| 摘要 |
PROBLEM TO BE SOLVED: To detect abnormality of a nozzle with less possibility that throughput is lowered and processing load is increased in a liquid jetting device. SOLUTION: A change of ink pressure of a non-driving cavity 174b and a non-driving cavity 174d caused by crosstalk C is detected from voltage generated between electrodes of an actuator 20b and an actuator 20d to which driving voltage waveform is not applied. Presence or absence of the abnormality of jetting nozzles N1 to N5 is detected based on a change of the ink pressure of the non-driving cavity 174b and the non-driving cavity 174d. To put it more concretely, the presence or absence of the abnormality of the jetting nozzles N1 to N5 is detected by comparing voltage waveform generated between the electrodes of the actuator 20b and the actuator 20d to which the driving voltage waveform is not applied with that at ordinary time. COPYRIGHT: (C)2011,JPO&INPIT |
