Appeal No. 2000-1243
Application 08/826,112
Recording layer 2 can be formed of a chalcogenide material
such as Sb2S3, which allows recording and replay with light
having a wavelength from 400 nm to 500 nm. Translation at 7, 1st
para. If rewritability is required, the layer should be
sandwiched between protective films in the manner shown in
Figure 2 (not reproduced herein). Id. If only a "write once"
capability is required, these protective films can be omitted.
Id.5 Recording layer 4 is formed of a different material from
layer 2 and is capable of recording and replay with light of
600 nm, while layer 6 is formed of yet another material and is
capable of recording and replay with light of 780 nm to 830 nm.
Id., 2d para. Horikago additionally discloses that layer 2 can
be formed on a pre-recorded pit pattern representing tracking or
address signals:
As illustrated in the Figure 1, [the invention] uses a
transparent substrate (1) made of polycarbonate
substrate of injection molding, transparent plastic
substrate by (2P method) using UV ray curing resin, or
glass substrate. Laser beams (8), (9), and (10) are
entered from substrate (1) side. On these substrate
surfaces (1), groove or tracking purpose or address
signal pit[s] are transferred (not illustrated in the
Figure 1). On this, first recording layer (2) is
formed through an evaporation method or a sputtering
method.
5 We agree with Appellants (Reply Brief at 3) that the
examiner is incorrect to characterize layer 2 when used in the
"write once" mode as being "non-recordable." Answer at 12.
10
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