Printed Media technology for an effective and inexpensive servo track writing of HDDs

Author

Ishida, Tatsuaki ; Miyata, Keizo ; Hamada, Taizou ; Tohma, Kiyokazu

Author_Institution

HD Dev. Centre, Matsushita Electr. Ind. Co. Ltd., Osaka, Japan

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

1875

Lastpage

1877

Abstract

As an alternative method for the servo track writing of hard disk drives (HDDs), a magnetic contact duplication method by using a lithographically patterned master disk has been proposed and investigated. On the master disk, magnetic film pattern according to the information signal to be printed on slave disks is provided by a lithography technique. In this method, unlike the anhysteretic process of the conventional contact duplication method for magnetic tapes, the master information never disappears when a large external field is applied to the master while printing. This duplication method, as we call the Printed Media technology, can provide a very effective and inexpensive lump-sum servo track writing method for HDDs

Keywords

disc drives; hard discs; servomechanisms; Printed Media technology; hard disk drive; lithography technique; magnetic contact duplication; magnetic film pattern; master disk; servo track writing; slave disk; Disk recording; Hard disks; Lithography; Magnetic films; Magnetic flux; Magnetic heads; Master-slave; Printing; Servomechanisms; Writing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.950995

Filename

950995