The IF9000 interface is used to control the LTP9247 / LTP9347 / CAP9247 / CAP9347 thermal mechanisms from Seiko Instruments. It has the function of operating the cutter and automatic loading of paper.

The interface supports the printing of 40 standard characters; 80 condensed characters, printing of 20 double-width characters, bolded and overwritten characters as well as printing of full graphics.