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US 9,789,687 B2Granted
Ink jet head having grounded protection plate on ejection face of nozzle plate and liquid jet recording apparatus incorporating same
AssigneeSii Printek Inc.
InventorAtsushi Kozuki
Life of this patent
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Abstract
An exposure portion which exposes a protection plate is formed on a back face of a nozzle plate at a part of a position other than an actuator joining face of the nozzle plate.
Claims5
An ink head comprising:
- a nozzle plate having an ejection face and a back face opposite one another, and a nozzle array comprised of a plurality of nozzle holes;
- an actuator plate including a plurality of channels filled with ink and communicating with respective nozzle holes;
- a support plate that supports the actuator plate;
- and
- a protection plate disposed on the ejection face of the nozzle plate from which the ink is ejected, the protection plate including through holes formed at positions corresponding to respective nozzle holes and communicating with the nozzle holes, wherein
- the back face of the nozzle plate has an exposure portion configured to expose the protection plate at a position other than a joining face of the nozzle plate that joins the nozzle plate with the actuator plate, and the protection plate is electrically connected to the support plate through the exposure portion of the nozzle plate.
3 more elements
Dependencies are inferred from the claim text.