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. 30, 2014
Filed:
May. 10, 2012
Applicants:
Bart Waumans, Puurs, BE;
Paul Callant, Edegem, BE;
Inventors:
Bart Waumans, Puurs, BE;
Paul Callant, Edegem, BE;
Assignee:
Agfa-Gevaert N.V., Mortsel, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M 3/14 (2006.01); B41M 5/26 (2006.01); B41M 5/327 (2006.01); B41M 5/333 (2006.01); B41M 5/337 (2006.01); B42D 15/00 (2006.01); B42D 15/10 (2006.01); B41J 2/44 (2006.01); B42D 25/00 (2014.01); B41M 7/00 (2006.01); B41M 5/44 (2006.01); B41M 5/41 (2006.01);
U.S. Cl.
CPC ...
B41M 3/144 (2013.01); B41M 5/3372 (2013.01); B42D 15/10 (2013.01); B41M 2205/38 (2013.01); B41M 5/44 (2013.01); B41J 2/442 (2013.01); B41M 2205/04 (2013.01); B41M 5/3375 (2013.01); B41M 5/3336 (2013.01); B42D 15/0013 (2013.01); B41M 5/41 (2013.01); B41M 5/267 (2013.01); B41M 3/142 (2013.01); B41M 5/327 (2013.01); B41M 7/009 (2013.01); Y10S 430/146 (2013.01);
Abstract
A method for preparing a color laser marked article comprising the steps of: a) infrared laser marking a security element including a polymeric support and a color forming layer comprising a color forming compound, an infrared dye and a polymeric binder comprising vinyl acetate and at least 85 wt % of vinyl chloride based on the total weight of the binder; and b) exposing the laser marked security element with light having a wavelength higher than 440 nm. The light exposure of step b) hinders the falsification of an issued security document without significant increase of background density.