Liquid ejection device
A liquid ejection device includes a liquid supply unit configured to supply liquid to a liquid ejection head, a first supply passage, a second supply passage, a return pipe and a short-circuit pipe serving as a liquid flow passage, and a pump mechanism. A controller executes an ejection control for supplying the liquid from a pressure chamber to the liquid ejection head by opening first and second valve bodies and closing third and fourth valve bodies, a first circulation control for circulating the liquid through the liquid ejection head by closing the first and fourth valve bodies, opening the second and third valve bodies and operating the pump mechanism, and a second circulation control for circulating the liquid through the short-circuit pipe by closing the second valve body while opening the first, third and fourth valve bodies and operating the pump mechanism with an air vent mechanism released.
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Hiroshi
Yamashita