GB907146A - Improvements in photographic reproduction processes - Google Patents

Improvements in photographic reproduction processes

Info

Publication number
GB907146A
GB907146A GB10504/59A GB1050459A GB907146A GB 907146 A GB907146 A GB 907146A GB 10504/59 A GB10504/59 A GB 10504/59A GB 1050459 A GB1050459 A GB 1050459A GB 907146 A GB907146 A GB 907146A
Authority
GB
United Kingdom
Prior art keywords
developer
silver halide
methyl
emulsion layer
hypo
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
GB10504/59A
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
Publication of GB907146A publication Critical patent/GB907146A/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
    • G03C8/02—Photosensitive materials characterised by the image-forming section
    • G03C8/04—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of inorganic or organo-metallic compounds derived from photosensitive noble metals
    • G03C8/06—Silver salt diffusion transfer
    • 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)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

907,146. Photographic materials and developers; migratory transfer processes. KODAK Ltd. March 26, 1959 [March 31, 1958], No. 10504/59. Class 98 (2). A photographic silver salt migratory transfer process in which the receiving layer contains a silver precipitant, is carried out in the presence of a silver halide solvent and 5-nitro-, 6-nitro-, or 5; 6-dinitro-indazole. The indazole may be present in the emulsion layer, the receiving layer or the developer solution, which latter may also contain the silver halide solvent. The light-sensitive material may comprise the image-receiving layer over which the silver halide emulsion layer is coated, and the binder of the latter may be a dibasic acid mono-ester of a cellulose derivative according to Specification 868,241. The silver halide emulsion may contain potassium bromide and it may be of the direct positive type as described in Specifications 524,087 and 667,206. The developing agent may be a 3-pyrazolidone, if desired mixed with a weak developing agent as disclosed in Specifications 767,700, 767,701, 767,702 and 778,792. Alternatively, a developer such as 3<SP>1</SP>,4- dihydroxy-diphenyl may be included in the emulsion layer. In the examples, a metal/hydroquinone developer comprises metaboric acid, sodium hydroxide, sodium tetraphosphate, hypo and 5-methyl-benztriazole, or benztriazole itself and 5-nitro-indazole, another metal/ hydroquinone developer includes 3; 6; 9; 12; 15; 18; 21; 24 - octaoxa - hexacosane - 1; 26- bis (5-ethyl-2-methylpyridinium methyl sulphonate) as well as hypo and 5-nitroindazole, and 3-pyrazolidone/hydroquinone developers include 1 - # - phenethyl - quinolinium bromide or 3-methyl-2-#-phenethyl-isoquinolinium bromide as well as hypo. Suitable precipitants for the receiving layers are specified. The emulsion layer or the developer also may contain a 3-methylbenzothiazolium salt, 2-mercaptobenzamide or its N-methyl derivative, N; N - dimethyl - 2; 2<SP>1 </SP>- dithiobenzamide or N; N<SP>1</SP> - dimethyl - 2 : 2<SP>1</SP> - dithioformanilide.
GB10504/59A 1958-03-31 1959-03-26 Improvements in photographic reproduction processes Expired GB907146A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US724815A US3000736A (en) 1958-03-31 1958-03-31 Photographic silver halide diffusion transfer process

Publications (1)

Publication Number Publication Date
GB907146A true GB907146A (en) 1962-10-03

Family

ID=24912027

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10504/59A Expired GB907146A (en) 1958-03-31 1959-03-26 Improvements in photographic reproduction processes

Country Status (5)

Country Link
US (1) US3000736A (en)
BE (1) BE577129A (en)
DE (1) DE1064807B (en)
FR (1) FR1221438A (en)
GB (1) GB907146A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3099209A (en) * 1960-02-26 1963-07-30 Eastman Kodak Co Process of treating residual positive silver halide images with organic sulfur to render said images oleophilic
NL259197A (en) * 1960-12-17
US3311473A (en) * 1962-06-28 1967-03-28 Eastman Kodak Co Silver halide diffusion process and products therefor
DE1202985B (en) * 1962-09-29 1965-10-14 Siemens Ag Zirconium alloy
US3775122A (en) * 1967-07-28 1973-11-27 American Can Co Image production using photosensitive compositions of nitrone which is heat developed
US3607269A (en) * 1968-04-01 1971-09-21 Polaroid Corp Image-receiving elements and photographic processes employing same
JPS5633698B2 (en) * 1972-03-10 1981-08-05
US4172728A (en) * 1977-12-16 1979-10-30 E. I. Du Pont De Nemours And Company High contrast continuous tone developer and process of use

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2497917A (en) * 1947-10-17 1950-02-21 Eastman Kodak Co Method of producing direct positive photographs having increased density
US2496940A (en) * 1948-10-21 1950-02-07 Eastman Kodak Co Mixed grain photographic process
US2704721A (en) * 1954-04-22 1955-03-22 Polaroid Corp Photographic diffusion transfer reversal processes

Also Published As

Publication number Publication date
FR1221438A (en) 1960-06-01
DE1064807B (en) 1959-09-03
US3000736A (en) 1961-09-19
BE577129A (en)

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