GB690094A - Improvements in or relating to methods of producing photographic developed images consisting of metal - Google Patents

Improvements in or relating to methods of producing photographic developed images consisting of metal

Info

Publication number
GB690094A
GB690094A GB27502/48A GB2750248A GB690094A GB 690094 A GB690094 A GB 690094A GB 27502/48 A GB27502/48 A GB 27502/48A GB 2750248 A GB2750248 A GB 2750248A GB 690094 A GB690094 A GB 690094A
Authority
GB
United Kingdom
Prior art keywords
developer
stabilized
pile
silver nitrate
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
Application number
GB27502/48A
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 GB690094A publication Critical patent/GB690094A/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
    • G03C1/62—Metal compounds reducible to metal
    • 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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/58—Processes for obtaining metallic images by vapour deposition or physical development

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

690,094. Physical development processes. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Oct. 22, 1948 [Oct. 27, 1947], No. 27502/48. Class 98 (ii). Metal images are produced by physical development of exposed sheet material by piling it in a bath containing a stabilized physical developer, i.e. one having a keeping time of longer than 15 minutes, containing not more than twice the quantity of metal sufficient to fully develop the exposed material placed in it. If the support of the photographic material readily absorbs the developer the pile of sheets may be placed in it as a whole but if it does not the pile is either built up in the developer or a wetting agent is introduced into the developer. To hasten development the top sheet of the pile may be illuminated with infra-red and then removed so as to permit illumination of the next sheet. The physical developers used are stabilized by acidifying to a pH less than 1, cooling to below 10‹ C., or dilution so that the concentration of the reducing agent is not more than 0.01 gram-molecule per litre. For example a pile of exposed regenerated cellulose or unsized paper sheets sensitized with 1-hydroxy 2-diazonium 6-methyl benzene 4-sulphonic acid, mercurous nitrate and nitric acid are placed as a whole in a metol-tartaric acid-silver nitrate developer stabilized by dilution, a metol-silver nitrate developer stabilized with nitric acid, or a hydroquinone-tartaric acid-silver nitrate developer, to which glycerol is added to prevent freezing, cooled to below - 3 ‹ C. The developers stabilized with acid or by cooling may contain excess reducing agent and may be regenerated by addition of silver nitrate, while those stabilized by dilution contain less than 0.01 gram molecules per litre of reducing agent. Specifications 253,380, [Class 98 (ii)], 439,005, and 545,901 are referred to.
GB27502/48A 1947-10-27 1948-10-22 Improvements in or relating to methods of producing photographic developed images consisting of metal Expired GB690094A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL690094X 1947-10-27

Publications (1)

Publication Number Publication Date
GB690094A true GB690094A (en) 1953-04-15

Family

ID=19805915

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27502/48A Expired GB690094A (en) 1947-10-27 1948-10-22 Improvements in or relating to methods of producing photographic developed images consisting of metal

Country Status (6)

Country Link
US (1) US2609295A (en)
BE (1) BE485480A (en)
DE (1) DE810109C (en)
FR (1) FR974303A (en)
GB (1) GB690094A (en)
NL (1) NL70094C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL299034A (en) * 1963-10-09

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE369146C (en) * 1920-10-13 1923-02-15 Guido Anschuetz Apparatus for processing an exposed photographic plate in daylight including cassette filling using conventional metal cassettes
BE407603A (en) * 1930-02-05
BE413072A (en) * 1934-12-31
FR814449A (en) * 1935-12-12 1937-06-23 Ig Farbenindustrie Ag Process for the rapid development of photographic records
BE429591A (en) * 1937-08-09
US2230977A (en) * 1940-04-04 1941-02-04 American Cyanamid Co Single solution photographic developing and fixing bath

Also Published As

Publication number Publication date
DE810109C (en) 1951-08-06
US2609295A (en) 1952-09-02
FR974303A (en) 1951-02-21
BE485480A (en)
NL70094C (en)

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