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. 28, 2015
Filed:
May. 12, 2011
Chiuming Lueng, Hong Kong, CN;
Mankit Lee, Hong Kong, CN;
Cheukwing Leung, Hong Kong, CN;
Juren Ding, Hong Kong, CN;
Rongkwang NI, Hong Kong, CN;
Chiuming Lueng, Hong Kong, CN;
Mankit Lee, Hong Kong, CN;
Cheukwing Leung, Hong Kong, CN;
Juren Ding, Hong Kong, CN;
Rongkwang Ni, Hong Kong, CN;
SAE Magnetic (H.K.) Ltd., Hong Kong, CN;
Abstract
A reader sensor comprises a first shielding layer, a second shielding layer, a read element formed therebetween, and a pair of permanent magnet layer respectively placed on two sides of the read element; and it further comprises a magnetic field generating means formed beside the read element and arranged for providing a magnetic field with a direction perpendicular to the first shielding layer and the second shielding layer, thereby stabilizing the reading performance of the reader sensor. The invention can stabilize the reading performance, ameliorate the unstable defective reader sensor, and decrease the waste and the manufacturing cost. The present invention also discloses a magnetic head, a HGA and a disk drive unit.