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US 2004/0070641 A1Published application
Liquid ejecting device
AssigneeFuji Photo Film Co., Ltd.
InventorHiroshi Inoue
Life of this patent
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Abstract
An ink jet printer has an ink jet printhead, which includes an ink chamber for containing ink. An array of plural ejection nozzles eject the ink from the ink chamber at an ejecting amount controlled individually from one another. A pressure sensor measures atmospheric pressure and inner pressure of the ink chamber. A system controller sets a pressure difference between the atmospheric pressure and the inner pressure at a predetermined value by adjustment. In one preferred embodiment, the predetermined value is a reference value for regularizing the ejecting amount.
Claims24
A liquid ejecting device comprising:
- a liquid ejecting head, including an array of plural ejection nozzles for ejecting liquid at an ejecting amount controlled individually from one another;
- a supply tank, loaded with said liquid, for supplying said liquid ejecting head with said liquid;
- at least one pressure sensor for measuring atmospheric pressure and inner pressure of said liquid ejecting head;
- and
- a controller for setting a pressure difference between said atmospheric pressure and said inner pressure at a predetermined value by adjustment.
2 more elements
Dependencies are inferred from the claim text.