HP PCL/PJL reference (PCL 5 Color) - Technical Reference Manual

EN Using Palettes (Color LaserJet, 5, 5M, DeskJet) C-19
Note Foreground color interacts with color raster images. In the printer, all
color raster is resolved into three binary raster planes of CMY.
Foreground color is applied to these planes, modifying the color
image. For no interaction, set foreground color to black when sending
color raster images.
After a foreground color is selected, changing any of the following will
not change foreground color until a new Foreground Color command
(
?*v#S) is issued:
• Active Palette
• Configure Image Data (CID) command
• Render Algorithm
• User Defined Dither Matrix
• Gamma Correction
• Color Lookup Tables
• Viewing Illuminant
As an exception, Monochrome Print Mode (
?&b#M) immediately
maps foreground color to its equivalent gray. Similarly, deselection of
Monochrome Print Mode immediately returns foreground color to its
color equivalent.