--kiosk-printing google chrome sometimes print and sometimes not

hi im using webapp as poss everything working so good .. im using --kiosk-printing to automatic print the receipt but sometimes it print and sometimes not like its print blank page instead of the actual page i want ..
how can i set delay on --kiosk-printing till page fully load on print preview or any anther solution .. the problem happened when i print like 1000 receipt per day .. and its happened like 10 to 20 times .. ive changed the printer and the wire and the pc but still get the problem in printing in webapp without hitting enter ..