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:
Oct. 04, 2011
Filed:
Jun. 06, 2008
Tsukasa Murota, Shizuoka, JP;
Tsukasa Murota, Shizuoka, JP;
Sony Disc & Digital Solutions, Inc., Tokyo, JP;
Abstract
A vacuum transfer apparatus including an auxiliary vacuum chamber and a main vacuum chamber is used for transferring an uneven pattern to a disk substrate with a stamper. The auxiliary vacuum chamber is vacuumized or opened to air because the disk substrate is conveyed to and from the vacuum transfer apparatus through the auxiliary vacuum chamber. The disk substrate conveyed to the auxiliary vacuum chamber and then to the main vacuum chamber after the auxiliary vacuum chamber is vacuumized. In the main vacuum chamber, transferring of the uneven pattern with the stamper, curing of UV-curable resin, and removal of the stamper are performed to provide a disk substrate with the uneven pattern. Then, the disk substrate is conveyed from the vacuum transfer apparatus through the auxiliary vacuum chamber. An operation at the auxiliary-vacuum-chamber side and an operation at the main-vacuum-chamber side are performed in parallel.