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In a magnetic tape head having a contoured surface 1 (Fig 1) in which a transducing gap 2 is disposed, two distinct air bearings are formed in areas 3 and 4 of the head surface.
English (United States)
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Magnetic Tape Head
In a magnetic tape head having a contoured surface 1 (Fig 1) in which a
transducing gap 2 is disposed, two distinct air bearings are formed in areas 3 and
4 of the head surface.
In the area 4, a primary air bearing is formed as a result of the head contour.
This primary air bearing forms a high spacing stable platform and serves to
support the magnetic tape 5 which moves past the surface 1. Close control of
the spacing between the head and tape is achieved in area 3, where a secondary
air bearing is produced by means of a blind slot 6 formed at the leading edge of
the head, preceding the gap 2. The configuration may be used with one or more
gaps, and accordingly with multiple blind slots.
A port 7 may also be used, instead of a blind slot, to form the secondary
bearing, as illustrated in Fig. 2.
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