Appeal No. 95-3124
Application No. 08/125,311
DECISION ON APPEAL
This is an appeal from the final rejection of claims 1,
3, 4, 6, 7, 9, 11 through 15 and 17. In an Amendment After
Final (paper number 9-1/2), claim 6 was canceled.
Accordingly, claims 1, 3, 4, 7, 9, 11 through 15 and 17 remain
before us on appeal.
The disclosed invention relates to a method and apparatus
for producing a reduced write current to a data head that is
collaterally positioned with a servo head between two disks.
Claim 1 is illustrative of the claimed invention, and it
reads as follows:
1. A method for writing data, for a magnetic disk
apparatus that includes a plurality of magnetic disks that are
stacked at predetermined intervals; a servo head for reading
servo signals recorded on a servo surface of one of said
magnetic disks; a plurality of data heads, one of which is
provided for each data surface of said magnetic disks, with a
first data head being collaterally positioned with said servo
head with no intervening magnetic disk therebetween, and said
second data heads being positioned at other than said
collateral position; and an actuator for supporting said servo
head and said data heads and for positioning said servo head
and said data heads by moving them radially relative to said
magnetic disks, comprising the steps of:
producing a write current whose value is varied by
selecting either said first data head or one of said second
data heads in consonance with a head select signal and wherein
the write current produced when said first data head is
selected is less than a value of a write current that is
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