LaserWriter 8.5.1: Can‘t Print To Server Using LPR From Non-PowerPC

When printing from non-PowerPC based computer via LPR using LaserWriter 8.5.1, I can print directly to my printer via TCP/IP. However, if I print to a print server (lpd) via LPR, it does not work. Usually, I get the message, "Printer not found." However, if I print from a PowerPC-based computer to the same server, the jobs go through.
This issue is resolved in LaserWriter 8.6. LaserWriter 8.6 is available for download from Apple Software Updates.

Most, if not all, printers will not be affected by this issue.

These articles can help you locate the software update mentioned here:
Published Date: Feb 18, 2012