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Staggered Track Timing Disk

IP.com Disclosure Number: IPCOM000092841D
Original Publication Date: 1967-Mar-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Bradford, RC: AUTHOR [+3]

Abstract

Timing disk 1 has alternate tracks 10 and 11 of magnetically retentive media 2 fastened to or imprinted on its surface. Media 2 can be applied to disk 1 by various processes including silk screening, etching, etc. Permanent magnet 3 is supported adjacent to both tracks of magnetic media 2 for magnetizing them. Flux responsive transducer 4 has a head gap that extends across both tracks of media 2. The latter two tracks are alternately positioned so that they alternately actuate transducer 4 as disk 1 rotates beneath such transducer. Thus the frequency of output from transducer 4 is twice the frequency of the recording media sensed from any one track.

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Staggered Track Timing Disk

Timing disk 1 has alternate tracks 10 and 11 of magnetically retentive media 2 fastened to or imprinted on its surface. Media 2 can be applied to disk 1 by various processes including silk screening, etching, etc. Permanent magnet 3 is supported adjacent to both tracks of magnetic media 2 for magnetizing them. Flux responsive transducer 4 has a head gap that extends across both tracks of media 2. The latter two tracks are alternately positioned so that they alternately actuate transducer 4 as disk 1 rotates beneath such transducer. Thus the frequency of output from transducer 4 is twice the frequency of the recording media sensed from any one track.

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