Browse Prior Art Database

Handling Apparatus for Flexible Magnetic Disks

IP.com Disclosure Number: IPCOM000088178D
Original Publication Date: 1977-May-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Parker, JE: AUTHOR [+2]

Abstract

Coated flexible magnetic disks are extremely susceptible to damage and/or contamination caused by physically contacting the disks during handling. These defects result in recording abnormalities or dropouts. The apparatus in the figure reduces the aforementioned problems by balancing opposing magnetic and pneumatic forces, thereby "levitating" the disks and avoiding physical contact therewith.

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Handling Apparatus for Flexible Magnetic Disks

Coated flexible magnetic disks are extremely susceptible to damage and/or contamination caused by physically contacting the disks during handling. These defects result in recording abnormalities or dropouts. The apparatus in the figure reduces the aforementioned problems by balancing opposing magnetic and pneumatic forces, thereby "levitating" the disks and avoiding physical contact therewith.

Referring to the figure, a coated flexible magnetic disk 10 is picked up and "levitated" between two opposing forces created by disk handling apparatus 12. One force, a magnetic field force, represented by numeral 14, attracts coated flexible magnetic disk 10.

Another force, a gas cushion force, represented by numeral 16, repels the disk. These opposing forces are regulated such that coated flexible magnetic disk 10 reaches a point of equilibrium and "levitates" just below disk handling apparatus 12.

A magnetic plate 18, for producing the magnetic field force, is mounted to a nonmagnetic housing 20 of slightly larger diameter than coated flexible magnetic disk 10. A porous nonmagnetic plate 22 is sealably mounted to edge guide 24, which, in turn, is mounted to magnetic plate 18, thereby forming disk handling apparatus 12. A manifold gas supply (not shown) is attached to disk handling apparatus 12 by gas supply line 26, allowing gas, represented by numeral 28, to permeate through porous nonmagnetic plate 22, thereby creating a u...