LIQUID EJECTION DEVICE, CONTROL METHOD FOR LIQUID EJECTION DEVICE

• Main Author: TSUKADA KENJI
• Format: Patent
• Language: English; Japanese
• Published: 08.04.2021
• Subjects: CORRECTION OF TYPOGRAPHICAL ERRORS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

To provide a liquid ejection device in which a connection fluid channel can be easily filled with liquid, and a control method for the liquid ejection device.SOLUTION: A liquid ejection device comprises: a liquid ejection head 18 ejecting liquid; a liquid supply fluid channel 39 which has a liquid housing portion 39b housing the liquid; a feed pump 70 which feeds the liquid from the liquid housing portion 39b toward the liquid ejection head 18; a supply-side connection fluid channel 50 which connects a first supply connection portion 54 and a second supply connection portion 55 to each other in the liquid supply fluid channel 39; a supply-side branch fluid channel 51 which connects a third supply connection portion 56 provided in the supply-side connection fluid channel 50 and the liquid housing portion 39b to each other; a supply-side on-off valve 64 which is provided in the supply-side branch fluid channel 51, and can open/close the supply-side branch fluid channel 51; and a control unit which controls operation of the feed pump 70 and the supply-side on-off valve 64. The control unit fills the supply-side connection fluid channel 50 and the supply-side branch fluid channel 51 with the liquid by combining drive of the feed pump 70 with on-off operation of the supply-side on-off valve 64.SELECTED DRAWING: Figure 2 【課題】接続流路に液体を容易に充填できる液体吐出装置、液体吐出装置の制御方法を提供する。【解決手段】液体を吐出する液体吐出ヘッド１８と、液体を収容する液体収容部３９ｂを有する液体供給流路３９と、液体収容部３９ｂから液体吐出ヘッド１８へ向かって液体を送る供給ポンプ７０と、液体供給流路３９において第１供給接続部５４及び第２供給接続部５５を接続する供給側接続流路５０と、供給側接続流路５０に設けられる第３供給接続部５６及び液体収容部３９ｂを接続する供給側分岐流路５１と、供給側分岐流路５１に設けられ、供給側分岐流路５１の開閉が可能な供給側開閉弁６４と、供給ポンプ７０及び供給側開閉弁６４の動作を制御する制御部と、を備え、制御部は、供給ポンプ７０の駆動と供給側開閉弁６４の開閉動作とを組み合わせることにより、供給側接続流路５０及び供給側分岐流路５１に液体を充填する。【選択図】図２