GB871684A - A silver halide photographic developer - Google Patents

A silver halide photographic developer

Info

Publication number
GB871684A
GB871684A GB1593859A GB1593859A GB871684A GB 871684 A GB871684 A GB 871684A GB 1593859 A GB1593859 A GB 1593859A GB 1593859 A GB1593859 A GB 1593859A GB 871684 A GB871684 A GB 871684A
Authority
GB
United Kingdom
Prior art keywords
amino
silver halide
pyrazolone
halide photographic
photographic developer
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
GB1593859A
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.)
Agfa Gevaert NV
Original Assignee
Agfa 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 Agfa AG filed Critical Agfa AG
Publication of GB871684A publication Critical patent/GB871684A/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
    • G03C5/29—Development processes or agents therefor
    • G03C5/30—Developers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

871,684. Photographic developers. AGFA A. G. May 8, 1959 [May 10, 1958], No. 15938/59. Class 98(2) A photographic silver halide developer solution comprises a 4-amino-5-pyrazolone, hydroquinone and either 1-phenyl-3-pyrazolidone or 1-(p-aminophenyl)-3-amino-pyrazoline. The 4-amino-5-pyrazolone may be one of those disclosed in Specification 765,286, especially 1-phenyl- 4-amino- 5-pyrazolone- 3- carboxylic acid and its amides and esters. In the examples, the developer solutions contain also sodium sulphite, sodium carbonate and sodium hexametaphosphate.
GB1593859A 1958-05-10 1959-05-08 A silver halide photographic developer Expired GB871684A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA29466A DE1079455B (en) 1958-05-10 1958-05-10 Photographic developer containing 4-amino-5-pyrazolone compounds and hydroquinone

Publications (1)

Publication Number Publication Date
GB871684A true GB871684A (en) 1961-06-28

Family

ID=6926934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1593859A Expired GB871684A (en) 1958-05-10 1959-05-08 A silver halide photographic developer

Country Status (5)

Country Link
BE (1) BE578539A (en)
CH (1) CH379921A (en)
DE (1) DE1079455B (en)
FR (1) FR1223865A (en)
GB (1) GB871684A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772019A (en) * 1972-05-19 1973-11-13 H & W Co Inc St Johnsbury Novel developer and process

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE955025C (en) * 1954-03-15 1956-12-27 Agfa Aktiengesellschft Fuer Ph Photographic developer
DE1024798B (en) * 1956-08-16 1958-02-20 Leonar Werke Ag Fixing developer for the rapid development of photographic layers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772019A (en) * 1972-05-19 1973-11-13 H & W Co Inc St Johnsbury Novel developer and process

Also Published As

Publication number Publication date
FR1223865A (en) 1960-06-21
BE578539A (en)
CH379921A (en) 1964-07-15
DE1079455B (en) 1960-04-07

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