GB433586A - Method of obtaining photographic contrasts by means of naphthalene diazonium compounds - Google Patents

Method of obtaining photographic contrasts by means of naphthalene diazonium compounds

Info

Publication number
GB433586A
GB433586A GB30120/34A GB3012034A GB433586A GB 433586 A GB433586 A GB 433586A GB 30120/34 A GB30120/34 A GB 30120/34A GB 3012034 A GB3012034 A GB 3012034A GB 433586 A GB433586 A GB 433586A
Authority
GB
United Kingdom
Prior art keywords
exposure
paper
self
development
naphthalene
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
GB30120/34A
Other languages
English (en)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB433586A publication Critical patent/GB433586A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/20Bridges, shoes, throats, or other devices for withholding dirt, foam, or batch
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Paper (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
GB30120/34A 1933-12-27 1934-10-20 Method of obtaining photographic contrasts by means of naphthalene diazonium compounds Expired GB433586A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE433586X 1933-12-27

Publications (1)

Publication Number Publication Date
GB433586A true GB433586A (en) 1935-08-16

Family

ID=6500632

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30120/34A Expired GB433586A (en) 1933-12-27 1934-10-20 Method of obtaining photographic contrasts by means of naphthalene diazonium compounds

Country Status (4)

Country Link
US (1) US2106868A (enrdf_load_stackoverflow)
BE (1) BE407017A (enrdf_load_stackoverflow)
FR (1) FR783321A (enrdf_load_stackoverflow)
GB (1) GB433586A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE470580A (enrdf_load_stackoverflow) * 1946-01-18
NL70689C (enrdf_load_stackoverflow) * 1946-01-21
US4094681A (en) * 1975-10-23 1978-06-13 Trans World Technology Laboratories, Inc. Image amplification of negative-working diazo materials

Also Published As

Publication number Publication date
US2106868A (en) 1938-02-01
FR783321A (fr) 1935-07-11
BE407017A (enrdf_load_stackoverflow)

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