Choosing the Best Halftone Setting

The Xerox Nuvera version of the system supports a variety of halftones when printing. The available selections depend on the Page Description Language (PDL) being submitted.

To select a Halftone

  1. Open a job properties window.
  2. Select the Image Quality tab.
  3. Select a Halftone setting.
Note

NOTE: For print jobs, the Copier / Printer configuration always uses the default 125 lpi 53 degree halftone screen.
Note

NOTE: For print jobs, the Digital Production configuration at 1200 x 1200 dpi uses the default 125 lpi 53 degree halftone screen representing 256 levels of gray.

The default halftone screen can be selected for each print queue. The default will be used if a PostScript, PDF, or TIFF job does not contain a halftone command. This will be the common case because the print drivers and job submission tool do not send a halftone command by default.

Note

NOTE: When reprinting a saved job, the system does NOT permit the Halftone Screen value to be changed, since saved jobs will have already had a halftone applied.

Often the selection of a different frequency will change the resulting Moiré texture to one which is more acceptable, but can not totally eliminate Moiré. For more information, see Removing Moiré Patterns.

 

Xerox Nuvera Digital Production System Screen Frequency Demo

The Xerox Nuvera Digital Production System's rich variety of screen frequencies, which include 85, 106, 125 and 156 lpi, provide the flexibility required for a wide variety of applications.

The demo files are located in the default save directory on the Xerox Nuvera Digital Production System. Open and print the .tiff or .xpf file in the appropriate stock size. The job ticket contains all the necessary job settings.  The job prints on letter or A4 stock.

The file names are:

screenfregdemo_a4.tif

screenfregdemo_a4.xpf

screenfregdemo_ltr.tif

screenfregdemo_ltr.xpf