Choosing a print encoding method

By default, the printer driver transfers binary information to printers; however, you can choose to transfer image data using JPEG or ASCII encoding.

JPEG-encoded files are smaller than binary files, and therefore require less time to print; however, using JPEG encoding decreases the image quality. Only PostScript Level 2 (or higher) printers support JPEG encoding; sending a JPEG-encoded file to a PostScript Level 1 output device may result in PostScript language errors.

Some print spooler programs, computer networks, and third-party printer drivers don't support files that are binary or JPEG-encoded, and some PostScript output devices accept binary and JPEG-encoded image data only through their AppleTalk and Ethernet ports, not their parallel or serial ports. In these situations, you can select the ASCII encoding method. However, ASCII files contain about twice as many characters and require about twice as much time to transfer as binary files. (See Photoshop EPS format.)

To change the encoding method:

1 Choose File > Print Preview, or click the Print Preview button in the shortcuts bar.

2 Select an option from the Encoding menu.

Printing > Choosing a print encoding method