Appeal No. 96-1707
Application 08/221,999
BACKGROUND
The invention is directed to a combined thin film magnetic head that has two
separate heads formed on a single substrate, one for analog and the other for digital
operation. The two heads are fabricated on the same substrate and placed linearly
adjacent to each other rather than in a stacked arrangement.
Independent claim 7 is representative of the invention and reproduced as follows:
A combined thin film magnetic head comprising:
a first yoke magnetic head; and
a second yoke magnetic head having at least a portion of a recording and
reproducing track overlapped with the first yoke magnetic head and having longer
recording and reproducing track width than said first yoke magnetic head formed
on the same substrate, wherein
said first yoke type magnetic head includes;
a first lower yoke of a magnetic thin film formed approximately parallel to the
surface of the substrate,
a first interlayer insulating layer formed on an upper surface of the first lower
yoke,
a first electromagnetic transducing element provided on the first interlayer
insulating layer,
a second interlayer insulating layer formed on the first electromagnetic
transducing element, and
a first upper yoke of a magnetic thin film formed along an upper surface of
the second interlayer insulating layer, said first upper yoke and said first lower yoke
2
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