Abstract: In a method of controlling a liquid ejecting apparatus, where the liquid ejecting apparatus includes a pressure chamber that communicates with a nozzle that ejects a liquid, a drive element that changes a pressure of the liquid in the pressure chamber, and a drive circuit that supplies the drive element with an ejection pulse that generates a change in the pressure that ejects the liquid from the nozzle, the method includes specifying a viscosity of the liquid in the nozzle and a surface tension of the liquid in the nozzle from a residual vibration when the pressure of the liquid in the pressure chamber is changed, and controlling a waveform of the ejection pulse according to the viscosity and the surface tension.

Abstract: A liquid ejecting head includes a nozzle that is in communication with a pressure chamber and ejects a first liquid, a passage formation substrate that has a liquid passage which extends from a common liquid chamber in communication with a plurality of pressure chambers to the nozzle and through which the first liquid flows, and a circulation passage that is formed in the passage formation substrate, passes near the nozzle, and is not in communication with the liquid passage, and through which a second liquid circulates.

Abstract: A soft magnetic alloy ribbon is a ribbon made of a Fe-based soft magnetic alloy and includes a first laser peening trace row and a second laser peening trace row each of which includes a plurality of laser peening traces in a row in a first direction and which are arranged adjacent to each other in a second direction intersecting the first direction, in which ?0<?1 where a straight line at an equal separation distance from the first laser peening trace row and the second laser peening trace row is defined as a central line, a circle which is located around a center of the laser peening traces constituting the first laser peening trace row and which has a first radius shorter than the separation distance is defined as a first reference circle, a straight line which passes through the center and is parallel to the second direction is defined as a reference line, an in-plane stress at an intersection of the reference line and the central line is defined as ?0, and an in-plane stress on a circumference of the

Abstract: A soft magnetic alloy ribbon is made of a Fe-based soft magnetic alloy and includes a first laser peening trace row and a second laser peening trace row each of which includes a plurality of laser peening traces in a row in a first direction and which are arranged adjacent to each other in a second direction intersecting the first direction, and a domain wall extending in a third direction, in which D0<D1 where a straight line at an equal separation distance from the first laser peening trace row and the second laser peening trace row is defined as a central line, a straight line which has a first distance where a distance from the first laser peening trace row is shorter than the separation distance is defined as a first reference line, a width of the domain wall at a position intersecting the central line is defined as D0, and a width of the domain wall at a position intersecting the first reference line is defined as D1.

Abstract: In a motor including an armature, and a field system having a main pole magnetized in first directions in which a distance from the armature is defined and a sub-pole adjacent to the main pole in second directions orthogonal to the first directions and magnetized in the second directions and forming a Halbach array, a first dimension of the main pole in the second directions, a second dimension of the main pole and the sub-pole in the first directions, and a third dimension as a sum of the dimensions of the main pole and the sub-pole in the second directions are determined according to a flux content generated in a surface of the field system at the armature side.

Abstract: In a method of controlling a liquid ejecting apparatus, where the liquid ejecting apparatus includes a pressure chamber that communicates with a nozzle that ejects a liquid, a drive element that changes a pressure of the liquid in the pressure chamber, and a drive circuit that supplies the drive element with an ejection pulse that generates a change in the pressure that ejects the liquid from the nozzle, the method includes specifying a viscosity of the liquid in the nozzle and a surface tension of the liquid in the nozzle from a residual vibration when the pressure of the liquid in the pressure chamber is changed, and controlling a waveform of the ejection pulse according to the viscosity and the surface tension.

Abstract: In a method of controlling a liquid ejecting apparatus, where the liquid ejecting apparatus includes a pressure chamber that communicates with a nozzle that ejects a liquid, a drive element that changes a pressure of the liquid in the pressure chamber, and a drive circuit that supplies the drive element with an ejection pulse that generates a change in the pressure that ejects the liquid from the nozzle, the method includes specifying a viscosity of the liquid in the nozzle and a surface tension of the liquid in the nozzle from a residual vibration when the pressure of the liquid in the pressure chamber is changed, and controlling a waveform of the ejection pulse according to the viscosity and the surface tension.

