LIQUID SUPPLY DEVICE, INK JET RECORDING DEVICE, AND LIQUID SUPPLY METHOD

摘要

There is provided an ink jet device capable of adjusting supply pressure of liquid to a recording head in which a fluctuation in the supply pressure of liquid caused by liquid consumption on a recording head is repressed in a simple constitution. The ink jet device includes a main tank 2, a sub tank 6 for receiving liquid from the main tank 2 and storing the liquid, and a supply unit for supplying the liquid stored in the sub tank 6 to the recording head 11, the supply unit adjusts a height of the sub tank, and the sub tank 6 has a ventilation opening 12.

主权项

1. A liquid supply device comprising:
a main tank for storing liquid to be discharged from a recording head; a supply pipe communicated with the main tank; a sub tank for receiving liquid from the main tank via the supply pipe according to a water head difference and storing the liquid; and a supply unit for supplying the liquid stored in the sub tank to the recording head, wherein the supply unit has a driving unit for adjusting a height of the sub tank in a vertical direction, the sub tank has a ventilation opening, and the supply pipe has a first opening section opened at a predetermined height lower than the ventilation opening in the sub tank in the vertical direction.