GB365317A - An improvement relating to photographic development - Google Patents

An improvement relating to photographic development

Info

Publication number
GB365317A
GB365317A GB117331A GB117331A GB365317A GB 365317 A GB365317 A GB 365317A GB 117331 A GB117331 A GB 117331A GB 117331 A GB117331 A GB 117331A GB 365317 A GB365317 A GB 365317A
Authority
GB
United Kingdom
Prior art keywords
sulphonic acid
sodium
developing
sulphonate
glycine
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
GB117331A
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 DE552434T priority Critical
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB365317A publication Critical patent/GB365317A/en
Application status is Expired legal-status Critical

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29Development processes or agents therefor
    • G03C5/305Additives other than developers
    • G03C5/3053Tensio-active agents or sequestering agents, e.g. water-softening or wetting agents

Abstract

365,317. Photographic developing processes. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. Jan. 13, 1931, No. 1173. Convention date, Jan. 13, 1930. [Class 98 (ii).] To avoid the production of air bubbles on the surface of plates, films, and papers during development, a castor oil sulphonic acid or the sulphonic acid of an alkylated or aralkylated aromatic compound or a salt thereof is added to the developing bath or to other baths, e.g. for desensitizing, or a pretreatment bath of the agent is used. Examples are given of developing baths comprising sodium di-butyl naphthalene - alpha - sulphonate, sodium sulphite, potassium carbonate and p-aminophenol or glycine, sodium benzyl-naphthalene-sulphonate, sodium sulphite, potassium carbonate and hydroxy-phenyl-glycine and of a pretreatment bath of castor oil sulphonic acid. The Specification as open to inspection under Sect. 91 (3) (a) also describes the use of pyridine. This subject-matter does not appear in the Specification as accepted.
GB117331A 1930-01-14 1931-01-13 An improvement relating to photographic development Expired GB365317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE552434T 1930-01-14

Publications (1)

Publication Number Publication Date
GB365317A true GB365317A (en) 1932-01-21

Family

ID=34484623

Family Applications (1)

Application Number Title Priority Date Filing Date
GB117331A Expired GB365317A (en) 1930-01-14 1931-01-13 An improvement relating to photographic development

Country Status (3)

Country Link
US (1) US2000353A (en)
DE (1) DE552434C (en)
GB (1) GB365317A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494765A (en) * 1944-11-10 1950-01-17 Keuffel & Esser Co Chemical erasing of photographic silver images
US2428208A (en) * 1945-06-20 1947-09-30 Eastman Kodak Co Dichromate bleach bath containing a wetting agent and method of bleaching therewith
BE476512A (en) * 1946-10-07
US2618558A (en) * 1949-04-12 1952-11-18 Eastman Kodak Co Photographic developers comprising an n,n - dialkyl-p-phenylenediamine and a benzenesulfonate
US2578075A (en) * 1949-06-18 1951-12-11 Keuffel & Esser Co Brownprint fixing composition containing alkali thiosulfate, alkali oxalate, and a surface active wetting agent
BE531104A (en) * 1953-08-26
NL232192A (en) * 1958-10-11
US3157502A (en) * 1958-10-11 1964-11-17 Philips Corp Stabilized physical developers containing ionogenic surfactants
JPH0477894B2 (en) * 1984-07-13 1992-12-09 Konishiroku Photo Ind
US5215873A (en) * 1989-11-21 1993-06-01 E. I. Du Pont De Nemours And Company Process for developing silver halide recording materials
DE3938573A1 (en) * 1989-11-21 1991-05-23 Du Pont Deutschland A method for developing photographic silver halide recording

Also Published As

Publication number Publication date
US2000353A (en) 1935-05-07
DE552434C (en) 1932-06-13

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