Inkjet printhead with compensating member

Details Inkjet printhead with compensating member Inkjet printhead with compensating member

2005-07-19

2008-10-21

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

C347S071000, C347S093000

Reexamination Certificate

active

07438403

ABSTRACT:
An inkjet printhead includes: a cavity unit having aligned nozzles, pressure chambers correspondingly aligned, and a common-chamber member having a common chamber connected, at an introduction place, to an ink source to receive and distribute ink to the pressure chambers, and extending along the pressure chambers row to overlap each pressure chamber when seen in the superposition direction, and a cross-sectional area of the common chamber perpendicular to its longitudinal direction gradually decreases in a direction away from the introduction place, at a portion remote from the introduction place; an actuator on the cavity unit to pressurize the distributed ink to eject ink droplets from the nozzles; and a compensating member having a rigidity lower than that of the common-chamber member, and being disposed in contact with the ink, at the remote portion so that a supporting rigidity of the common-chamber member is substantially uniform along the pressure chambers row.

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