Patent ID: 8534810

Claim:
A liquid discharge head unit comprising: a liquid container tank configured to store a liquid; and a head configured to receive the liquid from the liquid container tank to discharge liquid droplets therefrom, the head and the liquid container tank being integrally formed, wherein the head includes a common channel configured to supply the liquid to a plurality of liquid chambers communicating with nozzles configured to discharge the liquid droplets, and the common channel includes a supply port configured to introduce the liquid from outside, and a discharge port configured to discharge the introduced liquid outside, and wherein the liquid container tank includes a container configured to contain the liquid to be supplied to the head and including an upstream chamber and a downstream chamber separated via a filtering member, a supply path configured to supply the liquid from the downstream chamber of the container to the supply port of the head, a discharge path configured to discharge the liquid discharged from the discharge port of the head, a first communication path via which the downstream chamber communicates with the discharge path, and a second communication path via which the upstream chamber communicates with the discharge path, wherein a fluid resistance of the second communication path is higher than a fluid resistance of the first communication path.