Browse Prior Art Database

Disc File with Built in Ionizer

IP.com Disclosure Number: IPCOM000050701D
Original Publication Date: 1982-Dec-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 63K

Publishing Venue

IBM

Related People

Eisenmann, DE: AUTHOR

Abstract

Disks 15 in disk drive 10 (Fig. 1) build up a static charge as they rotate because of the polymer coating on the disk surfaces. Thus even if the head arm suspension 20 (Fig. 2) is grounded, the disk 15 becomes charged. Particulate contaminants in the disk enclosure are attracted to charged surfaces and tend to buildup between the head and disk. This can lead to a crash between the heads and disks.

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Disc File with Built in Ionizer

Disks 15 in disk drive 10 (Fig. 1) build up a static charge as they rotate because of the polymer coating on the disk surfaces. Thus even if the head arm suspension 20 (Fig. 2) is grounded, the disk 15 becomes charged. Particulate contaminants in the disk enclosure are attracted to charged surfaces and tend to buildup between the head and disk. This can lead to a crash between the heads and disks.

In Fig. 1, an ionized air generator 25 is built into the disk drive 10 so as to be positioned ahead of air filter 30. The ions generated by the ionized air generator 25, such as polonium ions, are in the angstrom range and, as such, pass through filter 30 whereby ionized air enters the disk enclosure and flows around disk 15 and head assembly 20 in the direction of the arrows. The ions neutralize the static charges, and contaminant particles are prevented from accumulating on the disk and head surfaces.

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