Oce COLOR SYSTEM 110 Operator's Manual page 129

Basic Knowledge About Color
Primary Colors — RGB and CMYK
The primary colors have two types; "primaries of light" and "primaries of material."
The primaries of light refer to lights of red (R), green (G), and blue (B). When all of these
three colors are mixed, the result is transparent (white light). The method for presenting a
color by mixing the primaries of light is called the "Additive Process." The Additive Process is
used to generate colors on a color TV or a computer CRT.
The primaries of material are cyan (C), magenta (M), and yellow (Y) produced when the
primaries of light overlap each other. By mixing C, M, and Y in various combinations, colors
are expressed through variation of the reflection and absorption of light. This method is called
the "Subtractive Process." When all of these three colors are mixed, the result is no reflecting
light, producing black (K). The Subtractive Process is used to generate colors for all the color
prints such as posters and magazines.
Additive Process
Red (R)
Y
White
Green
C
(G)
Cyan (C) = Green (G) + Blue (B)
Magenta (M) = Red (R) + Blue (B)
Yellow (Y) = Red (R) + Green (G)
White (W) = Red (R) + Green (G) + Blue (B)
Adjusting Colors
Relations of RGB and CMYK
M
Blue
(B)
Red (R) = Yellow (Y) + Magenta (M)
Green (G) = Yellow (Y) + Cyan (C)
Blue (B) = Cyan (C) + Magenta (M)
Black (K) = Cyan (C) + Magenta (M) + Yellow (Y)
Subtractive Process
Yellow
(Y)
G R
Black
(K)
Cyan Magenta
B
(C) (M)
Advanced
Mode
Color Balance
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