Appeal No. 1996-1876
Application No. 08/344,663
Claim 1 is representative and is reproduced below:
1. An optical information recording medium comprising a
light transmitting substrate, a light absorptive layer
containing at least one light absorbing substance formed on
the substrate and light reflective layer made of a metal film
formed on the light absorptive layer, wherein an optical
parameter represented by D = n d /8 wherein n is the realabs abs abs
part of the complex refractive index of the light absorptive
layer, d is the average thickness in nanometers of the light
abs
absorptive layer and 8 is the wavelength in namometers of a
reading laser beam, is 0.6<D<1.6.
The reference of record relied upon by the examiner is:
Oba et al. (Oba) 4,767,693 August
30, 1988
The appealed claims stand rejected under 35 U.S.C. § 112,
second paragraph. Appealed claims 1-4 also stand rejected
under 35 U.S.C. § 102(b) as anticipated by, or in the
alternative, under 35 U.S.C. § 103 as obvious over Oba.
The subject matter on appeal is directed to an optical
information recording medium structurally defined as
comprising a light transmitting substrate, a light absorptive
layer containing at least one light absorbing substance formed
on the substrate, and a light reflective layer made of a metal
film formed on the light absorptive layer. Appellants have
allegedly discovered that an optical parameter D as defined by
a recited equation in claim 1 must be greater than 0.6 and
2
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