Security document having visually concealed security indicia

Details Security document having visually concealed security indicia Security document having visually concealed security indicia

B - Operations, Transporting

42

D

B42D 15/00 (2006.01) B44F 1/12 (2006.01)

Patent

CA 2318071

Security document (1) with security indicia (21) for preventing unauthorised reproduction, the security indicia being detectable in transmitted light, wherein the security indicia are located within the bounds of a security pattern (20) acting to visually conceal the security pattem in reflected light. The security pattern may be formed of one or more elements (25) and may have a complexity selected to enable the concealment of the security indicia (21).

L'invention porte sur un document (1) de sécurité pourvu d'un code (21) de sécurité empêchant la reproduction illicite, code de sécurité détectable par transmission de lumière. Les codes de sécurité sont placés dans les limites d'une configuration de sécurité (20) qui est masquée en lumière réfléchie. La configuration de sécurité peut être constituée d'un ou plusieurs éléments (25) et peut présenter une complexité facilitant le masquage du code de sécurité (21).

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