Browse Prior Art Database

Shielding Flex Cable Between Head/Disk Assembly And Card

IP.com Disclosure Number: IPCOM000120314D
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 1 page(s) / 31K

Publishing Venue

IBM

Related People

Miles, MA: AUTHOR

Abstract

Disclosed is the use of a copper tape to shield a flex cable as it emerges from the head/disk assembly (HDA) of a disk file from radio frequency-induced noise. The embodiment described resulted in an improvement of the soft error rate of a disk file and in servo performance in relation to the signal demodulator.

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Shielding Flex Cable Between Head/Disk Assembly And Card

      Disclosed is the use of a copper tape to shield a flex
cable as it emerges from the head/disk assembly (HDA) of a disk file
from radio frequency-induced noise.  The embodiment described
resulted in an improvement of the soft error rate of a disk file and
in servo performance in relation to the signal demodulator.

      A flexible cable 1 emerging from a disk file HDA 2 is splayed
out 3 to terminate onto a card 4 with wider pitched contacts than the
flex cables.  Refer to the figure.

      A copper tape 5 is applied to both sides of the flex cable 1
between an HDA clamp 6 (securing the cable from mechanical creep and
vibration) and the splayed end of the cable 3.

      Tape 5 is insulated to prevent it from short circuiting to
terminating card 4.  Tape 5 is not grounded, neither has it any
electrical connections, thus making it easy to apply.