DE19842866A1 - Thermographic material useful e.g. for travel ticket or receipt has (ir)regular pattern of reagent fluorescing in ultraviolet light and invisible in daylight as security mark on back - Google Patents
Thermographic material useful e.g. for travel ticket or receipt has (ir)regular pattern of reagent fluorescing in ultraviolet light and invisible in daylight as security mark on backInfo
- Publication number
- DE19842866A1 DE19842866A1 DE1998142866 DE19842866A DE19842866A1 DE 19842866 A1 DE19842866 A1 DE 19842866A1 DE 1998142866 DE1998142866 DE 1998142866 DE 19842866 A DE19842866 A DE 19842866A DE 19842866 A1 DE19842866 A1 DE 19842866A1
- Authority
- DE
- Germany
- Prior art keywords
- reagent
- heat
- recording material
- sensitive recording
- daylight
- 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- Withdrawn
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
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
- B41M3/144—Security printing using fluorescent, luminescent or iridescent effects
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
- D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
- D21H21/48—Elements suited for physical verification, e.g. by irradiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/04—Direct thermal recording [DTR]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/36—Backcoats; Back layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
-
- 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
-
- 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
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
- B41M5/423—Intermediate, backcoat, or covering layers characterised by non-macromolecular compounds, e.g. waxes
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)
- Paper (AREA)
Abstract
Description
Die Erfindung betrifft ein wärmeempfindliches Aufzeichnungsmaterial mit einem Sicherheitsmerkmal, aufweisend ein Trägerpapier mit einer auf einer Seite angeordneten Aufzeichnungsschicht, die unter Einwirkung von Wärme miteinander reagierende Farbbildner und organische Farbakzeptoren enthält.The invention relates to a heat-sensitive recording material with a Security feature, comprising a carrier paper with one on one side arranged recording layer under the action of heat contains reacting color formers and organic color acceptors.
Ein wärmeempfindliches Aufzeichnungsmaterial der vorstehend angegebenen Art ist aus der DE 195 01 289 A1 bekannt. Als Sicherheitsmerkmal enthält das bekannte wärmeempfindliche Aufzeichnungsmaterial fluoreszierende Fasern, die dem Papierfaserstoff vor der Blattbildung in geringer Menge zugemischt werden.A heat-sensitive recording material of the above Art is known from DE 195 01 289 A1. As a security feature, this includes known heat-sensitive recording material fluorescent fibers, which are added to the paper pulp in a small amount prior to sheet formation become.
Aus dem fälschungssichere Papiere, die gegebenenfalls beschichtet sind jedoch nicht wärmeempfindliche Aufzeichnungsmaterialien einschließenden betreffenden Stand der Technik ist auch die Verwendung einer Vielzahl von Reagenzien bekannt, die im Zusammenwirken mit anderen Substanzen eine Farbe bilden. Entsprechende Vorschläge finden sich in der DE 25 18 871 A1, wobei ein in das Papier oder auf die Oberfläche des Trägerpapiers aufgebrachter Azofarbstoff oder ein Pigment bei Kontaktierung mit einer geeigneten Substanz eine Echtheitsprüfung des verwendeten Papiers ermöglicht, und in der EP 0 072 481 B1, die auf die Reaktion einer Farbstoffverbindung auf Sulfonsäure-Basis mit Oxidations- bzw. Reduktionsmittel abstellt.From the forgery-proof papers, which may be coated but not including heat sensitive recording materials related prior art is also the use of a variety of Reagents known to interact with other substances Form color. Corresponding proposals can be found in DE 25 18 871 A1, being one in the paper or on the surface of the backing paper applied azo dye or pigment when contacted with a suitable substance, an authenticity check of the paper used enables, and in EP 0 072 481 B1, on the reaction of a Dye compound based on sulfonic acid with oxidation or Turns off reducing agent.
