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:
Aug. 18, 2020
Filed:
Jun. 03, 2019
Entrust Datacard Corporation, Shakopee, MN (US);
John Knaack, Shakopee, MN (US);
Rajesh K. Juriasingani, Shakopee, MN (US);
Patrick C. Cronin, Shakopee, MN (US);
Entrust Datacard Corporation, Shakopee, MN (US);
Abstract
Techniques are described for obscuring residual images on print ribbons that have been used to print on plastic cards in order to prevent access to sensitive or personalized data appearing in the residual images. An image is printed on a retransfer film using the print ribbon, thereby creating a residual image of the printed image on the print ribbon. The retransfer film is then used to obscure some or all of the residual image on the print ribbon by transferring ink from the section of the print ribbon containing the residual image onto the retransfer film. In some embodiments, obscuring the residual image on the print ribbon occurs before the printed image on the retransfer film is transferred to the plastic card.