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1. (WO2010119089) HEAT-SENSITIVE RECORDING MATERIAL HAVING A SECURITY FEATURE

Pub. No.:    WO/2010/119089    International Application No.:    PCT/EP2010/054938
Publication Date: Fri Oct 22 01:59:59 CEST 2010 International Filing Date: Fri Apr 16 01:59:59 CEST 2010
IPC: D21H 21/40
D21H 21/42
D21H 21/44
B41M 5/26
B41M 5/28
B41M 5/30
Applicants: SENSION BIOLOGISCHE DETEKTIONS- UND SCHNELLTESTSYSTEME GMBH
SCHNEIDER, Peter
MEYR, Marcus
Inventors: SCHNEIDER, Peter
MEYR, Marcus
Title: HEAT-SENSITIVE RECORDING MATERIAL HAVING A SECURITY FEATURE
Abstract:
The invention relates to a heat-sensitive recording material, comprising a substrate paper having a heat-sensitive recording layer arranged on one side. A particulate, water-insoluble azo dye and/or planchettes in which a particulate, water-insoluble azo dye is dispersed are embedded in the substrate paper. Alternatively or additionally, a particulate, water-insoluble azo dye is dispersed in the heat-sensitive recording layer. If the paper product is treated with organic solvents in the course of a manipulation attempt, the dye particles are dissolved. The recording material is intensely discolored, and the manipulation attempt is irreversibly indicated.