GB547975A - Improvements in photographic processing solutions - Google Patents

Improvements in photographic processing solutions

Info

Publication number
GB547975A
GB547975A GB646/41A GB64641A GB547975A GB 547975 A GB547975 A GB 547975A GB 646/41 A GB646/41 A GB 646/41A GB 64641 A GB64641 A GB 64641A GB 547975 A GB547975 A GB 547975A
Authority
GB
United Kingdom
Prior art keywords
alcohol
bath
water
silver
dye
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
GB646/41A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to GB646/41A priority Critical patent/GB547975A/en
Priority to US421042A priority patent/US2378265A/en
Publication of GB547975A publication Critical patent/GB547975A/en
Priority to FR951529D priority patent/FR951529A/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
    • G03C5/40—Chemically transforming developed images
    • G03C5/44—Bleaching; Bleach-fixing

Abstract

547,975. Photographic processing solutions. KODAK, Ltd. (Eastman Kodak Co.). Jan. 17, 1941, No. 646. [Class 98 (ii)] A photographic silver oxidizing bath includes, in addition to the silver oxidizing agent, a monohydroxy alcohol or an aliphatic ketone. Metallic silver may be converted into a silver salt in an emulsion in which a dye image has been formed from a dye, dye-derivative, or dye-forming substance, such as a colour coupler, present in the emulsion in association with a water-insoluble water-permeable substance by subjecting the emulsion to the action of a silver-removing bath containing an oxidizing agent and a watermiscible organic solvent for the water-insoluble water-permeable substance. The silver salt produced may be removed in a fixing bath, which may contain an organic solvent of the kind specified. The oxidizing bath may also contain the fixing agent. The organic solvent may be benzyl alcohol, acetone, isopropyl alcohol, #- phenylethyl alcohol, α-phenyl-n-propyl alcohol, - diethylaminoethyl alcohol, #- and α- diethylaminopropyl alcohol, furfuryl alcohol, tetrahydrofurfuryl alcohol, and methyl ethyl ketone. Acetone may be used in an acid dichromate bleach bath. and benzyl alcohol in a potassium ferricyanide bleach bath. In example (1), the bleach bath contains chromic acid, hydrobromic acid, potassium bromide, acetone, and water, and in example (2) potassium ferricyanide, ammonium hydroxide, potassium bromide, benzyl alcohol, and water. Specifications 477,524, 503,752, 507,841, 524,154, 524,554, 524,555, 537,256, 540,366, 540,525, and 541,589 are referred to.
GB646/41A 1941-01-17 1941-01-17 Improvements in photographic processing solutions Expired GB547975A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB646/41A GB547975A (en) 1941-01-17 1941-01-17 Improvements in photographic processing solutions
US421042A US2378265A (en) 1941-01-17 1941-11-29 Color photography
FR951529D FR951529A (en) 1941-01-17 1946-09-30 Improvements to photographic processing baths

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB646/41A GB547975A (en) 1941-01-17 1941-01-17 Improvements in photographic processing solutions

Publications (1)

Publication Number Publication Date
GB547975A true GB547975A (en) 1942-09-21

Family

ID=9708001

Family Applications (1)

Application Number Title Priority Date Filing Date
GB646/41A Expired GB547975A (en) 1941-01-17 1941-01-17 Improvements in photographic processing solutions

Country Status (3)

Country Link
US (1) US2378265A (en)
FR (1) FR951529A (en)
GB (1) GB547975A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5666727A (en) * 1995-02-17 1997-09-16 General Motors Corporation Method of manufacturing a passenger compartment from a cylindrical tube

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476544A (en) * 1944-11-17 1949-07-19 Gen Aniline & Film Corp Antistain agents for silver bleach solutions
US2428208A (en) * 1945-06-20 1947-09-30 Eastman Kodak Co Dichromate bleach bath containing a wetting agent and method of bleaching therewith
US2440954A (en) * 1945-08-23 1948-05-04 Du Pont Process for eliminating stain from color-yielding elements by treatment with aromatic aldehydes containing an acyl group
US2518686A (en) * 1945-11-08 1950-08-15 Gen Aniline & Film Corp Aldehyde antistain baths for developed color photographic material
FR2978622B1 (en) 2011-07-25 2013-08-09 Renault Sa SYSTEM FOR MONITORING A CURRENT RECTIFIER FOR CHARGING A BATTERY OF AN ELECTRIC MOTOR VEHICLE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5666727A (en) * 1995-02-17 1997-09-16 General Motors Corporation Method of manufacturing a passenger compartment from a cylindrical tube

Also Published As

Publication number Publication date
US2378265A (en) 1945-06-12
FR951529A (en) 1949-10-27

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