| 摘要 |
PROBLEM TO BE SOLVED: To provide a droplet weight measuring apparatus capable of precisely detecting the weight of droplets discharged from a discharge head with a simple configuration, and to provide a droplet discharging apparatus. SOLUTION: A QCM sensor 106 comprises a crystal 110, and electrodes 110a, 110b formed on both the surfaces of the crystal 110. A vibration voltage is applied from a vibration voltage oscillation section 111 to the electrode 110a to vibrate the crystal 110. A measurement section 112 and an arithmetic section 113 detect a change in the resonance frequency of the crystal 110 before and after droplets discharged from a discharge head 103 adhere to the electrode 110b, and measures the weight of droplets adhering to the electrode 110b. Then, the resolution of a detection means is set to 10% or smaller to the amount of droplets adhering to the electrode 110b. COPYRIGHT: (C)2005,JPO&NCIPI
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