Soweit die bekannten Vorschläge die Echtheitsprüfung der verwendeten Papiere durch die Sichtbarmachung von Fluoreszenz mittels UV-Bestrahlungen ansprechen, geht es dabei um den relativ aufwendigen Einsatz fluoreszierender Fasern, der während der Produktion der Papierbahn zudem noch mit Problemen der Sortenreinheit bei der Verarbeitung des anfallenden Ausschusses verbunden ist oder aber um den Zusatz von fluoreszierenden Reagenzien zur Papiermasse, wo eine ungenügende Farbstoffretention zu in wirtschaftlicher Hinsicht nicht tolerierbaren Materialverlusten kommen kann. Zwar wurde auch bereits der Auftrag von unter UV-Bestrahlung fluoreszierenden Reagenzien als Oberflächenpräparation vorgeschlagen, jedoch offenbart der bekannte Stand der Technik keine über eine vollflächige, d. h. einheitliche Präparation hinausgehende Maßnahme.As far as the known proposals the authenticity check of the used Papers through the visualization of fluorescence using UV radiation appeal, it is about the relatively complex use of fluorescent Fibers, which also have problems during the production of the paper web the varietal purity in the processing of the resulting scrap is connected or to the addition of fluorescent reagents for Pulp where there is insufficient dye retention too in economical Considerable material losses can occur. True, too already the order of reagents fluorescent under UV radiation as Surface preparation proposed, but the known prior art discloses the technology does not have a full area, i.e. H. uniform preparation additional measure.
Die vorliegende Erfindung strebt nun die Entwicklung eines Sicherheitsmerkmales an, das weitaus deutlicher als eine zusammenhängende vollflächige Präparation eine Echtheitsprüfung des eingesetzten Papiers mit Hilfe einfacher und überall zur Verfügung stehender Einrichtungen ermöglicht. Eine weitere Aufgabe sieht die Erfindung darin, die Herstellung eines wärmeempfindlichen Aufzeichnungsmaterials mit einem Sicherheitsmerkmal unter Verzicht auf in die Papiermasse einzugebende Komponenten zu ermöglichen.The present invention now seeks to develop one Security feature that is much clearer than a coherent full-surface preparation with an authenticity check of the paper used Help of simple and everywhere available facilities. Another object of the invention is to produce a heat-sensitive recording material with a security feature dispensing with components to be entered into the paper pulp enable.
Die Lösung der vorstehenden Aufgabe wird ermöglicht, wenn bei einem wärmeempfindlichen Aufzeichnungsmaterial mit einem Sicherheitsmerkmal, aufweisend ein Trägerpapier mit einer auf einer Seite angeordneten Aufzeichnungsschicht, die unter Einwirkung von Wärme miteinander reagierende Farbbildner und organische Farbakzeptoren enthält, als Sicherheitsmerkmal ein unter UV-Bestrahlung fluoreszierendes Reagenz in regelmäßigem oder unregelmäßigem Muster auf die der Aufzeichnungsschicht gegenüberliegende Seite des Trägerpapiers aufgebracht ist, und das Muster bei Tageslicht unsichtbar ist.The solution to the above problem is made possible if one heat-sensitive recording material with a security feature, comprising a carrier paper with one arranged on one side Recording layer exposed to each other under the influence of heat contains reactive color formers and organic color acceptors, as Security feature a reagent fluorescent under UV radiation regular or irregular pattern on that of the recording layer opposite side of the carrier paper is applied, and the pattern at Daylight is invisible.
Im Gegensatz zu den bisher bekannten Ausführungsformen von Sicherheitspapieren, bei denen entweder durch den Eintrag entsprechender Reagenzien in die Faserstoffmasse oder durch Präparation eine vollflächig wirksame Fluoreszenz erreicht wurde, bietet das wärmeempfindliche Aufzeichnungspapier gemäß der vorliegenden Erfindung durch die Art seiner Musterung eine zusätzliche und nicht ohne weiteres nachzuahmende Sicherheitskomponente.In contrast to the previously known embodiments of Security papers where either by entering the appropriate Reagents in the pulp or by preparing a full area effective fluorescence has been achieved, the heat sensitive offers Recording paper according to the present invention by the nature of its Pattern an additional and not easily imitated Security component.
Eine unregelmäßige Musterbildung entspricht vorzugsweise einer feinkörnigen Struktur, die, anders ausgedrückt, als Sprenkelung bezeichnet werden kann. Bei Tageslicht sieht die mit dem Reagenz beaufschlagte Rückseite mit bloßem Auge betrachtet leicht gefärbt aus.An irregular pattern formation preferably corresponds to a fine-grained one Structure that, in other words, can be called speckling. At Daylight sees the rear of the reagent exposed to the bare Eye looks slightly colored.
