Printing apparatus, method, and computer-readable storage medium for maintaining consistent quality of liquid ejection from nozzles

Abstract

A printing apparatus includes a controller including a multiplexing circuit and a separation circuit. The multiplexing circuit generates a time division multiplex signal based on first data representing a first drive waveform and second data representing a second drive waveform. The separation circuit includes a switch to separate a first drive waveform signal indicating the first drive waveform or a second drive waveform signal indicating the second drive waveform from the time division multiplex signal based on a synchronization signal. The controller causes the switch to separate the first drive waveform signal from the time division multiplex signal to drive an actuator to cause a nozzle to eject liquid, and causes the switch to separate the second drive waveform signal from the time division multiplex signal to drive the actuator without causing the nozzle to eject the liquid, thereby increasing a temperature of the separation circuit.