GB972954A - Improved direct positives produced by the silver salt diffusion process - Google Patents

Improved direct positives produced by the silver salt diffusion process

Info

Publication number
GB972954A
GB972954A GB9394/63A GB939463A GB972954A GB 972954 A GB972954 A GB 972954A GB 9394/63 A GB9394/63 A GB 9394/63A GB 939463 A GB939463 A GB 939463A GB 972954 A GB972954 A GB 972954A
Authority
GB
United Kingdom
Prior art keywords
diffusion process
silver salt
salt diffusion
gelatine
march
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
GB9394/63A
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.)
Agfa Gevaert NV
Original Assignee
Agfa AG
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 Agfa AG filed Critical Agfa AG
Publication of GB972954A publication Critical patent/GB972954A/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
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/24—Photosensitive materials characterised by the image-receiving section
    • G03C8/243—Toners for the silver image

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

972, 954. Photographic silver salt diffusion process. AGFA A.G. March 8, 1963 [March 10, 1962], No. 9394/63. Heading G2C. Improved image tones are obtained in the silver salt diffusion process if the developer or receiving layer contains a compound of the general f ormula: - wherein R, and R2 are hydrogen atoms or alkyl, cycloalkyl, alkenyl or aryl groups. In the examples the compound is added to a hydroquinone/1-phenyl- 3-pyrazolidone developer solution or included in the receiving sheet either in a sodium alginate layer coated over a gelatine layer containing silver sulphide nuclei, or in a layer containing such nuclei, together with sodium thiosulphate and a binder of gelatine, or of polyvinyl alcohol mixed with sodium alginate or with gelatine and the propylene glycol ester of alginic acid.
GB9394/63A 1962-03-10 1963-03-08 Improved direct positives produced by the silver salt diffusion process Expired GB972954A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA39676A DE1153247B (en) 1962-03-10 1962-03-10 Process for the accelerated production of direct positives using the silver salt diffusion process

Publications (1)

Publication Number Publication Date
GB972954A true GB972954A (en) 1964-10-21

Family

ID=6931513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9394/63A Expired GB972954A (en) 1962-03-10 1963-03-08 Improved direct positives produced by the silver salt diffusion process

Country Status (5)

Country Link
US (1) US3307944A (en)
BE (1) BE629344A (en)
CH (1) CH446889A (en)
DE (1) DE1153247B (en)
GB (1) GB972954A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872143A (en) 1981-10-26 1983-04-30 Mitsubishi Paper Mills Ltd Developer for diffusion transfer of silver complex salt
JPH0612429B2 (en) * 1983-04-20 1994-02-16 富士写真フイルム株式会社 Image forming method for silver salt diffusion transfer
US4624995A (en) * 1985-04-09 1986-11-25 Minnesota Mining And Manufacturing Company Triazolinethione-containing polymer
US4740568A (en) * 1985-04-09 1988-04-26 Minnesota Mining And Manufacturing Company Triazolinethione-containing polymer
EP0218752A1 (en) * 1985-10-10 1987-04-22 Agfa-Gevaert N.V. Silver complex diffusion transfer reversal process

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
BE502525A (en) * 1950-04-15
DE1070029B (en) * 1958-03-31 1959-11-26

Also Published As

Publication number Publication date
US3307944A (en) 1967-03-07
DE1153247B (en) 1963-08-22
BE629344A (en)
CH446889A (en) 1967-11-15

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