Patent ID: 9724923
Date: 2017-08-08
CPC Classifications: B41J

Claim:
1. A liquid ejection apparatus comprising: a liquid ejection head having a nozzle which ejects a liquid containing volatile organic compounds to a medium; and a maintenance unit that has a cap, which forms a closed space including an opening of the nozzle, a suction unit that suctions a fluid from the closed space and discharges the liquid from the nozzle by reducing pressure of the closed space, a waste liquid container configured to contain the fluid suctioned from the closed space, and a buffer tank having a specific spatial volume and disposed downstream of the cap and upstream of the waste liquid container, the buffer tank communicating with the waste liquid container through the suction unit, wherein the maintenance unit is provided with a filter for adsorbing volatile organic compounds contained in the liquid discharged from the liquid ejection head, the filter being disposed downstream of the waste liquid container and having a downstream side open to the atmosphere.