Appeal No. 1997-3157
Application No. 08/286,224
claims 1 and 2 were amended.
The disclosed invention relates to a magnetic head device
that maintains a core piece of a head at a constant floating
height over all of the area of a rotating disk when performing
a read/write operation.
Claim 1 is illustrative of the claimed invention, and it
reads as follows:
1. A magnetic head device with constant head floating
height including a head arm attached to a drive shaft of a
hard disc drive device, a suspension means extending from said
head arm, and a head slider fixed on the tip end of said
suspension means having an air bearing surface extending along
said head arm in the longitudinal direction thereof, wherein
the distance from the fulcrum for rotating/driving said head
arm to the center of a magnetic disc D (mm), the distance from
the fulcrum of said head arm to the center of said head slider
L (mm), and the radial width of the recording area of said
magnetic disc W (mm), the distance from the rotating/driving
fulcrum of said head arm to the center of the slider is so set
to satisfy the relation:
0 # (D - L) mm # (0.6 W - 4.4) mm
wherein, the radial width W of said magnetic disc is
between 12.5mm and 22.5mm, a core piece is positioned so as to
be maintained at a constant floating height over all area of
the rotating disc when performing a reading/writing operation.
The references relied on by the examiner are:
Asano 4,819,100 Apr. 4,
1989
Hatch et al. (Hatch) 5,027,241 June 25,
1991
2
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