Appeal No. 2003-0065
Application 09/491,284
BACKGROUND
The invention relates to the design of magnetic recording
heads and sliders which contact the recording medium during the
reading/writing process where the leading edge is shaped so as to
push away debris as the head slides across the surface.
Claims 1 and 10 are reproduced below.
1. A recording head for reading and writing
information with respect to a rotating disk medium, said
head including a pad having a working surface which contacts
said medium during the reading/writing process, a magnetic
pole tip structure being embedded within said pad, said pad
having a leading edge and a trailing edge with said leading
edge facing in the general direction of relative motion
between said head and said medium, and wherein said leading
edge has a narrower width than said trailing edge.
10. A slider, comprising:
a transducer for transferring information to and from a
rotating disk medium during read and write operations; and
a pad which maintains substantially continuous contact
with the medium during the read and write operations,
wherein the pad has a leading edge that faces into a general
direction of relative motion between the slider and the
medium, the pad has a trailing edge that faces away from the
direction, the leading edge has a width that is
substantially perpendicular to the direction, the trailing
edge has a width that is substantially perpendicular to the
direction, and the width of the leading edge is
substantially narrower than the width of the trailing edge.
The examiner relies on the following references:
Brezoczky et al. (Brezoczky) 4,819,091 April 4, 1989
Kubo et al. (Kubo) 4,901,185 February 13, 1990
Saitoh et al. (Saitoh) 4,926,274 May 15, 1990
Fukuoka et al. (Fukuoka) 5,541,789 July 30, 1996
(effective filing date July 25, 1991)
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