GB581001A - Improvements in diazotype processes - Google Patents

Improvements in diazotype processes

Info

Publication number
GB581001A
GB581001A GB30407/39A GB3040739A GB581001A GB 581001 A GB581001 A GB 581001A GB 30407/39 A GB30407/39 A GB 30407/39A GB 3040739 A GB3040739 A GB 3040739A GB 581001 A GB581001 A GB 581001A
Authority
GB
United Kingdom
Prior art keywords
exposure
light
actinic
diazo compound
nov
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
GB30407/39A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB581001A publication Critical patent/GB581001A/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
    • G03C1/52—Compositions containing diazo compounds as photosensitive substances
    • G03C1/54—Diazonium salts or diazo anhydrides
    • 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
    • G03C1/52—Compositions containing diazo compounds as photosensitive substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Color Printing (AREA)
  • Pyrane Compounds (AREA)

Abstract

581,001. Photographic diazotype processes. FRANGIALLI, P. Nov. 20, 1939, No. 30407. Convention date, Nov. 19, 1938. [Class 98 (ii)] Positive images are obtained using a lightsensitive diazo compound capable of coupling with a product of its light-decomposition to give an azo dye by exposing under an original (such as a drawing) on a translucent carrier to highly actinic illumination, removing the original, and giving an exposure to slightly actinic illumination or for a short period to an actinic source. The strongly actinic light for the first exposure may be a carbon arc, and the light for the second exposure Wood's light, diffuse daylight, or a high-pressure mercury vapour lamp. A short exposure to the carbon arc may, alternatively, be given. The paper may be damped between the two exposures, and may be allowed to remain in the dark after the second exposure to allow coupling to take place. Hygroscopic substances such as glycerol or glycol may be added to the sensitive material. Urea may also be added. The diazo compound may be an iminazole derivative, for example the diazo compound from C-methylamino-4- naphthiminazole. The Specification as open to inspection under Sect. 91 states that with pencil drawings with slightly opaque lines, the second exposure is unnecessary. This subject-matter does not appear in the Specification as accepted.
GB30407/39A 1938-11-19 1939-11-20 Improvements in diazotype processes Expired GB581001A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR887731X 1938-11-19

Publications (1)

Publication Number Publication Date
GB581001A true GB581001A (en) 1946-09-27

Family

ID=9376291

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30407/39A Expired GB581001A (en) 1938-11-19 1939-11-20 Improvements in diazotype processes

Country Status (5)

Country Link
US (1) US2313288A (en)
CH (1) CH219164A (en)
DE (1) DE887731C (en)
FR (1) FR853868A (en)
GB (1) GB581001A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727820A (en) * 1952-04-29 1955-12-20 Gen Aniline & Film Corp Light-sensitive diazotype layers containing carboxamides
US2732299A (en) * 1952-07-22 1956-01-24 Light sensitive

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL66149C (en) * 1946-01-18
NL70689C (en) * 1946-01-21
NL67082C (en) * 1946-06-01
US2691587A (en) * 1949-07-20 1954-10-12 Rca Corp Developing of diazotype images
NL264445A (en) * 1959-04-22
NL261709A (en) * 1960-03-04
DE1572048C3 (en) * 1965-09-10 1978-10-26 Hoechst Ag, 6000 Frankfurt Heat developable diazotype material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE82239C (en) *
DE381551C (en) * 1920-11-29 1923-09-21 Kalle & Co Akt Ges Process for developing copies from diazo anhydrides
DE383510C (en) * 1921-07-30 1923-10-13 Kalle & Co Akt Ges Production of diazotypes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727820A (en) * 1952-04-29 1955-12-20 Gen Aniline & Film Corp Light-sensitive diazotype layers containing carboxamides
US2732299A (en) * 1952-07-22 1956-01-24 Light sensitive

Also Published As

Publication number Publication date
US2313288A (en) 1943-03-09
CH219164A (en) 1942-01-31
FR853868A (en) 1940-03-30
DE887731C (en) 1953-08-27

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