GB1229077A - - Google Patents

Info

Publication number
GB1229077A
GB1229077A GB1229077DA GB1229077A GB 1229077 A GB1229077 A GB 1229077A GB 1229077D A GB1229077D A GB 1229077DA GB 1229077 A GB1229077 A GB 1229077A
Authority
GB
United Kingdom
Prior art keywords
water
soluble
iodine
dec
sulphur
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
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 filed Critical
Publication of GB1229077A publication Critical patent/GB1229077A/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
    • G03C5/395—Regeneration of photographic processing agents other than developers; Replenishers therefor
    • G03C5/3952—Chemical, mechanical or thermal methods, e.g. oxidation, precipitation, centrifugation

Abstract

1,229,077. Photographic bleach-fix solutions. EASTMAN KODAK CO. Dec. 12, 1969 [Dec. 13, 1968], No. 60786/69. Heading G2C. Photographic bleach/fix solutions are regenerated by the addition of iodine which oxidises the reduced oxident in a spent solution and precipitates the dissolved silver, which is removed. The iodine maybe added in solid, liquid or gaseous form in an amount up to 1À2g per g. of silver in solution. Suitable bleaches include those providing cupric, cobaltic or ferric ions, water-soluble quinones and complex salts of an alkali metal and a polyvalent cation with an organic acid having one of the formula: - wherein X represents a hydrocarbon residue, oxygen, sulphur or an MR<SP>12</SP> group. Suitable fixing agents are water-soluble sulphur-containing organic diols or dibasic acids, their water-soluble salts or an imidazolidinthione.
GB1229077D 1968-12-13 1969-12-12 Expired GB1229077A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78375068A 1968-12-13 1968-12-13

Publications (1)

Publication Number Publication Date
GB1229077A true GB1229077A (en) 1971-04-21

Family

ID=25130284

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1229077D Expired GB1229077A (en) 1968-12-13 1969-12-12

Country Status (6)

Country Link
US (1) US3615507A (en)
BE (1) BE742943A (en)
DE (1) DE1961997A1 (en)
FR (1) FR2026061A1 (en)
GB (1) GB1229077A (en)
SE (1) SE352967B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1269260A1 (en) * 2000-01-06 2003-01-02 Trebla Chemical Company One-part bleach-fix liquid concentrates

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2220667A1 (en) * 1972-04-27 1973-11-08 Agfa Gevaert Ag PROCESS FOR REGENERATING USED PHOTOGRAPHIC SILVER BLEACHING SOLUTIONS
US3772194A (en) * 1972-06-21 1973-11-13 Eastman Kodak Co Silver catalyzed oxidation of complex metal cyanides
GB1435900A (en) * 1972-10-04 1976-05-19 Agfa Gevaert Method for the preparation of planographic printing plates
EP0569008B1 (en) * 1992-05-08 1999-02-03 Eastman Kodak Company Acceleration of silver removal by thioether compounds
US5716766A (en) * 1995-05-18 1998-02-10 Fuji Photo Film Co., Ltd. Method and apparatus for the electrolytic treatment of bleach-fix baths, as well as an apparatus for processing photographic materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1269260A1 (en) * 2000-01-06 2003-01-02 Trebla Chemical Company One-part bleach-fix liquid concentrates
EP1269260A4 (en) * 2000-01-06 2003-06-25 Trebla Chemical Company One-part bleach-fix liquid concentrates

Also Published As

Publication number Publication date
SE352967B (en) 1973-01-15
DE1961997A1 (en) 1970-06-25
US3615507A (en) 1971-10-26
BE742943A (en) 1970-05-14
FR2026061A1 (en) 1970-09-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees