| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid drop discharging device capable of detecting a dried state of a nozzle before the occurrence of a clogging in the nozzle, thereby preventing a low productivity possibly caused due to the nozzle clogging. SOLUTION: The liquid drop discharging device 100 has a discharge head 101 for changing a liquid material into liquid drops so as to discharge the same through a nozzle 112. Further, the liquid drop discharging device 100 comprises a vibrator 124 whose frequency changes corresponding to the mass of substances adhering to its surface, a detecting unit 122 for detecting the frequency of the vibrator 124 before and after the adhering of the liquid drops, a computing unit 131 for computing a solid concentration of the liquid drops adhering to the vibrator in accordance with the detection result of the detecting unit 122, a control device 105 for determining the dried state of the nozzle 112 in accordance with the computation result in the computing unit 131. COPYRIGHT: (C)2005,JPO&NCIPI |
