Pagewidth printhead having symmetrically actuated ink...

Details Pagewidth printhead having symmetrically actuated ink... Pagewidth printhead having symmetrically actuated ink...

2006-01-31

2006-01-31

Nguyen, Thinh H. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S059000

Reexamination Certificate

active

06991317

ABSTRACT:
A pagewidth printhead is provides which comprises a plurality of printhead integrated circuits. Each integrated circuit includes a substrate that incorporates drive circuitry and a plurality of nozzle arrangements positioned on the substrate for ejecting ink onto media. Each nozzle arrangement includes a static structure extending from the substrate and an active structure defining an ink ejection port which form a nozzle chamber. The active structure is displaceable relative to the static structure towards and away from the substrate respectively to reduce and increase the nozzle chamber volume, thereby ejecting ink in the nozzle chamber from the port. At least two actuators are connected to the drive circuitry and are operatively arranged to displace the active structure on receipt of an actuating electrical signal from the drive circuitry. The actuators are configured and connected to the active structure to impart substantially rectilinear movement thereto.

REFERENCES:
patent: 6364453 (2002-04-01), Silverbrook
patent: 6425651 (2002-07-01), Silverbrook
patent: 6536874 (2003-03-01), Silverbrook
patent: 6857728 (2005-02-01), Silverbrook
patent: 6857730 (2005-02-01), Silverbrook
patent: WO 00/23279 (2000-04-01), None

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