Inkjet recording device

Abstract

The objective is to maintain a constant height relationship between the liquid level in the sub-tank and the nozzle surface of the inkjet head when the capacity is changed. [Solution] The inkjet recording device comprises an ink container 20 for storing ink, a sub-tank 40 for storing ink supplied from the ink container 20, an inkjet head 12 for ejecting ink supplied from the sub-tank 40, and a variable capacity means for changing the capacity of the sub-tank 40 by changing the cross-sectional area of ​​the cross section parallel to the liquid surface of the sub-tank 40.

Claims

1. An ink container for storing ink, A sub-tank for storing ink supplied from the aforementioned ink container, An inkjet head that ejects ink supplied from the sub-tank, An inkjet recording apparatus comprising a variable capacity means for changing the capacity of the sub-tank by changing the cross-sectional area of ​​a section parallel to the liquid surface of the sub-tank.

2. The aforementioned sub-tank is equipped with an air chamber whose cross-sectional area is variable and whose cross-section is parallel to the liquid surface. The inkjet recording apparatus according to claim 1, characterized in that the variable capacity means changes the capacity of the sub-tank by changing the cross-sectional area of ​​the air chamber.

3. Equipped with monitoring means to monitor ink usage, The inkjet recording apparatus according to claim 1 or 2, characterized in that the variable capacity means changes the capacity of the sub-tank according to the ink usage status monitored by the monitoring means.

4. The system includes a receiving means for receiving instructions indicating whether or not the variable capacity means needs to be operated, The inkjet recording apparatus according to claim 1, characterized in that the variable capacity means does not change the capacity of the sub-tank when the receiving means receives an instruction that the operation of the variable capacity means is unnecessary.

5. Equipped with a storage solution container for storing the storage solution, The inkjet recording apparatus according to claim 1, characterized in that the ink in the inkjet head can be replaced with a preservative by connecting the preservative container to the sub-tank instead of the ink container.

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