FLUID INJECTION DEVICE, AND FLUID INJECTION METHOD

摘要

PROBLEM TO BE SOLVED: To reduce a period of time until fluid is injected at inexpensive costs.SOLUTION: A fluid injection device comprises: a fluid injection section causing fluid to be injected; an injection control section controlling injection of the fluid from the fluid injection section; a fluid container storing the fluid supplied to the fluid injection section; a connection flow passage connecting the fluid injection section and the fluid container and becoming a flow passage where the fluid flows; an open/close section opening and closing the connection flow passage; and a volume change section changing a volume in the fluid container while causing the open/close section to perform opening and closing of the connection flow passage. The fluid injection device includes: a first injection mode where the injection control section causes the fluid to be injected from the fluid injection section while the volume change section is reducing the volume in a state of the connection flow passage being opened by the open/close section and the volume change section causes the open/close section to close the connection flow passage subsequent to the injection of the fluid; and a second injection mode where the injection control section permits the injection of the fluid from the injection control section while the volume change section is causing the open/close section to open the connection flow passage subsequent to the first injection mode.