Secure laser marking personalisation
AssigneeGemalto SA
InventorJean-Luc Lesur
Life of this patent
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Abstract
The present invention relates to a method (100) for personalizing a document, said document comprising a support comprising printed patterns (201, 202), wherein said method (100) comprises generating at least a laser pulse on said support for carbonizing at least a printed pattern.
Claims8
A method for personalizing a document, said document comprising a support comprising a plurality of micro-character patterns of ink, wherein said method comprises generating at least a laser pulse on said support for carbonizing at least one micro-character pattern of ink, whereby if an area of a micro-character pattern is touched by at least a laser dot, carbonization of the ink propagates in the full micro-character pattern area, that is made darker, and does not propagate to areas of the support that do not carry ink, such that the carbonization of several micro-characters among a plurality of micro-characters form a chain of darkened alphanumeric micro-characters forming a control code.
A document comprising a support comprising printed patterns, wherein at least one printed pattern is carbonized by generating at least a laser pulse on said support for carbonizing at least one micro-character pattern of ink, whereby if an area of a micro-character pattern is touched by at least a laser dot, carbonization of the ink propagates in the full micro-character pattern area, that is made darker, and does not propagate to areas of the support that do not carry ink, such that the carbonization of several micro-characters among a plurality of micro-characters form a chain of darkened alphanumeric micro-characters forming a control code.
Dependencies are inferred from the claim text.