DE397363C - Process for the production of forgery-proof security paper - Google Patents

Process for the production of forgery-proof security paper

Info

Publication number
DE397363C
DE397363C DEG58800D DEG0058800D DE397363C DE 397363 C DE397363 C DE 397363C DE G58800 D DEG58800 D DE G58800D DE G0058800 D DEG0058800 D DE G0058800D DE 397363 C DE397363 C DE 397363C
Authority
DE
Germany
Prior art keywords
paper
dyes
production
forgery
proof security
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEG58800D
Other languages
German (de)
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.)
MARTIN WADEWITZ DR
Original Assignee
MARTIN WADEWITZ DR
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 MARTIN WADEWITZ DR filed Critical MARTIN WADEWITZ DR
Priority to DEG58800D priority Critical patent/DE397363C/en
Application granted granted Critical
Publication of DE397363C publication Critical patent/DE397363C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • D21H21/46—Elements suited for chemical verification or impeding chemical tampering, e.g. by use of eradicators

Landscapes

  • Paper (AREA)

Description

Verfahren zur Herstellung von fälschungssicherem Wertzeichenpapier. Die Erfindung bezweckt die Herstellung eines fälschungssicheren Wertzeichenpapiers, das auch von jedem Laien mit Hilfe von leicht zu handhabenden Reagenzien sicher als echt erkannt werden kann. Durch Verwendung eines solchen Papiers zur Herstellung von Wertscheinen wird es dem Fälscher unmöglich gemacht, Scheine zu fälschen, denn es ist jedermann die Möglichkeit gegeben, die Echtheit des Papiers selbst nachzuprüfen.Process for the production of forgery-proof security paper. The invention aims to produce a forgery-proof security paper, this is also safe for every layperson with the help of easy-to-use reagents can be recognized as real. By using such a paper for making Notes of value make it impossible for the forger to forge notes, because everyone has the opportunity to check the authenticity of the paper for themselves.

Das neue Verfahren zur Sicherung des Papieres beruht auf der Eigentümlichkeit vieler Farbstoffe, z. B. vieler Schwefelfarbstoffe, Küpenfarbstoffe und anderer, durch Behandlung mit Alkalien oder mit Reduktionsmitteln oder mit beiden einen typischen Farbumschlag zu geben, welcher durch die Einwirkung der Luft wieder verschwindet, so daß der ursprüngliche Farbstoff regeneriert wird. Das mit den erwähnten Farbstoffen hergestellte weiße oder farbige Papier weist keine derartige Veränderung auf, daß es von gewöhnlichem Papier praktisch unterscheidbar wäre, es zeigt jedoch unter Zuhilfenahme des bezeichneten Reagens durch Farbumschlag seine Echtheit.The new method for securing the paper is based on the peculiarity many dyes, e.g. B. many sulfur dyes, vat dyes and others, by treatment with alkalis or with reducing agents or with both a typical one To give a color change, which disappears again through the action of the air, so that the original dye is regenerated. The one with the dyes mentioned produced white or colored paper has no such change that it would be practically distinguishable from ordinary paper, but it shows under With the aid of the designated reagent, its authenticity is determined by a color change.

Es ist aber auch ohne weiteres möglich, unter Benutzung der bezeichneten Farbstoffe das Papier nicht nur zu schützen, sondern ebenfalls zu färben, oder auch in Anwendung der im Papierfärbungsprozeß bekannten Vorrichtungen, z. B. Farbstoffverteiler usw., das Papier beliebig durch die bezeichneten Sicherungsfarbstoffe zu mustern. Je nach Wahl der einzelnen Phase des Papierherstellungsganges, in welcher diese Farbstoffe beigegeben werden, und je nach der Wahl oder der Vorbehandlung eines oder verschiedener bezeichneter Farbstoffe ergeben sich Kombinationen, welche dem Wertzeichen eine effektive Unverfälschbarkeit sichern.But it is also easily possible using the designated Dyes not only protect the paper, but also color it, or also using the devices known in the paper dyeing process, e.g. B. Dye dispenser etc. to pattern the paper in any way using the designated security dyes. Depending on the choice of the individual phase of the paper production process in which this Dyes are added, and depending on the choice or pretreatment one or different designated dyes combinations result which the Stamps ensure that they cannot be falsified.

