Appeal No. 94-3359
Application 07/941,566
ordinary skill in the art would not have been motivated to use
the Minsk compounds as "a primary developer for black and white
silver halide photographic materials." We disagree.
There is no doubt but that Minsk discloses the very
same compounds, used as silver halide developers in the Minsk
invention, as appellants claim here as useful for developing
silver halide emulsions. That is, Minsk discloses non-diffusing
developers for incorporation in color photographic silver halide
emulsion layers. For the developer of claim 5 and claim 6(5),
see column 3, lines 29 through 35. For the developer of claims 7
and 8, see column 3, lines 55 through 65.
The only difference between the subject matter claimed
by appellants and the invention described by Minsk is that
appellants claim a silver halide emulsion photographic element
for use in black and white photography. Nonetheless, the
fundamental chemistry involved in the development of photographic
images by silver halide emulsion technology is the same for black
and white photography and color photography - the developer
reduces silver halide to elemental silver leaving a latent image
and the developer, thus, becomes oxidized.
We are satisfied that a person of ordinary skill in the
art knowing from the Minsk disclosure that developers may be
anchored in the emulsion layer where they are placed by using
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