PROBLEM TO BE SOLVED: To reduce, with a simple configuration, flowing out of fluid when pulse stream jetting is stopped.SOLUTION: A fluid jetting device includes a fluid chamber, a volume changing part for changing volume of the fluid chamber, a fluid supply part which supplies fluid to the fluid chamber, and a connection flow path which communicates between the fluid chamber and a fluid jetting opening part. A control method of the fluid jetting device includes steps S150, S160 in which, with a supply flow rate of the fluid of the fluid supply part at a predetermined flow rate, the volume changing part is made to operate to change the volume of the fluid chamber, so that the fluid is jetted in pulse from the fluid jetting opening part, and steps S180, S190 in which changing of volume by the volume changing part is stopped, and the supply flow rate of the fluid by the fluid supply part is lowered from the predetermined flow rate.COPYRIGHT: (C)2015,JPO&INPIT【課題】パルス流噴射の停止時における流体の流出を、簡単な構成で低減する。【解決手段】流体室と、前記流体室の容積を変更する容積変更部と、前記流体室に流体を供給する流体供給部と、前記流体室を流体噴射開口部に連通する接続流路とを備える流体噴射装置の制御方法であって、前記流体供給部の流体の供給流量を所定の流量とし、前記容積変更部を動作させて前記流体室の容積を変更することによって、前記流体噴射開口部から前記流体をパルス状に噴射させるステップS150、S160と、前記容積変更部による容積の変更を停止させるとともに、前記流体供給部による流体の供給流量を前記所定の流量よりも減少させるステップS180、S190とを備える。【選択図】図5
