Anticopying printing-writing medium and associated method

Abstract

Abstract Translated from French Support d'impression-écriture destiné à rendre toute photocopie non conforme à l'original ou illisible comprenant un système photochromique formé d'au moins un photochrome et un photosensibilisant, destiné à perturber le contraste entre le fond du document et son graphisme lors de l'operation de photocopie. Le système photochromique est incorporé de façon individualisée par rapport au support. Print-writing medium intended to make any photocopy not in conformity with the original or illegible comprising a photochromic system formed by at least one photochromic and a photosensitizer, intended to disturb the contrast between the background of the document and its graphics during the 'photocopy operation. The photochromic system is incorporated individually with respect to the support.

Inventors

• 👤 René Gautron
• 👤 Pascale Escaffre

Bibliographic Details