Identification card and a method of producing same
AssigneeGAO Gesellschaft fuer Automation und Organisation mbH
InventorsHans J. Holbein, Thomas Maurer
Life of this patent
Estimating the term…
Abstract
An identification card having information applied in the form of patterns, letters, numbers and/or images, formed by interruptions in the homogeneity of different colored layer areas arranged superjacently on the identification card. The colored information can be produced by selectively removing the color layers by means of a controlled laser beam or by blurring or other chemical reactions induced by said beam. Thus identification cards can be produced having a high standard of security in spite of the simplicity of their production.
Claims12
A method of producing an identification card having visually detectable information, comprising:
- applying a plurality of color layers over each other on a synthetic carrier;
- and
- forming the information by contacting the coIor layers with a controlled laser beam and selecting the energy of the laser beam and the color layer characteristics in such a way that a new color is formed restricted to a certain area, said new color being formed by an interaction between the color layers produced by at least partially melting micro-capsules which have a reactant of colorant and are embedded in the superjacent color layers with the laser beam.
A method for producing identification cards having visually detectable information comprising;
- forming a card made up of at least two different color layers superimposed on a carrier layer;
- producing multi-colored visually detectable information on said card by the effect of a locally defined variable intensity laser beam, the intensity of said laser beam and the properties of the color layers being adjusted in such a way that by application of the laser beam to the color layers in a contact area, said color layers are removed layer by layer whereby the removal is defined by the intensity of said laser beam in a contact area so that separate color layers are selectively exposed.
An identification card comprising;
- a carrier layer;
- at least two superjacent color layers with selective absorbtion characteristics printed on said carrier layer wherein said layers further comprise means for providing visually detectable information on the card by locally removed material from the printed color layers, said information is generated by locally evaporated material of said color layers by a variable energy laser beam, the energy of said laser beam bing controlled for the selective removal of said color layers in accordance with the absorbtion characteristics of said color layers.
Dependencies are inferred from the claim text.