GB898328A - Improvements in photographic processing baths - Google Patents

Improvements in photographic processing baths

Info

Publication number
GB898328A
GB898328A GB30769/58A GB3076958A GB898328A GB 898328 A GB898328 A GB 898328A GB 30769/58 A GB30769/58 A GB 30769/58A GB 3076958 A GB3076958 A GB 3076958A GB 898328 A GB898328 A GB 898328A
Authority
GB
United Kingdom
Prior art keywords
monothioglycerol
mercaptoethylamine
sept
pyrazolidone
sodium hydroxide
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
GB30769/58A
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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB898328A publication Critical patent/GB898328A/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
    • G03C5/383—Developing-fixing, i.e. mono-baths

Landscapes

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

Abstract

898,328. Photographic developing and stabilizing compositions. KODAK Ltd. Sept. 26, 1958 [Sept. 30, 1957], No. 30769/58. Class 98(2). A photographic developing composition producing stable silver images without fixing and washing, especially for print-out and direct positive materials, comprises an aqueous alkaline solution of a hydroxylamine or a 3-pyrazolidone developing agent and one of the compounds monothioglycerol, thioglycol, B-mercaptoethylamine, N: N-diethyl-B-mercaptoethylamine and 2-thiobarbituric acid. In Example 1 specified proportions of 1-phenyl-3-pyrazolidone, sodium sulphite, sodium carbonate, sodium hydroxide, 1-ascorbic acid and monothioglycerol provide a formula for processing time of 30 to 90 seconds with direct positive paper to give prints unaffected on exposure to ultraviolet radiation. Example 2 specifies hydroxylamine hydrochloride, monothioglycerol, sodium hydroxide and 5-methyl benzotriazole for similar use, and this composition may be applied to an unexposed emulsion layer for a few seconds immediately before exposure for stable print production without subsequent treatment. Examples 3-7 are generally similar. 26 of the pyrazolidones are listed. Specifications 631,184 and 693,632 are referred to. Reference has been directed by the Comptroller to Specification 542,502.
GB30769/58A 1957-09-30 1958-09-26 Improvements in photographic processing baths Expired GB898328A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US686898A US2875048A (en) 1957-09-30 1957-09-30 Combined photographic developing and stabilizing solution

Publications (1)

Publication Number Publication Date
GB898328A true GB898328A (en) 1962-06-06

Family

ID=24758187

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30769/58A Expired GB898328A (en) 1957-09-30 1958-09-26 Improvements in photographic processing baths

Country Status (3)

Country Link
US (1) US2875048A (en)
FR (1) FR1212279A (en)
GB (1) GB898328A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150340241A1 (en) * 2013-01-15 2015-11-26 Mitsubishi Gas Chemical Company, Inc. Silicon etching liquid, silicon etching method, and microelectromechanical element

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050392A (en) * 1958-08-01 1962-08-21 Mergenthaler Linotype Gmbh Oxidation-stable developer compositions
US3252797A (en) * 1961-11-16 1966-05-24 Chicago Aerial Ind Inc Simultaneously developing and fixing photographic images
US3326684A (en) * 1962-04-06 1967-06-20 Fuji Photo Film Co Ltd Method for stabilizing developed photosensitive materials
US3253923A (en) * 1962-08-31 1966-05-31 Eastman Kodak Co Process for intensifying and fixing print-out images
GB1052446A (en) * 1962-09-13
US3542554A (en) * 1967-11-30 1970-11-24 Eastman Kodak Co Mercapto-substituted hydroquinone developing agents
US3628955A (en) * 1968-02-27 1971-12-21 Eastman Kodak Co Inhibition of silvering in photographic solutions
US4272632A (en) * 1979-10-01 1981-06-09 Polaroid Corporation Novel silver complexing agents
US4251617A (en) * 1979-10-01 1981-02-17 Polaroid Corporation Novel silver complexing agents
CA2202017A1 (en) * 1996-05-22 1997-11-22 Alfred J. Alton Photothermographic and thermographic films containing low levels of formate to prevent fog
US6040130A (en) * 1997-02-10 2000-03-21 Eastman Kodak Company Photothermographic and thermographic films containing low levels of unsaturated fatty acid to prevent fog

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB573105A (en) * 1943-11-26 1945-11-06 Leonard Vincent Chilton Improvements in or relating to photographic materials
US2453346A (en) * 1945-10-25 1948-11-09 Eastman Kodak Co Stabilization of processed photographic emulsions to high temperatures and humidities
US2688548A (en) * 1953-08-03 1954-09-07 Eastman Kodak Co Photographic developer composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150340241A1 (en) * 2013-01-15 2015-11-26 Mitsubishi Gas Chemical Company, Inc. Silicon etching liquid, silicon etching method, and microelectromechanical element
US9875904B2 (en) * 2013-01-15 2018-01-23 Mitsubishi Gas Chemical Company, Inc. Silicon etching liquid, silicon etching method, and microelectromechanical element

Also Published As

Publication number Publication date
FR1212279A (en) 1960-03-23
US2875048A (en) 1959-02-24

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