Title :
A new magnetic disk with servo pattern embedded under recording layer
Author :
Ohtsuka, Y. ; Koshikawa, T. ; Aikawa, K. ; Maeda, H. ; Mizoshita, Y.
Author_Institution :
File Memory Lab., Fujitsu Labs. Ltd., Atsugi, Japan
fDate :
9/1/1997 12:00:00 AM
Abstract :
In this paper, we propose a new concept and fabrication process for magnetic disks with embedded servo patterns, named ESPAR. A servo pattern for phase detection consisting of straight lines is formed by photolithography. The disk has a flat and smooth surface for proximity recording. Servo layer thickness and recording layer thickness can be designed independently. We fabricated the disk and demonstrated the demodulation of the servo signal
Keywords :
magnetic disc storage; photolithography; servomechanisms; ESPAR; demodulation; embedded servo pattern; fabrication; magnetic disk; phase detection; photolithography; proximity recording; Demodulation; Disk recording; Fabrication; Lithography; Magnetic heads; Magnetic recording; Magnetic separation; Phase detection; Reflective binary codes; Servomechanisms; Vibrations; Writing;
Journal_Title :
Magnetics, IEEE Transactions on
