There is a strange problem that some items are missing on the label from time to time. The possibility is about 0.1%. My 100XiIII is on parrallel port, I use ZPL language, code by Visual C++ 2008. The missing items are mixture of alphabet and number. I have tried to change the cable, printer, PC, but the the same problem occured still some time.
Do you know what's the root cause?