GB1061047A - Processes of photographic reproduction - Google Patents

Processes of photographic reproduction

Info

Publication number
GB1061047A
GB1061047A GB49088/63A GB4908863A GB1061047A GB 1061047 A GB1061047 A GB 1061047A GB 49088/63 A GB49088/63 A GB 49088/63A GB 4908863 A GB4908863 A GB 4908863A GB 1061047 A GB1061047 A GB 1061047A
Authority
GB
United Kingdom
Prior art keywords
layer
emulsion layer
dec
developing
activator solution
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
GB49088/63A
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
Publication of GB1061047A publication Critical patent/GB1061047A/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
    • G03C5/29—Development processes or agents therefor
    • G03C5/315—Tanning development

Landscapes

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

Abstract

1,061,047. Colloid transfer process. EASTMAN KODAK CO. Dec. 12, 1963 [Dec. 17, 1962], No. 49088/63. Heading G2C. Photographic images are obtained by exposing to a two-tone subject a substantially unhardened gelatino-silver halide emulsion layer, developing the exposed emulsion layer by means of an aqueous activator solution containing potassium carbonate and guanidine carbonate in the presence of both a tanning developing agent and a substantially non- tanning developing agent so as to develop a silver image in hardened gelatine in the highlight regions of the layer and also a silver image is substantially unhardened gelatine in the shadow regions of the layer, and transferring in the presence of moisture at least a thin stratum of the shadow regions of the layer to a support such as an absorbent paper support. 4-phenylcatechol and 4-methoxy-alphanaphthol may be used as the respective developing agents and may both be present in the emulsion layer. The activator solution may contain a sequestering agent e.g. ethylene diamine tetraacetic acid di, tri- or tetrasodium salt.
GB49088/63A 1962-12-17 1963-12-12 Processes of photographic reproduction Expired GB1061047A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US244899A US3232757A (en) 1962-12-17 1962-12-17 Photographic colloid transfer process

Publications (1)

Publication Number Publication Date
GB1061047A true GB1061047A (en) 1967-03-08

Family

ID=22924546

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49088/63A Expired GB1061047A (en) 1962-12-17 1963-12-12 Processes of photographic reproduction

Country Status (5)

Country Link
US (1) US3232757A (en)
BE (1) BE641287A (en)
DE (1) DE1173800B (en)
FR (1) FR1377761A (en)
GB (1) GB1061047A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4840929A (en) * 1987-07-02 1989-06-20 Mobil Oil Corporation Zeolite beta with improved regeneration characteristics

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2165797A (en) * 1938-07-13 1939-07-11 American Cyanamid Co Photographic developer
BE590252A (en) * 1959-05-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4840929A (en) * 1987-07-02 1989-06-20 Mobil Oil Corporation Zeolite beta with improved regeneration characteristics

Also Published As

Publication number Publication date
FR1377761A (en) 1964-11-06
DE1173800B (en) 1964-07-09
BE641287A (en) 1964-04-01
US3232757A (en) 1966-02-01

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