DE750474C - Procedure to protect securities or the like against forgery - Google Patents

Procedure to protect securities or the like against forgery

Info

Publication number
DE750474C
DE750474C DES152480D DES0152480D DE750474C DE 750474 C DE750474 C DE 750474C DE S152480 D DES152480 D DE S152480D DE S0152480 D DES0152480 D DE S0152480D DE 750474 C DE750474 C DE 750474C
Authority
DE
Germany
Prior art keywords
paper
procedure
against forgery
securities
solution
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
DES152480D
Other languages
German (de)
Inventor
Aime Azam
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.)
TECH D APPLIC CHIMIQUES ET PHY
Original Assignee
TECH D APPLIC CHIMIQUES ET PHY
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 TECH D APPLIC CHIMIQUES ET PHY filed Critical TECH D APPLIC CHIMIQUES ET PHY
Application granted granted Critical
Publication of DE750474C publication Critical patent/DE750474C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29Securities; Bank notes

Description

Verfahren zum Schutz von Wertpapieren o. dgl. gegen Fälschung Die vorliegende Erfindung betrifft ein Verfahren zum Schutz von Wertpapieren,- wie z. B. Schecks, Wechseln, Aktien, Obligationen, Gutscheinen, Lotterielosen u. dgl., und besteht im wesentlichen darin, daß man auf bestimmte Teile der Oberfläche dieser Papiere irgendwelche an sich übliche Zeichen mit Hilfe einer Komposition aufdruckt, die für das bloße Auge keine sichtbaren Spuren hinterläßf, aber wasserundurchlässig und demgemäß aufdeckbar bzw. nachweisbar ist.Method for protecting securities or the like against forgery The present invention relates to a method for protecting securities, - such. B. checks, bills of exchange, stocks, bonds, vouchers, lottery tickets and the like, and consists essentially in the fact that you look at certain parts of the surface of this Any kind of usual characters printed on paper with the help of a composition, which leaves no traces visible to the naked eye, but is impermeable to water and is accordingly detectable or detectable.

Gemäß der Erfindung wird der Aufdruck der Zeichen, die atfs irgendwelchen Linien. Mustern, Buchstaben, Zahlen oder Verbindungen dieser Elemente bestehen können, mit Hilfe einer Spezialtinte oder -tusche bewerkstelligt, die aus einer Lösung von chloriertem Kautschuk in Lösungsmitteln, wie z. B. Benzin o. dgl., besteht. Der Erfinder hat festgestellt, deß eine ,derartige Lösung ausreichende Viskosität besitzt, um damit Aufdrucke mit dem klassischen Verfahren des Lichtdruckes herzustellen. Die so erzielten Aufdrucke sind weiß und daher auf dem Papier unsichtbar. Andererseits haben sie aber die Eigenschaft, für Wasser undurchlässig zu sein. Wenn man daher das Papier, das einen solchen Schutzaufdruck erhalten hat, anfeuchtet, absorbieren die nichtbedruckten Teile das Wasser, während die mit dem chlorierten Kautschuk imprägnierten Stellen nicht feucht. werden und sich daher weiß von den feuchten Teilen abheben, die ihrerseits etwas grau sind.According to the invention, the printing of the characters, the atfs any Lines. Patterns, letters, numbers or combinations of these elements can exist, accomplished with the help of a special ink or ink made from a solution of chlorinated rubber in solvents such as B. gasoline o. The like., Is. Of the The inventor has found that such a solution has sufficient viscosity to in order to produce imprints with the classic process of collotype printing. The prints obtained in this way are white and therefore invisible on the paper. on the other hand but they have the property of being impermeable to water. If you therefore the paper that has received such a protective print, moisten, absorb the unprinted parts the water, while those with the chlorinated rubber impregnated areas not damp. become and therefore know of the damp Parts that are a bit gray in turn stand out.

Wenn das Lösungsmittel einmal verdampft ist, läßt sich auf der behandelten Oberfläche keine Spur feststellen, so daß man die beschriebene Probe wiederholen kann, sooft man will. Die Praxis hat andererseits gezeigt. daß die unsichtbaren Aufdrucke, die als Erkennungszeichen dienen, besser hervortreten, wenn man die Kontrollanfeuchtung mit Hilfe einer verdünnten alkoholischen Lösung vornimmt, «-elche die Fasern des Papiers besser anfeuchtet. Die Erfindung bietet somit ein neues und vervollkommnetes iHittel, um wertvolle Dokumente zu identifizieren. Sie zeichnet sich gegenüber den bekannten Verfahren einschlägiger Art durch den Vorteil aus, daß sie zur Erzielung der Probe lediglich Wasser oder gegebenenfalls eine verdünnte alkoholische Lösung erfordert; d. h. also Mittel, die denkbar einfach zu erhalten und zu handhaben sind.Once the solvent has evaporated, it can be used on the treated There was no trace of the surface, so the described sample was repeated can as often as you want. On the other hand, practice has shown. that the invisible Imprints, which serve as identification marks, stand out better when you have the control moistening with the help of a dilute alcoholic solution, «-elche the fibers of the Paper better moistened. The invention thus offers a new one and perfected i means to identify valuable documents. she draws have the advantage over the known processes of a relevant type, that they only use water or, if necessary, a diluted one in order to obtain the sample requires alcoholic solution; d. H. in other words, funds that are extremely easy to obtain and are to be handled.

Claims (1)

PATENTANSPRÜCHE: r. Verfahren zum Schutz von Wertpapieren o. dgl. gegen Fälschung, dadurch gekennzeichnet, daß man die Papiere mittels einer Lösung von chloriertem Kautschuk in einem flüchtigen organischen Lösunigsmittel, z. B. Benzin, mit Kennzeichen versieht, die auf dem Papier keine für das bloße Auge sichtbaren Spuren hinterlassen, aber für Wasser undurchlässig sind, so daß sie sich beim _\,nfeuchten des zweiten Papiers weiß von dem etwas grau erscheinenden Papier abheben. :2. Verfahren nach Anspruch r, dadurch gekennzeichnet, daß die Anfeuchtung des Papiers mittels einer verdünnten alkoholischen Lösung vorgenommen wird. Zur Abgrenzung des Anmeldungsgegenstandes vom Stand der Technik sind im Erteilungsverfahren keine Druckschriften in Betracht gezogen worden.PATENT CLAIMS: r. Procedure for the protection of securities or the like. against forgery, characterized in that the papers are made by means of a solution of chlorinated rubber in a volatile organic solvent, e.g. B. Gasoline with marks that are not visible to the naked eye on paper Leave traces, but are impermeable to water, so that they wet themselves when _ \, n of the second paper stand out white from the somewhat gray-appearing paper. : 2. procedure according to claim r, characterized in that the moistening of the paper by means of a dilute alcoholic solution is made. To delimit the subject of the registration No publications from the state of the art are considered in the granting procedure been drawn.
DES152480D 1940-04-13 1942-10-16 Procedure to protect securities or the like against forgery Expired DE750474C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR750474X 1940-04-13

Publications (1)

Publication Number Publication Date
DE750474C true DE750474C (en) 1945-01-17

Family

ID=9151262

Family Applications (1)

Application Number Title Priority Date Filing Date
DES152480D Expired DE750474C (en) 1940-04-13 1942-10-16 Procedure to protect securities or the like against forgery

Country Status (1)

Country Link
DE (1) DE750474C (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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