The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2014
Filed:
Dec. 06, 2011
Paul Callant, Edegem, BE;
Ingrid Geuens, Emblem, BE;
Bart Waumans, Puurs, BE;
Hubertus Van Aert, Pulderbos, BE;
Paul Callant, Edegem, BE;
Ingrid Geuens, Emblem, BE;
Bart Waumans, Puurs, BE;
Hubertus Van Aert, Pulderbos, BE;
Agfa-Gevaert N.V., Mortsel, BE;
Abstract
A method of color laser marking an article having a polymeric foil with at least one colorless layer containing an infrared absorber, a polymeric binder and a color forming compound; including the steps of:—laser marking the colorless layer with an infrared laser using a first laser operation mode to generate a blue or cyan color; and—laser marking the same colorless layer with an infrared laser using a second laser operation mode to generate a black color, wherein the first laser operation mode applies less energy to the colorless layer than the second laser operation mode. Also disclosed is an article, such as a security document, including a polymeric foil and a colorless layer containing laser marked graphical data having a blue or cyan color and laser marked information having a black color.