GB1191460A - Thermographic Copying Process - Google Patents

Thermographic Copying Process

Info

Publication number
GB1191460A
GB1191460A GB2930867A GB2930867A GB1191460A GB 1191460 A GB1191460 A GB 1191460A GB 2930867 A GB2930867 A GB 2930867A GB 2930867 A GB2930867 A GB 2930867A GB 1191460 A GB1191460 A GB 1191460A
Authority
GB
United Kingdom
Prior art keywords
phaq
volatile material
receptor sheet
compound
alizarin
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
GB2930867A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1191460A publication Critical patent/GB1191460A/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
    • B41M5/382—Contact thermal transfer or sublimation processes
    • B41M5/38235—Contact thermal transfer or sublimation processes characterised by transferable colour-forming 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
    • B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

1,191,460. Printing processes. INTERNATIONAL BUSINESS MACHINES CORP. 26 June, 1967 [29 June, 1966], No. 29308/67. Heading B6C. [Also in Division G2] A thermographic method of producing a visible image comprises heating an original containing a volatile material to transfer it imagewise to a receptor sheet and immediately or subsequently converting the transferred material into a visible copy by a process involving a colour change in a suitable polyhydroxyanthraquinone (PHAQ) compound. The volatile material is generally coated uniformly on the original. The volatile material may be a PHAQ compound which is evaporated on to a receptor sheet containing either an alkanolamine to effect a colour change due to pH or reaction with the alkanolamine or a metal salt to form a coloured chelate. Alternatively, the receptor sheet with the PHAQ image may subsequently be treated with above reactants to produce the colour change or the volatile material may be an alkali which is transferred to a receptor sheet containing a PHAQ compound to produce a differently coloured image as above. Specified PHAQ compounds are alizarin and alizarin Red S which change from red to violet with alkali, quinizarin and 1,4,5,8 tetrahydroxyanthraquinone which react with alkanolamines to give blue dyes, flavopurpurin and anthrapurpurin. Aluminium, tin, chromium, iron and calcium salts may be used to form metal chelates with alizarin.
GB2930867A 1966-06-29 1967-06-26 Thermographic Copying Process Expired GB1191460A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56136366A 1966-06-29 1966-06-29

Publications (1)

Publication Number Publication Date
GB1191460A true GB1191460A (en) 1970-05-13

Family

ID=24241630

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2930867A Expired GB1191460A (en) 1966-06-29 1967-06-26 Thermographic Copying Process

Country Status (2)

Country Link
FR (1) FR1523762A (en)
GB (1) GB1191460A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159971A (en) * 1984-06-06 1985-12-11 Mitsubishi Chem Ind Transfer recording method
EP0170492A2 (en) * 1984-07-24 1986-02-05 Sharp Kabushiki Kaisha Thermosensitive recording method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159971A (en) * 1984-06-06 1985-12-11 Mitsubishi Chem Ind Transfer recording method
FR2565528A1 (en) * 1984-06-06 1985-12-13 Mitsubishi Chem Ind THERMAL TRANSFER PRINTING METHOD AND SET OF PRINT SHEETS
EP0170492A2 (en) * 1984-07-24 1986-02-05 Sharp Kabushiki Kaisha Thermosensitive recording method
EP0170492A3 (en) * 1984-07-24 1987-05-27 Sharp Kabushiki Kaisha Thermosensitive recording method
US4824822A (en) * 1984-07-24 1989-04-25 Sharp Kabushiki Kaisha Thermosensitive recording material

Also Published As

Publication number Publication date
FR1523762A (en) 1968-05-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee