Xerox Phaser 340 User Guide

Tektronix halftone screens are designed for Tektronix printers, and improve 
print quality over application-set halftone screens.  The Setscreen Off 
(SCRENOFF.PS) utility file redefines some PostScript operators, such as the 
setscreen, setcolorscreen and sethalftone.  When downloaded to the printer, this 
file prevents applications from overriding the Tektronix proprietary 
halftone screens.

Use the following utility files depending on your computer type:         

Use the installer application to install the utility files from either 
the Phaser 340 CD-ROM or the Printer Software for Macintosh 
diskette; refer to page 2-2 for instructions.

Select the appropriate printer in the Chooser.  

Locate the LaserWriter Utility in the PhaserTools folder on your hard 
disk, and double-click its icon to start the application.  

Choose Download PostScript File from the Utilities menu.  

Select the Setscreen Patch file from the list, then click Open.  (This 
file was installed in the Phaser 340 Utilities folder inside the 
PhaserTools folder.) 

Setscreen Patch and
LaserWriter Utility