EP1372978A1 - Feuille d'enregistrement thermosensible et son utilisation - Google Patents

Feuille d'enregistrement thermosensible et son utilisation

Info

Publication number
EP1372978A1
EP1372978A1 EP02703533A EP02703533A EP1372978A1 EP 1372978 A1 EP1372978 A1 EP 1372978A1 EP 02703533 A EP02703533 A EP 02703533A EP 02703533 A EP02703533 A EP 02703533A EP 1372978 A1 EP1372978 A1 EP 1372978A1
Authority
EP
European Patent Office
Prior art keywords
heat
sensitive recording
web
recording sheet
watermark
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.)
Granted
Application number
EP02703533A
Other languages
German (de)
English (en)
Other versions
EP1372978B1 (fr
Inventor
Wolfgang Wagner
Bernd Gerecht
Matthias Marx
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
Original Assignee
Mitsubishi HiTech Paper Flensburg 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 filed Critical Mitsubishi HiTech Paper Flensburg GmbH
Publication of EP1372978A1 publication Critical patent/EP1372978A1/fr
Application granted granted Critical
Publication of EP1372978B1 publication Critical patent/EP1372978B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41M5/40—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
    • 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
    • B41M5/41—Base layers supports or substrates
    • 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]

Definitions

  • the invention relates to a heat-sensitive recording sheet with a real or embossed watermark and a heat-sensitive recording layer containing color formers and color acceptors, and to its use as a ticket.
  • Heat-sensitive recording sheets with authenticity-proofing security features are particularly useful in the area of higher-quality applications, e.g. for tickets, etc. well known in the form of lottery tickets and tickets and also for office papers, for example.
  • authenticity-proofing security features are known, real or embossed watermarks are particularly popular on the market because, in addition to the authenticity-proofing, they also give the product into which they are incorporated a more valuable appearance.
  • Heat-sensitive recording materials with fake watermarks are therefore often unsuitable for fully satisfying the market requirements described above.
  • Such a heat-sensitive recording material is proposed, for example, in EP-A-0 844 097, according to which the recording material has, as a first security feature, a latent image printed on its back, produced by means of a security ink containing a fluorescent reagent.
  • the security ink contains a water-repellent.
  • Heat-sensitive recording materials of the type mentioned have been known for a long time.
  • DE-U-93 02 105 proposes a web-shaped carrier material for a thermosensitive recording layer with a surface of high smoothness or extremely low roughness, in which at least one real watermark is formed in the carrier material.
  • a security document to be used as a credit or check card, driver's license or also as a label in a wide variety of forms of use comprises a substrate with a pressure-sensitive image-forming coating material, which is possibly only partially applied and which is provided by a coated or laminated protective layer is covered.
  • the substrate may include a watermark and may be applied to another material to form a security card.
  • DE-C-37 69 999 discloses a method for producing two-ply security paper with embedded security features in the form of security threads, watermarks and the like, two layers being formed on a circular screen paper machine and the security thread being placed between them, optionally with additional holes being made or watermark, the paper being treated during the sheet formation or shortly thereafter by means of air or water jets in such a way that local fiber displacement up to the formation of holes or watermarks is achieved.
  • the combined layers of paper are then squashed and dried together. Since the document does not disclose any heat-sensitive recording layers, the problem of shadow images is not addressed.
  • the new heat-sensitive recording sheet is intended to overcome the disadvantages listed above.
  • the new heat-sensitive recording sheet should be able to have further authenticity-proofing security features, the selection of which should not have any restrictive limits, for example, by unwanted chemical reactions of the reagents that make up the authenticity-proofing security features with the color-forming components of the heat-sensitive recording layer.
  • the new heat-sensitive recording sheet must be excellent as a ticket. Associated with this is the task that the new recording sheet must be printable on the side opposite the side with the heat-sensitive recording layer by means of offset processes. In a preferred embodiment, the side with the heat-sensitive recording layer should be designed to be canceled.
  • a heat-sensitive recording sheet has good cancelability in the sense of this invention if a non-solvent-containing cancellation stamp ink consisting of coloring pigments cannot be completely wiped away dry or wet from the recording sheet immediately after being printed.
  • the recording sheet comprises at least a first and a second sheet material Laminate, wherein the first sheet material comprises or consists of at least one substrate which is formed from paper which has the watermark on the side facing away from the second sheet material, and wherein the second sheet material comprises at least one substrate and the recording layer which is formed on the side of the substrate of the second sheet material facing away from the first sheet material.
  • a real watermark by displacement (so-called light watermark) or by enrichment (so-called shadow watermark) of the fiber mass, for example using a.
  • Eisseurs in the wire section of a paper machine is a preferred embodiment in the new heat-sensitive recording sheet as well as the application of a semi-real, so-called Molette watermark, which is created by embossing the still wet paper in the press section of a paper machine. Since a real watermark is even more difficult to imitate than a Molette watermark, the recording sheet according to the invention in its embodiment with a real watermark offers itself when a particularly clear authentication proof is desired.
  • both real and Moletten watermarks are to be considered in the incident or grazing light as well as in the backlight. If there is a possibility of viewing in backlight, the real watermark is more appropriate than the Moletten watermark due to somewhat clearer structures, but it is necessary that the recording sheet according to the invention is transparent, which limits its mass per unit area to 350 g / m 2 and preferably to 280 g / m 2 is appropriate. Should the watermark primarily or exclusively in the Auft. Grazing light can be recognized, there is no restriction with regard to the mass per unit area of the recording sheet according to the invention. In this case, the Moletten watermark is particularly suitable, as is the real watermark, the latter, provided paper is used as the substrate for the first web-like material with an increased mass per unit area, preferably above 100 g / m 2 .
  • the substrate of the second sheet-like material can be formed, for example — without being limited to this — from a transparent film, in particular from a polyester-based film, or also from a multi-layer polyolefin film. There are no limits to the thickness of the film.
  • the substrate of the second sheet material is made of paper, in particular wood-free paper, with a pigment content of not more than 15% by weight and preferably with a pigment content in a range from 2 to 10% by weight ,
  • a pigment content of not more than 15% by weight and preferably with a pigment content in a range from 2 to 10% by weight
  • the formation of an area-related mass of the paper of the second sheet material in a range of 40 to 200 g / m 2 and particularly preferred between 50 and 100 g / m 2 .
  • wood-free paper is preferred.
  • the paper is designed as a commercially available, preferably sized and uncoated printing paper with a mass per unit area preferably in a range from 50 to 200 g / m 2 and, when viewing the watermark, preferably in transmitted light, in particular between 55 and 100 g / m 2 . If, on the other hand, the watermark is preferred to be viewed in incident or grazing light, the mass per unit area should be selected, in particular above 100 g / m 2 .
  • One or more coatings or preparations can be applied to it on the side facing away from the second web-shaped material.
  • the lamination of the first web-like material with the second web-like material and optionally with the further material webs is carried out using a water-based or solvent-based adhesive, which is applied punctiformly or preferably over the entire surface.
  • a water-based or solvent-based adhesive which is applied punctiformly or preferably over the entire surface.
  • the type of lamination and the adhesives used for this purpose which can also be designed to be pressure-sensitive, provided that they harmonize with the materials to be bonded.
  • a very particularly preferred embodiment provides for the adhesive to be provided with security features such as, for example, colored or fluorescent fibers, metal threads, magnetic or magnetizable constituents or pigments, and / or for the adhesive to be colored.
  • the thermal head which triggers the color-forming reaction of the color formers with the color acceptors in the heat-sensitive recording layer causes the wax-like constituents in the recording layer to melt.
  • an intermediate layer containing an oil-absorbing pigment or pigment mixture is formed between the substrate of the second sheet material and the heat-sensitive recording layer, the pigments of this intermediate layer causing the melt to be absorbed. It is particularly advantageous if the pigment of the intermediate layer of at least 80 cm3 / 100 g, and more preferably of 100 cm, having an oil absorption 3/100 g, determined according to the Japanese standard JIS K 5,101th Calcined kaolin has proven particularly useful due to its high absorption capacity in the cavities.
  • an intermediate layer formed in this way acts as a heat reflection layer, as a result of which the heat sensitivity of the recording material and thus the printing speed in the thermal printer can be increased. Furthermore, such an intermediate layer can make a positive contribution to the leveling of the substrate surface, thus reducing the amount of coating color which is necessarily to be applied for the heat-sensitive recording layer.
  • the formation of an intermediate layer with a mass per unit area in a range from 5 to 20 g / m 2 and even better between 7 and 10 g / m 2 has a particularly advantageous effect.
  • the new heat-sensitive recording sheet has a protective layer covering the recording layer of the second web material.
  • Protective layers such as those used in the sense of the invention, increase the resistance of the heat-sensitive recording layer to environmental influences such as water, plasticizers, which are used, for example, in insert cases offered for holding tickets, oils and fats.
  • the protective layer covering the recording layer is distinguished by good printability.
  • a coating color such as is proposed in EP-B-0 909 242, is suitable for forming such a protective layer.
  • the protective layer combines high environmental resistance with devaluability and with excellent printability in the wet offset process.
  • the protective layer is relatively inexpensive to manufacture and apply in one layer.
  • the recording layer of the new heat-sensitive recording sheet is coated with a protective layer in which
  • the pigment of the protective layer consists of one or more inorganic pigments and at least 80% by weight is formed from a highly purified alkaline bentonite,
  • the binder of the protective layer consists of one or more water-insoluble, self-crosslinking acrylic polymers,
  • the binder / pigment ratio in the protective layer is in a range between 7: 1 and 10: 1 and
  • the crosslinking agent / binder ratio in the protective layer is greater than 1: 5 and preferably between 1: 5 and 1: 7.
  • Cyclic urea in particular, are suitable as crosslinking agents for the protective layer,
  • Methylol urea polyamide epichlorohydrin resin, ammonium zirconium carbonate.
  • the protective layer with a mass per unit area in a range from 1.5 to 6 g / m 2 and in particular between 1.8 and 4 g / m 2 .
  • At least one further material web can be formed between the first and second web-shaped material, which in a preferred embodiment is a film, in particular a polyester or polyolefin film.
  • a colored paper web is formed between the first and second web-shaped material as a further material web.
  • the recording sheet according to the invention is to be provided with a wide variety of security features as required, which are to be used in addition to the real or embossed watermark for the purpose of unambiguous proof of authenticity.
  • security features There are practically no limits for the selection of security features to be formed in / on the first web-shaped material, since they are compatible with the color-forming components of the recording layer need not be taken into account. Without being limited to this, the following security features are particularly useful:
  • a water-insoluble dye which is invisible to the naked eye and is incorporated into the substrate in particular an azine or anthraquinone dye, which, when the surface, which is opposite the side with the second web-like material, is wetted with an organic solvent or an acid, produces a striking coloration.
  • a dye which is only slightly visible in daylight in the acidic or neutral pH range for example based on pyrene sulfonate, which is applied in a regular or irregular pattern to the entire surface of the side which is opposite the side with the second web-shaped material and which is in contact undergoes a color reaction with an alkaline substance, which leads to a stable color that fluoresces in daylight.
  • a colored and / or lightened cellulose which is introduced into the substrate and which is fluorescent under UV radiation.
  • a transponder between the first and second sheet-like material.
  • a transponder is to be understood as a chip used as a security feature with circumferential copper wire as an antenna, which allows automatic and contactless identification of the product carrying it.
  • the heat-sensitive recording sheet according to the invention is mainly designed for use as a ticket and here in particular as a ticket.
  • the watermark may, in conjunction with the other security features, allow clear authentication of the recording sheet according to the invention. If necessary, the further security features used also allow the detection of attempted forgeries on typefaces produced on the recording sheet according to the invention. By preventing shadow images of the watermark in the recording layer, undisturbed image reproduction is possible, which is of the utmost importance, especially when displaying barcodes.
  • ticket used in the examples is to be understood as an admission ticket and in particular as a ticket or ticket for a wide variety of means of public transport.
  • a web of wood-free paper with a mass per unit area of 90 g / m 2 is produced on a paper machine as the first web-like material.
  • the paper web has watermarks generated by means of a treadmill.
  • a heat-sensitive recording paper with a mass per unit area of 82 g / m 2 (TQ 8067 from Mitsubishi HiTec Paper Flensburg GmbH) is produced as the second web-shaped material.
  • This heat-sensitive recording paper has an intermediate layer containing a pigment mixture and a protective layer covering the recording layer.
  • the two paper webs are laminated using a colorless adhesive to produce a recording sheet according to the invention.
  • the side of the heat-sensitive recording paper which is to be laminated together with the first paper web is opposite the side of the heat-sensitive recording paper to which the recording layer is applied.
  • the side of the first paper web that is to be laminated together with the heat-sensitive recording paper is opposite the side of the first paper web that bears the watermark.
  • the protective layer of the heat-sensitive recording paper has a high absorption capacity for stamping ink and ink, the recording sheet produced is particularly suitable for the production of tickets that can be invalidated by these liquids.
  • a recording sheet intended for use as a ticket is produced in accordance with Example 1, with the difference that instead of the heat-sensitive recording paper used in Example 1, a heat-sensitive recording paper without protective layer of the type T 7033 from Mitsubishi HiTec Paper Flensburg GmbH with a weight per unit area of 72 g / m 2 is used.
  • Example 3 a heat-sensitive recording paper without protective layer of the type T 7033 from Mitsubishi HiTec Paper Flensburg GmbH with a weight per unit area of 72 g / m 2 is used.
  • Example 1 a recording sheet intended for use as a ticket is produced.
  • a heat-sensitive recording paper with a weight per unit area of 82 g / m 2 (TG 8065 from Mitsubishi HiTec Paper Flensburg GmbH) is used.
  • the protective layer of this heat-sensitive recording paper is designed in accordance with the variant given in the present description for the protective layer disclosed in EP-B-0 909 242.
  • recording sheets intended for use as a ticket are produced, but in each case a colored paper web having a mass per unit area of 40 g / m 2 is additionally inserted between the paper web having the watermark and the web of the heat-sensitive recording paper.
  • recording sheets intended for use as a ticket are produced, however, using a colored adhesive, a colored adhesive layer is formed between the watermarked paper web and the web of the heat-sensitive recording paper.
  • Recording sheets are produced in accordance with Examples 1-3, but colored fibers are embedded in the layer formed from the adhesive as a further security feature.
  • Recording sheets are produced in accordance with Examples 1-3, but metal threads are embedded in the layer formed from the adhesive as a further security feature.
  • recording sheets intended for use as tickets are produced, but in each case a tear-resistant film made of polyester terephthalate with a mass per unit area of 15 g / m 2 is additionally inserted between the paper web having the watermark and the web of the heat-sensitive recording paper.
  • Example 1 a recording sheet intended for use as a ticket is produced.
  • a heat-sensitive recording paper with a mass per unit area of 50 g / m 2 (PG 5065 from Mitsubishi HiTec Paper Flensburg GmbH) is used.
  • This heat-sensitive recording paper has an intermediate layer containing a pigment mixture and a modified protective layer covering the recording layer.
  • the protective layer of this heat-sensitive recording paper is designed in accordance with the variant given in the present description for the protective layer disclosed in EP-B-0 909 242.
  • Example 1 a recording sheet intended for use as a ticket is produced.
  • a heat-sensitive recording paper with a weight per unit area of 120 g / m 2 (TG 1265 from Mitsubishi HiTec Paper Flensburg GmbH) is used.
  • This heat-sensitive recording paper has an intermediate layer containing a pigment mixture and a modified protective layer covering the recording layer.
  • the protective layer of this heat-sensitive recording paper is designed in accordance with the variant given in the previous description for the protective layer disclosed in EP-B-0 909 242.
  • Figure 1 shows the schematic structure of a first variant of the heat-sensitive recording sheet (8) according to the invention in cross section.
  • the substrate (1) of the first web-like material has a Moletten watermark (2) on the side facing away from the second web-like material consisting of substrate (3) and recording layer (4).
  • the substrate (1) of the first web-like material is compacted in the area below the embossed Moletten watermark (2).
  • Figure 2 shows the schematic structure of a second variant of the heat-sensitive recording sheet (8 ') according to the invention in cross section.
  • the first web-like material consists of substrate (1) with a real watermark (2 ').
  • the second web-shaped material consists of substrate (3), intermediate layer (5), recording layer (4) and protective layer (6) in this order, as seen from the first web-shaped material.
  • a further material web (7) is additionally shown between the substrate (1) of the first web-like material and the substrate (3) of the second web-like material.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Credit Cards Or The Like (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Paper (AREA)

Abstract

L'invention concerne une feuille d'enregistrement thermosensible (8), sous forme de stratifié, caractérisée en ce qu'elle comprend au moins un premier et un second matériaux en forme de bande continue, en ce que le premier matériau en bande comprend au moins un substrat (1) en papier avec un filigrane (2), et le second matériau en bande comprend au moins un substrat (3) et une couche d'enregistrement thermosensible (4).
EP02703533A 2001-03-16 2002-01-04 Feuille d'enregistrement thermosensible et son utilisation Expired - Lifetime EP1372978B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10113286A DE10113286A1 (de) 2001-03-16 2001-03-16 Wärmeempfindlicher Aufzeichnungsbogen und seine Verwendung
DE10113286 2001-03-16
PCT/EP2002/000023 WO2002074550A1 (fr) 2001-03-16 2002-01-04 Feuille d'enregistrement thermosensible et son utilisation

Publications (2)

Publication Number Publication Date
EP1372978A1 true EP1372978A1 (fr) 2004-01-02
EP1372978B1 EP1372978B1 (fr) 2004-11-03

Family

ID=7678083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02703533A Expired - Lifetime EP1372978B1 (fr) 2001-03-16 2002-01-04 Feuille d'enregistrement thermosensible et son utilisation

Country Status (7)

Country Link
US (1) US7049267B2 (fr)
EP (1) EP1372978B1 (fr)
JP (1) JP3899033B2 (fr)
AT (1) ATE281311T1 (fr)
DE (2) DE10113286A1 (fr)
ES (1) ES2230469T3 (fr)
WO (1) WO2002074550A1 (fr)

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GB0212358D0 (en) * 2002-05-29 2002-07-10 Arjo Wiggins Ltd Multi-layer sheet product
US7207490B2 (en) * 2003-03-24 2007-04-24 Giesecke & Devrient Gmbh Security element
GB0423107D0 (en) * 2004-10-18 2004-11-17 Arjo Wiggins Ltd Sheet product for thermal printing
DE102005025095A1 (de) * 2005-06-01 2006-12-07 Giesecke & Devrient Gmbh Datenträger und Verfahren zu seiner Herstellung
FR2897078B1 (fr) * 2006-02-09 2011-08-19 Arjowiggins Materiau en feuille comportant au moins un filigrane avec une nuance coloree.
US8183175B2 (en) * 2006-09-19 2012-05-22 Mitsubishi Paper Mills Limited Thermal recording material
US20080166262A1 (en) * 2007-01-04 2008-07-10 Deka Ganesh C Medical packaging substrate with security feature
JP7015653B2 (ja) * 2017-08-10 2022-02-03 浜松ホトニクス株式会社 光モジュール、及び、光モジュールの製造方法
CN111455722A (zh) * 2020-04-08 2020-07-28 上海加颂纸业有限公司 水印纸在制备热敏纸中的用途、水印热敏纸及其制备方法

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DE3601114A1 (de) 1986-01-16 1987-07-23 Gao Ges Automation Org Verfahren zur herstellung von sichrheitspapier mit eingelagertem sicherheitsfaden
DE69204851T2 (de) * 1991-10-30 1996-05-02 Markpoint Printer Ab Sicherheitskarte.
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Also Published As

Publication number Publication date
DE10113286A1 (de) 2002-10-02
ES2230469T3 (es) 2005-05-01
JP2004526597A (ja) 2004-09-02
JP3899033B2 (ja) 2007-03-28
ATE281311T1 (de) 2004-11-15
DE50201465D1 (de) 2004-12-09
US20040092397A1 (en) 2004-05-13
EP1372978B1 (fr) 2004-11-03
WO2002074550A1 (fr) 2002-09-26
US7049267B2 (en) 2006-05-23

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