EP1813436A3 - Heat sensitive recording material comprising a feature for authentification - Google Patents

Heat sensitive recording material comprising a feature for authentification Download PDF

Info

Publication number
EP1813436A3
EP1813436A3 EP07000997A EP07000997A EP1813436A3 EP 1813436 A3 EP1813436 A3 EP 1813436A3 EP 07000997 A EP07000997 A EP 07000997A EP 07000997 A EP07000997 A EP 07000997A EP 1813436 A3 EP1813436 A3 EP 1813436A3
Authority
EP
European Patent Office
Prior art keywords
color
heat
sensitive recording
recording material
feature
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.)
Withdrawn
Application number
EP07000997A
Other languages
German (de)
French (fr)
Other versions
EP1813436A2 (en
Inventor
Wolfgang Dr. Wagner
Günter Dr. Gabel
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.)
Mitsubishi HiTech Paper Flensburg GmbH
Mitsubishi HiTec Paper Bielefeld GmbH
Stora Spezialpapiere GmbH
Original Assignee
Mitsubishi HiTech Paper Flensburg GmbH
Mitsubishi HiTec Paper Bielefeld GmbH
Stora Spezialpapiere GmbH
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 Mitsubishi HiTech Paper Flensburg GmbH, Mitsubishi HiTec Paper Bielefeld GmbH, Stora Spezialpapiere GmbH filed Critical Mitsubishi HiTech Paper Flensburg GmbH
Publication of EP1813436A2 publication Critical patent/EP1813436A2/en
Publication of EP1813436A3 publication Critical patent/EP1813436A3/en
Withdrawn legal-status Critical Current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
    • 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
    • B41M5/327—Organic colour formers, e.g. leuco dyes with a lactone or lactam ring
    • B41M5/3275—Fluoran compounds
    • 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
    • B41M5/333—Colour developing components therefor, e.g. acidic compounds
    • B41M5/3333—Non-macromolecular compounds
    • 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
    • B41M5/333—Colour developing components therefor, e.g. acidic compounds
    • B41M5/3333—Non-macromolecular compounds
    • B41M5/3335—Compounds containing phenolic or carboxylic acid groups or metal salts thereof
    • 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
    • B41M5/333—Colour developing components therefor, e.g. acidic compounds
    • B41M5/3333—Non-macromolecular compounds
    • B41M5/3335—Compounds containing phenolic or carboxylic acid groups or metal salts thereof
    • B41M5/3336—Sulfur compounds, e.g. sulfones, sulfides, sulfonamides

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

Vorgeschlagen wird ein wärmeempfindliches Aufzeichnungsmaterial, umfassend
o ein Substrat
o und mindestens eine wärmeempfindliche Aufzeichnungsschicht, erhalten aus einer Beschichtungsmasse, die Farbstoffvorläufer und mindestens einen Farbentwickler enthält, welche bei Einwirkung von Wärme unter Ausbildung von Farbe in Form eines Druckbildes miteinander reagieren,

dadurch gekennzeichnet, dass
• die Beschichtungsmasse als Farbstoffvorläufer mindestens zwei verschiedene Substanzen aufweist,
- von denen eine erste Substanz mit dem mindestens einen Farbentwickler bei Einwirkung von Wärme unter Ausbildung einer ersten Farbe reagiert,
- von denen mindestens eine zweite Substanz mit dem mindestens einen Farbentwickler bei Einwirkung von Wärme unter Ausbildung mindestens einer zweiten Farbe reagiert, die von der ersten Farbe verschieden ist,

• das Druckbild in einer Farbe erscheint, die aus der ersten und der mindestens zweiten Farbe ausgebildet ist, wobei die Farbe des Druckbildes als Authentifikationsmerkmal einen Farbort aufweist, gekennzeichnet durch die Lab-Werte L*, a*, b* in den Bereichen L* = 24 % bis 35 %, a* = -1 bis 30, b* = -2 bis -60, bestimmt mit einem Elrepho 3000 (Lichtart D 65/10).Proposed is a heat-sensitive recording material comprising
o a substrate
o and at least one heat-sensitive recording layer obtained from a coating composition which contains dye precursors and at least one color developer which react with one another under the action of heat to form color in the form of a printed image,

characterized in that
• the coating composition as a dye precursor at least two different substances comprising,
of which a first substance reacts with the at least one color developer on exposure to heat to form a first color,
- of which at least one second substance reacts with the at least one color developer upon application of heat to form at least one second color other than the first color,

The print image appears in a color which is formed from the first and the at least second color, wherein the color of the print image has a color locus as an authentication feature, characterized by the Lab values L *, a *, b * in the ranges L * = 24% to 35%, a * = -1 to 30, b * = -2 to -60, determined with an Elrepho 3000 (illuminant D 65/10).

EP07000997A 2006-01-25 2007-01-18 Heat sensitive recording material comprising a feature for authentification Withdrawn EP1813436A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006003805 2006-01-25
DE102006032523A DE102006032523A1 (en) 2006-01-25 2006-07-12 Thermographic recording material having authentication characteristic, contains two or more color formers developing different colors to give image with specific coloristic properties

Publications (2)

Publication Number Publication Date
EP1813436A2 EP1813436A2 (en) 2007-08-01
EP1813436A3 true EP1813436A3 (en) 2008-03-12

Family

ID=37908370

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07000997A Withdrawn EP1813436A3 (en) 2006-01-25 2007-01-18 Heat sensitive recording material comprising a feature for authentification

Country Status (2)

Country Link
EP (1) EP1813436A3 (en)
DE (1) DE102006032523A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018133168B4 (en) * 2018-12-20 2021-02-18 Papierfabrik August Koehler Se Thermosensitive recording material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59190887A (en) * 1983-04-15 1984-10-29 Ricoh Co Ltd 2-color thermal recording material
EP0249885A2 (en) * 1986-06-17 1987-12-23 Kanzaki Paper Manufacturing Company Limited Heat-sensitive recording material
US4997741A (en) * 1987-05-29 1991-03-05 Fuji Photo Film Company Color image forming method using leuco dyes and recording material containing leuco dyes
EP0968837A1 (en) * 1998-07-03 2000-01-05 Nippon Paper Industries Co., Ltd. Thermally sensitive recording medium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59190887A (en) * 1983-04-15 1984-10-29 Ricoh Co Ltd 2-color thermal recording material
EP0249885A2 (en) * 1986-06-17 1987-12-23 Kanzaki Paper Manufacturing Company Limited Heat-sensitive recording material
US4997741A (en) * 1987-05-29 1991-03-05 Fuji Photo Film Company Color image forming method using leuco dyes and recording material containing leuco dyes
EP0968837A1 (en) * 1998-07-03 2000-01-05 Nippon Paper Industries Co., Ltd. Thermally sensitive recording medium

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 198449, Derwent World Patents Index; AN 1984-304468, XP002467119 *

Also Published As

Publication number Publication date
DE102006032523A1 (en) 2007-07-26
EP1813436A2 (en) 2007-08-01

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