GB1076799A - Photographic process for the production of reflex copies - Google Patents

Photographic process for the production of reflex copies

Info

Publication number
GB1076799A
GB1076799A GB5211264A GB5211264A GB1076799A GB 1076799 A GB1076799 A GB 1076799A GB 5211264 A GB5211264 A GB 5211264A GB 5211264 A GB5211264 A GB 5211264A GB 1076799 A GB1076799 A GB 1076799A
Authority
GB
United Kingdom
Prior art keywords
copying
dyes
light
dec
layer
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
GB5211264A
Inventor
Wolfgang Lassig
Hans Ulrich
Reinhard Muller
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 GB1076799A publication Critical patent/GB1076799A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/46—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography characterised by the light-to-heat converting means; characterised by the heat or radiation filtering or absorbing means or layers
    • 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
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/02—Direct bleach-out processes; Materials therefor; Preparing or processing such materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/382—Contact thermal transfer or sublimation processes
    • B41M5/385—Contact thermal transfer or sublimation processes characterised by the transferable dyes or pigments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/382—Contact thermal transfer or sublimation processes
    • B41M5/385—Contact thermal transfer or sublimation processes characterised by the transferable dyes or pigments
    • B41M5/388—Azo dyes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/46—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography characterised by the light-to-heat converting means; characterised by the heat or radiation filtering or absorbing means or layers
    • B41M5/465—Infra-red radiation-absorbing materials, e.g. dyes, metals, silicates, C black

Abstract

1,076,799. Direct-positive photographic copying process. AGFA A. G. Dec.22, 1964 [Dec.23, 1963; Dec.24, 1963], No.52112/64. Heading G2C. Permanent direct-positive copies of an original are made using a high-intensity light flash by reflex exposure through a coloured copying-material which comprises a transparent support, with a transparency of at least 70% for the visible printing light, carrying a layer having a density of between 0.2 and 0À8 for visible light and containing between 0.01 and 1% by weight of a material capable of absorbing light and converting it into heat energy dispersed in a film-forming binder which decomposes at 100 to 220‹C. The regions of the copying-material corresponding to the non- image or highly reflecting areas of the original receive a greater exposure than those corresponding to the image or light-absorbing areas and their colour is eliminated or reduced probably by bubbleformation in the binder. Gas-producing compounds such as diazo compound, diazonium salts, azides, pyrrole carboxylic acid or nitrosamines may also be present in the copying layer. Lightabsorbing materials in the copying layer may be finely-divided silver, bismuth, lead, iron, cobalt or nickel, carbon black, graphite, manganese oxide, lead sulphide, azo dyes. formazane dyes. cyanine dyes, triphenyl- or diphenylmethyl methane dyes and indigoid dyes. Binders are carboxymethyl-cellulose, polyvinyl alcohol, polyacrylamide, salts and esters of alginic acid, carrageenates and proteins such as gelatine. The support may be of transparent paper, cellulose esters, polystyrene, polyvinyl chloride, polycarbonates and polyesters. The high-intensity light flash source is an electronic photo-flash tube.
GB5211264A 1963-12-23 1964-12-22 Photographic process for the production of reflex copies Expired GB1076799A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEA0044869 1963-12-23
DEA0044885 1963-12-24

Publications (1)

Publication Number Publication Date
GB1076799A true GB1076799A (en) 1967-07-19

Family

ID=25963993

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5211264A Expired GB1076799A (en) 1963-12-23 1964-12-22 Photographic process for the production of reflex copies

Country Status (3)

Country Link
BE (1) BE657502A (en)
DE (1) DE1447572A1 (en)
GB (1) GB1076799A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4218689A (en) 1978-01-30 1980-08-19 Rca Corporation Ablatable medium for optical recording
EP0908307A2 (en) * 1997-10-08 1999-04-14 Agfa-Gevaert N.V. A method for making positive printing plates from a heat mode sensitive imaging element
EP0908306A3 (en) * 1997-10-08 1999-12-29 Agfa-Gevaert N.V. A method for making positive working printing plates from a heat mode sensitive imaging element

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4218689A (en) 1978-01-30 1980-08-19 Rca Corporation Ablatable medium for optical recording
EP0908307A2 (en) * 1997-10-08 1999-04-14 Agfa-Gevaert N.V. A method for making positive printing plates from a heat mode sensitive imaging element
EP0908307A3 (en) * 1997-10-08 1999-12-29 Agfa-Gevaert N.V. A method for making positive printing plates from a heat mode sensitive imaging element
EP0908306A3 (en) * 1997-10-08 1999-12-29 Agfa-Gevaert N.V. A method for making positive working printing plates from a heat mode sensitive imaging element

Also Published As

Publication number Publication date
DE1447572A1 (en) 1968-12-05
BE657502A (en) 1965-06-23

Similar Documents

Publication Publication Date Title
GB673244A (en) Improvements in or relating to methods of producing facsimile copies from a graphic original
US2844733A (en) Reflex thermoprinting
GB712966A (en) Photosensitive vesicular print material and process of making the same
US2245628A (en) Reflex copying process
GB1103864A (en) Reprographic process
GB1076799A (en) Photographic process for the production of reflex copies
GB966694A (en) The production of copies of graphic originals by successive exposures to light and to heat producing radiation
GB1428124A (en) Image intensification process and photographic material for use thereofr
US3081166A (en) Process for making positive diazotype copies by exposure to light of a mercury vaporlamp and light-sensitive material suited for this process
GB850954A (en) Bubble-forming, light-sensitive materials using dispersed photosensitizers in hydrophobic resin
GB1177679A (en) Process for Producing a Visible Image.
US3479183A (en) Negative-working diazosulfonate reproduction process
GB1131238A (en) Radiation sensitive silver-dye compounds
DE2241563A1 (en) PROCEDURE FOR Awareness-raising OF MATERIALS
US2552355A (en) Diazotype layers having organic esters and nitriles containing an active methylene group as azo components
US2542560A (en) Diazotypes on plastic surfaced carrier containing 5,5' diresorcinol
US2381984A (en) Intensification of the image of diazotype light sensitive layers on a transparent base
GB1354237A (en) Process for preparing photoconductive materials
US3728115A (en) Photographic dry copying material
GB1265043A (en)
US2537001A (en) Diazotype layers having cyan acetyl amides as azo components
US2523882A (en) Intensification of the image of diazotype light-sensitive layers
US2691579A (en) Ultraviolet absorbing layers
US1910573A (en) Photographic printing by phosphorescent plates
GB1151368A (en) Two-Component Diazotype Copying Material