MF Digital Teaс P55 SureThing Setup Guide - Manual (Page 19)

Loading Ribbons
4. Checking the Remaining Ribbon Amount
3 I n k R e m a i n When the P-55 is Ready as the LCD indicates,
press the
SELECT button as many times as
necessary for "Ink Remain" to appear on the LCD,
and then press the ENTER
button.
3 T R F 9 9 %
I N K 9 9 %
The re-transfer ribbon's remaining amount is
indicated on the upper line and the ink ribbon's
remaining amount on the lower line, expressed as a
percentage.
(The remaining ribbon amount shown on the LCD is not absolute but just a rough "barometer".)
*The P-55 displays the remaining ink level for the ink ribbon as “INK FF%” if no single print
operation is performed after the P-55 is turned on.
Once a print operation is performed, the display changes to a numerical value “INK nn%”
indicating an estimate of the remaining ink in the ribbon.