Appeal No. 96-3851
Application No. 08/341,849
codes for any said given pixel requiring printing of both
black ink and color ink." On the other hand, in the abstract2
Vaughn describes the invention as "a method of processing
color bit-map graphics data in a four-color liquid-ink
printing system, so as to maximize use of black ink while
maintaining a minimum spacing between black and color inks"
(underlining added for emphasis). In other words, the primary
purpose of Vaughn is to separate black ink and color ink.
Thus, Vaughn specifically teaches not to print black ink and
color ink anywhere near each other, and therefore is not
capable of printing both black ink and color ink at the same
pixel, as recited in claim 4.
2The use of both color and black inks at the same pixel would appear to
be anomalous with appellant's stated advantages (Specification, pages 5-6)
that "by color separating the data into four-color raster planes, the true
black (K) ink dot data is all that need be sent during the printing of all
true black image rasters, at potentially substantially reduced overhead" and
(Specification, page 9) that "for ink-jet printers providing for true black
(K) and tri-color (CMY or RGB) ink printing wherein black and colored ink
drops cannot be deposited in a closely adjacent relationship without excessive
black-to-color bleeding, the invented method and system provide a unique
palette design, coding and selection that enables a printer server to utilize
either true black or process black for black swath printing . . . mak[ing] it
possible for a printer server to optimize print quality without significant
overhead."
5
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