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1. (WO2007077455) IMPROVEMENTS IN AND RELATING TO SECURITY PRINTING

Pub. No.:    WO/2007/077455    International Application No.:    PCT/GB2007/000030
Publication Date: Fri Jul 13 01:59:59 CEST 2007 International Filing Date: Sat Jan 06 00:59:59 CET 2007
IPC: B41M 3/16
B41M 5/28
C08K 5/00
C09D 5/03
Applicants: INOVINK LIMITED
LEWIS, David, Malcolm
BROADBENT, Peter, Jeffrey
Inventors: LEWIS, David, Malcolm
BROADBENT, Peter, Jeffrey
Title: IMPROVEMENTS IN AND RELATING TO SECURITY PRINTING
Abstract:
A composition comprising a mixture of a thermographic compound and a compound capable of undergoing a change in at least one optical property upon application of a stimulus is described. Also described are a printed image precursor comprising a substrate on at least a portion of which is coated such a composition, a method of manufacturing a printed image precursor and a method of manufacturing a printed image.