Closure member for an ink passage in an ink jet printhead

Details Closure member for an ink passage in an ink jet printhead Closure member for an ink passage in an ink jet printhead

2007-10-23

2007-10-23

Do, An H. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S065000

Reexamination Certificate

active

10882775

ABSTRACT:
A closure member for each of the plurality of ink passages in an ink jet printhead chip that is the product of an integrated circuit fabrication technique includes a wafer substrate having a front surface and a rear surface. A plurality of ink passages are defined through the wafer substrate, so that each ink passage defines an inlet at a rear surface of the wafer substrate and an outlet at a front surface of the wafer substrate. Each ink passage is in fluid communication with an ink supply at the rear surface of the wafer substrate. A plurality of actuators are positioned on the rear surface of the wafer substrate, each being operatively arranged to facilitate the displacement of a corresponding closure member between open and closed position.

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