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:
Feb. 11, 2003
Filed:
Feb. 23, 2000
Quirinus A. G. Van Vlimmeren, Veldhoven, NL;
Gustav B. G. Andersson, Sollentuna, SE;
OTB Group B.V., Eindhoven, NL;
Abstract
A method of producing a disc having at least one substrate and at least one information layer on the substrate, the method includes bringing the substrate in parallel relationship with a stamper having a negative of the information layer to be formed on the substrate. A gap is located between the substrate and the stamper. A lacquer is injected into the gap between the substrate and the stamper. At least the stamper is rotated, moving the substrate and the stamper towards each other, thereby reducing the gap. The layer of lacquer formed between the substrate and the stamper is cured, and the stamper is removed, leaving the layer of cured lacquer with the information layer formed therein on substrate. Before bringing the substrate in parallel relationship with the stamper, the substrate is provided with a first information layer and a semi-reflective layer located thereon, whereby the layer of lacquer is formed onto the semi-reflective layer.