Combination Between Rgb And Cmyk - Riso ComColor IS900C Instruction Manual

Combination between RGB and CMYK

You can change the Gamma settings in the printer driver. For example, Green level and Blue level will
reflect to Cyan density. However when you reduce the Green level and Blue level, Red level will increase
relatively. As a result, print result will be slightly red.
Basically ink density level will be calculated with following formula.
Cyan= (255-R)/255x100(%)
Magenta= (255-G)/255x100(%)
Yellow= (255-B)/255x100(%)
50
Black
R: 0
G: 0
B: 0
Cyan
R: 0
G: 255
B: 255
Blue
R: 0
G: 0
Magenta
B: 255
R: 255
G: 0
B: 255
Explanation
Green
R: 0
G: 255
B: 0
Red
R: 255
G: 0
B: 0
Colour
Yellow
R: 255
G: 255
B: 0
White
R: 255
G: 255
B: 255