Patent ID: 7403651
Filing Date: 2008-07-22
Classification: B32B,B41M,B42D,G03H,Y10S,Y10T

Abstract:
1. A process for producing a multi-color image on or in a plastic body, wherein at least a part of the body comprises a coloring agent mixture which is composed of at least three different components, wherein each of the components is in the form of a pigment or other coloring agent and is bleachable by means of laser under laser conditions which are specific to the respective component, wherein with respect to each of the three components, under the laser conditions which are specific to a component, the other components are not or are substantially not bleachable and a component is a cyan coloring agent, and/or a component is a magenta coloring agent, and/or a component is a yellow coloring agent, wherein in a first step by laser irradiation of a location of the plastic body under laser conditions which are specific to one of the three components only the one component is bleached and that in a second step by laser irradiation of the same location of the body under laser conditions which are specific to a further one of the three components only that further component is bleached, wherein the color magenta is formed by the magenta coloring agent by bleaching of the yellow coloring agent in one step and the cyan coloring agent in another step; and/or the color cyan is formed by the cyan coloring agent by bleaching of the magenta coloring agent in one step and the yellow coloring agent in another step; and/or the color yellow is formed by the yellow coloring agent by bleaching of the magenta coloring agent in one step and the cyan coloring agent in another step.