Inkjet head with damper member in common ink chamber, and method for driving inkjet head

摘要

An inkjet head includes pressure chambers arranged in 2 or more rows and a common ink chamber connected to all the pressure chambers, wherein each of the pressure chambers includes a damper member inside of the common ink chamber of the inkjet head for commonly supplying an ink from the common ink chamber via an ink inlet which faces the common ink chamber, and the shortest distance between the damper member and the ink inlet is made shorter than the distance between ink inlets in adjacent rows of pressure chambers.

主权项

1. An inkjet head, comprising:
pressure chambers arranged in two or more rows; and a common ink chamber connected to all the pressure chambers, each of the pressure chambers accepting an ink commonly supplied from the common ink chamber via an ink inlet which faces the common ink chamber and ejecting the ink from nozzles connected to an ink outlet of the pressure chambers due to a change in pressure generated in the pressure chambers, the inkjet head further comprising a damper member inside of the common ink chamber, wherein the shortest distance between the damper member and the ink inlet is shorter than the distance between the ink inlets in adjacent rows thereof; wherein the damper member comprises a damper chamber having a sealed gas; wherein the pressure inside of the damper member is atmospheric pressure or less when the temperature of an ink of the common ink chamber reaches the working temperature.