Appeal No. 1997-0447
Application No. 08/231,513
BACKGROUND
The appellants’ invention relates to a magnetic reluctance effect magnetic head, the
magnetic head having a specific orientation and spacing of the electrodes relative to the
upper magnetic pole to reduce variations in the required bias current to account for
variations in the manufacturing of the head. An understanding of the invention can be
derived from a reading of exemplary claim 1, which is reproduced below.
1. A magnetic reluctance effect magnetic head having a magnetic
reluctance effect element in which a forward side electrode is stacked on at
least the surface of the magnetic reluctance effect element facing a magnetic
recording medium, and in which an upper magnetic pole for conducting a
bias magnetic field is stacked on said forward side electrode for facing the
magnetic reluctance effect element,
wherein the improvement resides in that
a connecting length L1 between the magnetic reluctance effect element and
the forward side electrode is shorter than a facing length L2 over which the
upper magnetic pole and the magnetic reluctance effect element face each
other via a magnetic gap G.
The prior art references of record relied upon by the examiner in rejecting the
appealed claims are:
Tanabe et al. (Tanabe) 5,218,497 Jun. 08, 1993
Shibata et al. (Shibata) 5,247,413 Sep. 21, 1993
Claims 1 and 6 stand rejected under 35 U.S.C. § 103 as being unpatentable over
Shibata. Claims 2-5 stand rejected under 35 U.S.C. § 103 as being unpatentable
2
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007