Patent ID: 8998381
Filing Date: 2015-04-07
Classification: B41J

Abstract:
1. A liquid jet head comprising: a nozzle plate having a nozzle line including a plurality of ejection nozzle holes; an actuator substrate having channel lines including ejection channels communicated with the ejection nozzle holes; a liquid storage unit configured to store residual liquid that attaches to the nozzle plate; and a pressure adjustment unit configured to adjust pressure so as to bring the liquid supplied into the ejection channels to a negative pressure, wherein the channel lines include a dummy channel that is incapable of driving, liquid is supplied into the dummy channel while being brought to a negative pressure, the nozzle plate includes a dummy nozzle hole communicated with the dummy channel, the dummy nozzle hole is placed at a position to aspirate the residual liquid stored in the liquid storage unit, and the dummy channel is communicated with the ejection channel such that the liquid is supplied into the dummy channel.