Ink-jet head, filter assembly used for manufacturing the...

Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means

Reexamination Certificate

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Details

C347S085000

Reexamination Certificate

active

07044591

ABSTRACT:
An ink-jet head comprises a passage unit with an ink passage formed therein and a branching passage unit, and is constructed by laminating the passage unit and the branching passage unit with each other. The ink passage extends from a common ink chamber for supplying ink to a pressure chamber toward a nozzle. The branching passage unit includes an ink branching passage for branching ink from an ink introduction port to ink outlet ports. The outlet ports leads out ink into the passage unit. Inlet ports for introducing ink into the common ink chamber are formed on a surface of the passage unit. Ink outlet ports in the branching passage unit are disposed so as to face the inlet ports. Filters for removing foreign matters mixed in ink are formed in the ink branching passage within the branching passage unit.

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