Patent ID: 8708451

Claim:
A liquid ejection apparatus comprising: a liquid ejection head which includes an ejection surface having a plurality of ejection ports for ejecting liquid; a cap unit which is configured to take a sealed state where an ejection space facing the ejection surface is sealed from an exterior space and a non-sealed state where the ejection space is opened to the exterior space; a humidified air supply mechanism which is configured to perform a humidifying operation of generating humidified air and supplying the humidified air into the ejection space at the sealed state; a forcible discharge mechanism which is configured to perform a forcible discharge operation of applying pressure to liquid in the liquid ejection head to forcibly discharge liquid from the ejection ports; a measuring unit which is configured to measure a lapse time after a power supply of the liquid ejection apparatus becomes off and until the power supply becomes on; and a control unit which is configured to control the humidified air supply mechanism to perform the humidifying operation after controlling the cap unit to take the sealed state when the power supply becomes off, and which is configured to control the forcible discharge mechanism to perform the forcible discharge operation when the power supply becomes on, wherein when the power supply becomes on, the control unit is configured to control the humidified air supply mechanism to perform the humidifying operation at the sealed state before performing the forcible discharge operation based on whether the lapse time measured by the measuring unit exceeds a predetermined time.