GB814154A - A process and material for the direct production of positives by the silver salt diffusion process - Google Patents

A process and material for the direct production of positives by the silver salt diffusion process

Info

Publication number
GB814154A
GB814154A GB18212/57A GB1821257A GB814154A GB 814154 A GB814154 A GB 814154A GB 18212/57 A GB18212/57 A GB 18212/57A GB 1821257 A GB1821257 A GB 1821257A GB 814154 A GB814154 A GB 814154A
Authority
GB
United Kingdom
Prior art keywords
starch
transfer layer
layer
transfer
layers
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
GB18212/57A
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 GB814154A publication Critical patent/GB814154A/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
    • G03C8/26—Image-receiving layers
    • G03C8/28—Image-receiving layers containing development nuclei or compounds forming such nuclei

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Paper (AREA)
  • Duplication Or Marking (AREA)

Abstract

814,154. Photographic silver salt diffusion-transfer process and transfer material therefor. AGFA A. G. June 7, 1957 [June 9, 1956], No. 18212/57. Class 98(2) A starch ether or a gallactomannan is used as a binding agent for at least the transfer layer to facilitate separation of the layers after image transfer. Examples specify (1) a gelatino silver chloride emulsion for the negative layer and starch methyl ether containing silver sulphide, hypo and saponin for the transfer layer; processing is effected with aqueous pmethylaminophenol sulphate, hydroqinone, potassium bromide and caustic soda, and the layers are dried over a heated roll before separation. (2) Addition of a proportion of sodium carboxymethyl cellulose to the negative layer, transfer layer and processing being the same as in Example 1 except that separation is effected after drying at normal temperature. (3) Addition of starch to the negative layer of Example 1 and the use of starch hydroxyethyl ether with a proportion of gelatin as binding agent for the transfer layer; processing includes passage over a heated roll with the transfer layer adjacent thereto. (4) Guar gum, silver sulphide, hypo and a wetting agent on a paper support for the transfer layer. Other starch ethers, and locust bean gum as a further galactomannan, and other nuclei, are quoted for use in the transfer layer. Either or both of the layers may contain small proportions of other colloids. The negative layer may include a matting agent such as starch, ethyl cellulose, barium sulphate or titanium dioxide. Specification 687,751 is referred to.
GB18212/57A 1956-06-09 1957-06-07 A process and material for the direct production of positives by the silver salt diffusion process Expired GB814154A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA25069A DE1013965B (en) 1956-06-09 1956-06-09 Process for making direct positives using the silver salt diffusion process

Publications (1)

Publication Number Publication Date
GB814154A true GB814154A (en) 1959-05-27

Family

ID=6925829

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18212/57A Expired GB814154A (en) 1956-06-09 1957-06-07 A process and material for the direct production of positives by the silver salt diffusion process

Country Status (6)

Country Link
US (1) US3043691A (en)
BE (1) BE558193A (en)
CH (1) CH357631A (en)
DE (1) DE1013965B (en)
FR (1) FR1176554A (en)
GB (1) GB814154A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620728A (en) * 1969-04-03 1971-11-16 Eastman Kodak Co Receiving sheet for diffusion transfer processes

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB998955A (en) * 1960-10-20 1965-07-21 Gevaert Photo Prod Nv Silver salt diffusion transfer processes and materials for use therein
BE634189A (en) * 1960-11-16
NL275378A (en) * 1961-03-06
BE627760A (en) * 1962-01-31
US3203796A (en) * 1962-04-27 1965-08-31 Gevaert Photo Prod Nv Use of starch ether layers in diffusion transfer processes
US3152906A (en) * 1962-05-07 1964-10-13 Du Pont Gelatin silver halide compositions and elements containing a water-soluble hydroxyalkyl ether derivative of starch
DE1189382B (en) * 1963-12-27 1965-03-18 Agfa Ag Photographic material having at least one halide silver emulsion layer
US3369901A (en) * 1964-01-16 1968-02-20 Eastman Kodak Co Coating method for wash-off solvent transfer
JPS60170846A (en) * 1984-02-16 1985-09-04 Fuji Photo Film Co Ltd Silver salt diffusion transfer image receiving material

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2148951A (en) * 1937-04-15 1939-02-28 Du Pont Organic starch derivatives and process
US2409564A (en) * 1941-05-28 1946-10-15 Noc Mfg Company Di Transfer material
US2316128A (en) * 1942-02-21 1943-04-06 Rohm & Haas Water-soluble carboxyethyl starch ethers
US2698238A (en) * 1947-02-08 1954-12-28 Polaroid Corp Photographic product and process
BE500540A (en) * 1950-01-13
GB748892A (en) * 1953-03-25 1956-05-16 Ozalid Co Ltd Improvements in or relating to methods and materials for use in the migratory transfer of a photographic image
BE544850A (en) * 1955-02-07
US2834676A (en) * 1955-07-19 1958-05-13 Sperry Rand Corp Photographic diffusion transfer process for producing multiple direct positive copies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620728A (en) * 1969-04-03 1971-11-16 Eastman Kodak Co Receiving sheet for diffusion transfer processes

Also Published As

Publication number Publication date
FR1176554A (en) 1959-04-13
US3043691A (en) 1962-07-10
DE1013965B (en) 1957-08-14
CH357631A (en) 1961-10-15
BE558193A (en)

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