| 摘要 |
PROBLEM TO BE SOLVED: To provide a pump, a pump device, a dispensing head, a dispensing head array and a dispensing device capable of sucking and discharging a fluid with a simple structure and with high accuracy. SOLUTION: This dispensing head 3 has a pump 5, and a nozzle mounting part 31 capable of mounting a nozzle 300. The pump 5 has a housing 51, a plurality of volume-variable members 52 installed in the housing 51, and a current-carrying part (electrode) for applying a voltage to the volume-variable members 52 by carrying a current. When the voltage is applied to the volume- variable members 52, the volumes thereof are increased to reduce the volume of a space left in the housing 51, so that the air in the housing 51 is discharged from an inlet-outlet port 511 and a liquid 500 in the nozzle 300 is discharged. When the application of the voltage to the volume-variable members 52 is stopped, the volumes of the volume-variable members 52 are reduced, and the air in the nozzle 300 flows into the housing 51 from the port 511, so that the liquid 500 is sucked into the nozzle 300. COPYRIGHT: (C)2004,JPO |
