Xerox Phaser 540 产品宣传页

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

If you have not decompressed the Phaser 540 Utilities.sea archive 
file on the Macintosh Driver and Printer Utilities diskette, follow 
the instructions on page 2-11 to decompress this file.  

Select the appropriate printer in the 

Chooser.

Locate the LaserWriter Utility in the folder on your hard disk 
containing decompressed utility files.  

Double-click on the 

LaserWriter Utility icon.  

Select 

Download PostScript File from the Utilities menu.  

Select the Setscreen Patch file in the folder on your hard disk 
containing decompressed utility files and click 

Open.        

At the 

Save PostScript output as:

 prompt, you are asked 

to supply a file name for saving printer output.  Use the default 
name given in the edit box or type in a new name.  Then click 

Save 

to send the file to the printer.

If no output is returned by the printer, the LaserWriter Utility 
displays a dialog box.  Click 

OK in the dialog box. 

Setscreen Patch

SETSCRN.PS