QMS 1060, User Manual

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About Gamma
Correction
QMS 1060 Print System Reference 5-4
Halftone Types
Your printer provides two different types of halftones—basic and
advanced. These two options allow you to customize the smoothness
of the printed image according to the number of grayscales it uses.
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Basic—
Regular dot placement at 53 lpi for 300x300 resolution or 71 dpi
for 600x600 resolution.
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Advanced—Variable dot placement according to the grayscale
within the image. Generally, this option provides smoother transi-
tions between grayscales within the image.
» Note:
When the advanced halftone type is chosen, gamma
correction has no effect on the image.
Screen Frequency
Screen frequency is the number of lines of dots that compose each
inch of a halftone screen. The screen frequency of a halftone deter-
mines the number of spots used to represent gray levels in a given
area. A 71 lines per inch (lpi) screen frequency has 71 lines of dots
for each inch of the halftone screen.