A thermal ink jet printhead includes a switched power supply for the intermediate voltage predriver sections. The power supply is switched by a MOSFET connected between an intermediate point of a voltage divider and ground. By switching the power supply, the predriver sections are turned off, unnecessary...http://www.google.fr/patents/US5371530?utm_source=gb-gplus-shareBrevet US5371530 - Thermal ink jet printhead having a switched stand-by mode
Thermal ink jet printhead having a switched stand-by mode