GB942034A - Development of photographic silver halide layers - Google Patents

Development of photographic silver halide layers

Info

Publication number
GB942034A
GB942034A GB28455/59A GB2845559A GB942034A GB 942034 A GB942034 A GB 942034A GB 28455/59 A GB28455/59 A GB 28455/59A GB 2845559 A GB2845559 A GB 2845559A GB 942034 A GB942034 A GB 942034A
Authority
GB
United Kingdom
Prior art keywords
development
electrolyte
silver halide
layer
hydroquinone
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
GB28455/59A
Inventor
Martin Hepher
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
Priority to GB28455/59A priority Critical patent/GB942034A/en
Priority to US35074A priority patent/US3113910A/en
Priority to FR836346A priority patent/FR1265682A/en
Publication of GB942034A publication Critical patent/GB942034A/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
    • G03C5/263—Processes using silver-salt-containing photosensitive materials or agents therefor with an exterior influence, e.g. ultrasonics, electrical or thermal means

Landscapes

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

Abstract

942,034. Photographic development. KODAK Ltd. Aug. 11, 1960 [Aug. 20, 1959], No. 28455/59. Heading G2C. An exposed photographic silver halide emulsion layer is developed in a moist or wet condition and in the presence of an electrolyte and an organic developing agent by contacting it with a cathode, the anode being at the back of the material, and passing a current through the material to raise the #H of the layer sufficiently to cause development to take place. The anode may be a metal plate, or the material to be developed may be passed through stainless steel rollers between which a direct potential is applied. Development is arrested by reversing the current. The electrolyte may be an alkali metal sulphite, bisulphite, chlorate, chloride, sulphate or bisulphiteformaldehyde complex. The developing agent may be hydroquinone, p-methylphenyl-hydroquinone, catechol, 4-phenyl catechol, 4-methoxy-1-naphthol, metol or 1-phenyl-3-pyrazolidone. The developer and/or electrolyte may be in the emulsion layer, or they may be in the solution used for moistening the exposed layer. Specification 937,494 is referred to.
GB28455/59A 1959-08-20 1959-08-20 Development of photographic silver halide layers Expired GB942034A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB28455/59A GB942034A (en) 1959-08-20 1959-08-20 Development of photographic silver halide layers
US35074A US3113910A (en) 1959-08-20 1960-06-09 Process for electro-development of photographic images
FR836346A FR1265682A (en) 1959-08-20 1960-08-20 New process for developing photographic images

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB28455/59A GB942034A (en) 1959-08-20 1959-08-20 Development of photographic silver halide layers
US35074A US3113910A (en) 1959-08-20 1960-06-09 Process for electro-development of photographic images

Publications (1)

Publication Number Publication Date
GB942034A true GB942034A (en) 1963-11-20

Family

ID=26259386

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28455/59A Expired GB942034A (en) 1959-08-20 1959-08-20 Development of photographic silver halide layers

Country Status (2)

Country Link
US (1) US3113910A (en)
GB (1) GB942034A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0708363A1 (en) * 1994-10-21 1996-04-24 Kodak Limited Method and apparatus for altering the pH of a photographic developing solution

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3409516A (en) * 1963-06-11 1968-11-05 Milton Alden Electrolytic recording paper containing a sequestering agent
US3349013A (en) * 1964-01-22 1967-10-24 Stewart Warner Corp Electrolytic recording process and materials
US3332857A (en) * 1964-03-31 1967-07-25 Hogan Faximile Corp Electrolytic recording medium
US3402109A (en) * 1966-12-12 1968-09-17 Hogan Faximile Corp Electrolytic recording medium
US4017366A (en) * 1974-03-25 1977-04-12 Ing. C. Olivetti & C., S.P.A. Thermographic printing method
US20060068024A1 (en) * 2004-09-27 2006-03-30 Schroeder Kurt M Antimicrobial silver halide composition
CN113390911B (en) * 2021-05-26 2023-02-07 中国工程物理研究院材料研究所 Extracting corrosive agent and extracting method for beryllium phase three-dimensional microscopic morphology of beryllium-aluminum alloy

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US670510A (en) * 1898-06-18 1901-03-26 Electrical Inkless Printing Syndicate Ltd Process of printing and product thereof.
BE519520A (en) * 1952-05-03
US2901350A (en) * 1954-10-12 1959-08-25 Goldhammer Jerome Stewart Combined developers and fixers
GB786496A (en) * 1956-12-20 1957-11-20 Muirhead & Co Ltd Improvements in or relating to electrolytic recording media
US2927834A (en) * 1957-10-18 1960-03-08 Ibm Recording device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0708363A1 (en) * 1994-10-21 1996-04-24 Kodak Limited Method and apparatus for altering the pH of a photographic developing solution

Also Published As

Publication number Publication date
US3113910A (en) 1963-12-10

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