GB421636A - A method for producing photographic pictures of high brilliancy - Google Patents

A method for producing photographic pictures of high brilliancy

Info

Publication number
GB421636A
GB421636A GB14656/34A GB1465634A GB421636A GB 421636 A GB421636 A GB 421636A GB 14656/34 A GB14656/34 A GB 14656/34A GB 1465634 A GB1465634 A GB 1465634A GB 421636 A GB421636 A GB 421636A
Authority
GB
United Kingdom
Prior art keywords
acid
fixing
substances
developing
bath
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
GB14656/34A
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
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB421636A publication Critical patent/GB421636A/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
    • G03C5/38—Fixing; Developing-fixing; Hardening-fixing

Abstract

421,636. Treating photographic silver images. I. G. FARBENINDUSTRIE AKT.- GES., Frankfort-on-Main, Germany. May 15, 1934, No. 14656. Convention date, May 24, 1933. [Class 98 (ii)] Silver pictures of enhanced brilliance are produced by adding to the fixing bath, to the developer or to an intermediate bath between developing and fixing, one or more non-toning substances which form silver salts whose solubility in a 10 per cent solution of sodium thiosulphate does not exceed 500 milligrams per litre at 20‹ C. Suitable substances are lysalbinic acid, cystine, 4-ethylthiochlorobenzoic acid, 4: 4<1>-diaminothiophenyl-5-sulphonic acid, thioaniline, 2: 2<1>-diaminodiphonyl disulphide, mercaptobenzthiazole, dithiocarbanilic acid, dithioaldehyde sulphocyanide, and dicyandiamide. Examples of the addition of these substances to fixing and developing baths are given.
GB14656/34A 1933-05-24 1934-05-15 A method for producing photographic pictures of high brilliancy Expired GB421636A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI0047278 1933-05-24

Publications (1)

Publication Number Publication Date
GB421636A true GB421636A (en) 1934-12-27

Family

ID=7191958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14656/34A Expired GB421636A (en) 1933-05-24 1934-05-15 A method for producing photographic pictures of high brilliancy

Country Status (5)

Country Link
US (1) US2124159A (en)
BE (1) BE403307A (en)
FR (1) FR773354A (en)
GB (1) GB421636A (en)
NL (1) NL55621C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432506A (en) * 1943-11-26 1947-12-16 Ilford Ltd Treatment of developed silver images with mercapto-tetrazole and triazole compounds

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB571174A (en) * 1944-02-03 1945-08-09 Douglas James Fry Improvements in or relating to the production of photographic light-sensitive emulsions
FR964821A (en) * 1946-04-05 1950-08-25
US2465149A (en) * 1946-04-25 1949-03-22 Gen Aniline & Film Corp Tetrazolyl disulfides as stabilizing agents for silver-halide emulsions
BE476658A (en) * 1946-06-20
GB615880A (en) * 1946-08-20 1949-01-12 John David Kendall Improvements in or relating to silver halide photographic emulsions
US2453087A (en) * 1946-11-07 1948-11-02 Gen Aniline & Film Corp Photographic developers containing tetrazolyl disulfides as antifogging agents
US2756145A (en) * 1953-12-31 1956-07-24 Eastman Kodak Co Silver halide emulsions containing a diamino diphenyl amine stabilizer
BE638633A (en) * 1962-10-18

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432506A (en) * 1943-11-26 1947-12-16 Ilford Ltd Treatment of developed silver images with mercapto-tetrazole and triazole compounds

Also Published As

Publication number Publication date
BE403307A (en)
FR773354A (en) 1934-11-16
NL55621C (en)
US2124159A (en) 1938-07-19

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