The mat may be curled. If the mat was curled or bowed such that the adhesive side of the mat bows up when resting on a table, roll the mat up into a cylinder with the adhesive side to the inside to reverse the curl. Hold the mat in this position for at least two minutes using rubber bands or some other suitable means of securing the mat. Unroll the mat and repeat the calibration process. For best performance, the mat should be flat before being fed through the machine. Open and close the ink cartridge access door at the back left corner of the machine. Allow the machine about 30 seconds to reset and then follow the on-screen instructions to feed the mat with a clean sheet of paper into the machine and click “GO."