EP0213122B1 - Optically codable ticket in the form of a surface - Google Patents

Optically codable ticket in the form of a surface Download PDF

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Publication number
EP0213122B1
EP0213122B1 EP85901291A EP85901291A EP0213122B1 EP 0213122 B1 EP0213122 B1 EP 0213122B1 EP 85901291 A EP85901291 A EP 85901291A EP 85901291 A EP85901291 A EP 85901291A EP 0213122 B1 EP0213122 B1 EP 0213122B1
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EP
European Patent Office
Prior art keywords
thermal
protective layer
film
ticket
layer
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Expired
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EP85901291A
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German (de)
French (fr)
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EP0213122B2 (en
EP0213122A1 (en
Inventor
Wolfram Kocznar
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Skidata AG
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Skidata AG
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Priority claimed from AT322884A external-priority patent/AT397636B/en
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    • 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
    • B41M5/405—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 characterised by layers cured by radiation
    • 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
    • B41M5/267—Marking of plastic artifacts, e.g. with laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0045—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or film forming compositions cured by mechanical wave energy, e.g. ultrasonics, cured by electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams, or cured by magnetic or electric fields, e.g. electric discharge, plasma

Definitions

  • Thermally inscribable materials are usually used in the form of papers provided with a thermal layer. This thermal paper is processed in thermal printers, whereby a brief change in the temperature of the thermal layer produces a color change and so fonts or graphics.
  • the advantages of thermal labeling are, above all, the low noise level and the high printing speed when displaying graphics of any design.
  • thermal lettering Disadvantages of thermal lettering are the low light fastness and the chemical sensitivity of the fonts generated.
  • a protective layer In order to improve the resistance of the thermal inscription to chemical influences, in particular to water, oil, plasticizers and organic solvents, it is known to apply a protective layer to the thermal layer.
  • this protective layer consists of polyvinyl alcohol, which is also mostly used as a binder for the thermoreactive substances when the thermal layer is applied.
  • DE-A-3312716 describes a method in which a protective layer is formed over a thermal layer and has been cured with an electron beam.
  • JP-A-56 67 293 is also mentioned in the publication mentioned.
  • a comparative example No. 6 is described in DE-A-3312 716, in which a UV varnish was applied as a protective layer to a heat-sensitive recording paper. This UV varnish was irradiated for 10 seconds using an 80 W high-pressure mercury lamp and thereby cured. Color images were produced on the thermal paper thus produced using a tester with a temperature of 130 ° C and 10 seconds of exposure. These color images had an initial image density of 1.15 and a background density of 0.20.
  • the invention was based on the object, a as a ticket, ID card or the like. to create usable material, i.e. a card, the optical coding of which is carried out separately from the time and place of manufacture.
  • the optical coding should be resistant to chemical stress and have excellent light fastness.
  • the material should be able to be used in a coding device which is designed to be as simple and maintenance-free as possible due to a possibly exposed installation location.
  • an optically encodable, sheet-like ticket consisting of a base body which is provided on at least one side with a thermal layer and a protective layer covering the thermal layer, the ticket being optically encodable by the thermal layer being passed through the protective layer by means of a thermal printer heatable for a short time so that a color change can be achieved, and the protective layer being a UV lacquer (acrylic polymer) hardened by UV radiation.
  • the invention is based on the consideration that the expected properties of the optical coding can only be achieved if a protective layer is formed over the thermal layer.
  • a protective layer is formed over the thermal layer.
  • the thermal layer is heated through the protective layer, i.e. that the ticket is already inserted into the coding device as a finished blank and optically coded.
  • UV lacquer is eminently suitable for forming a protective layer if, when applied, the UV lacquer is prevented from penetrating into the thermal layer and thus impairing its ability to form colors. This can be achieved by applying the highest possible radiation energy to the UV varnish and the shortest possible time. Due to the hardening immediately after application within fractions of a second, premature discoloration of the thermal layer is prevented, since the thermal layer is protected by the thermal inertia of the base body.
  • an optically coded ticket produced in this way has practically 100% resistance to water, plasticizers, oils, fats, solvents and the like.
  • the light fastness is also significantly improved.
  • the protective layer consists of at least two thin films.
  • the film adjacent to the thermal layer can be optimized with regard to good adhesion and chemical compatibility with the thermal layer, during which the surface to be labeled che or the film facing the thermal printer can be optimized with regard to chemical resistance, heat resistance and the other properties caused by the thermal printer.
  • the outer film of the protective layer contains a lubricant.
  • a silicone oil or a silicone resin is particularly suitable in an amount of 1-10% of the film weight.
  • the basic body of the ticket is a plastic film, so that the thermal layer is also protected against chemical stress from the back.
  • the film adjacent to the thermal layer is applied in a viscous or pasty form in order to prevent penetration into the thermal layer. This maintains the optimal ability of the thermal layer to form colors.
  • the second film of the protective layer can now be applied as a low-viscosity UV varnish mixed with a silicone oil or a silicone resin as a lubricant for the thermal printer.
  • the barrier effect of the first film prevents the thermal layer from being impaired in particular by the silicone oil or silicone resin.
  • this manufacturing process enables the ticket to be printed safely by applying the printing inks between the first and the second film of the protective layer.
  • the ticket is protected against the thermal layer being adversely affected by the printing inks.
  • the protective layer is preferably applied in a high-pressure process, in particular in direct or indirect letterpress printing, and cured by UV radiation.
  • This process has the advantage that the UV varnish can be applied in a viscous or pasty form with low application weights, and that a closed, non-porous film is nevertheless produced.
  • the second film of the protective layer is only applied selectively to parts of the surface.
  • the optically encodable material uses a homogeneous PVC film as the base body 1.
  • Other materials can also be used for this, for example films made of polyester, polyethylene or tear-resistant or synthetic papers.
  • the thermal layer 3 On one side of this base body, which was applied in a coating process with subsequent air drying.
  • the thermal layer usually consists of a waterproof binder in which thermoreactive substances are embedded.
  • a protective layer is applied to the thermal layer 3.
  • This protective layer consists of two thin films 4 and 5.
  • the film 4 lying directly on the thermal layer is advantageously applied over the entire area with an offset printing machine in indirect letterpress printing and cured by UV radiation. Since the time between application and curing is relatively short (fractions of a second), there is practically no impairment of the thermal layer.
  • the UV varnish is applied in a viscous or pasty form in order to prevent penetration into the thermal layer.
  • the order quantities are advantageously between one and five grams per square meter.
  • a second film 5 is then applied to this first film 4 of the protective layer, which in turn consists of a UV lacquer.
  • This varnish for the second film 5 contains 1% to 5% silicone oil or silicone resin in order to achieve a water-repellent effect and to improve the sliding properties of the thermal print head.
  • the second film 5 of the protective layer can be selectively applied to the surface, for example with a ballpoint pen, pencil or the like. to create writable surfaces by not coating these surfaces with the second film 5.
  • the UV varnishes are usually applied transparently. However, transparent coloring is also possible.
  • the printing inks are applied between the first film 4 and the second film 5 of the protective layer.
  • Such a ticket can be easily labeled or labeled using conventional thermal printers.
  • the thermally generated lettering is very durable and insensitive to oils, greases and solvents (e.g. alcohol or acetone).
  • the light fastness is also significantly improved.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)
  • Laminated Bodies (AREA)

Abstract

An optically codable material in the form of a surface, which is provided at least on one side with a thermal coating. By point-like heating of the thermal coating optical readable symbols or graphs can be produced. To improve the stability of said symbols, in particular when subjected to environmental influences of a chemical and mechanical nature, the thermal coating is covered by an UV laquer (acrylic polymerisate). The basic support consists of PVC foil.

