Patent ID: 8827427

Claim:
An ink-jet apparatus comprising: an ink supply channel configured to allow ink supplied from outside to flow therethrough; ink chamber groups that are provided on either side of the ink supply channel, the ink chamber groups each having two or more ink chambers, the ink chambers each having nozzles; an actuator provided in each of the ink chambers; and at least two ink discharging channels in parallel with a direction in which ink flows through the ink supply channel and configured to allow ink discharged from the ink chambers to flow, the ink supply channel being arranged between the two ink discharging channels, and an ink circulating device that circulates the ink flowing through the ink supply channel and the at least two ink discharging channels, wherein: each of the ink chamber groups has two or more ink chamber sequences arranged along the direction in which ink flows through the ink supply channel, and two or more nozzle sequences arranged along the direction in which ink flows through the ink supply channel; adjacent ink chambers communicate with one another; and wherein one of the ink chamber sequences closest to the ink supply channel is a first ink chamber sequence, one of the ink chamber sequences furthest away from the ink supply channel is an n-th ink chamber sequence, and the number of the ink chambers in the first ink chamber sequence is greater than the number of the ink chambers in the n-th ink chamber sequence, wherein the ink discharging channels are connected to the ink chambers in the n-th ink chamber sequence, wherein the ink supply channel is configured to allow the ink to flow into all of the ink chambers of all of the ink chamber groups so as to flow into the at least two ink discharging channels through the all of the ink chambers, and wherein a flow direction of the ink in the ink supply channel and a flow direction of the ink in the at least two ink discharging channels are limited to one identical direction.