| 摘要 |
The invention relates to a method for manufacturing a multilayer data medium (1), in which method: a multilayer data medium, including at least one transparent security layer (16), and at least one marking layer (17), sensitive to electromagnetic-marking radiation (5), are selected; said transparent security layer (16) includes at least one semi-transparent printed image including at least one thermochromic dye; at least one marking (30) is made using said electromagnetic-marking radiation, through said printed image; said semi-transparent printed image reveals, in a first state referred to as the inactivated state, at least one semi-transparent visible pattern that makes it possible, after said marking step, to view said marking (30) through said image, said pattern not being visible in a second state, referred to as the activated state. The invention also relates to a multilayer data medium (1). |