Description

Thermisch beschriftbare Materialien verwendet man üblicherweise in Form von mit einer Thermoschicht versehenen Papieren. Dieses Thermopapier wird in Thermodruckern verarbeitet, wobei durch kurzzeitiges Erhitzen der Thermoschicht ein Farbumschlag und so Schriften oder Grafiken erzeugt werden. Vorteile der Thermobeschriftung sind vor allem die geringe Geräuschentwicklung und die hohe Druckgeschwindigkeit bei der Darstellung von grafisch beliebig gestalteten Drucken.Thermally inscribable materials are usually used in the form of papers provided with a thermal layer. This thermal paper is processed in thermal printers, whereby a brief change in the temperature of the thermal layer produces a color change and so fonts or graphics. The advantages of thermal labeling are, above all, the low noise level and the high printing speed when displaying graphics of any design.

Nachteile der Thermobeschriftung sind die geringe Lichtechtheit sowie die chemische Empfindlichkeit der erzeugten Schriften. Um die Beständigkeit der Thermobeschriftung gegen chemische Einflüsse, insbesondere gegen Wasser, Öl, Weichmacher und organische Lösungsmittel zu verbessern, ist es bekannt, auf die Thermoschicht eine Schutzschichte aufzubringen.Disadvantages of thermal lettering are the low light fastness and the chemical sensitivity of the fonts generated. In order to improve the resistance of the thermal inscription to chemical influences, in particular to water, oil, plasticizers and organic solvents, it is known to apply a protective layer to the thermal layer.

In einem bekannten Fall besteht diese Schutzschichte aus Polyvinylalkohol, welcher auch meist bei der Aufbringung der Thermoschicht als Bindemittel für die thermoreaktiven Substanzen verwendet wird.In a known case, this protective layer consists of polyvinyl alcohol, which is also mostly used as a binder for the thermoreactive substances when the thermal layer is applied.

Man erreicht dadurch jedoch nur eine geringfügige Verbesserung der chemischen Beständigkeit. Weitere Probleme sind, dass bei der Aufbringung des Deckstriches schwierige Bedingungen herrschen, da das Thermopapier ein zweites Mal in der Beschichtungsmaschine durch einen Trockenkanal geführt werden muss. Bei dieser Trocknung besteht die Gefahr, dass die Thermoschicht durch Überhitzung zerstört wird.However, this only leads to a slight improvement in chemical resistance. Further problems are that there are difficult conditions when applying the top coat, since the thermal paper has to be passed through a drying tunnel a second time in the coating machine. With this drying there is a risk that the thermal layer will be destroyed by overheating.

In der DE-A-3312716 ist ein Verfahren beschrieben, bei der über einer Thermoschicht eine Schutzschichte gebildet wird, welche mit einem Elektronenstrahl ausgehärtet worden ist.DE-A-3312716 describes a method in which a protective layer is formed over a thermal layer and has been cured with an electron beam.

Ein derartiges Beschichtungsverfahren ist nur mit einem beträchtlichen apparativen Aufwand und entsprechenden Schutzmassnahmen für das Bedienungspersonal durchzuführen.Such a coating process can only be carried out with considerable expenditure on equipment and corresponding protective measures for the operating personnel.

In der genannten Veröffentlichung ist auch die JP-A-56 67 293 erwähnt. Darin ist ein Verfahren beschrieben, bei dem nach der optischen Codierung der Themoschicht, d.h. also nach der Einfärbung derselben, auf die Thermoschicht ein UV-Lack aufgetragen und als Schutzschicht ausgehärtet wird. Als Nachteile dieses Verfahrens werden genannt, dass die Strahlungswärme einer UV-Lampe unerwünschte Farbe auf der Thermoschicht erzeugen kann, der UV-Lack nur eine geringe Beständigkeit besitzt, lange Zeit zur Härtung benötigt und einem so hergestellten Produkt ein starker Geruch anhaftet.JP-A-56 67 293 is also mentioned in the publication mentioned. This describes a method in which, after the optical coding of the subject layer, i.e. So after coloring them, a UV varnish is applied to the thermal layer and cured as a protective layer. Disadvantages of this method are mentioned that the radiant heat of a UV lamp can produce undesirable color on the thermal layer, the UV varnish has only a low resistance, requires a long time to harden and a strong smell adheres to a product produced in this way.

