Abstract: There is provided a head assembly including: a rigid substrate; a plurality of heads; a tank; a plurality of tubes; a heater; a plurality of flexible substrates; a relay substrate; a first member; and a second member arranged on one side in a first direction with respect to the first space. The rigid substrate is arranged in a first space formed in the first member. The tank, the heater, the plurality of tubes and the plurality of flexible substrates are arranged in a second space formed in the second member. The relay substrate is located between the first space and the second space in a first direction, and partitions the first space and the second space from each other.

Abstract: There is provided a head assembly including: a rigid substrate; a plurality of heads; a tank; a plurality of tubes; a heater; a plurality of flexible substrates; a relay substrate; a first member; and a second member arranged on one side in a first direction with respect to the first space. The rigid substrate is arranged in a first space formed in the first member. The tank, the heater, the plurality of tubes and the plurality of flexible substrates are arranged in a second space formed in the second member. The relay substrate is located between the first space and the second space in a first direction, and partitions the first space and the second space from each other.

Abstract: A liquid-droplet ejecting apparatus includes: N nozzles; N driving elements; M power supply circuits that create a driving signal to be selectively supplied to the N driving elements; and N selecting circuits that selectively connect one of the M power supply circuits to a corresponding one of the N driving elements. The N driving elements are connected to the M power supply circuits in a first combination until a particular condition is satisfied. The first combination is a combination between the M power supply circuits and an M driving element groups, into which the N driving elements are divided based on a voltage of the supplied driving signal. The N driving elements are connected to the M power supply circuits in a second combination after the particular condition is satisfied. The second combination is another combination between the M driving element groups and the M power supply circuits.

Abstract: A power supply board includes: first and second power supply circuits; first and second terminals configured to supply the electric power from the first and second power supply circuits to the head, respectively; a first line connected to an output terminal of the first power supply circuit; a second line connected to an output terminal of the second power supply circuit; and a branched line branched form the first line to be connected to an input terminal of the second power supply circuit and supplies the electric power from the first power supply circuit to the second power supply circuit. An input power source is connected to an input terminal of the first power supply circuit.

Abstract: A liquid-droplet ejecting apparatus includes: N nozzles; N driving elements; M power supply circuits that create a driving signal to be selectively supplied to the N driving elements; and N selecting circuits that selectively connect one of the M power supply circuits to a corresponding one of the N driving elements. The N driving elements are connected to the M power supply circuits in a first combination until a particular condition is satisfied. The first combination is a combination between the M power supply circuits and an M driving element groups, into which the N driving elements are divided based on a voltage of the supplied driving signal. The N driving elements are connected to the M power supply circuits in a second combination after the particular condition is satisfied. The second combination is another combination between the M driving element groups and the M power supply circuits.

Abstract: A printing apparatus includes first and second actuators for exerting force to liquid, the number of the second actuators being smaller than the number of the first actuators; a switching circuit; first, second and third power circuits for applying voltages to the first and second actuators; and a controller for controlling driving of the first and second actuators. The controller is configured to control the switching circuit to electrically connect the first power circuit and some of the first actuators, electrically connect the second power circuit to the other of the first actuators and electrically connect the third power circuit to the second actuators, based on the number of the first actuators and the number of the second actuators.

Abstract: A liquid-droplet ejecting apparatus includes: N nozzles; N driving elements; M power supply circuits that create a driving signal to be selectively supplied to the N driving elements; and N selecting circuits that selectively connect one of the M power supply circuits to a corresponding one of the N driving elements. The N driving elements are connected to the M power supply circuits in a first combination until a particular condition is satisfied. The first combination is a combination between the M power supply circuits and an M driving element groups, into which the N driving elements are divided based on a voltage of the supplied driving signal. The N driving elements are connected to the M power supply circuits in a second combination after the particular condition is satisfied. The second combination is another combination between the M driving element groups and the M power supply circuits.

