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. 20, 1998
Filed:
Mar. 08, 1996
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A mastering machine comprises a turntable being capable of holding a master disk, a detector disposed in noncontact with the turntable for detecting repetitive runout amount of the turntable in the radial direction thereof, a non-repetitive runout amount calculator for calculating a non-repetitive runout amount in the radial direction of the turntable on the output of the detector, a projector for projecting an exposure beam to the master disk held by the turntable and a compensation unit for adjusting the position of the exposure beam projected to the master disk on the basis of a signal from the non-repetitive runout amount calculator.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile