Printhead with barrier at chamber inlet

Details Printhead with barrier at chamber inlet Printhead with barrier at chamber inlet

2007-10-28

2009-08-04

Do, An H (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S065000

Reexamination Certificate

active

07568788

ABSTRACT:
An inkjet printhead that has an array of ink ejection devices, each ink ejection device having a chamber for holding a quantity of ink, an inlet in fluid communication with the chamber, an actuator disposed in the chambers respectively, a nozzle aperture in fluid communication with each of the chambers respectively. The inlet defines a flow path into the chamber and has a barrier structure extending through the flow path. The barrier structure creates a flow constriction that traps contaminant in the ink flow.

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