TOP > Adjusting the Product > Flow of Printing Operations > Operations in Linerless Mode (CL4NX Only) > Linerless Mode, Backfeed Before Printing, and with Pulse Input (Head Check Enabled) (CL4NX Only) Linerless Mode, Backfeed Before Printing, and with Pulse Input (Head Check Enabled) (CL4NX Only) Operation • The figure above shows the reference position when the I-mark sensor is used. Timing Chart *1 Keep the PRIN (print start) signal to "Low" until the PREND (print end) signal is outputted. Back to top