Gemäß einer vorzugsweisen Ausführungsform hat sich eine flächenbezogene Masse des aufgebrachten Reagenz im Bereich von 0,01 bis 40 mg/m2, insbesondere von 0,05 bis 7,5 mg/m2 als geeignet erwiesen. Es wurde erkannt, daß wasseriösliche Farbstoffe als Reagenz im besonderen Maße geeignet sind, jedoch sind wasserunlösliche Pigmentfarbstoffe, sofern sie die Forderung nach unter UV-Bestrahlung auftretender Fluoreszenz erfüllen, ebenfalls geeignet. Hierbei ist im gleichen Maße zu beachten, daß das aufgebrachte Muster bei Tageslicht unsichtbar sein muß.According to a preferred embodiment, a mass per unit area of the reagent applied in the range from 0.01 to 40 mg / m 2 , in particular from 0.05 to 7.5 mg / m 2, has proven to be suitable. It has been recognized that water-soluble dyes are particularly suitable as a reagent, but water-insoluble pigment dyes are also suitable, provided they meet the requirement for fluorescence which occurs under UV radiation. It should be noted to the same extent that the pattern applied must be invisible in daylight.
Der Vorteil der wasserlöslichen Reagenzien besteht darin, daß sie ohne Bindemittel aufgebracht werden können. Als geeignete Reagenzien haben sich insbesondere Farbstoffe auf Pyrensulfonat-Basis gezeigt, insbesondere auch deswegen, weil eine weitere Sicherheitsprüfung mit dieser Farbstoffklasse durchgeführt werden kann, wenn durch Aufbringung einer alkalischen Substanz eine auch bei Tageslicht fluoreszierende Farbe entsteht.The advantage of the water-soluble reagents is that they are without Binder can be applied. They have proven to be suitable reagents especially dyes based on pyrene sulfonate shown, in particular also is because another security check with this class of dyes can be done if by applying an alkaline substance a color that also fluoresces in daylight is created.
Die nachfolgenden Beispiele erläutern die Erfindung.The following examples illustrate the invention.
Ein handelsübliches holzfreies Papier, das zur Herstellung von Sicherheitsbelegen, wie Fahrtausweisen oder Quittungsbelegen, vorgesehen ist, und eine flächenbezogene Masse von 65 g/m2 aufweist, wird rückseitig mit einer Stärkepräparation und vorderseitig mit einer zum Auftrag der wärmeempfindlichen Aufzeichnungsschicht vorgesehenen, im wesentlichen aus ölabsorbierendem Pigment und Bindemittel bestehenden Zwischenschicht versehen, wobei die Stärkepräparation einen Farbstoff auf Pyrensulfonat-Basis in gelöster Form enthält. Mit der Stärkepräparation wird ein Muster mit unregelmäßig geformten Streifen aufgetragen, wobei der Auftrag des Farbstoffes mit einer flächenbezogenen Masse von 3 mg/m2 erfolgt.A commercially available wood-free paper, which is intended for the production of security documents, such as travel documents or receipts, and has a mass per unit area of 65 g / m 2 , is essentially made on the back with a starch preparation and on the front with a layer provided for applying the heat-sensitive recording layer Oil-absorbing pigment and binder existing intermediate layer, the starch preparation contains a dye based on pyrene sulfonate in dissolved form. With the starch preparation, a pattern with irregularly shaped strips is applied, the dye being applied with a mass per unit area of 3 mg / m 2 .
Entsprechend Beispiel 1 wird ein wärmeempfindliches Aufzeichnungsmaterial hergestellt, wobei jedoch im Unterschied zu Beispiel 1 zunächst auf die Rückseite eine Stärkepräparation ohne Pyrensulfonat-Beimengung aufgebracht wird. Auf die getrocknete Stärkepräparation wird anschließend mittels einer wässrigen Lösung eines Farbstoffes auf Pyrensulfonat-Basis ein unregelmäßiges Muster in der Art einer feinkörnigen Struktur aufgebracht. Die flächenbezogene Masse des aufgebrachten Farbstoffes beträgt 2,8 mg/m2.A heat-sensitive recording material is produced in accordance with Example 1, but in contrast to Example 1, a starch preparation without pyrene sulfonate addition is first applied to the back. An irregular pattern in the manner of a fine-grained structure is then applied to the dried starch preparation by means of an aqueous solution of a pyrene sulfonate-based dye. The mass per unit area of the dye applied is 2.8 mg / m 2 .
Bei Betrachtung der nach den vorstehenden Beispielen hergestellten Papiere unter UV-Bestrahlung von 254 nm zeigen sich die angegebenen Muster in grünlicher Farbgebung, unter UV-Bestrahlung von 360 nm ist das Muster in bläulicher Farbe zu erkennen. Bei Tageslicht weisen die Papiere rückseitig eine mit bloßem Auge schwach sichtbare Färbung auf.When considering the papers produced according to the above examples under UV radiation of 254 nm, the specified patterns are shown in greenish coloring, under UV radiation of 360 nm the pattern is in recognizable bluish color. In daylight, the papers show on the back the color is slightly visible to the naked eye.
