Patent ID: 7971972
Filing Date: 2011-07-05
Classification: B41J

Abstract:
1. A nozzle arrangement for a pagewidth inkjet printhead assembly, the nozzle arrangement comprising: a substrate defining an ink supply channel; an ink chamber in fluid communication with the ink supply channel, the ink chamber defining an ink ejection port around which an ink spreading prevention rim is provided; a thermal actuator mechanism arranged in the substrate and configured to eject ink from the chamber via the ejection port, the mechanism having a thermal actuator arm adapted to deflect as a result of relative thermal expansion; and control logic architecture provided on the substrate for controlling the thermal actuator arm, the architecture having a plurality of successive shift registers, a transfer register for receiving data output from a last shift register, and a firing control gate, the firing control gate having an enabling input and a gate data input for receiving an output from the transfer register, the gate operatively driving the thermal actuator according to the enabling and gate data inputs, wherein the shift register and transfer register are provided as fully static CMOS.