Appeal No. 1998-2591 Page 10
Application No. 08/636,304
depicts each of its rotary heads as having equal track widths.
Relying on Hasegawa only to disclose "a plurality of
playback head pairs," (Examiner's Answer at 6), and on
Heitmann only to show "a switching circuit," (id. at 9), the
examiner fails to allege, let alone show, that either
reference cures the deficiency of Takayama. Because Takayama
shows its rotary heads as having equal track widths, we are
not persuaded that teachings from the prior art would have
suggested the limitations of "playback heads in said plurality
of playback head pairs have a track width wider than the track
width of the recording heads ...." Therefore, we reverse the
rejection of claims 1-3, 10-16, and 18-21 as obvious over
Takayama in view of Hasegawa and the rejection of claims 4-9
and 17 as obvious over Takayama in view of Hasegawa further in
view of Heitmann.
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