Driving method of liquid ejecting head and liquid ejecting apparatus
AssigneeSeiko Epson Corporation
InventorTakanori Aimono
Life of this patent
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Abstract
A liquid ejecting head includes a nozzle, first and second pressure chambers communicating with the nozzle, a first driving element configured to change a pressure in the first pressure chamber, and a second driving element configured to change a pressure in the second pressure chamber. A first flow path length of a flow path from the first pressure chamber to the nozzle is shorter than a second flow path length of a flow path from the second pressure chamber to the nozzle. In a driving method of a liquid ejecting head, at least the first and second driving elements are driven to eject a liquid from the nozzle, and a driving timing of the second driving element is earlier than a driving timing of the first driving element.
Claims20
A driving method of a liquid ejecting head including a nozzle configured to ejecting a liquid, first and second pressure chambers communicating with the nozzle, a first driving element configured to change a pressure in the first pressure chamber, and a second driving element configured to change a pressure in the second pressure chamber, in which a first flow path length of a flow path from the first pressure chamber to the nozzle is shorter than a second flow path length of a flow path from the second pressure chamber to the nozzle, and at least the first and second driving elements are driven to eject a liquid from the nozzle, the method wherein
- a driving timing of the second driving element is earlier than a driving timing of the first driving element.
A driving method of a liquid ejecting head including a nozzle configured to eject a liquid, first and second pressure chambers communicating with the nozzle, a first driving element configured to change a pressure in the first pressure chamber, and a second driving element configured to change a pressure in the second pressure chamber, in which a first flow path length of a flow path from the first pressure chamber to the nozzle is shorter than a second flow path length of a flow path from the second pressure chamber to the nozzle, and at least the first and second driving elements are driven to eject a liquid from the nozzle, the method wherein
- a magnitude of a pressure change of a liquid in the second pressure chamber caused by driving the second driving element is greater than a magnitude of a pressure change of a liquid in the first pressure chamber caused by driving the first driving element.
A liquid ejecting apparatus comprising:
- a liquid ejecting head;
- and
- a control section that controls an ejection operation of the liquid ejecting head, wherein
- in the liquid ejecting head,
- a nozzle for ejecting a liquid, first and second pressure chambers communicating with the nozzle, a first driving element that changes a pressure in the first pressure chamber, and a second driving element that changes a pressure in the second pressure chamber are provided, and
- a first flow path length of a flow path from the first pressure chamber to the nozzle is shorter than a second flow path length of a flow path from the second pressure chamber to the nozzle, and
- in the control section,
- at least the first and second driving elements are driven to eject a liquid from the nozzle, and
- a driving timing of the second driving element is earlier than a driving timing of the first driving element, or a magnitude of a pressure change of a liquid in the second pressure chamber caused by driving the second driving element is greater than a magnitude of a pressure change of a liquid in the first pressure chamber caused by driving the first driving element.
Dependencies are inferred from the claim text.