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Servo Mechanism for Floppy Disk Drive

IP.com Disclosure Number: IPCOM000063052D
Original Publication Date: 1985-Feb-01
Included in the Prior Art Database: 2005-Feb-18

Publishing Venue

IBM

Related People

Authors:
Nassimbene, EG [+details]

Abstract

The trend toward greater track densities in floppy disk drive systems demands a servo system for accurate head positioning and track following. The concept disclosed uses the existing stepping motor drive, band and the positioning mechanisms of a conventional floppy disk drive, but adds a single roller and a simple, low cost motor to provide servo positioning for the head. As shown in the figure, the band 10, instead of going directly to the carriage 12, is made to loop around a roller 14 connected to an arm 16 of a motor 18. The band 10 is split so that it may pass through itself, which allows a single roller 14 to be used.