Patent ID: 9090112
Filing Date: 2015-07-28
Classification: B41J

Abstract:
1. A liquid discharge device comprising: a liquid discharge head including a discharge port surface on which discharge ports for discharging liquid are formed, an electrothermal conversion element configured to generate energy for discharging liquid from the discharge ports, and a protection film configured to cover at least the electrothermal conversion element; and a cap configured to cover the discharge port surface, wherein the cap is arranged along the discharge port surface at a position opposite to the protection film via the discharge ports in a state where the cap covers the discharge port surface, and wherein the cap includes an electrode configured to be used to apply voltage between the protection film and the electrode, wherein the liquid discharge device applies voltage between the protection film and the electrode to cause the protection film to be eluted into the liquid in a state where the discharge port surface is covered by the cap and electrical conduction is made between the protection film and the electrode via the liquid.