In der DE-A-3312 716 ist ein Vergleichsbeispiel Nr. 6 beschrieben, bei dem auf ein wärmeempfindliches Aufzeichnungspapier ein UV-Lack als Schutzschichte aufgetragen wurde. Dieser UV-Lack wurde für 10 Sekunden unter Verwendung einer 80-W-Hochdruck-Quecksilberlampe bestrahlt und dadurch ausgehärtet. Auf dem so hergestellten Thermopapier wurden Farbbilder unter Verwendung eines Testgerätes mit einerTemperatur von 130°C und 10 Sekunden Einwirkungsdauer erzeugt. Diese Farbbilder wiesen eine Anfangsbilddichte von 1,15 und eine Hintergrunddichte von 0,20 auf.A comparative example No. 6 is described in DE-A-3312 716, in which a UV varnish was applied as a protective layer to a heat-sensitive recording paper. This UV varnish was irradiated for 10 seconds using an 80 W high-pressure mercury lamp and thereby cured. Color images were produced on the thermal paper thus produced using a tester with a temperature of 130 ° C and 10 seconds of exposure. These color images had an initial image density of 1.15 and a background density of 0.20.

Der Erfindung lag die Aufgabe zugrunde, ein als Ticket, Ausweiskarte od.dgl. verwendbares Material zu schaffen, d.h. eine Karte, deren optische Codierung zeitlich und örtlich von der Herstellung getrennt erfolgt. Die optische Codierung soll gegenüber chemischen Beanspruchungen beständig sein und eine ausgezeichnete Lichtechtheit aufweisen. Weiters soll das Material in eine Codiereinrichtung einsetzbar sein, die auf Grund eines gegebenenfalls exponierten Aufstellungsortes möglichst einfach und wartungsfrei ausgebildet ist.The invention was based on the object, a as a ticket, ID card or the like. to create usable material, i.e. a card, the optical coding of which is carried out separately from the time and place of manufacture. The optical coding should be resistant to chemical stress and have excellent light fastness. Furthermore, the material should be able to be used in a coding device which is designed to be as simple and maintenance-free as possible due to a possibly exposed installation location.

Gelöst wird diese Aufgabe durch ein optisch codierbares, flächenförmiges Ticket, bestehend aus einem Grundkörper, welcher zumindest einseitig mit einer Thermoschichte und einer die Thermoschichte abdeckenden Schutzschichte versehen ist, wobei das Ticket dadurch optisch codierbar ist, dass die Thermoschichte mittels eines Thermodruckers durch die Schutzschichte hindurch kurzzeitig erhitzbar und so ei:n Farbumschlag erzielbar ist, und wobei die Schutzschichte ein durch UV-Bestrahlung ausgehärteter UV-Lack (Acrylpolymerisat) ist.This object is achieved by an optically encodable, sheet-like ticket, consisting of a base body which is provided on at least one side with a thermal layer and a protective layer covering the thermal layer, the ticket being optically encodable by the thermal layer being passed through the protective layer by means of a thermal printer heatable for a short time so that a color change can be achieved, and the protective layer being a UV lacquer (acrylic polymer) hardened by UV radiation.

