I assume you are printing and Mag Encoding on the same side of card with your P330i (reverse Mag encoding)
The great news is both ZXP Series 3 and the ZXP Series 7 Single Side printers do support this capability (though the proper use of the Printer SDK as well as printing via the Windows Driver)... If you are using the Series 3 or 7 try selecting print front image on back in the Driver Preferences to see if this addresses your issue.
Thanks for your response.
I am printing content on the front side of the card and encoding magnetic stripe track data in the back of the card.
I use the method called ZBRPRNSetEncodingDir provided by Zebra printer SDK. It takes one of the parameter for setting the direction.
I am trying to evaluate if new ZXP series printers has this capability for encoding direction.
I use the following 3 dlls from SDK for P330i model.