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:
May. 20, 2014
Filed:
Sep. 26, 2012
Vladimir P. Raksha, Santa Rosa, CA (US);
Jay M. Holman, Santa Rosa, CA (US);
Paul G. Coombs, Santa Rosa, CA (US);
Charles T. Markantes, Santa Rosa, CA (US);
Roger W. Phillips, Santa Rosa, CA (US);
Vladimir P. Raksha, Santa Rosa, CA (US);
Jay M. Holman, Santa Rosa, CA (US);
Paul G. Coombs, Santa Rosa, CA (US);
Charles T. Markantes, Santa Rosa, CA (US);
Roger W. Phillips, Santa Rosa, CA (US);
JDS Uniphase Corporation, Milpitas, CA (US);
Abstract
A printing apparatus includes a magnetic rotatable roller with a smooth even outer surface for aligning magnetic flakes in a carrier, such as an ink vehicle or a paint vehicle to create optically variable images in a high-speed, linear printing operation. Images can provide security features on high-value documents, such as bank notes. Magnetic flakes in the ink are aligned using magnetic portions of the roller, that can be formed by permanent magnets embedded in a non-magnetic roller body, or selectively magnetized portions of a flexible magnetic cover of the roller. In some embodiments, the roller is assembled for a plurality of interchangeable sections, which can include spinning magnets. Selected orientation of the magnetic pigment flakes can achieve a variety of illusive optical effects that are useful for decorative or security applications.