LIQUID DISCHARGE APPARATUS

摘要

A liquid discharge apparatus includes a power supply potential output section that outputs a first power supply potential, a first and a second switch drive section that generate a first and a second switch drive signal according to a modulation signal of an original drive signal, a first and a second switch that operate according to the first and the second switch drive signal, a rectifying device that is arranged between an output terminal of the power supply potential output section and a terminal of the first switch drive section, a connection node that is electrically connected to the first switch and the second switch, a capacitance element that is arranged between the terminal and the connection node, a signal conversion section that converts a signal which is generated at the connection node, into a drive signal, and a piezoelectric element that is transformed by the drive signal.

主权项

1. A liquid discharge apparatus comprising:
a piezoelectric inkjet head; and a head driver that generates a driving signal for driving the piezoelectric inkjet head, the head driver having
a capacitor that has a first terminal and a second terminal, anda first electric power supply that outputs a first electric potential level that selectively rises from a reference potential level to a predetermined potential level through a terminal of the first electric power supply,wherein the first terminal of the capacitor is electrically connected to the terminal of the first electric power supply, and the second terminal of the capacitor is selectively applied the reference potential level.