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GB1402270A - Thermosensitive colour-forming material - Google Patents

Thermosensitive colour-forming material

Info

Publication number
GB1402270A
GB1402270A GB5479172A GB5479172A GB1402270A GB 1402270 A GB1402270 A GB 1402270A GB 5479172 A GB5479172 A GB 5479172A GB 5479172 A GB5479172 A GB 5479172A GB 1402270 A GB1402270 A GB 1402270A
Authority
GB
United Kingdom
Prior art keywords
binder
cellulose
pigment
cellulose ether
nov
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
GB5479172A
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.)
Olivetti SpA
Original Assignee
Olivetti SpA
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 Olivetti SpA filed Critical Olivetti SpA
Publication of GB1402270A publication Critical patent/GB1402270A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/30Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
    • B41M5/337Additives; Binders
    • B41M5/3372Macromolecular compounds

Landscapes

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

Abstract

1402270 Thermosensitive colour-forming material having cellulose ether binder ING C OLIVETTI & C Spa 27 Nov 1972 [29 Nov 1971] 54791/72 Heading G2C A thermosensitive material comprises a paper support carrying in a single coating a composition formed by mixing together separately prepared dispersions in a binder of (a) finely divided solid crystal violet lactone and (b) a phenolic acidic compound, the binder comprising at least 5 wt per cent of a non-ionic cellulose ether which acts as a dispersing and binding agent, said (a) and (b) dispersions containing respectively a lubricating agent and a white or weakly coloured pigment capable of absorbing the melted composition. The binder may be methyl cellulose, hydroxypropylmethyl cellulose or hydroxyethylmethyl cellulose. The cellulose ether may be used in combination with starch, modified starch, polyacrylamide, pectine or urea formaldehyde resin. The lubricating agent may be a wax, metal soap or lubricant pigment, e.g. calcium, magnesium, silver, lithium or aluminium stearate, an aminide wax or micronized talcum. The pigment may be clay, kaolin, silica, calcium carbonate, zinc oxide, titanium oxide, magnesium silicate, barium sulphate or talcum. The phenolic acidic compound may be 4, 4'-isopropylidene diphenol or Bisphenol A.
GB5479172A 1971-11-29 1972-11-27 Thermosensitive colour-forming material Expired GB1402270A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT7090471A IT942986B (en) 1971-11-29 1971-11-29 PERFEZIO NATO THERMOSENSITIVE ELEMENT AND ITS USE IN REPRODUCTION OR THERMOGRAPHIC RECORDING SYSTEMS

Publications (1)

Publication Number Publication Date
GB1402270A true GB1402270A (en) 1975-08-06

Family

ID=11314470

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5479172A Expired GB1402270A (en) 1971-11-29 1972-11-27 Thermosensitive colour-forming material

Country Status (4)

Country Link
JP (1) JPS4876548A (en)
DE (1) DE2259018A1 (en)
GB (1) GB1402270A (en)
IT (1) IT942986B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3020655A1 (en) * 1979-06-01 1980-12-11 Sanyo Kokusaku Pulp Co HEAT SENSITIVE RECORDING MATERIAL
GB2175624A (en) * 1985-05-02 1986-12-03 Wiggins Teape Group Ltd Pressure sensitive recording material

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT991891B (en) * 1973-07-27 1975-08-30 Olivetti & Co Spa IMPROVEMENTS IN A THERMO-SENSITIVE ELEMENT AND ITS CONDITIONS OF USE IN REPRODUCTION AND THERMO-GRAPHIC RECORDING SYSTEMS
IT991890B (en) * 1973-07-27 1975-08-30 Olivetti & Co Spa PERFECTED THERMO-SENSITIVE ELEMENT AND ITS USE IN THERMO-GRAPHIC REPRODUCTION OR RECORDING SYSTEMS
JPS52145228A (en) * 1976-05-28 1977-12-03 Tomoegawa Paper Co Ltd Heat sensitive recording sheet
JPS52145227A (en) * 1976-05-28 1977-12-03 Tomoegawa Paper Co Ltd Recording sheet by electric current
JPS5386229A (en) * 1977-01-07 1978-07-29 Kanzaki Paper Mfg Co Ltd Thermosensitive recording body
JPS582835B2 (en) * 1977-02-25 1983-01-18 三菱製紙株式会社 Thermal paper that prevents debris from adhering to the thermal head
JPS53118059A (en) * 1977-03-25 1978-10-16 Mitsubishi Paper Mills Ltd Thermosensitive paper in which adhesiveness of refuses to thermal head be improved
JPS5423545A (en) * 1977-07-22 1979-02-22 Mitsubishi Paper Mills Ltd Heat sensitive paper with reduced adherability of dregs to thermal head
JPS5425845A (en) * 1977-07-29 1979-02-27 Mitsubishi Paper Mills Ltd Heat sensitive paper with improved dregs adherability
US4181771A (en) * 1977-11-04 1980-01-01 Ncr Corporation Thermally responsive record material
JPS5491338A (en) * 1977-12-28 1979-07-19 Jujo Paper Co Ltd Thermosensitive recording paper
JPS54183358U (en) * 1978-06-14 1979-12-26
JPS559830A (en) * 1978-07-05 1980-01-24 Shiraishi Kogyo Kk Coating material for heat-sensitive recording paper
JPS564489A (en) * 1979-06-25 1981-01-17 Japan Carlit Co Ltd:The Thermosensitive recording element
JPS5675895A (en) * 1979-11-27 1981-06-23 Kanzaki Paper Mfg Co Ltd Heat sensitive recording material
JPS5741995A (en) * 1980-08-27 1982-03-09 Kanzaki Paper Mfg Co Ltd Heat-sensitive recording paper
JPS57193388A (en) * 1981-05-23 1982-11-27 Kanzaki Paper Mfg Co Ltd Thermo-sensitive recording medium
JPS58142892A (en) * 1982-02-19 1983-08-25 Shin Etsu Chem Co Ltd heat sensitive recording material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3020655A1 (en) * 1979-06-01 1980-12-11 Sanyo Kokusaku Pulp Co HEAT SENSITIVE RECORDING MATERIAL
GB2175624A (en) * 1985-05-02 1986-12-03 Wiggins Teape Group Ltd Pressure sensitive recording material
US4851384A (en) * 1985-05-02 1989-07-25 The Wiggins Teape Group Limited Record material

Also Published As

Publication number Publication date
IT942986B (en) 1973-04-02
JPS4876548A (en) 1973-10-15
DE2259018A1 (en) 1973-05-30

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Legal Events

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