Zur Erzielung des Farbumschlages betupft man eine Stelle des Papiers bzw. des Musters mit dem für den Farbstoff in Betracht kommenden Reagens und erhält an der befeuchteten Stelle den charakteristischen Farbumschlag. Nach dem Abtupfen der Feuchtigkeit verschwindet dieser und das Papier erhält dasselbe. Aussehen wie zuvor. Man kann erneut dieselbe Stelle einer Prüfung unterziehen. Wesentlich für dieses Prüfungsverfahren ist noch, daß das Papier nicht zerstört wird. Beispiel.: Während des Herstellungsganges des Papiers wird Anthraflavon G beigefügt und das Papier wie üblich fertiggestellt. Soll das fertige Papier geprüft werden, so geschieht dies durch Befeuchten mit alkalischer Hydrosulfitlösung. Die befeuchtete Stelle zeigt eine rotbraune Färbung, die nach dem Abtupfen des Reagens verschwindet.To achieve the color change, you dab a spot on the paper or the pattern with the reagent in question for the dye and is obtained the characteristic color change at the moistened point. After dabbing the moisture disappears and the paper gets the same. Look like before. You can test the same place again. Essential for this checking procedure is still that the paper is not destroyed. Example.: During the production process of the paper, Anthraflavon G is added and that Paper finished as usual. If the finished paper is to be checked, this is what happens this by moistening with alkaline hydrosulphite solution. The moistened place shows a red-brown color which disappears after swabbing the reagent.

Claims (1)

PATENTANSPRUCH: Verfahrt n zur Herstellung von fälschungssicherem Wertzeichenpapier für Papiergeld, Aktien u. dgl., dadurch gekennzeichnet, daß man während des Herstellungsgangcs des Papiers dem Papierstoff solche Farbstoffe, z., B. Schwefelfarbstoffe, Küpenfarbstoffe usw., beifügt, welche durch Behandlung mit Alkalien oder mit Rediiktionsmitteln oder mit beiden einen charakteristischon Farbumschlag geben,welcher durch die Einwirkung der Luft wit der verschwindet, so daB der ursprüngliche Farbstoff regeneriert wird.PATENT CLAIM: Verfahrt n for the production of forgery-proof Security paper for paper money, stocks and the like, characterized in that that such dyes are added to the paper stock during the production process, z. B. sulfur dyes, vat dyes, etc., added, which by treatment with alkalis or with reducing agents or with both one characteristic Give a color change, which disappears through the action of the air, so that the original dye is regenerated.
DEG58800D 1923-03-30 1923-03-30 Process for the production of forgery-proof security paper Expired DE397363C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG58800D DE397363C (en) 1923-03-30 1923-03-30 Process for the production of forgery-proof security paper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG58800D DE397363C (en) 1923-03-30 1923-03-30 Process for the production of forgery-proof security paper

Publications (1)

Publication Number Publication Date
DE397363C true DE397363C (en) 1924-06-20

Family

ID=7131988

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG58800D Expired DE397363C (en) 1923-03-30 1923-03-30 Process for the production of forgery-proof security paper

Country Status (1)

Country Link
DE (1) DE397363C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539533A1 (en) * 1983-01-17 1984-07-20 Aussedat Rey Method and developer for identifying security paper, copier paper or thermoreactive paper, as well as manual instrument for their implementation
FR2679934A1 (en) * 1991-07-29 1993-02-05 Arjo Wiggins Sa Security paper which can be authenticated reversibly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2539533A1 (en) * 1983-01-17 1984-07-20 Aussedat Rey Method and developer for identifying security paper, copier paper or thermoreactive paper, as well as manual instrument for their implementation
FR2679934A1 (en) * 1991-07-29 1993-02-05 Arjo Wiggins Sa Security paper which can be authenticated reversibly
EP0530059A1 (en) * 1991-07-29 1993-03-03 Arjo Wiggins S.A. System for the reversibel authentification of a security paper

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