Appeal No. 2004-2011
Application No. 09/919,239
r is zero, -1, -2 or -3; and
Z is oxygen or sulfur.
The examiner relies upon the following references as
evidence of obviousness:
Newmiller 4,865,964 Sep. 12, 1989
Keevert, Jr. et al. 4,945,035 Jul. 31, 1990
(Keevert)
Makuta et al. 5,683,853 Nov. 4, 1997
(Makuta)
McDugle et al. 4,933,272 Jun. 12, 1990
(McDugle)
Research Disclosure 437013, "Color paper with exceptional
reciprocity performance," Section XIV (Sept. 2000)
Appellants' claimed invention is directed to a photographic
element comprising a silver chloride emulsion layer having first
and second fractions of different composition. The first
fraction contains more of a hexacoordination metal complex of
recited formula (I) whereas the second fraction contains more of
a hexacoordination metal complex which satisfies recited formula
(II). The metal complex of formula (I) is a speed enhancing
dopant while the metal complex of formula (II) is a contrast
improving dopant. According to appellants, by employing the two
classes of dopants differentially in separate fractions of the
silver halide grains, "improved LIK performance is achieved for
optical and digital exposed elements" (page 2 of Brief, second
-3-
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