QMS 1800409-001A, User Manual

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Screen frequency (also known as screen lines) is the number of
halftone cells per inch. The higher the frequency, the higher the
quality of the color print. Screen angles are the angles at which
halftone screens are placed in relation to one another to avoid
undesirable moiré patterns.
Although your application probably gives you the ability to
fine-tune halftone settings, we have provided several printer default
settings that we have found to optimize print quality for different
printing tasks at different resolutions:
Enhanced Halftone
This halftone setting, which is the factory default setting, gives the
best results for most jobs, providing fine detail, with no banding,
rosettes, or moirés. The enhanced halftone has an effective line
screen of up to 95 lpi (at 600 dpi) with 161 halftone gray levels,
which allows the printer to produce up to 4.2 million colors. Choose
this halftone setting in the following situations:
■ If your jobs contain a mixture of text, graphics, and/or
sampled images.
■ If you are using the Pantone POCE or Apple ColorSync
color management system, or if you are producing
PANTONE

* simulations.
■ For optimum color matching when using a printer-resident
Color Rendering Dictionary.
Chapter 7
O p t i m i z i n g C o l o r O u t p u t 7 - 7
* Pantone Inc.’s check-standard trademark for color reproduction and color reproduction materials.