PROBLEM TO BE SOLVED: To favorably perform a change in ability of excision or the like according to a moving speed of a liquid injection mechanism in a liquid injection device.SOLUTION: There are provided a liquid injection mechanism including a liquid chamber and a volume fluctuation part that fluctuates a volume inside the liquid chamber, a liquid supplying part that supplies liquid to the liquid chamber, and a control part that controls the volume fluctuating part and the liquid supplying part. The control part changes at least either of electric voltage to be applied to the volume fluctuation part and a flow rate of the liquid to be supplied to the liquid chamber according to a moving speed of the liquid injection mechanism.COPYRIGHT: (C)2015,JPO&INPIT【課題】液体噴射装置において、液体噴射機構の移動速度に応じた切開等の能力の変更を好適に行うこと。【解決手段】液体室と、前記液体室内の容積を変動させる容積変動部と、を具備する液体噴射機構と、前記液体室に液体を供給する液体供給部と、前記容積変動部および前記液体供給部を制御する制御部と、を備え、前記制御部は、前記液体噴射機構の移動速度に応じて、前記容積変動部に印加する電圧と、前記液体室に供給される液体の流量と、の少なくとも一方を変更する。【選択図】図5
