| 摘要 |
A description is given of a method for applying colored information to an object ( 4 ), the object having at least two different chromophoric particles, at least in a layer ( 4 A) close to the surface, which change the color of this layer ( 4 A) under the influence of laser radiation, laser radiation ( 1, 2, 3 ) having at least two different wavelengths (lambda<SUB>1</SUB>, mu<SUB>2</SUB>, lambda<SUB>3</SUB>) being used in order to change the color of this layer ( 4 A), the object ( 4 ) being acted on by laser radiation in the vector and/or raster method by means of a two-coordinate beam deflection device ( 6 ) and a focusing device ( 7 ) for focusing the laser radiation onto the layer ( 4 A) of the object ( 4 ). According to the invention, at least one beam guiding means ( 8 ) is provided in order to guide a first laser beam ( 1 ) having the wavelength (lambda<SUB>1</SUB>) and at least one further laser beam ( 2 ) having a wavelength (lambda<SUB>2</SUB>), which is different from the wavelength of the first laser beam, via the two-coordinate beam deflection device ( 6 ) and the focusing device ( 7 ) onto the layer ( 4 A) of the object ( 4 ).
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