Die Erfindung geht von der Überlegung aus, dass die erwarteten Eigenschaften der optischen Codierung nur bei Bildung einer Schutzschichte über der Thermoschichte erzielt werden können. Um eine einfache Ausbildung der Codiereinrichtung sicherzustellen, ist es erforderlich, dass die Thermoschichte durch die Schutzschichte hindurch erhitzt wird, d.h. dass das Ticket bereits als fertiger Rohl'ing in die Codiereinrichtung eingeführt und optisch codiert wird.The invention is based on the consideration that the expected properties of the optical coding can only be achieved if a protective layer is formed over the thermal layer. In order to ensure a simple design of the coding device, it is necessary that the thermal layer is heated through the protective layer, i.e. that the ticket is already inserted into the coding device as a finished blank and optically coded.

Weiters hat die Erfindung unter Überwindung des vorstehend genannten Vorurteils erkannt, dass zur Bildung einer Schutzschichte ein UV-Lack dann hervorragend geeignet ist, wenn bei der Auftragung desselben verhindert wird, dass der UV-Lack in dieThermoschichte eindringt und so deren Farbbildungsfähigkeit beeinträchtigt. Dies kann durch Beaufschlagung des UV-Lackes mit höchstmöglicher Bestrahlungsenergie und kürzester Zeitdauer erreicht werden. Durch die unmittelbar an die Auftragung anschliessende Aushärtung innerhalb Bruchteilen von Sekunden wird auch eine vorzeitige Verfärbung der Thermoschicht verhindert, da die Thermoschicht durch ihre Wärmeträgheit des Grundkörpers geschützt ist.Furthermore, while overcoming the above-mentioned prejudice, the invention recognized that UV lacquer is eminently suitable for forming a protective layer if, when applied, the UV lacquer is prevented from penetrating into the thermal layer and thus impairing its ability to form colors. This can be achieved by applying the highest possible radiation energy to the UV varnish and the shortest possible time. Due to the hardening immediately after application within fractions of a second, premature discoloration of the thermal layer is prevented, since the thermal layer is protected by the thermal inertia of the base body.

Insbesondere weist ein so hergestelltes, optisch codiertes Ticket eine praktisch hundertprozentige Beständigkeit gegenüber Wasser, Weichmacher, Ölen, Fetten, Lösungsmitteln und dergleichen auf. Auch die Lichtechtheit ist wesentlich verbessert.In particular, an optically coded ticket produced in this way has practically 100% resistance to water, plasticizers, oils, fats, solvents and the like. The light fastness is also significantly improved.

Nach einer weiteren Ausgestaltung der Erfindung ist vorgesehen, dass die Schutzschichte aus zumindest zwei dünnen Filmen besteht. Dadurch kann der an die Thermoschichte angrenzende Film im Hinblick auf gute Haftung und chemische Verträglichkeit mit der Thermoschichte optimiert werden, während der der zu beschriftenden Oberfläche bzw. dem Thermodrucker zugewandte Film im Hinblick auf chemische Beständigkeit, Hitzefestigkeit und die sonstigen vom Thermodrucker bedingten Eigenschaften optimiert werden kann.According to a further embodiment of the invention, it is provided that the protective layer consists of at least two thin films. As a result, the film adjacent to the thermal layer can be optimized with regard to good adhesion and chemical compatibility with the thermal layer, during which the surface to be labeled che or the film facing the thermal printer can be optimized with regard to chemical resistance, heat resistance and the other properties caused by the thermal printer.

Von Vorteil ist, wenn der aussenliegende Film der Schutzschichte ein Gleitmittel enthält. Besonders geeignet ist ein Siliconöl oder ein Siliconharz in einer Menge von 1 -10% des Filmgewichtes.It is advantageous if the outer film of the protective layer contains a lubricant. A silicone oil or a silicone resin is particularly suitable in an amount of 1-10% of the film weight.

Weiters ist es von Vorteil, wenn der Grundkörper des Tickets eine Kunststoffolie ist, so dass die Thermoschichte auch von der Rückseite her gegenüber chemischen Beanspruchungen geschützt ist.Furthermore, it is advantageous if the basic body of the ticket is a plastic film, so that the thermal layer is also protected against chemical stress from the back.

Nach einem bevorzugten Verfahren zur Herstellung des Tickets ist vorgesehen, dass der an die Thermoschichte angrenzende Film in zähflüssiger oder pastöser Form aufgetragen wird, um ein Eindringen in die Thermoschichtzu verhindern. Damit wird die optimale Fähigkeit der Thermoschicht zur Farbbildung erhalten.According to a preferred method for producing the ticket, it is provided that the film adjacent to the thermal layer is applied in a viscous or pasty form in order to prevent penetration into the thermal layer. This maintains the optimal ability of the thermal layer to form colors.

Der zweite Film der Schutzschichte kann nun als dünnflüssiger, mit einem Siliconöl oder einem Siliconharz als Gleitmittel für den Thermodrucker versetzter UV-Lack aufgetragen werden. Durch die Sperrwirkung des ersten Filmes wird verhindert, dass die Thermoschicht insbesondere durch das Siliconöl oder Siliconharz beeinträchtigt wird.The second film of the protective layer can now be applied as a low-viscosity UV varnish mixed with a silicone oil or a silicone resin as a lubricant for the thermal printer. The barrier effect of the first film prevents the thermal layer from being impaired in particular by the silicone oil or silicone resin.

Weiters ermöglicht dieses Herstellungsverfahren, dass das Ticket gefahrlos bedruckt werden kann, indem die Druckfarben zwischen dem ersten und dem zweiten Film der Schutzschichte aufgebracht werden. Das Ticket ist bei der Bedruckung durch den ersten Film gegen eine Beeinträchtigung der Thermoschichte durch die Druckfarben geschützt.Furthermore, this manufacturing process enables the ticket to be printed safely by applying the printing inks between the first and the second film of the protective layer. When printed by the first film, the ticket is protected against the thermal layer being adversely affected by the printing inks.

Bevorzugt wird die Schutzschichte in einem Hochdruckverfahren, insbesondere im direkten oder indirekten Buchdruck aufgetragen und durch UV-Bestrahlung ausgehärtet. Dieses Verfahren hat den Vorteil, dass der UV-Lack in zähflüssiger oder pastöser Form mit niedrigen Auftragsgewichten aufgetragen werden kann, und dass trotzdem ein geschlossener, porenfreier Film entsteht.The protective layer is preferably applied in a high-pressure process, in particular in direct or indirect letterpress printing, and cured by UV radiation. This process has the advantage that the UV varnish can be applied in a viscous or pasty form with low application weights, and that a closed, non-porous film is nevertheless produced.

Weiters ist nach einer bevorzugten Ausführungsform vorgesehen, dass der zweite Film der Schutzschichte nur selektiv an Teilen der Oberfläche aufgetragen wird.Furthermore, it is provided according to a preferred embodiment that the second film of the protective layer is only applied selectively to parts of the surface.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispieles näher erläutert, das die Herstellung von mittels Thermodruckern beschrifteten Tickets, Ausweiskarten oder ähnlichem beschreibt.The invention is explained in more detail below on the basis of an exemplary embodiment which describes the production of tickets, identity cards or the like labeled by means of thermal printers.

Das optisch codierbare Material verwendet als Grundkörper 1 eine homogene PVC-Folie. Es sind auch andere Materialien hiefür einsetzbar, beispielsweise Folien aus Polyester, Polyäthylen oder reissfeste bzw. synthetische Papiere.The optically encodable material uses a homogeneous PVC film as the base body 1. Other materials can also be used for this, for example films made of polyester, polyethylene or tear-resistant or synthetic papers.

Auf diesem Grundkörper befindet sich einseitig eine Thermoschicht 3, welche in einem Streichverfahren mit anschliessender Lufttrocknung aufgebracht wurde. Die Thermoschicht besteht in der Regel aus einem wasserfesten Bindemittel, in wel - chem thermoreaktive Substanzen eingelagertsind.There is a thermal layer 3 on one side of this base body, which was applied in a coating process with subsequent air drying. The thermal layer usually consists of a waterproof binder in which thermoreactive substances are embedded.

Auf die Thermoschicht 3 ist eine Schutzschicht aufgebracht. Diese Schutzschicht besteht aus zwei dünnen Filmen 4 und 5. Der unmittelbar auf der Thermoschicht aufliegende Film 4 wird vorteilhaft mit einer Offset-Druckmaschine im indirekten Buchdruck ganzflächig aufgetragen und durch UV-Strahlung ausgehärtet. Da die Zeit zwischen Auftragung und Aushärtung relativ kurz ist (Bruchteile von Sekunden), tritt praktisch keine Beeinträchtigung der Thermoschicht ein.A protective layer is applied to the thermal layer 3. This protective layer consists of two thin films 4 and 5. The film 4 lying directly on the thermal layer is advantageously applied over the entire area with an offset printing machine in indirect letterpress printing and cured by UV radiation. Since the time between application and curing is relatively short (fractions of a second), there is practically no impairment of the thermal layer.

Hiezu ist es vorteilhaft, wenn der UV-Lack in zähflüssiger oder pastöser Form aufgetragen wird, um ein Eindringen in dieThermoschichtzu verhindern. Die Auftragsmengen liegen vorteilhaft zwischen ein und fünf Gramm pro Quadratmeter.For this it is advantageous if the UV varnish is applied in a viscous or pasty form in order to prevent penetration into the thermal layer. The order quantities are advantageously between one and five grams per square meter.

Auf diesen ersten Film 4 der Schutzschichte wird nun ein zweiter Film 5 aufgetragen, welcher wiederum aus einem UV-Lack besteht. Dieser Lack für den zweiten Film 5 enthält 1 % bis 5% Siliconöl oder Siliconharz, um eine wasserabweisende Wirkung zu erzielen und die Gleiteigenschaften des Thermodruckkopfes zu verbessern.A second film 5 is then applied to this first film 4 of the protective layer, which in turn consists of a UV lacquer. This varnish for the second film 5 contains 1% to 5% silicone oil or silicone resin in order to achieve a water-repellent effect and to improve the sliding properties of the thermal print head.

Den zweiten Film 5 der Schutzschicht kann man selektiv auf die Oberfläche auftragen, um beispielsweise gezielt mit Kugelschreiber, Bleistift od.dgl. beschriftbare Flächen zu schaffen, indem diese Flächen nicht mit dem zweiten Film 5 beschichtet werden. Die UV-Lacke werden in der Regel transparent aufgetragen. Es ist aber auch eine transparente Einfärbung möglich.The second film 5 of the protective layer can be selectively applied to the surface, for example with a ballpoint pen, pencil or the like. to create writable surfaces by not coating these surfaces with the second film 5. The UV varnishes are usually applied transparently. However, transparent coloring is also possible.

Soll das optisch codierbare Ticket beispielsweise farbig bedruckt werden, so werden die Druckfarben zwischen dem ersten Film 4 und dem zweiten Film 5 der Schutzschichte aufgebracht.If the optically encodable ticket is to be printed in color, for example, the printing inks are applied between the first film 4 and the second film 5 of the protective layer.

Ein derartausgebildetesTicket lässt sich mit herkömmlichen Thermodruckern problemlos kennzeichnen oder beschriften. Die thermisch erzeugte Beschriftung ist sehr beständig und gegen Öle, Fette und Lösemittel (beispielsweise Alkohol oder Aceton) unempfindlich. Auch die Lichtechtheit ist wesentlich verbessert.Such a ticket can be easily labeled or labeled using conventional thermal printers. The thermally generated lettering is very durable and insensitive to oils, greases and solvents (e.g. alcohol or acetone). The light fastness is also significantly improved.

