Systems and methods that improve fluid color output by using clear or white fluid

1. An imaging system that forms an image on a receiving medium, comprising:

a fluid ejector that ejects fluid onto the receiving medium, the fluid ejector being a print head that ejects solid or phase change inks that are solid at ambient temperatures and liquid at elevated operating temperatures;

a fluid ejection circuit that drives the fluid ejector; and

a controller that controls the fluid ejector to eject the fluid to include a non-white and non-clear fluid or one of at least white or clear W fluid on each pixel on the receiving medium, the controller controlling the fluid ejection circuit or routine to convert a cyan (C), magenta (M), yellow (Y) and black (K) signal with pixel coverage from zero to 400 percent to a cyan, magenta and yellow signal with 100 percent coverage for all pixels,

wherein the fluid ejector ejects substantially a single layer of fluid onto the receiving medium, and

the controller controlling the fluid ejection circuit to perform the conversion by:

substituting c, m, y for k and setting k to zero by calculating

c= min(100, c+k ),

m= min(100, m+k ),

y= min(100, y+k ),

k=0;

computing cmy component by cmy=min(c, m, y);

reducing c, m, and y by

c=c−cmy;

m=m−cmy;

y=y−cmy;

computing and subtracting secondary color components (my, cy, cm) from c, m and y using

cm= min( c, m ),

my= min( m, y ),

cy= min( c, y ),

c=c− ( cy+cm ),

m=m− ( my+cm ),

y=y− ( my+cy ),

adding one third tertiary color components using

c=c+cmy/ 3,

m=m+cmy/ 3,

y=y+cmy/ 3;

adding one half of secondary color components (my, cy, cm) to c, m and y using

c=c+cy/ 2+ cm/ 2,

m=m+my/ 2+ cm/ 2,

y=y+my/ 2+ cy/ 2; and

computing white as w=100−(c+m+y).

2. The imaging system of claim 1 , the controller controlling the fluid ejection circuit or routine to perform a dithering process for halftoning.

3. A xerographic marking device including the imaging system of claim 1 .