Browse Prior Art Database

Disk Pack Stabilization

IP.com Disclosure Number: IPCOM000083235D
Original Publication Date: 1975-Apr-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Barbeau, RA: AUTHOR [+2]

Abstract

By using storage disks 1 of differing diameters and interdisk spaces 2 of differing widths, in a pack of co-rotating floppy-type storage disks, jitter and wobble effects are reduced. Radial air flow through porous spacer disks 3 of various widths creates pressure differences relative to the storage disks (due to varied widths of the spacers), which causes the smaller diameter disks to "lean" towards the larger diameter disks. This exerts a stiffening and dampening action on the storage disks 1 resulting in reduced jitter and wobble.

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Disk Pack Stabilization

By using storage disks 1 of differing diameters and interdisk spaces 2 of differing widths, in a pack of co-rotating floppy-type storage disks, jitter and wobble effects are reduced. Radial air flow through porous spacer disks 3 of various widths creates pressure differences relative to the storage disks (due to varied widths of the spacers), which causes the smaller diameter disks to "lean" towards the larger diameter disks. This exerts a stiffening and dampening action on the storage disks 1 resulting in reduced jitter and wobble.

Positions of interface spaces 2 are thereby more stable and more reliably locatable for access deflection. Also, the spacing between the large diameter disks 1 makes the selection process easier. A largest diameter "flag" disk can be located at discrete group intervals in the pack, to allow for group location in the access selection process.

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