GB1207367A - Improvements in or relating to the reflex copying of prints - Google Patents

Improvements in or relating to the reflex copying of prints

Info

Publication number
GB1207367A
GB1207367A GB57696/67A GB5769667A GB1207367A GB 1207367 A GB1207367 A GB 1207367A GB 57696/67 A GB57696/67 A GB 57696/67A GB 5769667 A GB5769667 A GB 5769667A GB 1207367 A GB1207367 A GB 1207367A
Authority
GB
United Kingdom
Prior art keywords
water
source
cathode
image
original
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
GB57696/67A
Inventor
Frank James Loprest
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.)
GAF Corp
Original Assignee
GAF Corp
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 GAF Corp filed Critical GAF Corp
Publication of GB1207367A publication Critical patent/GB1207367A/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
    • G03C1/00—Photosensitive materials
    • G03C1/52—Compositions containing diazo compounds as photosensitive substances
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G17/00—Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process
    • G03G17/02—Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process with electrolytic development
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/028—Layers in which after being exposed to heat patterns electrically conductive patterns are formed in the layers, e.g. for thermoxerography

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Optics & Photonics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

1,207,367. 367. Thermographic processes and apparatus. GAF CORP. Dec. 19, 1967, [Dec.30, 1966], No. 57696/67. Headings G2A and G2C. A thermographic process comprises image-wise reflex exposing to heat a two-composent diazotype material containing a substance which releases water on heating, placing the material between two electrodes with the exposed layer in contact with the cathode, passing a current to electrolyse the water and produce alkali at the cathode which causes image-wise coupling of the diazonium compound and the coupler. The developed material may be fixed by uniform exposure to ultraviolet light. Specified substances which release water on heating are the hydrated salts of lithium metaborate, sodium sulphate, sodium dihydrogen phosphate, borax, sodium alginate and sugar. The invention also comprises a thermographic exposure and development apparatus for the above material comprising a source of infrared radiation, means for exposing the material to the source and means for passing an electrical current through the material using two electrodes and a source of electrical current. The infraradiation source is preferably in a rotating cylinder. As shown, the heat sensitive material C containing diazoium compound, azo coupler and a substance which releases water on heating (either one which contains water of crystallisation or a hygroscopic substance) and original D are placed in slot 9 and are passed round rotating cylinder N containing an infrared source 17 so that material C is reflex exposed. The material C and original D are held in contact with the cylinder by an endless belt 12 and after exposure the original D is separated from the material C by means 20. The material C, bearing a latent water image, passes between rollers 25 and 26, acting as anode and cathode respectively, so that the water is electrolysed and hydrogen is released at cathode 26 creating an alkaline environment and allowing coupling to occur. The material C is now uniformly exposed to ultraviolet light 27 to decompose the remaining diazonium compound and fix the image.
GB57696/67A 1966-12-30 1967-12-19 Improvements in or relating to the reflex copying of prints Expired GB1207367A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60608266A 1966-12-30 1966-12-30

Publications (1)

Publication Number Publication Date
GB1207367A true GB1207367A (en) 1970-09-30

Family

ID=24426451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB57696/67A Expired GB1207367A (en) 1966-12-30 1967-12-19 Improvements in or relating to the reflex copying of prints

Country Status (6)

Country Link
US (1) US3445654A (en)
CH (1) CH476582A (en)
DE (1) DE1597600A1 (en)
FR (1) FR1549139A (en)
GB (1) GB1207367A (en)
NL (1) NL6717767A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181565A (en) * 1985-10-12 1987-04-23 Fuji Photo Film Co Ltd Heat-sensitive recording material

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4116559A (en) * 1976-05-26 1978-09-26 Olympus Optical Co., Ltd. Process of and apparatus for forming a picture image information such as a manuscript, etc. on a dry treated film and developing the same
US4452877A (en) * 1982-08-26 1984-06-05 American Hoechst Corporation Electrolysis treatment of light sensitive diazo coated supports
JPS61145544A (en) * 1984-12-19 1986-07-03 Fuji Photo Film Co Ltd Photographic material
US5576074A (en) * 1995-08-23 1996-11-19 Minnesota Mining And Manufacturing Company Laser write process for making a conductive metal circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2541488A (en) * 1946-03-14 1951-02-13 Eastman Kodak Co Electrolytic diazo process
US3116148A (en) * 1959-12-21 1963-12-31 Ncr Co Photo-chemical printing process and sheet material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181565A (en) * 1985-10-12 1987-04-23 Fuji Photo Film Co Ltd Heat-sensitive recording material

Also Published As

Publication number Publication date
FR1549139A (en) 1968-12-06
US3445654A (en) 1969-05-20
DE1597600A1 (en) 1971-03-25
NL6717767A (en) 1968-07-01
CH476582A (en) 1969-08-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees