GB451030A - Improvements in photographic developers - Google Patents

Improvements in photographic developers

Info

Publication number
GB451030A
GB451030A GB2766/35A GB276635A GB451030A GB 451030 A GB451030 A GB 451030A GB 2766/35 A GB2766/35 A GB 2766/35A GB 276635 A GB276635 A GB 276635A GB 451030 A GB451030 A GB 451030A
Authority
GB
United Kingdom
Prior art keywords
ethylene diamine
bromide
potassium
metol
hydroquinone
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
GB2766/35A
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.)
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
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB451030A publication Critical patent/GB451030A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
GB2766/35A 1934-10-27 1935-01-28 Improvements in photographic developers Expired GB451030A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2124608X 1934-10-27

Publications (1)

Publication Number Publication Date
GB451030A true GB451030A (en) 1936-07-28

Family

ID=32044201

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2766/35A Expired GB451030A (en) 1934-10-27 1935-01-28 Improvements in photographic developers

Country Status (5)

Country Link
US (1) US2124608A (fr)
BE (1) BE411667A (fr)
ES (1) ES139752A1 (fr)
FR (1) FR796015A (fr)
GB (1) GB451030A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB565146A (en) * 1943-06-23 1944-10-27 Eastman Kodak Co Improvements relating to photographic fixing solutions
US2466423A (en) * 1945-05-11 1949-04-05 Eastman Kodak Co Fine-grain developers
US2657138A (en) * 1950-01-03 1953-10-27 Leonard A Robbins Photographic film developing composition containing beta, beta'-di-chloroethyl ether

Also Published As

Publication number Publication date
FR796015A (fr) 1936-03-27
ES139752A1 (es) 1935-12-01
US2124608A (en) 1938-07-26
BE411667A (fr) 1935-11-30

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