Abstract: A liquid ejecting apparatus is configured to transition to a first mode in which less electric power is consumed per unit period than in the printing operation and a second mode in which less electric power is consumed per unit period than in the first mode. The second mode is started at the end of a predetermined period of time following completion of the printing operation. The first mode is started after the printing operation is completed and before the second mode is started. The period of time taken for the liquid ejecting apparatus to return to the printing operation from the first mode is shorter than the period of time taken for the liquid ejecting apparatus to return to the printing operation from the second mode.

Abstract: A print head drive circuit that drives a print head including an ejection portion having a piezoelectric element and a changeover switch, with a selection signal including a first information block and a second information block for selecting whether or not to drive the piezoelectric element, and a switching timing signal for changing a logic level to control a switching timing of the changeover switch, outputs the first information block in which a logic level of the selection signal changes without changing a logic level of the switching timing signal in a first period, changes the logic level of the switching timing signal, and does not change the logic level of the selection signal in a second period, and outputs the second information block in which the logic level of the selection signal changes without changing the logic level of the switching timing signal in a third period.

Abstract: A print head drive circuit that drives a print head including an ejection portion having a piezoelectric element and a changeover switch, with a selection signal including a first information block and a second information block for selecting whether or not to drive the piezoelectric element, and a switching timing signal for changing a logic level to control a switching timing of the changeover switch, outputs the first information block in which a logic level of the selection signal changes without changing a logic level of the switching timing signal in a first period, changes the logic level of the switching timing signal, and does not change the logic level of the selection signal in a second period, and outputs the second information block in which the logic level of the selection signal changes without changing the logic level of the switching timing signal in a third period.

Abstract: A liquid ejecting apparatus which includes a modulation circuit which generates a modulated signal; a transistor which generates an amplified-modulated signal; a low pass filter which generates a driving signal; a thermistor; a control section which controls printing; and a multilayered circuit board on which the modulation circuit, the transistor, and the low pass filter are mounted, in which the modulation circuit generates the modulated signal by feeding back a signal based on any one of the modulated signal, the amplified-modulated signal, and the driving signal, the multilayered circuit board has a multilayer structure of three layers or more, a feedback wiring pattern which feeds back any one of the modulated signal, the amplified-modulated signal, and the driving signal to the modulation circuit, and a temperature wiring pattern which electrically connects the thermistor and the control section does not intersect the feedback wiring pattern when viewed planarly.

Abstract: A liquid ejecting apparatus which includes a modulation circuit which generates a modulated signal; a transistor which generates an amplified-modulated signal; a low pass filter which generates a driving signal; a thermistor; a control section which controls printing; and a multilayered circuit board on which the modulation circuit, the transistor, and the low pass filter are mounted, in which the modulation circuit generates the modulated signal by feeding back a signal based on any one of the modulated signal, the amplified-modulated signal, and the driving signal, the multilayered circuit board has a multilayer structure of three layers or more, a feedback wiring pattern which feeds back any one of the modulated signal, the amplified-modulated signal, and the driving signal to the modulation circuit, and a temperature wiring pattern which electrically connects the thermistor and the control section does not intersect the feedback wiring pattern when viewed planarly.