Liquid droplet ejecting apparatus

摘要

The present invention provides a liquid droplet ejecting apparatus that may cool, with a simple configuration, drive sections of piezoelectric elements. Namely, the liquid droplet ejecting apparatus has head modules that use piezoelectric elements to eject ink droplets, driver ICs that drive the piezoelectric elements, a ventilation unit that delivers dry air to the environs of the piezoelectric elements via a gas delivery passage disposed therein in order to dehumidify the environs of the piezoelectric elements, a branch tube that branches from the gas delivery passage and blows onto the driver ICs some of the air that has been delivered, and a duckbill valve that is disposed in the branch tube. Here, the ventilation unit that delivers the dry air in order to dehumidify the environs of the piezoelectric elements also cools the driver ICs, so the driver ICs can be cooled with a simple configuration.

主权项

1. A liquid droplet ejecting apparatus comprising:
a liquid droplet ejecting section that ejects liquid droplets by pressurizing a liquid using a piezoelectric element; a drive section that drives the piezoelectric element; a gas delivery section that delivers a dry gas; a gas delivery passage in which the piezoelectric element is disposed and through which the gas that has been delivered from the gas delivery section flows; a branch passage, which is disposed such that a side of the branch passage that is opposite a gas delivery passage side is facing the drive section, and which branches from the gas delivery passage and blows onto the drive section some of the gas that has been delivered from the gas delivery section; and a cutoff section, provided in the branch passage, that allows the gas to be delivered from the gas delivery passage to the branch passage, and that cuts off the flow of the gas from the branch passage to the gas delivery passage.