Claims (7)

1. An optically codable ticket in sheet form comprising a main body which is provided on at least one side with a thermal layer and a protective layer covering the thermal layer, wherein the ticket is optically codable in that the thermal layer can be briefly heated through the protective layer by means of a thermal printer and in that way a change in colour can be produced, and wherein the protective layer is a UV-Iacquer (acrylic polymer, 4,5) which is cured by UV-irradiation.
2. A ticket according to Claim 1, characterised in that the protective layer comprises at least two thin films (4, 5).
3. A ticket according to Claim 1 or Claim 2, characterised in that an outer film (5) of the protective layer contains a lubricant, preferably a silicone oil or silicone resin, in an amount of from 1 % to.1 0% of the weight of the film.
4. A ticket according to one of Claims 1 to 3, characterised in that the main body (1) is a plastic foil, in particular a PVC foil.
5. A method of manufacturing an optically codable ticket according to one of Claims 1 to 4, characterised in that the protective layer is applied in a high-pressure process, in particular in direct or indirect printing, and is immediately thereafter cured by UV-irradiation.
6. A method according to Claim 5, characterised in that a first film in the form of a pasty UV-Iacquer is applied, preferably with a weight in relation to surface area of from 1 to 3 g/m2, and that a second film in the form of a UV-Iacquer which is mixed with a lubricant is applied, preferably with a weight of application of from 2 to 5 g/m2.
7. A method according to Claim 6, characterised in that the second film is only selectively applied to parts of the surface.
EP85901291A 1984-04-16 1985-04-16 Optically codable ticket in the form of a surface Expired - Lifetime EP0213122B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT126084 1984-04-16
AT1260/84 1984-04-16
AT3228/84 1984-10-11
AT322884A AT397636B (en) 1984-10-11 1984-10-11 Thermally printable material

Publications (3)

Publication Number Publication Date
EP0213122A1 EP0213122A1 (en) 1987-03-11
EP0213122B1 true EP0213122B1 (en) 1988-03-09
EP0213122B2 EP0213122B2 (en) 1992-06-17

Family

ID=25595342

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Application Number Title Priority Date Filing Date
EP85901291A Expired - Lifetime EP0213122B2 (en) 1984-04-16 1985-04-16 Optically codable ticket in the form of a surface

Country Status (4)

Country Link
EP (1) EP0213122B2 (en)
AT (1) ATE32850T1 (en)
DE (1) DE3561792D1 (en)
WO (1) WO1985004842A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69202433T2 (en) * 1991-05-06 1995-09-14 Polaroid Corp IMAGE RECORDING AGENT WITH BLADDER SUPPRESSION LAYER.
DE10341168A1 (en) 2003-09-06 2005-04-07 Mitsubishi Hitec Paper Flensburg Gmbh Heat-sensitive recording material and its use
US9024986B2 (en) * 2006-03-07 2015-05-05 Ncr Corporation Dual-sided thermal pharmacy script printing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5436506B2 (en) † 1972-06-06 1979-11-09
JPS5835478B2 (en) † 1977-06-10 1983-08-02 本州製紙株式会社 heat sensitive recording material
US4484204A (en) * 1982-04-10 1984-11-20 Kanzaki Paper Manufacturing Co., Ltd. Heat-sensitive record material
JPS59103793A (en) † 1982-08-18 1984-06-15 Toa Paint Kk Ultraviolet-curing undercoating composition and production of multilayer coated film by utilizing the same
JPS60162688A (en) † 1984-02-04 1985-08-24 Dainippon Printing Co Ltd Thermal transfer recording sheet and production thereof

Also Published As

Publication number Publication date
EP0213122B2 (en) 1992-06-17
ATE32850T1 (en) 1988-03-15
WO1985004842A1 (en) 1985-11-07
DE3561792D1 (en) 1988-04-14
EP0213122A1 (en) 1987-03-11

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