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Browse Prior Art Database

Shield and Cleaning Device for Band Driven Access Mechanism for Magnetic Disks

IP.com Disclosure Number: IPCOM000082346D
Original Publication Date: 1974-Nov-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Castrodale, DO: AUTHOR [+3]

Abstract

This shield and cleaning device ensures that no foreign material will enter the interface 7 between the band 4, carrying a magnetic read/write head 6 across a magnetic disk A, and a drive pulley 3 for the band 4.

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Shield and Cleaning Device for Band Driven Access Mechanism for Magnetic Disks

This shield and cleaning device ensures that no foreign material will enter the interface 7 between the band 4, carrying a magnetic read/write head 6 across a magnetic disk A, and a drive pulley 3 for the band 4.

The band access mechanism as shown consists basically of an electric motor of the stepping type, attached to a cast stand 2, driving the pulley 3 having metal band 4 in looped configuration attached to pulley 3. Band 4 also runs over a pulley 5 and has the magnetic read/write head 6 attached to it. Head 6 traverses across magnetic disk A which is rotatable on a center a. Since the diameter of drive pulley 3 must be closely toleranced on its outside diameter to ensure translational accuracy of the notion of read/write head 6 across disk A, any foreign material entering the band-pulley interface 7 will cause a loss of translational accuracy because it will change the effective drive pulley diameter.

This problem is eliminated by casting ribs 8 on the casting of motor stand 2, as shown in Fig. 2. A slotted foam or fiber wiper 9 is placed over band 4 such that the band runs in the slots in this wiper, thus ensuring that foreign material adhering to band 4 will be wiped off prior to its entering the interfaces 7 of band 4 and pulley 3. Wiper 9 is held in place over band 4 by a suitable rib pattern 10 in the casting of motor stand 2. For further protection, a cover plate 11 is mount...