GB443295A - Improvements relating to the rapid development of photographic films - Google Patents

Improvements relating to the rapid development of photographic films

Info

Publication number
GB443295A
GB443295A GB24540/34A GB2454034A GB443295A GB 443295 A GB443295 A GB 443295A GB 24540/34 A GB24540/34 A GB 24540/34A GB 2454034 A GB2454034 A GB 2454034A GB 443295 A GB443295 A GB 443295A
Authority
GB
United Kingdom
Prior art keywords
rapid development
temperature
baths
improvements relating
photographic films
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
GB24540/34A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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
Priority to DEI50089D priority Critical patent/DE681330C/en
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB24540/34A priority patent/GB443295A/en
Priority to FR791744D priority patent/FR791744A/en
Publication of GB443295A publication Critical patent/GB443295A/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
    • G03C5/50—Reversal development; Contact processes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D11/00—Reversal processing 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
    • G03D3/00—Liquid processing apparatus involving immersion; Washing apparatus involving immersion
    • 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
    • G03C2200/00—Details
    • G03C2200/52—Rapid processing
    • 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
    • G03C2200/00—Details
    • G03C2200/60—Temperature
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

443,295. Photographic reversal processes, GROVES, W. W., 30, Southampton Buildings, Chancery Lane, London.-(I. G. Farbenindustrie Akt.-Ges. ; Frankfort-on-Main, Germany) Aug. 25, 1934, No. 24540. [Class 98 (ii)] In a photographic reversal process all the treating baths are used at a temperature of from 30-70‹ C., so that little or no blackening due to fog is produced. The temperature of the baths may be 40‹ C. The first developer may contain potassium thiocyanate. The reversing bath may comprise potassium dichromate and sulphuric acid, and may be followed by a clearing bath containing sodium sulphite. The process may be applied for the rapid development of television intermediate films and of sound records, particularly those of the variable-area type.
GB24540/34A 1934-07-06 1934-08-25 Improvements relating to the rapid development of photographic films Expired GB443295A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DEI50089D DE681330C (en) 1934-07-06 1934-07-07 Process for the rapid development of photographic films with hot treatment baths to eliminate veil blackening
GB24540/34A GB443295A (en) 1934-07-06 1934-08-25 Improvements relating to the rapid development of photographic films
FR791744D FR791744A (en) 1934-07-06 1935-06-26 Rapid development process for photographic films, avoiding haze blackening

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEI0050089 1934-07-06
GB24540/34A GB443295A (en) 1934-07-06 1934-08-25 Improvements relating to the rapid development of photographic films

Publications (1)

Publication Number Publication Date
GB443295A true GB443295A (en) 1936-02-25

Family

ID=25981805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24540/34A Expired GB443295A (en) 1934-07-06 1934-08-25 Improvements relating to the rapid development of photographic films

Country Status (2)

Country Link
FR (1) FR791744A (en)
GB (1) GB443295A (en)

Also Published As

Publication number Publication date
FR791744A (en) 1935-12-16

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