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US 2009/0213183 A1Published application
Printhead Having Low Mass Bubble Forming Heaters
AssigneeSilverbrook Research Pty Ltd
InventorKia Silverbrook
Life of this patent
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Abstract
A printhead is provided having a plurality of chambers on a substrate, each chamber having a nozzle, a heater arranged in each chamber so as to heat fluid within the chamber to form a gas bubble therein and thereby cause ejection of a drop from the corresponding nozzle, and a plurality of passages formed in the substrate so that each passage supplies the fluid to an associated one of the chambers. Each heater includes solid material and has a mass of less than 10 nanograms of the solid material, which is configured to be heated to cause formation of the gas bubble.
Claims10
A printhead comprising:
- a plurality of chambers on a substrate, each chamber having a nozzle;
- a heater arranged in each chamber so as to heat fluid within the chamber to form a gas bubble therein and thereby cause ejection of a drop from the corresponding nozzle;
- and
- a plurality of passages formed in the substrate so that each passage supplies the fluid to an associated one of the chambers,
- wherein each heater includes solid material and has a mass of less than 10 nanograms of the solid material, the solid material being configured to be heated to cause formation of the gas bubble.
2 more elements
Dependencies are inferred from the claim text.