Konica Minolta bizhub PRESS C8000e - Manual (Page 97)

bizhub PRESS C8000 4-2
4.1 About Colors 4
4 Quality Adjustment
4.1 About Colors
4.1.1 RGB and CMYK Models
Have you ever wondered why the world surrounding us appears colored to our eyes? Light is electromagnetic
waves with wavelengths between about 380-780 nm, also called visible rays. The wavelengths of visible rays
can be separated into the rainbow colors violet, indigo, blue, green, yellow, orange, and red, from the shortest
wavelength in order. When all the wavelengths of the visible rays strike your eye at the same time, white color
is perceived. We see the objects in color because they reflect or transmit visible light of different wavelengths
or frequencies.
The colors separated from visible light are called primary colors. Primary colors cannot be produced from
other colors. These colors, however, can be combined to make up any other color (color mixture). The color
mixture provides two different types, three primary colors of light and three primary colors of pigment. The
three primary colors of light are called additive color mixture, and the more colors are added, the brighter it
will be. Mixing red (R), green (G), and blue (B) colored lights, various colors can be created. The three primary
colors of pigment are called subtractive color mixture, and the more colors are added, the darker it will be.
Various colors can be created by mixing cyan (C), magenta (M), and yellow (Y) pigments (such as ink or toner),
however, black (K) is actually used as the fourth color in addition to the three primary pigments.
[1]: White light
[2]: Slit
[3]: Prism
[4]: Visible ray
[5]: Electromagnetic wave
[6]: Light
[7]: Reflection
[8]: Color