GB951507A - Thermo-colourable record copy sheet - Google Patents

Thermo-colourable record copy sheet

Info

Publication number
GB951507A
GB951507A GB23468/62A GB2346862A GB951507A GB 951507 A GB951507 A GB 951507A GB 23468/62 A GB23468/62 A GB 23468/62A GB 2346862 A GB2346862 A GB 2346862A GB 951507 A GB951507 A GB 951507A
Authority
GB
United Kingdom
Prior art keywords
nitro
chloro
methoxy
coating
copy sheet
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
GB23468/62A
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.)
NCR Voyix Corp
National Cash Register Co
Original Assignee
NCR Corp
National Cash Register 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 NCR Corp, National Cash Register Co filed Critical NCR Corp
Publication of GB951507A publication Critical patent/GB951507A/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
    • B41M5/28Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating
    • B41M5/282Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating using thermochromic compounds
    • B41M5/284Organic thermochromic compounds
    • 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
    • B41M5/323Organic colour formers, e.g. leuco dyes

Landscapes

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

Abstract

951,507. Thermographic sheets. NATIONAL CASH REGISTER CO. June 19, 1962 [Sept. 18, 1961], No. 23468/62. Heading G2C. A copy sheet consists of a web having a heat sensitive coating containing a thermochromic 1, 3, 3 trimethyl-spiro [2<SP>1</SP>H-1<SP>1</SP>-benzo pyran)-2, 2<SP>1</SP>- indoline] of formula containing chloro, alkoxy or nitro substituents and at least a leuco methylene blue, of formula where R is benzoyl, iso-valeryl, iso-batyryl or propionyl these compounds being included in a binder containing a buffer to hold the coating at a pH of 7 so that it becomes coloured in heated areas. The coating may also contain a colour intensifier e.g. thiocarbanilide or thiourea or a derivative thereof, and a colour fixer e.g. urea. Specified substituted spiro-pyrano are 5- chloro, 6<SP>1</SP>-nitro; 5-chloro, 6<SP>1</SP>-nitro, 8<SP>1</SP>-ethoxy; 8<SP>1</SP>-methoxy; 6<SP>1</SP>, 8<SP>1</SP> - dinitro; 6<SP>1</SP>- nitro, 8<SP>1</SP>-methoxy; 6<SP>1</SP>-nitro, 8<SP>1</SP>-ethoxy; 8<SP>1</SP>-nitro; 6<SP>1</SP>-vitro; 4, 7, 8<SP>1</SP>-trimethoxy; 5-chloro, 8<SP>1</SP>-methoxy and 5-chloro, 6<SP>1</SP> nitro, 8<SP>1</SP> methoxy. Specification 887,958 is referred to.
GB23468/62A 1961-09-18 1962-06-19 Thermo-colourable record copy sheet Expired GB951507A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US138775A US3242122A (en) 1961-09-18 1961-09-18 Thermo-colorable record copy sheet and coating composition

Publications (1)

Publication Number Publication Date
GB951507A true GB951507A (en) 1964-03-04

Family

ID=22483582

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23468/62A Expired GB951507A (en) 1961-09-18 1962-06-19 Thermo-colourable record copy sheet

Country Status (7)

Country Link
US (1) US3242122A (en)
BE (1) BE622029A (en)
CH (1) CH407185A (en)
DE (1) DE1183918B (en)
GB (1) GB951507A (en)
NL (2) NL283351A (en)
SE (1) SE314301B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445234A (en) * 1962-10-31 1969-05-20 Du Pont Leuco dye/hexaarylbiimidazole imageforming composition
US3477850A (en) * 1965-07-08 1969-11-11 Itek Corp Light sensitive heat erasable copying system
US3421894A (en) * 1966-01-13 1969-01-14 Ncr Co Recording process utilizing 6'-nitro-1,3,3 - trimethyl-benzoindolinospiropyran dispersed in heat-meltable wax
US3422759A (en) * 1966-06-02 1969-01-21 Xerox Corp Lithographic imaging system using photochromic and thermochromic materials
US3584934A (en) * 1968-04-12 1971-06-15 Itek Corp Nonmechanical shutter
GB1273746A (en) * 1968-10-03 1972-05-10 Agfa Gevaert Unsaturated photochromic monomers and polymers prepared therefrom
JPS4948632B1 (en) * 1968-10-30 1974-12-23
US5234798A (en) * 1991-10-04 1993-08-10 Dittler Brothers, Incorporated Thermal reactive structures

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880110A (en) * 1954-12-02 1959-03-31 Minnesota Mining & Mfg Heat-sensitive copying-paper
IT631615A (en) * 1960-02-26
NL268635A (en) * 1960-08-26 1900-01-01

Also Published As

Publication number Publication date
NL127674C (en)
SE314301B (en) 1969-09-01
BE622029A (en)
US3242122A (en) 1966-03-22
CH407185A (en) 1966-02-15
NL283351A (en)
DE1183918B (en) 1964-12-23

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