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US 2009/0021566 A1Published application
Liquid Consumption Status Detecting Method, Liquid Container, and Ink Cartridge
AssigneeSeiko Epson Corporation
InventorsMinoru USUI, Kenji Tsukada, Munehide Kanaya, Noboru Tamura
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Abstract
A method of detecting a consumption status of liquid contained in a liquid container, comprising steps of: preparing a detection device having a piezoelectric element and attaching the detection device on a desired position of the liquid container so that at least a part of the detection device contacting the liquid; measuring a residual vibration of the detection device; and detecting the consumption status of the liquid contained in the liquid container on the basis of a result of the measurement of the residual vibration.
Claims11
1-18. (canceled)
An ink cartridge comprising:
- a first chamber;
- a second chamber;
- a capillary passage provided between the first chamber and the second chamber, wherein ink contained in the first chamber is supplied to the second chamber via the capillary passage;
- an ink supply port, wherein the ink is supplied to the ink supply port via the second chamber;
- and
- a check valve connected to the first chamber, the check valve maintaining a stable pressure inside the ink cartridge.
3 more elements
Dependencies are inferred from the claim text.