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GB893808A - Rapid photographic developing - Google Patents

Rapid photographic developing

Info

Publication number
GB893808A
GB893808A GB5232/60A GB523260A GB893808A GB 893808 A GB893808 A GB 893808A GB 5232/60 A GB5232/60 A GB 5232/60A GB 523260 A GB523260 A GB 523260A GB 893808 A GB893808 A GB 893808A
Authority
GB
United Kingdom
Prior art keywords
emulsion
solution
compound
developing
ammonium
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
GB5232/60A
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.)
Consolidated Electrodynamics Corp
Original Assignee
Consolidated Electrodynamics Corp
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 Consolidated Electrodynamics Corp filed Critical Consolidated Electrodynamics Corp
Publication of GB893808A publication Critical patent/GB893808A/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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/263—Processes using silver-salt-containing photosensitive materials or agents therefor with an exterior influence, e.g. ultrasonics, electrical or thermal means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/48—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus
    • G03B17/50—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus with both developing and finishing apparatus
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D15/00—Apparatus for treating processed material
    • G03D15/02—Drying; Glazing
    • G03D15/022—Drying of filmstrips
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D5/00—Liquid processing apparatus in which no immersion is effected; Washing apparatus in which no immersion is effected
    • G03D5/006—Liquid supply by means of a split or a capillarity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/164—Rapid access processing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

893,808. Photographic developing processes and apparatus. CONSOLIDATED ELECTRODYNAMICS CORPORATION. Feb. 15, 1960 [Feb. 17, 1959], No. 5232/60. Drawings to Specification. Classes 98(1) and 98(2). A method of rapidly developing a silver halide photosensitive emulsion with an alkaline developer solution containing a thermally unstable ammonium compound and/or a compound which produces an acid gas on heating comprises wetting the emulsion with a film of the developer solution and thereafter heating the wetted emulsion to decompose the ammonium compound and / or produce said acid gas in order to lower the pH of the solution on the emulsion, whereby the developing activity of the solution is decreased. Alternatively, if the alkaline developing solution contains a thermally unstable ammonium compound which decomposes at one temperature and the emulsion is disposed on a support containing or carrying a compound which produces an acid gas on heating to a higher temperature, the method may comprise wetting the emulsion with a film of the developer solution, thereafter heating the wetted emulsion to decompose the ammonium compound and lower the pH of the solution on the emulsion, whereby the developing activity of the solution is decreased, and thereafter heating the support sufficiently to decompose the acid-gas-producing compound. The developing solution may for example contain a mixture of Phenidone and chlorhydroquinone, and the thermally unstable alkali may comprise ammonium hydroxide, a mixture of a thermally stable alkali such as caustic soda or sodium carbonate and an ammonium compound such as ammonium chloride, or a substituted ammonium compound such as the quaternary ammonium hydroxides-for example tetraethyl ammonium hydroxide, tetramethyl ammonium hydroxide, and other in which the hydrogen atoms are replaced by various combinations of methyl, ethyl, butyl, and hexyl groups. The acid-gasproducing compound may comprise a sulphite, sulphate, or carbonate of zinc, tin, lead or mercury-preferably zinc sulphite-or a hydrochloride of a high molecular weight stable organic base such as cyclohexylamine hydrochloride or its higher homologues. The emulsion may, if desired, be wetted with developer before exposure, and if it is intended to keep the recorded information for future reference, the emulsion may later be fixed or stabilized in conventional manner. The Specification also describes and illustrates an apparatus in which a roll of photographic recording paper is fed past an exposure window, through a developing section in which a thin film of developer is applied to the paper, over a heating plate, and finally out of the apparatus for observation. Specification 888,700 and U.S.A. Specification 2,983,250 are referred to.
GB5232/60A 1959-02-17 1960-02-15 Rapid photographic developing Expired GB893808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US793727A US3088824A (en) 1959-02-17 1959-02-17 Rapid photographic developing

Publications (1)

Publication Number Publication Date
GB893808A true GB893808A (en) 1962-04-11

Family

ID=25160640

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5232/60A Expired GB893808A (en) 1959-02-17 1960-02-15 Rapid photographic developing

Country Status (3)

Country Link
US (1) US3088824A (en)
DE (1) DE1112404B (en)
GB (1) GB893808A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632341A (en) * 1970-03-13 1972-01-04 Itek Corp Photographic developer

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE628533A (en) * 1959-04-10
DE1157481B (en) * 1959-07-15
BE602625A (en) * 1960-04-14
US3177793A (en) * 1961-10-26 1965-04-13 Eastman Kodak Co Processor for photographic paper
US3225355A (en) * 1962-04-11 1965-12-21 Honeywell Inc Apparatus for recording
US3225354A (en) * 1962-04-11 1965-12-21 Honeywell Inc Apparatus for recording
US3184751A (en) * 1962-11-27 1965-05-18 Honeywell Inc Recorder
US3301678A (en) * 1964-05-28 1967-01-31 Eastman Kodak Co Process for stabilizing photographic images with heat
US3772019A (en) * 1972-05-19 1973-11-13 H & W Co Inc St Johnsbury Novel developer and process

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1819848A (en) * 1927-12-02 1931-08-18 Luther G Simjian Photographic developing apparatus
US2057764A (en) * 1933-07-22 1936-10-20 Agfa Ansco Corp Manufacture of stabilized silver halide emulsions
US2165797A (en) * 1938-07-13 1939-07-11 American Cyanamid Co Photographic developer
BE484329A (en) * 1947-11-19
GB647922A (en) * 1948-03-09 1950-12-28 Kodak Ltd Improvements in or relating to processing photographic light-sensitive material
US2922352A (en) * 1952-03-12 1960-01-26 Specialties Inc Rapid processing of photographic film
US2839405A (en) * 1955-03-08 1958-06-17 Eastman Kodak Co Inorganic salt antifoggants for photographic emulsions
US2930302A (en) * 1957-01-31 1960-03-29 Specialties Inc Processing of photographic film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632341A (en) * 1970-03-13 1972-01-04 Itek Corp Photographic developer

Also Published As

Publication number Publication date
DE1112404B (en) 1961-08-03
US3088824A (en) 1963-05-07

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