I need to print a huge quantity of tickets. Downloading to a pdf a get a memory error in the server, so I guess I need to use ZPL file. What is the right method to print barcode label from the product template window? If a download the ZPL file and I print this file to a ticket printer, only plain text is printer. The printer does not understand the ZPL commands in the file. May a should buy other printer? I have a Bixolon SRP-77OII printer. May this printer is not compatible with ZPL file commands?

Thanks in advance.