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AssigneeBenq Corporation
InventorsYi-Jing Leu, Hung-Sheng Hu, Tsung-Ping Hsu, Wei-Lin Chen, In-Yao Lee, Chung-Cheng Chou
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An apparatus for using the bubble as a virtual valve to eject ink comprises a chamber, orifice, and heaters. The chamber, having a top surface and a bottom surface, is connected to the ink reservoir by a manifold. Two heaters, connected in series to a common electrode, are located on the bottom surface of the chamber. One heater having higher resistance is positioned adjacent to the manifold, and the other heater having lower resistance is positioned away from the manifold. When an electrical pulse is applied to activate the heaters, the heater close to the manifold heats up first, and generates a first bubble to isolate the ink flow between the chamber and manifold, thereby reducing the effects of cross talk. Subsequently, the heater away from the manifold generates the second bubble to pressurize the ink in the chamber with the first bubble, and the ink is ejected through the orifice. Then, the first bubble collapses, and breaks the isolation between the manifold and the chamber. The ink in the manifold immediately refills to the chamber.
An fluid ejecting apparatus, wherein the apparatus is connected to a fluid reservoir having the fluid, the apparatus comprising:
A method for ejecting ink from an apparatus using bubble as virtual valve, wherein the apparatus connected to an ink reservoir having the ink comprises a chamber, the chamber has a top surface and a bottom surface, an orifice for ejecting the ink is formed on the top surface, a first heater adjacent to the manifold and a second heater away from the manifold are formed on the bottom surface, the method comprising the steps of:
The method according to claim 13, wherein after step (c), the first bubble collapses and breaks the isolation between the chamber and the manifold, and the ink refills the chamber.
A method for ejecting fluid from an apparatus using bubble as virtual valve, wherein the apparatus connected to a fluid reservoir having the fluid comprises a chamber, the chamber has a top surface and a bottom surface, an orifice for ejecting the fluid is formed on the top surface, a first bubble generator adjacent to the manifold and a second bubble generator away from the manifold are formed on the bottom surface, the method comprising the steps of:
Dependencies are inferred from the claim text.