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Discrete-Track Magnetic Disk Using Embossed Substrate

Takehisa ISHIDA, Osamu MORITA, Makoto NODA, Satoru SEKO, Shoji TANAKA, Hideaki ISHIOKA

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Summary :

Embossed disks with discrete magnetic tracks and servo marks are proposed and evaluated. The tracks and the servo marks are made by etching the glass substrate. The guard band depth was decided to be 0.2 µm. Using the disks, the head positioning accuracy of 0.09µm (rms) and the recording density of 192 tracks per millimeter were demonstrated.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E76-A No.7 pp.1161-1163
Publication Date
1993/07/25
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section LETTER (Special Section of Letters Selected from the 1993 IEICE Spring Conference)
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