Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-12-12
2006-12-12
Stephens, Juanita D. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S056000
Reexamination Certificate
active
07147304
ABSTRACT:
A pagewidth inkjet printhead assembly includes an elongate substrate that defines a plurality of ink inlet channels. A drive and control circuitry layer is positioned on the substrate. A plurality of nozzle chamber structures is arranged on the substrate to define a number of longitudinally extending sets of nozzle chamber structures. Each set has a series of adjacent pairs of nozzle chamber structures. Each nozzle chamber structure defines a nozzle chamber in fluid communication with a respective ink inlet channel and an ink ejection port in fluid communication with the nozzle chamber. A plurality of elongate micro-electromechanical actuators is fast at one end to the substrate to receive electrical drive signals from the drive and control circuitry layer. A plurality of ink ejecting members is positioned in respective nozzle chambers. Each ink ejecting member is fast with a respective opposite end of each micro-electromechanical actuators to be displaced relative to the substrate on receipt of a drive signal by the associated actuator, thereby ejecting ink from the ink ejection port.
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Silverbrook Research Pty Ltd
Stephens Juanita D.
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