Appeal No. 2000-1243
Application 08/826,112
The transmissivities
of the recording layers
are described as follows:
[R]ecording layer (2) must transmit lights of (84) and
(86). Although it is ideal to transmit 100%, about 50%
will allow operation as well. Then, although recording
layer (4) must transmit light of ( 86), it is all right
whether it transmits light of ( 82) or not. The last
recording layer (6) may record and replay with laser
beam of (86); and it is all right that it does or does
not absorb lights of (82) and (84).
Translation at 6, 1st full para. As regards wavelength 82, we
understand this passage to mean that it is immaterial whether
layer 2 is partially reflective and partially transmissive with
respect to that wavelength, not as teaching that the materials
disclosed as suitable for forming layer 2 are in fact partially
reflective and partially transmissive with respect to that
wavelength.
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