Xerox DocuColor 250 Online Help Manual page 77

P r od u c t Na me Bo o k N am e
NOTE: In the following list, you will see the halftone options
described in numerical terms. The numbers refer to the screen
frequencies of the various dot screen and line screen patterns
described. It is important to note that a higher-valued screen
frequency does not necessarily produce a better result. Also, the
novice user is encouraged to accept the default setting, as this
setting is designed to produce the best general results of the
available settings.
These options include:
• System Specified: provides a halftone screen that is
optimized for your printer. For the DC2045/2060, the default or
system specified halftone screen is a 200 dot screen.
• 200 dot (Primary): this mid frequency dot screen is one of the
recommended settings for the DC 2045/2060.
• 150 dot: a low frequency dot screen halftone
• 200 line: as mentioned above, this mid frequency line screen
halftone is the recommended and default setting for this
printer.
• 300 line: this upper mid frequency line screen halftone may be
useful for certain types of images.
• 600 line: this high frequency line screen halftone is useful only
for specific text types.
These options will determine how the printer will handle halftones.
More Information...
The general differences between the various kinds of halftone
screens are as follows:
– Dot Screen Halftone: Dot screening provides a
rosette type pattern to the screen, which is a commonly
desired screen pattern. The dot screen halftone makes
seeing artifacts and patterns in a large halftone much
less likely. However, when two straight line areas meet
one another, slight jags may be visible. A dot screen is
particularly useful for large gradients and other shading
areas likely to produce visible lines from a line screen
pattern.
– Line Screen Halftone: A line screen provides a linear
dot pattern. The line screen halftone makes seeing
artifacts and patterns in a large halftone more likely
compared to a dot screen. However, when two straight
lines adjoining halftone areas meet, then the linear
nature of the screen avoids the jagged border areas
that are more often found in a dot screen pattern.
– Stochastic Screens: Stochastic screening uses
randomly placed dots instead of the traditional halftone
dots aligned along designated screen angles. The
concept of stochastic screening is that dots placed
randomly will not cause moire patterns. However,
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