We have a couple P4Ts that have begun acting up. We use ribbon and what has been happening recently is that when a print job is sent the label feeds but there is nothing printed on the label. I have been playing with one of the printers and noticed that after issuing ~JC^XA^JUS^XZ and restarting the printer it will start printing again for a couple labels and then quit, feeding a blank label... as if it was trying to print direct.
"firmwareVersion" : "SHCPT11z48 ",
"firmwareDate" : "02/26/13"
Do you guys have any ideas what could be wrong?