Inkjet head that improves flatness of ink ejection surface

Details Inkjet head that improves flatness of ink ejection surface Inkjet head that improves flatness of ink ejection surface

2004-12-22

2009-11-17

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S042000, C347S017000, C347S018000, C347S049000, C347S068000

Reexamination Certificate

active

07618118

ABSTRACT:
A channel unit has an ink ejection surface that includes nozzles, another surface, a common ink chamber, pressure chambers, and individual ink channels each fluidly connecting the common ink chamber with one nozzle via a corresponding pressure chamber. An actuator unit is fixed to the another surface. The actuator unit is deformable to selectively change the volumes of the plurality of pressure chambers. A reservoir unit has a first surface fixed to the another surface, a second surface extending in parallel with the ink ejection surface, and an ink reservoir. The actuator unit is interposed between the channel unit and the reservoir unit. A base plate has a flat planar surface. A fixing portion fixes the base plate to the reservoir unit at at least one position, allowing the flat planar surface of the base plate to be in close contact with the second surface of the reservoir unit.

REFERENCES:
patent: 6109727 (2000-08-01), Akahira et al.
patent: 6217158 (2001-04-01), Kanaya et al.
patent: 6505908 (2003-01-01), Akahira et al.
patent: 2002/0005879 (2002-01-01), Kitahara
patent: 2003/0156157 (2003-08-01), Suzuki et al.
patent: A 10-151748 (1998-06-01), None

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