We recommend to print on each sheet only once. The heat from the printing process causes the adhesive to soften. The adhesive could ooze and adhere to the inner workings of your printer causing the labels to jam or peel off if done too many times. You are welcome to visit the link below to request samples for testing on your printer model. If you do run the sheet through a second time, I would advise that you use the manual feed tray. This is a more direct paper path and may reduce the chances of a printer jam. https://www.onlinelabels.com/samples