Liquid ejecting apparatus and liquid ejecting head
AssigneeSeiko Epson Corporation
InventorsHaruki Kobayashi, Atsushi Muto
Life of this patent
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Abstract
A liquid ejecting apparatus includes a liquid ejecting head that has an ejection surface including a first nozzle row configured to eject a first ink and a second nozzle row configured to eject a second ink. The liquid ejecting head is configured to be held in a first posture in which the ejection surface is inclined with respect to a horizontal plane. The dynamic surface tension of the first ink is higher than the dynamic surface tension of the second ink. In the first posture, the first nozzle row is positioned above the second nozzle row with respect to a gravity direction.
Claims18
A liquid ejecting apparatus comprising:
- a liquid ejecting head that has an ejection surface including a first nozzle row configured to eject a first ink, a second nozzle row configured to eject a second ink, and a third nozzle configured to eject a third ink, wherein
- the liquid ejecting head is configured to be held in a first posture in which the ejection surface is inclined with respect to a horizontal plane,
- a dynamic surface tension of the first ink is higher than a dynamic surface tension of the second ink,
- a dynamic surface tension of the third ink is lower than the dynamic surface tension of the first ink and is higher than the dynamic surface tension of the second ink,
- in the first posture, the first nozzle row is positioned above the second nozzle row with respect to a gravity direction, and
- in the first posture, the third nozzle row is positioned below the first nozzle row and above the second nozzle row with respect to the gravity direction.
A liquid ejecting apparatus comprising:
- a liquid ejecting head that has an ejection surface including a first nozzle row configured to eject a first ink and a second nozzle row configured to eject a second ink,
- a first pressure adjusting portion that adjusts a pressure of the first ink to be supplied to the first nozzle row;
- and
- a second pressure adjusting portion that adjusts a pressure of the second ink to be supplied to the second nozzle row, wherein
- the liquid ejecting head is configured to be held in a first posture in which the ejection surface is inclined with respect to a horizontal plane,
- in the first posture, the first nozzle row is positioned above the second nozzle row with respect to a gravity direction,
- the first pressure adjusting portion and the second pressure adjusting portion are disposed at the same position with respect to the gravity direction, and
- a dynamic surface tension of the first ink is higher than a dynamic surface tension of the second ink.
A liquid ejecting apparatus comprising:
- a first liquid ejecting head that has a first ejection surface including a first nozzle configured to eject a first ink;
- and
- a second liquid ejecting head that has a second ejection surface including a second nozzle configured to eject a second ink, the second liquid ejecting head being different from the first liquid ejecting head, wherein
- a dynamic surface tension of the first ink is higher than a dynamic surface tension of the second ink,
- the first ejection surface is disposed such that an angle formed by an ejection direction of the first ink ejected from the first nozzle and a gravity direction is a first angle, and
- the second ejection surface is disposed such that an angle formed by an ejection direction of the second ink ejected from the second nozzle and the gravity direction is a second angle larger than the first angle.
Dependencies are inferred from the claim text.