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DE3070044D1 - Color imaging system - Google Patents

Color imaging system

Info

Publication number
DE3070044D1
DE3070044D1 DE8181900104T DE3070044T DE3070044D1 DE 3070044 D1 DE3070044 D1 DE 3070044D1 DE 8181900104 T DE8181900104 T DE 8181900104T DE 3070044 T DE3070044 T DE 3070044T DE 3070044 D1 DE3070044 D1 DE 3070044D1
Authority
DE
Germany
Prior art keywords
dye
iii
oxidise
amt
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
DE8181900104T
Other languages
German (de)
Inventor
John M Winslow
Kenneth G Gatzke
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Application granted granted Critical
Publication of DE3070044D1 publication Critical patent/DE3070044D1/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
    • B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
    • B41M5/32—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers one component being a heavy metal compound, e.g. lead or iron
    • 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
    • B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
    • B41M5/323—Organic colour formers, e.g. leuco dyes
    • 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
    • G03C1/494—Silver salt compositions other than silver halide emulsions; Photothermographic systems ; Thermographic systems using noble metal compounds
    • G03C1/498—Photothermographic systems, e.g. dry silver
    • G03C1/4989—Photothermographic systems, e.g. dry silver characterised by a thermal imaging step, with or without exposure to light, e.g. with a thermal head, using a laser

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Color Television Image Signal Generators (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Color Image Communication Systems (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Processing Of Color Television Signals (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

Imageable layer comprises (a) a polymeric binder (I), (b) a leuco dye or bleachable dye (II) and (c) a nitrate salt (III). Nitrate ion is present in a ratio of at least 0.1 moles/mole (II) and the (III) is capable of releasing an oxidising amt. of HNO3, NO, NO2 or N204 when heated to 200 deg.C for 60 seconds, sufficient to oxidise the bleachable dye to a different colour or to a colourless state or to oxidise the leuco dye to a coloured state. Pref. (II) is present in an amt. of at least 0.3 wt.% of the layer and the (III) is a hydrated nitrate salt of Zn, Cd, Ni, Al, Fe, Cu, Mg, Cr, Co, Bi, La, Gd or Th. Suitable binders are e.g. polyvinyl acetals, polyesters, vinyl resins, PVP, polycarbonates, polyamides, PVB, polyacrylates, cellulose esters or copolymers or mixts. of these. The layer may also contain an acid (IV), which accelerates the decolourisation of the dye on heating. The prods. are silver-free, thermally developable colour imaging systems or as antihalation layers in photothermographic systems.
DE8181900104T 1979-12-07 1980-11-10 Color imaging system Expired DE3070044D1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10119779A 1979-12-07 1979-12-07
US10114479A 1979-12-07 1979-12-07
PCT/US1980/001506 WO1981001757A1 (en) 1979-12-07 1980-11-10 Color imaging system

Publications (1)

Publication Number Publication Date
DE3070044D1 true DE3070044D1 (en) 1985-03-07

Family

ID=26797946

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181900104T Expired DE3070044D1 (en) 1979-12-07 1980-11-10 Color imaging system

Country Status (9)

Country Link
EP (1) EP0041540B1 (en)
JP (1) JPS56501480A (en)
AT (1) ATE11460T1 (en)
AU (1) AU543071B2 (en)
BR (1) BR8008959A (en)
DE (1) DE3070044D1 (en)
IT (1) IT1148239B (en)
MX (1) MX157192A (en)
WO (1) WO1981001757A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379835A (en) * 1980-12-22 1983-04-12 Minnesota Mining And Manufacturing Company Black image from a thermographic imaging system
US4386154A (en) * 1981-03-26 1983-05-31 Minnesota Mining And Manufacturing Company Visible light sensitive, thermally developable imaging systems
CA1236299A (en) * 1984-04-16 1988-05-10 Minnesota Mining And Manufacturing Company Prevention of spotting in thermal imaging compositions
US4889932A (en) * 1984-10-01 1989-12-26 Minnesota Mining And Manufacturing Company Stabilized leuco phenazine dyes and their use in an imaging system
US4647525A (en) * 1984-10-01 1987-03-03 Minnesota Mining And Manufacturing Company Stabilized leuco phenazine dyes and their use in an imaging system
EP0646628B1 (en) * 1993-09-27 2001-12-12 Tulalip Consultoria Comercial Sociedade Unipessoal S.A. Spectrally sensitized silver halide photographic elements

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE442701A (en) * 1940-10-09
US2756144A (en) * 1951-04-25 1956-07-24 Brown Allen Chemicals Inc Photochemical multicolor printing of textile and the like
US2880153A (en) * 1957-01-28 1959-03-31 American Viscose Corp Photopolymerization process
US3300314A (en) * 1963-02-01 1967-01-24 Eastman Kodak Co Nonsilver, light-sensitive photographic elements
US3460964A (en) * 1964-11-19 1969-08-12 Eastman Kodak Co Heat-sensitive recording element and composition
US3595655A (en) * 1968-10-03 1971-07-27 Little Inc A Non-silver direct positive dyes bleachout system using polymethine dyes and colorless activators
US3595657A (en) * 1968-10-03 1971-07-27 Little Inc A Non-silver direct positive dye bleachout system using indigoid dyes and colorless activators
US3801319A (en) * 1972-06-21 1974-04-02 Xerox Corp Imaging method utilizing chemical reactivities of photoexcited states of aromatic hydroxy compounds
JPS5143786B2 (en) * 1972-12-23 1976-11-24
JPS6010781B2 (en) * 1977-06-22 1985-03-20 潤三 下飯坂 Quasi-static heavy liquid sorting method and equipment

Also Published As

Publication number Publication date
MX157192A (en) 1988-11-03
JPS56501480A (en) 1981-10-15
EP0041540A1 (en) 1981-12-16
EP0041540B1 (en) 1985-01-23
EP0041540A4 (en) 1982-03-29
IT8050318A0 (en) 1980-12-05
BR8008959A (en) 1981-10-20
ATE11460T1 (en) 1985-02-15
IT1148239B (en) 1986-11-26
AU6644581A (en) 1981-07-06
WO1981001757A1 (en) 1981-06-25
AU543071B2 (en) 1985-03-28

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee