Browse Prior Art Database

Flexible-Ceramic Compliant-Tape-Guide

IP.com Disclosure Number: IPCOM000103062D
Original Publication Date: 1990-May-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 48K

Publishing Venue

IBM

Related People

Garcia, JL: AUTHOR [+3]

Abstract

Figure 1 shows compliant tape guiding for seating magnetic tape (10) against reference flanges (20) so that the tape can be reliably guided over magnetic head (30). This article describes compliant tape guides made entirely of highly elastic zirconia ceramic. The shape of the compliant guides is that of cantilever beams (40). The zirconia ceramic has a low Young's modulus and a high flexural strength which allows the cantilever beams to flex without fracturing in their required operating range.

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Flexible-Ceramic Compliant-Tape-Guide

      Figure 1 shows compliant tape guiding for seating magnetic tape
(10) against reference flanges (20) so that the tape can be reliably
guided over magnetic head (30).  This article describes compliant
tape guides made entirely of highly elastic zirconia ceramic.  The
shape of the compliant guides is that of cantilever beams (40).  The
zirconia ceramic has a low Young's modulus and a high flexural
strength which allows the cantilever beams to flex without fracturing
in their required operating range.

      The thickness and length of the cantilever beams are chosen to
complement the elasticity of the zirconia ceramic. The width of the
cantilever beams is chosen so that the magnetic tape does not
experience too high an edge stress. The edges of the cantilever beams
are rounded to avoid tape damage.  For the best surface finish, the
zirconia ceramic which was co-precipitated is the preferred choice.

      These zirconia ceramic tape guides offer certain advantages.
Their elasticity allows simplicity in design and manufacturability.
They are also wear resistant.  Tape vibrations are minimized because
these cantilever beams have a high natural frequency along the
longitudinal and transverse directions of the tape.  Finally, the
geometry and preload force of these zirconia compliant guides can be
tailored to provide the desired edge load on the magnetic tape.

      Disclosed anonymously.