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:
Sep. 18, 2007
Filed:
Jan. 23, 2004
Junichi Ide, Tokyo, JP;
Haruhiko Yamaguchi, Tokyo, JP;
Futoshi Kobayashi, Tokyo, JP;
Takeshi Umega, Tokyo, JP;
Tsuyoshi Itoh, Tokyo, JP;
Yoshimi Yodogawa, Tokyo, JP;
Mamoru Usami, Tokyo, JP;
Junichi Ide, Tokyo, JP;
Haruhiko Yamaguchi, Tokyo, JP;
Futoshi Kobayashi, Tokyo, JP;
Takeshi Umega, Tokyo, JP;
Tsuyoshi Itoh, Tokyo, JP;
Yoshimi Yodogawa, Tokyo, JP;
Mamoru Usami, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
There is provided an optical recording medium-manufacturing apparatus that is capable of avoiding breakage of a substrate while avoiding formation of a central hole off-center with respect to the substrate. A control section causes the vertical movement section to move an ultrasonic horn in directions toward and away from the cutting edge of a punching blade section to thereby cause the ultrasonic horn to press the disk-shaped substrate and at the same cause an ultrasonic generator to perform ultrasonic vibration at least from a time point at which the disk-shaped substrate is brought into contact with the cutting edge of the punching blade section to a time point at which the punching of the central hole is completed.