QMS 2060 Reference page 74

Allows your printer to emulate a monochrome or color plotter.
Menu Administration/Emulations/PCL5E/Monochrome GL/2
Choices On—Sets the printer to monochrome (2 pen).
Off—Sets the printer to color (8 pen). Since a monochrome
print system has two pen colors only (black and white),
grayscale patterns are substituted for other colors.
The printer maps each pen to its assigned color, then converts
the color to a grayscale using the National Television System
Committee (NTSC) color standard for luminosity coefficients
(Additive System):
Y = .3R + .59G + .11B
Notes
Examples on How to Use the Color Standard Formula
White
Black
Red
Green
Yellow
Blue
Magenta
Cyan
Default On
Pen Color Defaults:
Pen 0 = White
Pen 1 = Black
Pen 2 = Red
Pen 3 = Green
Pen 4 = Yellow
Pen 5 = Blue
Pen 6 = Magenta
Pen 7 = Cyan
Y = [(1*0.3) + (1*0.59) + (1*0.11)]—100% gray
Y = [(0*0.3) + (0*0.59) + (0*0.11)]—0% gray
Y = [(1*0.3) + (0*0.59) + (0*0.11)]—30% gray
Y = [(0*0.3) + (1*0.59) + (0*0.11)]—59% gray
Y = [(1*0.3) + (1*0.59) + (0*0.11)]—89% gray
Y = [(0*0.3) + (0*0.59) + (1*0.11)]—11% gray
Y = [(1*0.3) + (0*0.59) + (1*0.11)]—41% gray
Y = [(0*0.3) + (1*0.59) + (1*0.11)]—70% gray