| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jet apparatus capable of discharging a liquid with high accuracy, a printing apparatus, and the like.SOLUTION: A liquid jet apparatus comprises: a capacitive load driving circuit including a drive waveform signal generation circuit; a modulation circuit; a multilayer wiring board; a switching circuit including a first transistor; a second transistor, and a capacitor mounted on the side of a first wiring layer of the multilayer wiring board; and a smoothing filter. The multilayer wiring board comprises: a first wiring, a second wiring, a third wiring, and a fourth wiring formed in the first wiring layer; a fifth wiring formed in its second wiring layer; a first via conductor for electrically connecting the third wiring and the fifth wiring; and a second via conductor for electrically connecting the fourth wiring and the fifth wiring. The first transistor has its drain electrode connected to the first wiring and its source electrode connected to the second wiring, the second transistor has its drain electrode connected to the second wiring and its source electrode connected to the third wiring, and the capacitor has its first electrode connected to the first wiring and its second electrode connected to the fourth wiring. |
