Ink-jet printhead

Details Ink-jet printhead Ink-jet printhead

2006-02-28

2006-02-28

Meier, Stephen (Department: 2853)

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

C347S070000, C347S071000, C347S072000

Reexamination Certificate

active

07004576

ABSTRACT:
An ink-jet printhead includes a cavity unit and an actuator stacked together. The cavity unit is provided with a row of nozzle orifices and a row of pressure chambers communicating with the respective nozzle orifices. The actuator has a plurality of active portions for selectively actuating the respective pressure chambers to eject ink through the respective orifices. The cavity unit is a stack of plates including a cavity plate formed with the pressure chambers, a manifold plate formed with a manifold chamber and an intervenient plate interposed between the cavity plate and the manifold plate. The manifold chamber supplies ink from an external ink supply source to each of the pressure chambers. The intervenient plate is formed with a filter portion which filters ink provided from the external ink supplying source to the manifold chamber. The intervenient plate is formed with a damper wall facing the manifold chamber. The damper wall has a partial thickness of the intervenient plate.

REFERENCES:
patent: 5489930 (1996-02-01), Anderson
patent: 6575565 (2003-06-01), Isono et al.
patent: 2002/0180827 (2002-12-01), Hirota
patent: A 9-314836 (1997-12-01), None
patent: A 2001-162796 (2001-06-01), None
patent: A 2002-355962 (2002-12-01), None

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