EP 1090774 B1 20030502 - Method and product for protecting the secrecy of messages written on a movable support article, in particular on a sheet of paper cardboard or plastic
Title (en)
Method and product for protecting the secrecy of messages written on a movable support article, in particular on a sheet of paper cardboard or plastic
Title (de)
Verfahren und Produkt zur Geheimhaltung von Berichten geschrieben auf einem beweglichen Träger, insbesondere ein Papier-, Karton- oder Kunstoffblatt
Title (fr)
Procédé et produit pour la conservation du secret de messages écrits sur un support déplaçable, en particulier une feuille de papier, carton ou plastique
Publication
Application
Priority
IT RE990093 A 19990923
Abstract (en)
[origin: EP1090774A2] The method comprises the following steps: applying to the support article (10) a lower film (21) of opaque ink adhering to the surface of the article (10) and of the type able to be scratched off in small disintegrated particles by a sharp-edged hard object; then writing the secret message (11) on said lower film (21), said writing being such as to be able to be seen on said film (21); then covering the written message (11) with a transparent laminar plastic support (32), which is applied adheringly to said lower film (21) in such a manner as to conceal the written message (11); then adheringly applying to the upper surface of said plastic support (32) an upper film (31) of opaque ink of the type able to be scratched off the plastic support (32) in small disintegrated particles by a sharp-edged hard object. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
B41M 3/005 (2013.01); B41M 3/14 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1090774 A2 20010411; EP 1090774 A3 20020403; EP 1090774 B1 20030502; AT E238911 T1 20030515; DE 60002409 D1 20030605; DE 60002409 T2 20031113; IT 1309772 B1 20020130; IT RE990093 A0 19990923; IT RE990093 A1 20010323
DOCDB simple family (application)
EP 00200113 A 20000113; AT 00200113 T 20000113; DE 60002409 T 20000113; IT RE990093 A 19990923