Title:
【発明の名称】着色マークの製造法
Document Type and Number:
Japanese Patent JPH11504879
Kind Code:
A
Abstract:
The invention relates to a method for the manufacture of an object with a coloured mark, by irradiating the surface of the object with laser light in the shape of the mark, with the object, in at least the area where the mark is applied, consisting of a plastic composition which contains at least three colour-forming components that lose their colour-forming capacity under the influence of laser light, which are chosen so and are present in such a concentration that at every wavelength between 400 and 700 nanometres at least a portion of the amount of incident light is absorbed, one or more colours being chosen for the mark, the wavelength of the laser light subsequently being set to a value that is dependent on the chosen colour and the surface of the object subsequently being irradiated with the laser light.
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Inventors:
Argard, Olaf, Marx
Van den Elshout, Wilhelms, Henrykas, Hubertus, Antonius
Van den Elshout, Wilhelms, Henrykas, Hubertus, Antonius
Application Number:
JP53396496A
Publication Date:
May 11, 1999
Filing Date:
May 08, 1996
Export Citation:
Assignee:
DSM N.V.
International Classes:
B41M5/26; (IPC1-7): B41M5/26
Attorney, Agent or Firm:
Mitsuo Matsui