Abstract: A power supply board includes: first and second power supply circuits; first and second terminals configured to supply the electric power from the first and second power supply circuits to the head, respectively; a first line connected to an output terminal of the first power supply circuit; a second line connected to an output terminal of the second power supply circuit; and a branched line branched form the first line to be connected to an input terminal of the second power supply circuit and supplies the electric power from the first power supply circuit to the second power supply circuit. An input power source is connected to an input terminal of the first power supply circuit.

Abstract: A liquid-droplet ejecting apparatus includes: N nozzles; N driving elements; M power supply circuits that create a driving signal to be selectively supplied to the N driving elements; and N selecting circuits that selectively connect one of the M power supply circuits to a corresponding one of the N driving elements. The N driving elements are connected to the M power supply circuits in a first combination until a particular condition is satisfied. The first combination is a combination between the M power supply circuits and an M driving element groups, into which the N driving elements are divided based on a voltage of the supplied driving signal. The N driving elements are connected to the M power supply circuits in a second combination after the particular condition is satisfied. The second combination is another combination between the M driving element groups and the M power supply circuits.

Abstract: A liquid jetting apparatus includes: a head including nozzles and driving elements arranged to correspond to the nozzles; a power source connected to the driving elements; and a control circuit connected to the power source. The control circuit determines whether an output voltage value of the power source is changed from a first voltage value to a second voltage value. When the control circuit has determined that the output voltage value is changed from the first voltage value to the second voltage value, the control circuit calculates an absolute value of a difference between the first voltage value and the second voltage value and compares the absolute value of the difference and a threshold value. When the absolute value of the difference is equal to or more than the threshold value, the control circuit determines a calculation voltage value smaller than the absolute value of the difference.

Abstract: A liquid jetting apparatus includes: a head including nozzles and driving elements arranged to correspond to the nozzles; a power source connected to the driving elements; and a control circuit connected to the power source. The control circuit determines whether an output voltage value of the power source is changed from a first voltage value to a second voltage value. When the control circuit has determined that the output voltage value is changed from the first voltage value to the second voltage value, the control circuit calculates an absolute value of a difference between the first voltage value and the second voltage value and compares the absolute value of the difference and a threshold value. When the absolute value of the difference is equal to or more than the threshold value, the control circuit determines a calculation voltage value smaller than the absolute value of the difference.

Abstract: A printing apparatus includes first and second actuators for exerting force to liquid, the number of the second actuators being smaller than the number of the first actuators; a switching circuit; first, second and third power circuits for applying voltages to the first and second actuators; and a controller for controlling driving of the first and second actuators. The controller is configured to control the switching circuit to electrically connect the first power circuit and some of the first actuators, electrically connect the second power circuit to the other of the first actuators and electrically connect the third power circuit to the second actuators, based on the number of the first actuators and the number of the second actuators.

Abstract: An electrophoretic display control device controls redrawing of an image of an electrophoretic display panel. The electrophoretic display control device includes a source pulse generation device that generates a source pulse for each of pixels, an area determination device that determines whether a specific area is a first area or a second area, a gate pulse generation device that generates a first gate pulse or a second gate pulse in accordance with the specific area determined as the first area or the second area by the area determination device, a source pulse application device that applies the source pulse generated by the source pulse generation device to a source line, and a gate pulse application device that applies the first gate pulse or the second gate pulse generated by the gate pulse generation device to a gate line.

Abstract: A status communication device includes a housing, at least one measuring unit, at least one state displaying unit, a transmitting unit, a receiving unit, a data selecting unit, and a state display controlling unit. The at least one measuring unit measures biological data of a user and an ambient state of the housing. The at least one state displaying unit displays a state of the user or the ambient state of the housing. The transmitting unit transmits first measurement-related data to at least one external device. The first measurement-related data is measurement data measured by the measuring unit or data based on the measurement data. The receiving unit receives second measurement-related data from at least one external device. The data selecting unit selects one state corresponding to the second measurement-related data to display with the state displaying unit if the receiving unit receives a plurality of the second measurement-related data within a prescribed interval.