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EP0428828A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for the detection of copies

Assignee: BAYROPA JUNG GmbH
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Filing: 1990-08-03
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Granted: —
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Expires: 2010-08-03
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Abstract

Abstract Translated from German Um Farbkopien von originalen Dokumenten, z.B. Farhrschei­nen, unterscheiden zu können, wird das Original mit einer fluoreszierenden und einer nichtfluoreszierenden Offset-­Farbe bedruckt, die etwa gleichen Farbton aufweisen, z.B. den Farbton Orange. Bei der Kopie wird die fluoreszierende Farbe im Farbton verfälscht wiedergegeben, z.B. bei Orange erscheint nunmehr Mittelbraun, so daß auf der Kopie die Farben Orange und Mittelbraun erscheinen. To make color copies of original documents, e.g. To be able to distinguish between tickets, the original is printed with a fluorescent and a non-fluorescent offset ink, which have approximately the same color, e.g. the shade orange. When copied, the fluorescent color is falsified, e.g. orange now appears medium brown, so that the colors orange and medium brown appear on the copy.

Inventors

  • 👤 Folker Jung

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 12:34
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/08; B; B41; B41M; B41M3/00; B41M3/14; B41M3/144; G03G; G03G21/00; G03G21/04; G03G21/043

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