METHOD FOR CLEANING LIQUID EJECTION HEAD

摘要

A method for cleaning a liquid ejection head which includes applying a voltage to a coating layer of the liquid ejection head to cause the coating layer to be eluted in a liquid so that kogation deposited on a coating layer is removed. When removing kogation deposited on the coating layer, temperatures of the liquids in the liquid chambers are selectively changed among a plurality of liquid chambers.

主权项

1. A method for cleaning a liquid ejection head that includes a plurality of liquid chambers, a heat generating resistive element configured to generate energy for ejecting a liquid in the liquid chambers, and a coating layer configured to coat the heat generating resistive element, the method including applying a voltage to the coating layer to provoke an electrochemical reaction between the coating layer and the liquid, and causing the coating layer to be eluted into the liquid, thereby removing kogation deposited on the coating layer, wherein
when removing kogation deposited on the coating layer, temperatures of the liquids in the liquid chambers are selectively changed among the plurality of liquid chambers.