PROBLEM TO BE SOLVED: To detect clogging of a fluid in a fluid injection device with a higher degree of sensitivity.SOLUTION: A fluid injection device includes: a pump for making a fluid flow a fluid receiving member which has a space for receiving at least a part of the fluid that is made to flow and has a through-hole that penetrates into the space a film-like member provided on the through-hole and a sensor for detecting changes of the film-like member. In the fluid injection device, rigidity of the fluid receiving member is higher than at least that of the film-like member.COPYRIGHT: (C)2015,JPO&INPIT【課題】流体注入装置において流体の詰まりをより感度高く検出すること。【解決手段】流体を流動させるポンプと、流動させられた前記流体の少なくとも一部を受ける空間を有する流体受け部材であって、前記空間に貫通する貫通孔を有する流体受け部材と、前記貫通孔に設けられた膜状部材と、前記膜状部材の変化を検出するセンサーと、を備え、前記流体受け部材の剛性は少なくとも前記膜状部材の剛性よりも高いことを特徴とする流体注入装置。【選択図】図11
