Tektronix Phaser 350 manual Using the Tektronix halftone screens, Macintosh users

6Troubleshooting

Using the Tektronix halftone screens

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. By default, the printer prevents applications from overriding the Tektronix proprietary halftone screens. Use the following utility files, depending on your computer type, to control application-defined halftone screens in your prints.

Macintosh file name	PC file name
Setscreen On	SCRENON.PS
Setscreen Off and	SCRENOFF.PS
LaserWriter Utility

Macintosh users

1.Refer to “Using the Macintosh Installer” on page 2-53 for instructions on installing the utility files from the Phaser 350 printer’s CD-ROM.

2.Select the appropriate printer in the Chooser.

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

4.Choose Download PostScript File from the Utilities menu.

5.Select either the Setscreen On or the Setscreen Off file from the list, then click Open. (These files were installed in the Printer Utilities folder, inside the PhaserTools folder.)

6.At the prompt Save PostScript output as: you are asked for a file name for saving printer output. Use either the default name given in the edit box or type a new name. Click Save to send the file to the printer.

7.If no output is returned by the printer, the LaserWriter Utility displays a dialog box; click OK continue.

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