Claims (7)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998142866 DE19842866A1 (en) | 1998-09-19 | 1998-09-19 | Thermographic material useful e.g. for travel ticket or receipt has (ir)regular pattern of reagent fluorescing in ultraviolet light and invisible in daylight as security mark on back |
ES99944434T ES2181470T3 (en) | 1998-09-19 | 1999-08-19 | REGISTRATION MATERIALS SENSITIVE TO HEAT AND PROCEDURE FOR THE AUTHENTICITY TEST. |
US09/554,788 US6632773B1 (en) | 1998-09-19 | 1999-08-19 | Heat-sensitive recording materials and method for authenticity checking |
AT99944434T ATE220997T1 (en) | 1998-09-19 | 1999-08-19 | HEAT SENSITIVE RECORDING MATERIALS AND METHODS FOR AUTHENTICITY VERIFICATION |
PCT/EP1999/006060 WO2000016986A1 (en) | 1998-09-19 | 1999-08-19 | Heat-sensitive recording materials and method for authenticity checking |
JP2000573922A JP4372353B2 (en) | 1998-09-19 | 1999-08-19 | Thermosensitive recording material and method for testing reliability |
EP99944434A EP1032498B1 (en) | 1998-09-19 | 1999-08-19 | Heat-sensitive recording materials and method for authenticity checking |
DE59902110T DE59902110D1 (en) | 1998-09-19 | 1999-08-19 | HEAT SENSITIVE RECORDING MATERIALS AND AUTHENTICITY TEST METHOD |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998142866 DE19842866A1 (en) | 1998-09-19 | 1998-09-19 | Thermographic material useful e.g. for travel ticket or receipt has (ir)regular pattern of reagent fluorescing in ultraviolet light and invisible in daylight as security mark on back |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19842866A1 true DE19842866A1 (en) | 2000-03-30 |
Family
ID=7881451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1998142866 Withdrawn DE19842866A1 (en) | 1998-09-19 | 1998-09-19 | Thermographic material useful e.g. for travel ticket or receipt has (ir)regular pattern of reagent fluorescing in ultraviolet light and invisible in daylight as security mark on back |
Country Status (1)
Country | Link |
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DE (1) | DE19842866A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10020873A1 (en) * | 2000-04-28 | 2001-11-08 | Mitsubishi Hitec Paper Flensbu | Temporary authentification mark for security documents uses a substituted phthalide reacting on contact with an alkaline solution, together with a volatile solvent |
WO2003082596A1 (en) * | 2002-03-29 | 2003-10-09 | Dall Ara Paolo | Method for producing a recording medium that can be verified for its authenticity and recording medium thereby obtained |
WO2010119089A1 (en) * | 2009-04-15 | 2010-10-21 | Sension Biologische Detektions- Und Schnelltestsysteme Gmbh | Heat-sensitive recording material having a security feature |
WO2011067004A1 (en) * | 2009-12-01 | 2011-06-09 | Mitsubishi Hitec Paper Europe Gmbh | Heat-sensitive recording material with barrier coating |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0844097A1 (en) * | 1996-11-21 | 1998-05-27 | Ncr International Inc. | Thermal paper with security features and security ink therefor |
-
1998
- 1998-09-19 DE DE1998142866 patent/DE19842866A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0844097A1 (en) * | 1996-11-21 | 1998-05-27 | Ncr International Inc. | Thermal paper with security features and security ink therefor |
Non-Patent Citations (1)
Title |
---|
ULLMANN: Encyklopädie der technischen Chemie, 4. Aufl., Bd. 17, S. 471-472 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10020873A1 (en) * | 2000-04-28 | 2001-11-08 | Mitsubishi Hitec Paper Flensbu | Temporary authentification mark for security documents uses a substituted phthalide reacting on contact with an alkaline solution, together with a volatile solvent |
WO2003082596A1 (en) * | 2002-03-29 | 2003-10-09 | Dall Ara Paolo | Method for producing a recording medium that can be verified for its authenticity and recording medium thereby obtained |
WO2010119089A1 (en) * | 2009-04-15 | 2010-10-21 | Sension Biologische Detektions- Und Schnelltestsysteme Gmbh | Heat-sensitive recording material having a security feature |
WO2011067004A1 (en) * | 2009-12-01 | 2011-06-09 | Mitsubishi Hitec Paper Europe Gmbh | Heat-sensitive recording material with barrier coating |
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Legal Events
Date | Code | Title | Description |
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OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: MITSUBISHI HITEC PAPER FLENSBURG GMBH, 24941 FLENS |
|
8130 | Withdrawal |