Ejection device

An ejection device comprising:

• a nozzle that ejects an ejection fluid;
• an ejection-side pump including a pressure transmitting member, a first ejection chamber, and a driving chamber adjacent to the first ejection chamber across the pressure transmitting member;
• and
• a driving-side pump including a second ejection chamber,
• wherein the election device is configured to operate with the ejection-side pump in an attached position and in a detached position,
• in the attached position:
• the first ejection chamber is connected to the nozzle and filled with the ejection fluid;
• a driving-side flow path leads from the second ejection chamber of the driving-side pump to the driving chamber of the ejection-side pump;
• the driving chamber, the driving-side flow path, and the second ejection chamber are filled with a driving fluid;
• by application of pressure from the driving-side pump to the driving fluid in the second ejection chamber, the pressure is transmitted through the driving fluid to the ejection-side pump;
• and
• the ejection-side pump transmits the pressure having been transmitted through the driving fluid further to the ejection fluid in the first ejection chamber through the pressure transmitting member, thereby ejecting the ejection fluid from the nozzle, and
• in the detached position:
• the nozzle is connected to the second ejection chamber;
• the second ejection chamber is filled with the ejection fluid;
• and
• by application of pressure from the driving-side pump to the ejection fluid in the second ejection chamber, the ejection fluid is ejected from the nozzle.