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. 25, 2008
Filed:
Jul. 02, 2003
Junichi Ide, Tokyo, JP;
Mamoru Usami, Tokyo, JP;
Tomoki Ushida, Tokyo, JP;
Kenji Yamaga, Tokyo, JP;
Atsushi Koyama, Tokyo, JP;
Junichi Ide, Tokyo, JP;
Mamoru Usami, Tokyo, JP;
Tomoki Ushida, Tokyo, JP;
Kenji Yamaga, Tokyo, JP;
Atsushi Koyama, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
An intermediate for an optical recording medium, according to the present invention, is an intermediate produced beforehand for manufacturing an optical recording medium that has a central mounting hole formed in a central portion thereof and one or more kinds of functional layers formed on a surface thereof, for enabling at least one of information recording and information reproduction. The intermediate has a provisional central hole, which is smaller in diameter than the central mounting hole, formed in a central portion thereof. This makes it possible to drop resin in the vicinity of the center of the intermediate without using a disk-shaped member, in performing spin coating on the intermediate, whereby it is possible to make the layer of applied resin substantially uniform in thickness.