Xerox DocuColor 2060 - Manual (Page 39)

A B O U T C O L O R P R I N T I N G
D O C U C O L O R 2 0 6 0 / 2 0 4 5 O P E R A T O R M A N U A L
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Halftone Dots
Halftone dots are combinations of spots that create a printed dot. The dots
shown here demonstrate different print resolutions. The illustration on the left
contains 25 possible printer dot cells, which can create different gray values. The
illustration on the right contains 256 printer dot cells, which allows for a greater
range of grays. To print a visually convincing halftone image, you need at least
150 shades of gray.
Halftone Dot Shapes
Because toner reacts differently with different paper surfaces, the
characteristics of your paper generally determine the screen ruling you should
use (for example, dry ink/toner tends to spread on rough, absorbent grades of
paper). Different dot shapes can enhance and improve output quality.
Solid Background Printing
Image quality is affected by the capabilities of your output device and the type of
paper, or media, you are using. Keep in mind the following regarding the
DocuColor 2060/2045:
• The maximum dry ink/toner coverage is 270 percent.
• The maximum color depth is 256 levels per color.
• The maximum color resolution is 600 dpi.
Media To obtain sharp and uniform prints, paper stocks should be smooth and be
composed of uniformly distributed fibers. Paper formation is determined by the
uniformity of paper fiber distribution. In color printing, paper formation influences
the tendency to mottle, produce uneven spotty toner coverage, and in solid
backgrounds it determines the sharpness of the color and its saturation.
Xerox media have been designed with evenly distributed fibers in its structure to
yield crisp and mottle-free prints.
Paper quality can vary from one side to another. Good quality paper reduces
these differences. Many suppliers use arrows on the paper ream label to indicate
the preferred side for imaging.