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:
Apr. 15, 2008
Filed:
Jan. 24, 2005
Hirohisa Koga, Kanagawa Prefecture, JP;
Takashi Abe, Miyagi Prefecture, JP;
Yoshihiko Ito, Miyagi Prefecture, JP;
James S. Anderson, Hugo, MN (US);
Denis Langlois, River Falls, WI (US);
Hirohisa Koga, Kanagawa Prefecture, JP;
Takashi Abe, Miyagi Prefecture, JP;
Yoshihiko Ito, Miyagi Prefecture, JP;
James S. Anderson, Hugo, MN (US);
Denis Langlois, River Falls, WI (US);
Imation Corp., Oakdale, MN (US);
Sony Corporation, Tokyo, JP;
Abstract
In general, the invention provides a magnetic head device and linear tape drive that increase the resonant frequency and the range of a servo system. In particular, the invention provides a magnetic head device comprising a magnetic head chip with multiple magnetic head elements that is a structural part of the fine positioning system which allows the magnetic head elements follow the data tracks on the linear magnetic tape. Consequently, weight is reduced thereby increasing the resonant frequency and servo bandwidth. In another embodiment, the invention provides a magnetic head comprising bimodal actuators that are formed into an S shape and displaced by applying voltage where the polarization direction is opposite from one end to the other. In particular, the head chip may remain stable and may be driven dynamically thereby allowing the mechanical resonance of the bimodal actuator (including the head chip) to increase to 1 kHz or higher.