GB790811A - Process for the production of laterally non-reversed positive copies by heat development - Google Patents

Process for the production of laterally non-reversed positive copies by heat development

Info

Publication number
GB790811A
GB790811A GB4116/56A GB411656A GB790811A GB 790811 A GB790811 A GB 790811A GB 4116/56 A GB4116/56 A GB 4116/56A GB 411656 A GB411656 A GB 411656A GB 790811 A GB790811 A GB 790811A
Authority
GB
United Kingdom
Prior art keywords
transfer
transfer layer
layers
heavy metal
silver halide
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
GB4116/56A
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 GB790811A publication Critical patent/GB790811A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C8/00Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/40Development by heat ; Photo-thermographic processes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/142Dye mordant

Abstract

790,811. Photographic image transfer by heat. AGFA AKT.-GES FUR PHOTOFABRIKATION. Feb. 9. 1956 [Feb. 11, 1955], No. 4116/56. Class 98(2) An exposed silver halide emulsion layer containing a developing substance is heated in contact with a transfer layer containing a diazo compound and also a salt containing a heavy metal in the anion and if desired an oxidizing agent, to form a laterally correct image in azo dye in the transfer layer. Acids or acid salts may be used to increase activity of transfer. The emulsion may be of silver chloride bromide or iodide, or mixtures thereof, and may be of any sensitivity, gradation, or silver content; and numerous colloids for the layers, developing substances, diazo compounds, heavy metal salts, oxidizing agents and other materials for use therein are quoted. Heating may be effected in a hot press or drying drum at 50-180‹C., preferably at 80-150‹C. Six examples furnish quantitative details for production of the two layers, thus in Example 1 30 G. of 1 - amino - 2 - naphthol, 30 G of potassiummetabisulphite and 45 G. of acetic acid are added to one litre of silver halide emulsion which may contain other additives and the mixture is cast on a paper support and dried; and for the transfer layer 8 G. of diazotized 1 - amino - 2 - naphthol - 4 - sulphonic acid, .4 G. of ammonium molybdate, 1 G. of sodium perborate, 80cc. of 10 per cent sulphuric acid, 500 cc. of 10 per cent polyvinyl alcohol and 100 cc. of glycerin with 500 cc. of water are mixed and cast similarly. After exposure the two layers are heated in contact preferably at 110-135‹C. for 5-20 seconds in a hot press and separated to give 'a bluish violet image in the transfer layer. A similar heat transfer process operating without the presence of the heavy metal salt is described. The manner of exposure of the silver halide emulsion layer so that the transferred image produced therefrom may be laterally correct is not described. Specification 655,273 is referred to.
GB4116/56A 1955-02-11 1956-02-09 Process for the production of laterally non-reversed positive copies by heat development Expired GB790811A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0022073 1955-02-11

Publications (1)

Publication Number Publication Date
GB790811A true GB790811A (en) 1958-02-19

Family

ID=7149220

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4116/56A Expired GB790811A (en) 1955-02-11 1956-02-09 Process for the production of laterally non-reversed positive copies by heat development

Country Status (5)

Country Link
US (1) US3007795A (en)
BE (1) BE545042A (en)
CH (1) CH347074A (en)
FR (1) FR1141235A (en)
GB (1) GB790811A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3033677A (en) * 1959-06-19 1962-05-08 Eastman Kodak Co Photographic processes utilizing photolytic halogen
US3211551A (en) * 1957-12-10 1965-10-12 Lumoprint Zindler Kg Diffusion transfer process
US4021240A (en) 1975-12-22 1977-05-03 Eastman Kodak Company Photothermographic and thermographic compositions and uses therefor containing sulfonamidophenol reducing agents and four equivalent color couplers
FR2379833A1 (en) * 1977-02-07 1978-09-01 Eastman Kodak Co THERMODEVELOPABLE PHOTOGRAPHIC PRODUCT
US4187108A (en) * 1977-02-07 1980-02-05 Eastman Kodak Company Heat developable material and process

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126281A (en) * 1959-02-04 1964-03-24 Formula
NL256771A (en) * 1960-10-12
GB1054605A (en) * 1964-08-01
DE1772813A1 (en) * 1968-07-08 1971-06-09 Agfa Gevaert Ag Dry copying process

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1922727A (en) * 1928-09-29 1933-08-15 Celanese Corp Production of pattern effects upon textile fabrics or other materials
US1920542A (en) * 1930-09-04 1933-08-01 Gen Aniline Works Inc New dyeing preparation and its conversion to dyestuffs
FR744706A (en) * 1931-09-21 1933-04-26
DE596104C (en) * 1931-10-19 1934-04-26 Kalle & Co Akt Ges Process for the production of diazo light images using metal salts
GB425235A (en) * 1933-09-11 1935-03-11 Werner Paul Leuch Improvements in or relating to the production of photographic diazotype prints
US2228562A (en) * 1938-03-17 1941-01-14 Dietzgen Co Eugene Production of photographic diazotype prints
BE437025A (en) * 1938-12-05
GB629656A (en) * 1946-09-12 1949-09-26 Gen Aniline & Film Corp Process for positive diazo-type and negative metal reproduction images and light-sensitive material therefor
US2661293A (en) * 1946-10-08 1953-12-01 Polaroid Corp Process of producing a colored photographic image by means of exhaustion of developer
US2747999A (en) * 1953-03-16 1956-05-29 Eastman Kodak Co Photographic reproduction process

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3211551A (en) * 1957-12-10 1965-10-12 Lumoprint Zindler Kg Diffusion transfer process
US3033677A (en) * 1959-06-19 1962-05-08 Eastman Kodak Co Photographic processes utilizing photolytic halogen
US4021240A (en) 1975-12-22 1977-05-03 Eastman Kodak Company Photothermographic and thermographic compositions and uses therefor containing sulfonamidophenol reducing agents and four equivalent color couplers
FR2379833A1 (en) * 1977-02-07 1978-09-01 Eastman Kodak Co THERMODEVELOPABLE PHOTOGRAPHIC PRODUCT
US4187108A (en) * 1977-02-07 1980-02-05 Eastman Kodak Company Heat developable material and process

Also Published As

Publication number Publication date
BE545042A (en)
US3007795A (en) 1961-11-07
CH347074A (en) 1960-06-15
FR1141235A (en) 1957-08-28

Similar Documents

Publication Publication Date Title
GB801053A (en) Process for the production of laterally non-reversed positive copies by heat development
GB821506A (en) The production of positive photographic images by heat development
GB790811A (en) Process for the production of laterally non-reversed positive copies by heat development
GB1038337A (en) Improvements in light-sensitive photothermographic materials
GB749326A (en) Improvements in the hardening of gelatin
GB470074A (en) Production of coloured photographic images by development
US2691587A (en) Developing of diazotype images
US3694207A (en) Treatment of imagewise exposed catalase active or peroxidase active enzyme containing layer with peroxide
GB687751A (en) Process and material for the direct production of positive photographic images
GB985933A (en) Improvements in or relating to methods of thermographic copying
GB539190A (en) Method of colour photography and materials therefor
GB948661A (en) Diazotype photoprinting process
GB318511A (en) Improved manufacture of photographic paper and films
GB763797A (en) Improvements in dye transfer processes particularly for colour photography
GB804076A (en) Improvements in or relating to the manufacture of prints and photographic material therefor
US3676132A (en) Thermographic reproduction material and process
US3719491A (en) Diazo-type reproduction process
GB869190A (en) A process for the production of direct positives by the silver salt diffusion process
GB717915A (en) Improvements in photographic processes involving physical development
US1776155A (en) Light sensitive layer and process of preparing it
GB178828A (en) Photographic print-out paper and prints made therefrom
GB1026357A (en) Improvements relating to photosensitive material and its preparation
GB843713A (en) Preparation of blue colloidal silver dispersions for photographic antihalo layers
GB706333A (en) Improvements in or relating to the production of photographic images by a migratory reversal transfer process
GB893657A (en) Improvements in or relating to image-receiving elements