BE502879A - - Google Patents

Info

Publication number
BE502879A
BE502879A BE502879DA BE502879A BE 502879 A BE502879 A BE 502879A BE 502879D A BE502879D A BE 502879DA BE 502879 A BE502879 A BE 502879A
Authority
BE
Belgium
Application number
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.)
Publication of BE502879A publication Critical patent/BE502879A/xx

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
    • G03C5/50—Reversal development; Contact processes
    • 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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/485—Direct positive emulsions
    • G03C1/48538—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure
    • G03C1/48546—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent
    • G03C1/48561—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent hydrazine compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
BE502879D 1950-04-29 BE502879A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US159150A US2563785A (en) 1950-04-29 1950-04-29 Direct positive photographs from hydrazine-containing developers

Publications (1)

Publication Number Publication Date
BE502879A true BE502879A (fr)

Family

ID=22571289

Family Applications (1)

Application Number Title Priority Date Filing Date
BE502879D BE502879A (fr) 1950-04-29

Country Status (5)

Country Link
US (1) US2563785A (fr)
BE (1) BE502879A (fr)
DE (1) DE877548C (fr)
FR (1) FR1087759A (fr)
GB (1) GB702162A (fr)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588982A (en) * 1950-10-26 1952-03-11 Eastman Kodak Co Direct positive photographs using hydrazine in the emulsion
BE512294A (fr) * 1951-06-27
US2706157A (en) * 1951-07-21 1955-04-12 Grant Photo Products Inc Processing photographic paper and film
BE603747A (fr) * 1960-05-13
GB1195838A (en) * 1966-10-24 1970-06-24 Agfa Gevaert Nv A Method of Producing Photographic Images
JPS5115745B1 (fr) * 1971-03-26 1976-05-19
US3917485A (en) * 1973-01-18 1975-11-04 Eastman Kodak Co Method of making photographic silver halide emulsions and products thereof
US4031127A (en) * 1975-08-06 1977-06-21 Eastman Kodak Company Acyl hydrazino thiourea derivatives as photographic nucleating agents
US4030925A (en) * 1975-08-06 1977-06-21 Eastman Kodak Company Photographic compositions and elements including internal latent image silver halide grains and acylhydrazinophenylthiourea nucleating agents therefor
US4030920A (en) * 1976-04-12 1977-06-21 Eastman Kodak Company Processing compositions containing glycols for color transfer processes comprising direct positive silver halide developement
US4080207A (en) * 1976-06-29 1978-03-21 Eastman Kodak Company Radiation-sensitive compositions and photographic elements containing N-(acylhydrazinophenyl) thioamide nucleating agents
JPS5814664B2 (ja) * 1976-12-30 1983-03-22 富士写真フイルム株式会社 ハロゲン化銀写真感光材料の処理方法
JPS6055820B2 (ja) * 1979-03-26 1985-12-06 コニカ株式会社 直接ポジハロゲン化銀写真感光材料
JPS55138742A (en) * 1979-04-17 1980-10-29 Fuji Photo Film Co Ltd Silver halide emulsion developing method
JPS59201049A (ja) * 1983-04-30 1984-11-14 Konishiroku Photo Ind Co Ltd ポジ型画像の形成方法
US4459347A (en) * 1983-05-11 1984-07-10 Eastman Kodak Company Adsorbable arylhydrazides and applications thereof to silver halide photography
US4478928A (en) * 1983-05-11 1984-10-23 Eastman Kodak Company Application of activated arylhydrazides to silver halide photography
US4560638A (en) * 1984-10-09 1985-12-24 Eastman Kodak Company Halftone imaging silver halide emulsions, photographic elements, and processes which employ novel arylhydrazides
US4661438A (en) 1985-04-04 1987-04-28 Eastman Kodak Company Quaternized tellurium salt fog inhibiting agents for silver halide photography
AU588878B2 (en) 1985-05-31 1989-09-28 Konishiroku Photo Industry Co., Ltd. Method for forming direct positive color image
DE3788600T2 (de) * 1986-07-22 1994-04-28 Fuji Photo Film Co Ltd Verfahren zur Behandlung eines farbphotographischen Silberhalogenidmaterials.
US4937160A (en) * 1988-08-27 1990-06-26 E. I. Du Pont De Nemours And Company Photographic silver halide elements containing aryl hydrazides
DE59103306D1 (de) * 1990-02-26 1994-12-01 Du Pont Deutschland Arylhydrazide enthaltende photographische Silberhalogenidmaterialien.
EP0603433A1 (fr) * 1992-12-22 1994-06-29 Agfa-Gevaert N.V. Méthode pour la production d'images positives directes
EP0754967A1 (fr) 1995-07-14 1997-01-22 Agfa-Gevaert N.V. Matériau photographique positif-direct contenant un stabilisator particulier
JP2003026651A (ja) * 2001-07-09 2003-01-29 Japan Hydrazine Co Inc スルホコハク酸ジヒドラジド塩及びその製造方法
WO2025058077A1 (fr) 2023-09-15 2025-03-20 富士フイルム株式会社 Composé, composition, matériau fonctionnel, matériau photographique à halogénure d'argent photosensible et matériau photographique à halogénure d'argent photosensible de type à transfert par diffusion

Also Published As

Publication number Publication date
FR1087759A (fr) 1955-02-28
GB702162A (en) 1954-01-13
DE877548C (de) 1953-05-26
US2563785A (en) 1951-08-07

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