Appeal No. 95-5146
Application 08/152,557
The claimed invention pertains to a longitudinal track
recording system in which a multi-gap magnetic head records and
reproduces information from longitudinal tracks on a magnetic
tape. The magnetic head has a contact face for cooperating with
the tape face of the magnetic tape. The invention concerns the
placement of a cleaning groove of predetermined size in the
contact face of the magnetic head for preventing the accumulation
of dust and dirt particles.
Representative claim 20 is reproduced as follows:
20. A longitudinal track recording system, comprising a
magnetic tape apparatus for use with a magnetic tape having one
or more longitudinal recording tracks, the magnetic tape
apparatus comprising a multi-gap magnetic head for writing and/or
reading the magnetic tape, which magnetic head has a contact face
for cooperation with a tape face of the magnetic tape, the head
comprising a transducing structure having transducing gaps
terminating in the contact face, characterized in that the
contact face is provided with at least one cleaning groove for
cleaning the tape face, which groove at the contact face has a
width dimension of between 100 and 300 Fm and which groove
extends at least substantially parallel to the transducing gaps
and has at least one wall portion oriented at least substantially
transversely to the contact face and constituting a scraping edge
at the contact face, which scraping edge has a radius of
curvature of between 1 and 5 Fm.
The examiner relies on the following references:
Soda et al. (Soda) 5,313,342 May 17, 1994
(effectively filed Nov. 29, 1990)
Kimura et al. (Kimura) 1-317261 Dec. 21, 1989
(Japanese Kokai)
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