
6.2 2-D Computer Graphics
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papers. One reason that a basic knowledge of linescreens is important to multimedia
developers is that scanners can also detect these patterns. This sometimes results in
distortions in scans made of printed images.
CMYK Color
Color contone images are also printed with dots of ink, but in this case more
than two colors are used. In the common “four-color” printing process dots of
four different transparent inks are combined to reproduce the various colors of
the original. The colors used are cyan, magenta, yellow, and a key color, which
is usually black. This is so-called CMYK color (Figure 6.6). Very small ...