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. 14, 2005
Filed:
Jul. 29, 2004
Yingjian Chen, Fremont, CA (US);
Xiaozhong Dang, Fremont, CA (US);
Francis H. Liu, Fremont, CA (US);
Kroum Stoev, Fremont, CA (US);
Hai Jiang, Fremont, CA (US);
Yugang Wang, Milpitas, CA (US);
Xizeng Shi, Fremont, CA (US);
Yingjian Chen, Fremont, CA (US);
Xiaozhong Dang, Fremont, CA (US);
Francis H. Liu, Fremont, CA (US);
Kroum Stoev, Fremont, CA (US);
Hai Jiang, Fremont, CA (US);
Yugang Wang, Milpitas, CA (US);
Xizeng Shi, Fremont, CA (US);
Western Digital (Fremont), Inc., Fremont, CA (US);
Abstract
A read/write head and method of making the same are used in a data storage system, such as a disk drive, for perpendicular magnetic recording of data. The head employs a two-layer pole design with a main pole made of sputtered high moment magnetic material, and an adjunct pole made of electroplated soft magnetic film. The main pole is used to write data onto the medium, and is formed over the write coil. The adjunct pole is substantially recessed from the air bearing surface and is formed over the main pole. The present head design significantly enhances the magnetic write field, and substantially reduces side-writing that result in accidental erasure of data in adjacent tracks on the magnetic recording medium.