FR716428A - Process and products for obtaining direct positives - Google Patents

Process and products for obtaining direct positives

Info

Publication number
FR716428A
FR716428A FR716428DA FR716428A FR 716428 A FR716428 A FR 716428A FR 716428D A FR716428D A FR 716428DA FR 716428 A FR716428 A FR 716428A
Authority
FR
France
Prior art keywords
products
obtaining direct
direct positives
positives
obtaining
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
Other languages
French (fr)
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.)
Schering Kahlbaum AG
Original Assignee
Schering Kahlbaum 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 Schering Kahlbaum AG filed Critical Schering Kahlbaum AG
Application granted granted Critical
Publication of FR716428A publication Critical patent/FR716428A/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
    • G03C8/08—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of organic compounds
FR716428D 1930-06-05 1931-05-01 Process and products for obtaining direct positives Expired FR716428A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1930SC017530 DE530337C (en) 1930-06-05 1930-06-05 Method of making direct positives using two layers

Publications (1)

Publication Number Publication Date
FR716428A true FR716428A (en) 1931-12-21

Family

ID=6554467

Family Applications (1)

Application Number Title Priority Date Filing Date
FR716428D Expired FR716428A (en) 1930-06-05 1931-05-01 Process and products for obtaining direct positives

Country Status (3)

Country Link
BE (1) BE379540A (en)
DE (1) DE530337C (en)
FR (1) FR716428A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565376A (en) * 1947-02-19 1951-08-21 Polaroid Corp Photographic positive-producing light sensitive element and process
US2607684A (en) * 1949-09-24 1952-08-19 Eastman Kodak Co Direct-positive photographic process
US2661293A (en) * 1946-10-08 1953-12-01 Polaroid Corp Process of producing a colored photographic image by means of exhaustion of developer
US2663641A (en) * 1946-10-07 1953-12-22 Gevaert Photo Prod Nv Production of reversal images
US2665986A (en) * 1939-11-02 1954-01-12 Gevaert Photo Prod Nv Process of producing colored reversal images
US2725296A (en) * 1951-09-14 1955-11-29 Eastman Kodak Co Two-layer integral negative positive photographic material
US2774668A (en) * 1953-05-28 1956-12-18 Polaroid Corp Process and product for forming color images from complete dyes
US2802735A (en) * 1946-10-08 1957-08-13 Polaroid Corp Photographic transfer process utilizing the reducing action of a developer for producing a colored photographic transfer image

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2665986A (en) * 1939-11-02 1954-01-12 Gevaert Photo Prod Nv Process of producing colored reversal images
US2663641A (en) * 1946-10-07 1953-12-22 Gevaert Photo Prod Nv Production of reversal images
US2661293A (en) * 1946-10-08 1953-12-01 Polaroid Corp Process of producing a colored photographic image by means of exhaustion of developer
US2802735A (en) * 1946-10-08 1957-08-13 Polaroid Corp Photographic transfer process utilizing the reducing action of a developer for producing a colored photographic transfer image
US2565376A (en) * 1947-02-19 1951-08-21 Polaroid Corp Photographic positive-producing light sensitive element and process
US2607684A (en) * 1949-09-24 1952-08-19 Eastman Kodak Co Direct-positive photographic process
US2725296A (en) * 1951-09-14 1955-11-29 Eastman Kodak Co Two-layer integral negative positive photographic material
US2774668A (en) * 1953-05-28 1956-12-18 Polaroid Corp Process and product for forming color images from complete dyes

Also Published As

Publication number Publication date
BE379540A (en) 1931-06-30
DE530337C (en) 1931-07-27

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