Giving Priority to a Print Job (Interrupt Printing) 

This mode is used for pausing the job currently being processed and start printing the specified job on ahead. The paused print jobs are saved on the SD card in the printer and printed again after the print job that interrupted is completed.
Select [Interrupt Print] from [Output Method] in the printer driver, and then print.
NOTE
If a print job for interrupt printing has already being processed
You cannot give priority anymore to another print job.
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