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:
Jun. 09, 2009
Filed:
Feb. 16, 2006
Takehiko Hamaguchi, Odawara, JP;
Atsushi Nakamura, Koganei, JP;
Yasutaka Nishida, Kodaira, JP;
Masafumi Mochizuki, Koganei, JP;
Hideki Sawaguchi, Kokubunji, JP;
Takehiko Hamaguchi, Odawara, JP;
Atsushi Nakamura, Koganei, JP;
Yasutaka Nishida, Kodaira, JP;
Masafumi Mochizuki, Koganei, JP;
Hideki Sawaguchi, Kokubunji, JP;
Hitachi Global Storage Technologies Japan, Ltd., Tokyo, JP;
Abstract
A magnetic disk apparatus including: a disk holding data as magnetic information on a magnetic recording film; a head to perform writing and reading of the magnetic information; a rotary actuator to move the head in a radial direction of the disk; plural heat elements in the head to locally heat the disk; a write element in the head to apply a magnetic field to the disk; and means for selecting at least one heat element from the plural heat elements, wherein the means for selecting the heat element selects at least one heat element from the plural heat elements so as to bring a center line of an area heated by the heat element and a center line of the position of the magnetic field generated by the write element into approximate correspondence, in correspondence with a relative angle between the head and a direction of movement of the disk.