Appeal No. 96-0992
Application 08/293,936
In the system known heretofore, regulation of the
inking process has been carried out accordingly
[sic, according] to densitometric, i.e. opacity,
measurements of the printing colors involved . . . .
The control of the inking process [by] . . . this
known method of inking control is not always fully
satisfactory.
According to the present invention, the
principle of inking controls regulated by color
density is abandoned and replaced by regulation of
inking controls based on spectral color measurements
and colorimetry.
The following additional explanation of the invention is
found on pages 5 and 6 of the main brief:
In standard color coordinate systems, each set
of color coordinate values (such as the L, a, b
values) represent coordinates which uniquely define
the location of a color in a three dimensional color
space. In accordance with exemplary embodiments of
the present invention, the measured colorimetric
coordinates are then compared against reference
coordinates to provide a colorimetric deviation.
Given that conventional printing machines controlled
ink thickness in response to density deviations,
exemplary embodiments of Appellants’ invention are
directed to using an empirically determined
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