Method of generating an expanded color set of a low resolution c

Details Method of generating an expanded color set of a low resolution c Method of generating an expanded color set of a low resolution c

1989-04-20

1990-01-16

Reynolds, B. A.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 46, 358 75, 358 79, 358 80, 358296, G01D 900, G03F 308

Patent

active

048946656

ABSTRACT:
In a low resolution color printer having a color set, a set of shaded colors is generated thereby expanding the color set of the printer. The method for generating the shaded colors determines if a critical line is to be printed. Then a check is made to determine if a shaded color is to be printed. If a pattern of a shaded color is to be printed, including a non-critical line, a first algorithm is used to generate a print buffer by interspersing a dark (quasi-black) colored pixel among the colored pixels, the blending effect resulting in a shaded color. If a critical line of a shaded color is to be printed, a second algorithm is utilized (to overcome a deficiency of the first algorithm) to insure an interspersing of the dark pixels with colored pixels. Otherwise, the pattern is printed in the designated color.

REFERENCES:
patent: 4682216 (1987-07-01), Sasani et al.

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