Appeal 2007-2256
Application 10/903,064
longitudinal magnetic recording media are merely two different species in
the same field of endeavor.
As shown by factual findings (1) and (2) listed above, we determine
that Lee discloses every limitation of claim 1 on appeal except for the seed
layer being RuAl (see Answer 3). As shown by factual finding (2) listed
above, we determine that Lee further teaches that the CoTi underlayer may
have a B2 crystallographic structure. As shown by factual findings (3) and
(4) listed above, we determine that Shimizu discloses a similar magnetic
recording film to that disclosed by Lee, with an underlayer separating the
substrate from the orientation-regulating undercoat film. As shown by
factual finding (5) listed above, we determine that this orientation-regulating
undercoat film is disclosed as having a B2 crystal structure, and is
exemplified as including RuAl and CoTi as equivalents. As shown by
factual finding (4) listed above, we determine that Shimizu teaches that the
function of the soft magnetic undercoat film is to cause the perpendicular
magnetic film to be magnetized in a direction perpendicular to the substrate.
Thus, we determine that one of ordinary skill in this art would have known
that the orientation-regulating undercoat would not be concerned with the
direction of the easy-magnetization axes but would have been effective to
orient the crystal structure of above-deposited layers, which is the same
function accomplished by the CoTi layer in Lee (see factual finding (2)
listed above). Accordingly, we determine that it would have been well
within the ordinary skill in this art to use equivalent materials with B2
crystallographic structure, as taught by Shimizu, for the CoTi B2 structure
7
Page: Previous 1 2 3 4 5 6 7 8 Next
Last modified: September 9, 2013