US1751318A - Process for obtaining photographic images - Google Patents

Process for obtaining photographic images Download PDF

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Publication number
US1751318A
US1751318A US141671A US14167126A US1751318A US 1751318 A US1751318 A US 1751318A US 141671 A US141671 A US 141671A US 14167126 A US14167126 A US 14167126A US 1751318 A US1751318 A US 1751318A
Authority
US
United States
Prior art keywords
photographic images
phenols
obtaining photographic
obtaining
acid
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 - Lifetime
Application number
US141671A
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English (en)
Inventor
Gay Eugene
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
Application granted granted Critical
Publication of US1751318A publication Critical patent/US1751318A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/52Compositions containing diazo compounds as photosensitive substances
    • G03C1/58Coupling substances therefor

Definitions

  • the invention consists in adding to the diazo bodies forming the sensitive film or layer certain substances which produce phenols or naphthols by the action of alkalies, which permits sensitive films or layers to be obtained which can be developed by the simple action of alkaline substances (vapours of ammonia or alkaline baths).
  • the difliculty referred to is obviated in replacing phenol or naphthol by one of its acetyl derivatives capable of regeneration under the action of the alkali employed during 'the development, which is introduced only at the moment of development.
  • Theacetyl derivatives of phenols, di and tri-phenols, naphthols, dioxynaphthalines and amidonaphthols lend themselves particularly well to obtaining stable mixtures With diazo bodies in a neutral medium.
  • Ac. (in which R represents a benzene or naphthalene nucleus substituted or not substituted and Ac. denotes an acid radicle) may be employed. Certain of these products being slightly soluble in water their sulpho or carboxyl derivatives may be used or even the alkaline salts of these derivatives.
  • the diazo body and the acetyl derivative of phenol or naphthol are mixed and the mixture used for the formation of the sensitive film or layer on the support, so that on exposure to light under a drawing or the like, the imagefin azo colour,
  • the colour which constitutes the image is identical with that obtained by coupling of the diazohydroquinonedimethyl ether and the chromotropic acid, that is to say, that it has the property of giving lakes with metallic salts, which permits of varying the shade by trial either in toning them in baths of metallic salts after development .or in introducing these salts in the sensitive bath.

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)
  • Luminescent Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
US141671A 1925-10-20 1926-10-14 Process for obtaining photographic images Expired - Lifetime US1751318A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR616562T 1925-10-20
FR31582T 1925-10-23

Publications (1)

Publication Number Publication Date
US1751318A true US1751318A (en) 1930-03-18

Family

ID=26235328

Family Applications (2)

Application Number Title Priority Date Filing Date
US141671A Expired - Lifetime US1751318A (en) 1925-10-20 1926-10-14 Process for obtaining photographic images
US141670A Expired - Lifetime US1841801A (en) 1925-10-20 1926-10-14 Process for obtaining photographic images

Family Applications After (1)

Application Number Title Priority Date Filing Date
US141670A Expired - Lifetime US1841801A (en) 1925-10-20 1926-10-14 Process for obtaining photographic images

Country Status (5)

Country Link
US (2) US1751318A (enrdf_load_stackoverflow)
BE (2) BE336886A (enrdf_load_stackoverflow)
DE (1) DE545486C (enrdf_load_stackoverflow)
FR (2) FR616562A (enrdf_load_stackoverflow)
GB (2) GB282894A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2416021A (en) * 1944-12-29 1947-02-18 Gen Aniline & Film Corp Light sensitive diazotype compositions and process

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE763721C (de) * 1942-02-19 1953-10-05 Kalle & Co Ag Lichtempfindliche Schichten
BE473113A (enrdf_load_stackoverflow) * 1946-05-08
FR1055783A (fr) * 1950-03-28 1954-02-22 Matériel et procédé pour l'obtention d'images photographiques sur textiles et matériaux souples
US5451566A (en) * 1993-11-17 1995-09-19 Zeneca Limited Herbicidal pyrrolopyridine compounds
US10600748B2 (en) 2016-06-20 2020-03-24 Samsung Electronics Co., Ltd. Fan-out semiconductor package

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2416021A (en) * 1944-12-29 1947-02-18 Gen Aniline & Film Corp Light sensitive diazotype compositions and process

Also Published As

Publication number Publication date
BE336886A (enrdf_load_stackoverflow)
FR31582E (fr) 1927-03-17
FR616562A (fr) 1927-02-04
GB282894A (en) 1927-12-30
DE545486C (de) 1932-03-01
BE336885A (enrdf_load_stackoverflow)
US1841801A (en) 1932-01-19
GB283274A (en) 1928-01-06

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