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US 5,966,153 AGranted
Ink jet printing device
AssigneeHitachi Koki Co., Ltd.
InventorsMasao Mitani, Kenji Yamada, Katsunori Kawasumi, Osamu Machida, Kazuo Shimizu
Life of this patent
Estimating the term…
Abstract
An ink jet printing device including an ink channel wall defining an ink chamber; a nozzle portion formed with a nozzle connecting the ink chamber with atmosphere; and a thermal heater formed to the ink channel wall adjacent to the nozzle portion, the thermal heater including a Ta--Si--O ternary alloy thin film resistor having a composition of 64% .ltoreq.Ta.ltoreq.85%, 5%.ltoreq.Si.ltoreq.26%, and 6%.ltoreq.O.ltoreq.15% and a nickel film conductor.
Claims6
An ink jet printing device comprising:
- an ink channel wall defining an ink chamber;
- a nozzle portion formed with a nozzle connecting the ink chamber with atmosphere;
- a thermal heater formed to the ink channel wall adjacent to the nozzle portion, the thermal heater including:
- a Ta--Si--O ternary alloy thin film resistor having a composition of 64%.ltoreq.Ta.ltoreq.85%, 5%.ltoreq.Si.ltoreq.26%, and 6%.ltoreq.O.ltoreq.15% in atomic percents;
- and
- a nickel film conductor,
- wherein the thermal heater is used with the thin film resistor in direct contact with ink to be ejected.
4 more elements
Dependencies are inferred from the claim text.