Printhead with columns extending across chamber inlet

Details Printhead with columns extending across chamber inlet Printhead with columns extending across chamber inlet

2011-03-29

2011-03-29

Do, An H (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S054000

Reexamination Certificate

active

07914119

ABSTRACT:
An inkjet printhead for a printer that prints via an array of ink ejection devices. Each ink ejection device has a chamber for holding a quantity of ink. The chamber is partially defined by at least one sidewall and has an inlet in fluid communication with the chamber. The inlet defines a flow path into the chamber and has a series of columns extending across the flow path. The series of chambers form a barrier structure that creates a flow constriction that traps contaminants in the ink flow.

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