Liquid ejecting apparatus
AssigneeSeiko Epson Corporation
InventorJunhua Zhang
Life of this patent
Estimating the term…
Abstract
A maintenance pulse is a pulsed waveform that includes an expansion element that causes a pressure chamber to expand, a contraction element that causes the pressure chamber that is expanded by the expansion element to contract, and a reexpansion element that causes the pressure chamber that is contracted by the contraction element to expand again, and satisfies the following condition (1) when a time from the beginning of the contraction element to the beginning of the reexpansion element is given the term T1, and a specific vibration period that is caused in the liquid inside the pressure chamber is given the term Tc. 1.2×Tc≦T1<1.5×Tc (1)
Claims4
A liquid ejecting apparatus comprising:
- a liquid ejecting head that has a pressure chamber, which is in communication with a nozzle, and a pressure generation unit that brings about a pressure fluctuation in a liquid inside the pressure chamber, and is capable of ejecting the liquid from the nozzle through actuation of the pressure generation unit;
- and
- a driving signal generation unit that causes a maintenance driving signal, which includes a maintenance pulse that causes the liquid to be ejected from the nozzle, to be generated during maintenance,
- wherein the maintenance pulse is a pulsed waveform that includes an expansion element that causes the pressure chamber to expand, a contraction element that causes a pressure chamber that is expanded by the expansion element to contract, and a reexpansion element that causes a pressure chamber that is contracted by the contraction element to expand again, and
- satisfies
- 1.2×Tc≦T1<1.5×Tc (1)
- when a time from a beginning of the contraction element to a beginning of the reexpansion element is given the term T1, and a specific vibration period that is caused in the liquid inside the pressure chamber is given the term Tc.
Dependencies are inferred from the claim text.