| 摘要 |
There is provided a liquid discharge apparatus including: a liquid discharge head which includes a channel structure provided with a nozzle and a liquid channel, a driving element, and a driving unit; a light emitting part; a liquid receiving part receiving light passed through or reflected by the meniscus; and a controller. The controller controls the driving unit to apply at least one of several kinds of meniscus driving signals to the driving element in a state that the light emitting part emits the light to the nozzle, thereby vibrating the meniscus in the nozzle, and is configured to determine a recovery operation from among several kinds of recovery operations which have mutually different liquid discharge amounts to be discharged from the nozzle, on the basis of an amount of light which is received by the light receiving part in the case of vibrating the meniscus of the liquid. |
| 主权项 |
1. A liquid discharge apparatus configured to discharge liquid to a medium, comprising:
a liquid discharge head including a channel structure, a driving element, and a driving unit,
the channel structure including a nozzle and a liquid channel communicating with the nozzle,the driving element provided in the channel structure and configured to supply, to the liquid, discharge energy for discharging the liquid from the nozzle,the driving unit configured to apply a discharge driving signal and several kinds of meniscus driving signals to the driving element, the discharge driving signal being applied to discharge the liquid from the nozzle corresponding to the driving element, the meniscus driving signals having mutually different waveforms and being applied to vibrate meniscus of the liquid in a discharge port of the nozzle corresponding to the driving element, a light emitting part configured to emit light to the nozzle of the liquid discharge head; a light receiving part configured to receive light which has passed through the meniscus of the nozzle or reflected by the meniscus; and a controller configured to:
control the driving unit to apply at least one of the meniscus driving signals to the driving element in a state that the light emitting part emits the light to the nozzle corresponding to the driving element, thereby vibrating the meniscus of the liquid in the discharge port of the nozzle; anddetermine an operation from among no recovery operation and several kinds of recovery operations which have mutually different liquid discharge amounts to be discharged from the nozzle, based on an amount of light which is received by the light receiving part in the case of vibrating the meniscus of the liquid. |
