Inkjet printer
AssigneeRiso Kagaku Corporation
InventorEiji Hori
Life of this patent
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Abstract
A controller of an inkjet printer performs control to: during ink delivery in a first ink tank pair, as a preparation of ink delivery in a second ink tank pair, generate positive pressure and negative pressure respectively in third and fourth ink tanks of the second ink tank pair and supply ink to the second ink tank pair; and upon completion of the ink delivery in the first ink tank pair, perform printing by ejecting the ink from an inkjet head while delivering the ink between the third and fourth ink tanks of the second ink tank pair prepared for the ink delivery via an ink flow passage and the inkjet head.
Claims10
An inkjet printer comprising:
- an inkjet head configured to eject ink;
- a first ink tank pair being a pair of a first ink tank and a second ink tank each configured to store the ink;
- a second ink tank pair being a pair of a third ink tank and a fourth ink tank each configured to store the ink;
- an ink flow passage connecting the inkjet head with the first to fourth ink tanks and not including a pump through which the ink flows;
- a pressure generator configured to selectively generate positive pressure and negative pressure in the first to fourth ink tanks;
- an ink supplier configured to supply the ink to the first to fourth ink tanks;
- an ink supply flow passage connecting the ink supplier with the first to fourth ink tanks and not including a pump through which ink flows, and
- a controller configured to control the inkjet head, the pressure generator, and the ink supplier,
- wherein the controller is configured to:
- drive the pressure generator to generate positive pressure and negative pressure for ink delivery respectively in the first ink tank and the second ink tank of the first ink tank pair and perform printing by ejecting the ink from the inkjet head while delivering the ink between the first ink tank and the second ink tank of the first ink tank pair via the ink flow passage and the inkjet head;
- during the ink delivery in the first ink tank pair, as a preparation for ink delivery in the second ink tank pair, drive the pressure generator to generate positive pressure and negative pressure respectively in the third ink tank and the fourth ink tank of the second ink tank pair and drive the ink supplier to supply the ink to the second ink tank pair;
- and
- upon completion of the ink delivery in the first ink tank pair, perform printing by ejecting the ink from the inkjet head while delivering the ink between the third ink tank and the fourth ink tank of the second ink tank pair prepared for the ink delivery via the ink flow passage and the inkjet head.
Dependencies are inferred from the claim text.