Patent ID: 7641315
Filing Date: 2010-01-05
Classification: B41J,B42D,B82Y,G03B,G06F,G06K,G06T,G07F,G09G,G11C,H01L,H04N,H05K,Y10T

Abstract:
1. A printhead for an inkjet printer, the printhead comprising a wafer assembly supporting rows of ink ejection nozzles, each nozzle comprising: a nozzle structure defining a nozzle chamber in fluid communication with an ink ejection port; and a cantilevered thermal actuator which terminates in a free end over an ink supply channel, the thermal actuator comprising a serpentine heater layer connected to a CMOS drive circuitry layer of the wafer assembly, the CMOS drive circuitry layer configured to actuate the thermal actuator and reciprocate the actuator to eject ink in the nozzle chamber out through the ink ejection port.