Patent ID: 6234609
Filing Date: 2001-05-22
Classification: B41J,B82Y,G06K,G11C,H04N

Abstract:
A nozzle arrangement for an ink jet printhead, the nozzle arrangement comprising:nozzle chamber walls that define a nozzle chamber, the nozzle chamber being interconnected to an ink supply and an ink ejection port defined in one of the nozzle chamber walls;an ejection paddle for ejection ink from said ink ejection port;a thermal actuator mechanism comprising materials having a high young's modulus attached to the ejection paddle for actuating the ejection paddle and causing ink to be ejected;wherein the thermal actuator and the ejection paddle are pivotally mounted with respect to one of the nozzle chamber walls and positioned so that pivotal movement of the thermal actuator away from the ink ejection port results in pivotal movement of the ejection paddle towards the ink ejection port causing ink to be ejected from the ejection port, with the extent of movement of the election paddle being greater than an extent of movement of the thermal actuator.