Browse Prior Art Database

Stacked Disk Recorder

IP.com Disclosure Number: IPCOM000097742D
Original Publication Date: 1961-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Eastwood, DE: AUTHOR

Abstract

The magnetic storage apparatus consists of a plurality of disks 1...4 arranged in an overlapping manner. The upper surface of each disk has a magnetizable surface 5 in cooperative relationship with a recording reproducing transducer 6 carried on the underside of the disk above.

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Stacked Disk Recorder

The magnetic storage apparatus consists of a plurality of disks 1...4 arranged in an overlapping manner. The upper surface of each disk has a magnetizable surface 5 in cooperative relationship with a recording reproducing transducer 6 carried on the underside of the disk above.

Devices (not shown) are provided to rotate each of the disks. The relative speeds of rotation are such that each disk rotates slightly faster than the disk immediately above. The speed differential is needed to cause the lower disk to rotate slightly more than a complete revolution for one revolution of a transducer 6 so that the head transcribes a path slightly displaced from the preceding path. In this manner, a plurality of information tracks 7 is recorded on the upper side of each disk with the exception of the uppermost disk 1.

A cam fixed to each shaft is provided to render the transducer operative only for the travel from the outer edge to the center of the disk below. Each activation of a transducer is counted so as to identify each of the tracks recorded relative to a home position.

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