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:
Nov. 23, 2004
Filed:
Jul. 16, 2001
Donald J. Kerfeld, St. Paul, MN (US);
Barry E. Brovold, St. Paul, MN (US);
Imation Corp., Oakdale, MN (US);
Abstract
The invention is directed towards techniques for creating optical data storage disks. In one embodiment, the invention provides a simultaneous two-sided rolling bead process. For example, a method may include positioning a first bead of photopolymer for distribution between a bottom stamper and a substrate, and positioning a second bead of photopolymer for distribution between a top stamper and the substrate. The method may also include passing a roller over the top stamper to distribute the beads of photopolymer, curing the photopolymer, and removing the substrate from the stampers. The simultaneous two-sided rolling bead process can be repeated on the same medium to create a two-sided dual-layer data storage medium or a two-sided multi-layer data storage medium.