Patent ID: 8038272

Claim:
A liquid-droplet jetting apparatus which jets droplets of a liquid comprising: a liquid supply source supplying the liquid; a liquid-droplet jetting head having a plurality of nozzles; and a liquid storage chamber storing the liquid supplied from the liquid supply source and including: a liquid inlet port through which the liquid supplied from the liquid supply source flows in; a liquid outlet port through which liquid flows out to the liquid-droplet jetting head; a pair of walls substantially in parallel to a flow direction of the liquid from the liquid inlet port toward the liquid outlet port and facing each other vertically with a distance therebetween; and a surrounding wall surrounding a circumference of a space between the pair of walls; wherein one wall of the pair of walls is a damper wall having flexibility; wherein the other wall of the pair of walls defines a main flow region and sub-flow regions, the main flow region in which the liquid flows from the liquid inlet port to the liquid outlet port and which extends substantially in parallel to the flow direction, and the sub-flow regions being sandwiched by the main flow region and the surrounding wall on both sides of the flow direction of the main flow region and being formed higher toward the one wall, of the pair of walls, than the main flow region; and wherein the sub-flow regions are extended, in an orthogonal direction substantially orthogonal to the flow direction, so that the sub-flow regions are continued to the surrounding wall.