Install font to Zebra Printer iMZ320 from iOS application



I'm developing an app for iOS that is having print functionality. We have used the iOS zebra sdk to fulfillment the requirement.We have few custom fonts (.fon and ttf files)which needs to be installed in the printer which we could not do manually. Is there a way to identify which all fonts are currently available in the system? If font is not available mobile app has to install the same to the printer.

Can anyone suggest/guide me to resolve this problem?