-06-21 1949-06-21 Improvements in or relating to the production of photographic images

Publications (1)

Publication Number Publication Date
GB670883A true GB670883A (en) 1952-04-30

Family

ID=10077676

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1645749A Expired GB670883A (en) 1949-06-21 1949-06-21 Improvements in or relating to the production of photographic images

Country Status (2)

Country Link
FR (1) FR1020550A (en)
GB (1) GB670883A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855300A (en) * 1956-08-10 1958-10-07 Chalkley Lyman Process for fixing images on dye cyanide photosensitized materials
US2895892A (en) * 1954-08-10 1959-07-21 Chalkley Lyman Photochemical process
US2981622A (en) * 1959-07-13 1961-04-25 Chalkley Lyman Photographic process
US3185567A (en) * 1959-07-06 1965-05-25 Polaroid Corp Photographic color process and product
US3257205A (en) * 1960-10-12 1966-06-21 Gevaert Photo Prod Nv Method for heat development
US3433635A (en) * 1961-05-25 1969-03-18 Polaroid Corp Photographic process and product
US3642478A (en) * 1970-02-25 1972-02-15 Eastman Kodak Co Processes and compositions for converting zero valent metals photographic images to formazan dye images
US3655382A (en) * 1970-02-25 1972-04-11 Eastman Kodak Co Processes for converting zero-valent metals photographic images to formazan dye images
US3917484A (en) * 1974-04-03 1975-11-04 Eastman Kodak Co Photographic compositions, elements and processes for the production of formazan dye images of enhanced red absorption
US3957514A (en) * 1974-09-26 1976-05-18 Eastman Kodak Company Photographic element containing a photoreducible salt of an aryl hydroxy-carboxy anion and a tetrazolium cation and the use thereof
US4284704A (en) * 1976-08-13 1981-08-18 Eastman Kodak Company Photographic elements with incorporated hydrogen source photoreductant and tetrazolium salt
US4568633A (en) * 1985-01-02 1986-02-04 Eastman Kodak Company Photographic elements and processes utilizing imagewise reduction of ferric ions

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895892A (en) * 1954-08-10 1959-07-21 Chalkley Lyman Photochemical process
US2855300A (en) * 1956-08-10 1958-10-07 Chalkley Lyman Process for fixing images on dye cyanide photosensitized materials
US3185567A (en) * 1959-07-06 1965-05-25 Polaroid Corp Photographic color process and product
US2981622A (en) * 1959-07-13 1961-04-25 Chalkley Lyman Photographic process
US3257205A (en) * 1960-10-12 1966-06-21 Gevaert Photo Prod Nv Method for heat development
US3433635A (en) * 1961-05-25 1969-03-18 Polaroid Corp Photographic process and product
US3642478A (en) * 1970-02-25 1972-02-15 Eastman Kodak Co Processes and compositions for converting zero valent metals photographic images to formazan dye images
US3655382A (en) * 1970-02-25 1972-04-11 Eastman Kodak Co Processes for converting zero-valent metals photographic images to formazan dye images
US3917484A (en) * 1974-04-03 1975-11-04 Eastman Kodak Co Photographic compositions, elements and processes for the production of formazan dye images of enhanced red absorption
US3957514A (en) * 1974-09-26 1976-05-18 Eastman Kodak Company Photographic element containing a photoreducible salt of an aryl hydroxy-carboxy anion and a tetrazolium cation and the use thereof
US4284704A (en) * 1976-08-13 1981-08-18 Eastman Kodak Company Photographic elements with incorporated hydrogen source photoreductant and tetrazolium salt
US4568633A (en) * 1985-01-02 1986-02-04 Eastman Kodak Company Photographic elements and processes utilizing imagewise reduction of ferric ions

Also Published As

Publication number Publication date
FR1020550A (en) 1953-02-06

Similar Documents

Publication Publication Date Title
GB670883A (en) Improvements in or relating to the production of photographic images
GB1016824A (en) Photographic silver halide emulsions of increased sensitivity
MY5400018A (en) Improvements in or relating to the manufacture of derivatives of 3:5-dioxopyrazolidine
GB663550A (en) Improvements in or relating to the production of colour photographic images
MY5400055A (en) Improvements in or relating to ventilators of the louvre type
GB1369819A (en) Process for the manufacture of pentafluoroethyl iodide
GB645553A (en) Improvements relating to the processing of photographic film
GB637769A (en) Treatment of paper and paper pulp
CA449835A (en) Production of coloured photographic images
CA449834A (en) Production of coloured photographic images
AU142737B2 (en) Improvements in and relating tothe manufacture of carburetted water gas
FR993606A (en) Production of organosiloxanes
CA451351A (en) Process and composition for the production of coloured photographic pictures
CA451352A (en) Process and composition for the production of coloured photographic pictures
AU150271B2 (en) Improvements in or relating tothe production of water gas
FR1027411A (en) Improvements in the production of hydrogen peroxide
AU2954449A (en) Improvements in and relating tothe manufacture of carburetted water gas
GB963031A (en) Production of methallyl chloride
AU151181B2 (en) Improvements in or relating tothe production of Carbon Black
AU147023B2 (en) Improvements in or relating tothe production of organic fluorine compounds
AU138657B2 (en) Improvements in and relating tothe production of carburetted water gas
AU144963B2 (en) Improvements in or relating tothe manufacture of sliding clasp fasteners
GB664005A (en) Improvements relating to manually operated watertight and like doors
CA455534A (en) Calculator producing "sub-totals"
AU141722B2 (en) Improvements in or relating to the production of dinitrohexachlorobutanes