Appeal No. 1998-0189
Application 08/196,933
13. JP’279 teaches that the hetero-ring compound (I) is present in an amount of
from 0.2 to 100 mmol/m2, preferably from 1.0 to 50 mmol/m2, of the support.
Translation, page 7, lines 13-15.
14. JP’279 teaches that the support includes paper or transparent thermoplastic
films. Translation, page 11, lines 18-25.
15. JP’279 exemplifies two ink-jet recording media that comprise a paper
support that is coated with size-pressing liquids (60g/m2) comprising 2% of polyvinyl
alcohol (PVA 117, Kurarei), 5% of white carbon (NIPSHEL LP, Nihon Silica), and 5-
mercapto-1-methyl tetrazole salt in amounts of 2.0 or 4.0%. Translation, page 19,
Operational examples 5 and 6.
16. JP’279 does not exemplify a jet ink recording medium that is coated with
either pyrimidine compound in finding 11.
Although not exemplified, the ink jet recording medium taught by JP’279 meets
the requirements of the claims on appeal in regard to: (1) the paper or transparent
polymeric substrate, (2) the active pyrimidine compound, (3) the amounts of the active
compound and binder resin, and (4) the suitability of the recording medium to receive
printed images and images of rapidly absorbing aqueous ink. Accordingly, we hold
that the substitution of 1-methyl-5-mercapto tetrazole with either 2-mercapto-pyrimidine
or 2-mercapto-4-methyl-pyrimidine, as the hetero-ring compound, in the recording
media in finding 15, would have been obvious to the person having ordinary skill in the
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