Patent EP0176403A1 successfully refreshed from Google Patents.
← Back to Patent Explorer
EP0176403A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Fraud-preventing method for security papers

Assignee: SOTIMAG
•
Filing: 1985-08-27
•
Granted: —
•
Expires: 2005-08-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Translated from French La présente invention concerne un procédé antifraude pour document de valeur constitué par substrat P.V.C. comportant un emplacement de signature sur ce substrat, et consistant à déposer une couche d'encre de support 2, incluant un pigment et chargée d'un produit lui assurant une certaine porosité, sur l'emplacement de signature; déposer sur certaines zones de la première couche d'encre 2 un vernis 3 transparent et poreux incluant en dissolution de la poudre permettant d'obtenir aux ultraviolets une fluorescence de la couleur souhaitée; imprimer par sérigraphie au moyen d'une deuxième encre 4 vinylique pigmentée un filigrane sur des zones constituées soit par la première couche d'encre 2 soit par la couche de vernis 3. Apposer la signature du titulaire du document à l'aide d'un stylo feutre à encre indélébile à un produit tel que celui commercialisé sous la marque CORRECTOR. Ce procédé permet de rendre décelable toute tentative réussie de fraude tout en augmentant la difficulté de reproduction des documents. The present invention relates to an anti-fraud process for a document of value constituted by a PVC substrate comprising a signature location on this substrate, and consisting in depositing a layer of support ink 2, including a pigment and charged with a product ensuring it a certain porosity, on the signature site; depositing on certain areas of the first ink layer 2 a transparent and porous varnish 3 including, in dissolution of the powder, making it possible to obtain ultraviolet fluorescence of the desired color; print by screen printing with a second pigmented vinyl ink 4 a watermark on areas formed either by the first layer of ink 2 or by the layer of varnish 3. Affix the signature of the document holder using a felt-tip pen with indelible ink to a product such as the one marketed under the brand CORRECTOR. This process makes it possible to detect any successful attempt at fraud while increasing the difficulty of reproducing documents.

Inventors

  • 👤 Georges Peronneau
  • 👤 Bernard Chalus

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 07:11
CPC Classifications
B; B42; B42D; B42D25/00; B42D25/40; B42D25/405; B41; B41M; B41M3/00; B41M3/14; B41M3/144; B42D25/30; B42D25/318; B42D25/36; B42D25/378; B42D25/387; B42D2033/04; B42D2033/20; B42D2033/30; B42D2035/26; Y; Y10; Y10S; Y10S283/00; Y10S283/904; Y10S428/00; Y10S428/914; Y10S428/915; Y10S428/916; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24876; Y10T428/24893; Y10T428/24901; Y10T428/24942

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

BE505054A Cited
US3034430A Cited
US3400003A Cited
US3545380A Cited
FR1522465A Cited
FR2304479A1 Cited
DE2801015A1 Cited
EP0041024A1 Cited
EP0086282A1 Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag