Patent ID: 9211728
Filing Date: 2015-12-15
Classification: B41J

Abstract:
1. A method for heating a substrate in a printing device, the method comprising: positioning a radiant heater along a printing path of a printing device, the radiant heater including a plurality of emitters; measuring a voltage and a current supplied to each of the plurality of emitters; determining an electrical power supplied to each of the plurality of emitters using the measured voltage and current; determining whether the electrical power supplied to one of the plurality of emitters differs from the electrical power supplied to another of the plurality of emitters by more than a threshold amount; and if the electrical power supplied to one of the plurality of emitters differs from the electrical power supplied to another of the plurality of emitters by more than the threshold amount, adjusting the electrical power supplied to one of the plurality of emitters to reduce the electrical power difference between the plurality of emitters.