PROBLEM TO BE SOLVED: To reduce waste occurring when redundancy is imparted to components of a fluid injection device.SOLUTION: A fluid injection device comprises: a first fluid injection section injecting a fluid in a pulsed manner in response to a first driving signal a second fluid injection section injecting the fluid in the pulsed manner in response to a second driving signal a first fluid supply section supplying the fluid via a first flow passage to the first fluid injection section a second fluid supply section supplying the fluid via a second flow passage to the second fluid injection section a first fluid injection control section executing a first preparation operation bringing the fluid in the first flow passage into a predetermined state and subsequently outputting the first driving signal a second fluid injection control section executing a second preparation operation bringing the fluid in the second flow passage into the predetermined state and subsequently outputting the second driving signal and an abnormality detection section detecting abnormality occurring in any of the first fluid injection section, the first fluid supply section, the first flow passage and the first fluid injection control section. The second fluid injection control section starts the second preparation operation when the abnormality detection section detects the abnormality.COPYRIGHT: (C)2016,JPO&INPIT【課題】流体噴射装置の構成要素に冗長性を持たせた場合に生じる無駄を減らす。【解決手段】第1駆動信号に応じて流体をパルス状に噴射する第1流体噴射部と、第2駆動信号に応じて流体をパルス状に噴射する第2流体噴射部と、第1流体噴射部に第1流路を介して流体を供給する第1流体供給部と、第2流体噴射部に第2流路を介して流体を供給する第2流体供給部と、第1流路内の流体を所定の状態にする第1準備動作を実行した後に第1駆動信号を出力する第1流体噴射制御部と、第2流路内の流体を所定の状態にする第2準備動作を実行した後に第2駆動信号を出力する第2流体噴射制御部と、第1流体噴射部、第1流体供給部、第1流路及び第1流体噴射制御部の少なくともいずれかに生じる異常を検知する異常検知部とを備え、第2流体噴射制御部は異常検知部が異常を検知した場合に第2準備動作を開始することを特徴とする流体噴射装置。【選択図】図7
