A liquid discharge device includes a discharge section that discharges a liquid, a storage section, a transmission electrode provided at a first surface, a reception electrode provided at a second surface, a drive circuit that drives the transmission electrode, and a detection circuit that receives a reception signal from the reception electrode. The storage section is configured to store the liquid between the first surface and the second surface. The detection circuit includes a peak detection circuit that detects a peak value of the reception signal, a discharge switch provided at an output of the peak detection circuit, and a detection signal output circuit. The detection signal output circuit outputs a detection signal for detecting a residual quantity of the liquid stored in the storage section based on the output of the peak detection circuit. The discharge switch is switched from on to off before a detection operation of the detection circuit.

A recording apparatus to record an image on a sheet includes a roller pair and a switching unit. The roller pair sandwiches the sheet between the roller pair to convey the sheet. The switching unit switches between a first state in which the roller pair sandwiches the sheet and a second state in which rollers of the roller pair are separated from each other. The switching unit includes a first movable member that is moved in a first direction so that the first state is switched to the second state, and includes a second movable member that is moved in a second direction different from the first direction so that the first state is switched to the second state.

Examples of a fluidic die for temperature sensing are described herein. In some examples, a fluidic die may include a plurality of thermal sense modules. In some examples, each of the thermal sense modules includes a diode connected between a first switch and a second switch. In some examples, the fluidic die includes a differential amplifier to output a temperature voltage signal. In some examples, a first input of the differential amplifier is connected to the first switch of each of the thermal sense modules and a second input of the differential amplifier is connected to the second switch of each of the thermal sense modules.

In some examples, a circuit for use with a memory element and a nozzle for outputting fluid, includes a data line, a fire line, and a selector responsive to the data line to select the memory element or the nozzle. The selector is to select the memory element responsive to the data line having a first value, and to select the nozzle responsive to the data line having a second value different from the first value. The fire line is to control activation of the nozzle in response to the nozzle being selected by the selector, and to communicate data of the memory element in response to the memory element being selected by the selector.

A drive circuit for driving a first drive element having a first terminal and a second terminal and driving a second drive element having a third terminal and a fourth terminal, includes a first drive signal output circuit that is electrically coupled to the first terminal and outputs a first drive signal, and a second drive signal output circuit that is electrically coupled to the third terminal and outputs a second drive signal. The first drive signal output circuit includes a first reference voltage signal output circuit that outputs a first reference voltage signal. The first reference voltage signal output circuit is electrically coupled to the second terminal and the fourth terminal. The second drive signal output circuit is not electrically coupled to the second terminal and the fourth terminal. The first drive signal output circuit starts startup after the second drive signal output circuit.

A printing apparatus includes: power supply circuits including at least a first power supply circuit and a second power supply circuit, the power supply circuits having mutually different output voltages; and a head including nozzles, the nozzles forming groups arranged in a first direction, each of the nozzles being associated with any one of the power supply circuits. The groups include a first group and a second group adjacent to each other in the first direction. The first group is formed by nozzles associated with the first power supply circuit and nozzles associated with the second power supply circuit. The second group is formed by nozzles associated with the first power supply circuit and nozzles associated with the second power supply circuit.

A driver circuit for receiving a voltage supply at a supply input and driving a load through a load output, the circuit comprising: a charge inductor and a discharge inductor; a switching array comprising a plurality of switches; and a load switch coupled between a first terminal of the charge inductor and the load output; the switching array being arranged so that: in a first mode it can couple a second terminal of the charge inductor to the supply input and the first terminal of the charge inductor to ground to load a flux on the charge inductor; in a second mode it can decouple the first terminal of the charge inductor from ground so that, when the load switch is closed, flux can flow from the inductor to the load output; and in a third mode it can couple the discharge inductor between the load output and ground so that flux can be loaded on the discharge inductor from the load output.

A liquid discharge apparatus includes a liquid discharge head, a supply path that supplies a liquid from a liquid supply source to the liquid discharge head, a pump configured to suck and exhaust air, an air suction path in communication with an air suction side of the pump, an air exhaust path in communication with an air exhaust side of the pump, a first storage portion having a portion formed of a flexible wall that is flexible, a first air chamber provided on a side opposite to the first storage portion across the flexible wall and having at least a portion facing the flexible wall and configured to be displaced, and a first switching portion configured to switch a path coupled to the first air chamber between the air suction path and the air exhaust path.

A liquid discharge device in which an inter-wiring region between a first wiring through which a first drive signal, and a second wiring through which a second drive signal propagates includes a wide inter-wiring region in which an inter-wiring distance between the first wiring and the second wiring is larger than a sum of a wire width of a fourth wiring and a minimum diameter of a via wiring, and a narrow inter-wiring region in which the inter-wiring distance is smaller than the sum of the wire width of the fourth wiring and the minimum diameter of the via wiring, and larger than a wire width of the via wiring, and a third wiring is not located in the narrow inter-wiring region between a virtual line coupling a first terminal and a second terminal, and the wide inter-wiring region, in the inter-wiring region of a first wiring layer.

A liquid discharging apparatus has: a discharging section that discharges a liquid when at least one of a first piezoelectric element and a second piezoelectric element is driven; In a first mode in which the driving signal is output from the second output portion, the switch control circuit controls the first switch so as not to create a continuity and controls the second switch so as to create a continuity. In a second mode in which the constant-voltage signal is output from the second output portion, the switch control circuit controls the first switch so as to create a continuity and controls the second switch so as not to create a continuity.