Quasi-Static Read/Write Tester with Sliding Reciprocation for Perpendicular Magnetic Recording

Takayuki KUSUMI  Kiyoshi YAMAKAWA  Naoki HONDA  Kazuhiro OUCHI  

IEICE TRANSACTIONS on Electronics   Vol.E86-C   No.9   pp.1868-1873
Publication Date: 2003/09/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Recent Progress of High-Density Disk Storage)
high density magnetic recording,  quasi-static read/write tester,  perpendicular magnetic recording,  head-to-medium spacing,  pitching motion,  backward recording,  

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To develop ultra high density magnetic recording systems, a quasi-static system with a reciprocating medium motion against a stand still head was developed for a read/write tester. Double-layered perpendicular recording media and merged GMR heads assembled on a conventional head-gimbal assembly (HGA) were applied to evaluate the read/write performances. A smooth sliding contact motion was achieved, however, the head-to-medium spacing was varied depending on the head motion direction. The spacing in the reverse running direction of the conventional head slider seems to be smaller than that of the flying height in a high-speed spin stand. A merged ring head was suitable for perpendicular magnetic recording in the case of the reverse direction sliding.