Liquid Ejection Device

摘要

An ink ejection device includes a head section having a plurality of nozzles and ejecting a plurality of types of inks through the nozzles, and an ink supply section supplying the plurality of types of inks to the head section. The head section has a plurality of supply ports which are arranged in a scanning direction and to which the plurality of types of inks are supplied. The ink supply section includes a plurality of ink chambers which respectively contain the plurality of types of inks and are disposed to overlap one another in the up-down direction, a plurality of connection passages connecting the plurality of supply ports to the plurality of ink chambers containing the inks to be supplied to the supply ports, and a plurality of air discharge passages respectively connected to the plurality of ink chambers.

主权项

1. A liquid ejection device, comprising:
a liquid ejection head including a plurality of nozzles on a surface thereof and being configured to eject a plurality of types of liquids, each of the nozzles being configured to eject one type of liquid among the plurality of types of liquids; and a liquid supply tank configured to supply the plurality of types of liquids to the liquid ejection head, wherein the liquid ejection head includes a plurality of supply ports which are arranged along a first direction and to each of which one type of liquid among the plurality of types of liquids is supplied, the plurality of supply ports including a first supply port to which a first liquid among the plurality of types of liquids is supplied and two second supply ports to which a second liquid among the plurality of types of liquids is supplied, and the two second supply ports are disposed on both sides of the first supply port along the first direction, and the liquid supply tank includes:
a plurality of liquid chambers, each of which being configured to contain each type of liquid; anda plurality of connection passages connecting the plurality of supply ports of the liquid ejection head to the plurality of liquid chambers respectively configured to contain the plurality of types of liquids to be supplied to the plurality of supply ports, and the plurality of liquid chambers include a first liquid chamber configured to contain the first liquid and a second liquid chamber configured to contain the second liquid, and the connection passages include a first connection passage connecting the first supply port of the liquid ejection head to the first liquid chamber, and two second connection passages connecting the two second supply ports of the liquid ejection head to the second liquid chamber, and the two second connection passages are disposed on both sides of the first liquid chamber along the first direction, the second liquid chamber overlaps the first liquid chamber in a direction perpendicular to the surface and crossing the first direction, and is disposed farther away from the liquid ejection head than the first liquid chamber in the direction perpendicular to the surface.