Abstract: A droplet discharge apparatus includes a first head, a first-ink pack storing first ink, a second head, a second ink pack storing second ink, a cleaning liquid container storing cleaning liquid, a common flow path system, a cleaning liquid flow path, a first pump feeding the first ink from the first ink pack to the second ink pack through the common flow path system, a second pump feeding the cleaning liquid from the cleaning liquid container to the first ink pack through the cleaning liquid flow path and the common flow path system, a first valve controlling a liquid flow rate between the common flow path system and the first ink pack, a second valve controlling a liquid flow rate between the common flow path system and the second ink pack, a third valve controlling a liquid flow rate between the common flow path system and the cleaning liquid flow path, and a control unit, wherein the common flow path system, the first valve, and the second valve are located higher than a liquid surface in the first ink pac

Abstract: A droplet-discharge-apparatus includes a first-head, a first-ink-container storing first-ink, a second-head, a second-ink-container storing second-ink, a cleaning-liquid-container storing cleaning-liquid, a common-flow-path-system, a cleaning-liquid-flow-path, a first-pomp feeding the first-ink from the first-ink-container to the second-ink-container through the common-flow-path-system, a second-pomp feeding the cleaning-liquid from the cleaning-liquid-container to the first-ink-container through the cleaning-liquid-flow-path and the common-flow-path-system, a first-valve controlling a liquid flow rate between the common-flow-path-system and the first-ink-container, a second-valve controlling a liquid flow rate between the common-flow-path-system and the second-ink-container, a third-valve controlling a liquid flow rate between the common-flow-path-system and the cleaning-liquid-flow-path, and a control-unit.

Abstract: In a method of controlling a liquid ejecting apparatus, where the liquid ejecting apparatus includes a pressure chamber that communicates with a nozzle that ejects a liquid, a drive element that changes a pressure of the liquid in the pressure chamber, and a drive circuit that supplies the drive element with an ejection pulse that generates a change in the pressure that ejects the liquid from the nozzle, the method includes specifying a viscosity of the liquid in the nozzle and a surface tension of the liquid in the nozzle from a residual vibration when the pressure of the liquid in the pressure chamber is changed, and controlling a waveform of the ejection pulse according to the viscosity and the surface tension.

Abstract: In a motor including an armature, and a field system having a main pole magnetized in first directions in which a distance from the armature is defined and a sub-pole adjacent to the main pole in second directions orthogonal to the first directions and magnetized in the second directions and forming a Halbach array, a first dimension of the main pole in the second directions, a second dimension of the main pole and the sub-pole in the first directions, and a third dimension as a sum of the dimensions of the main pole and the sub-pole in the second directions are determined according to a flux content generated in a surface of the field system at the armature side.

Abstract: A liquid droplet ejecting apparatus includes a nozzle; a flow-path-section having a first pressure-chamber, a communication-path enabling the nozzle to communicate with the first pressure-chamber, and a second pressure-chamber communicating with the first pressure-chamber through the communication-path; a first signal-generator that generates a first driving signal to drive a first piezoelectric-element; a second signal-generator that generates a second driving signal to drive a second piezoelectric-element; and an inspector that inspects ejection from the nozzle based on electromotive force generated by the first piezoelectric-element due to residual vibration that has occurred in the flow-path-section due to the driving of the first piezoelectric-element. The first driving signal includes a first inspection waveform.

Abstract: A method of cleaning a liquid discharging apparatus has a second flow path cleaning step of causing a cleaning liquid to pass through a second flow path so that the second flow path is cleaned, and also includes a first flow path cleaning step of causing the cleaning liquid that has passed through the second flow path to pass through a first flow path so that the first flow path is cleaned.

Abstract: A droplet-discharge-apparatus includes a first-head, a first-ink-pack storing first-ink, a second-head, a second-ink-pack storing second-ink, a cleaning-liquid-container storing cleaning-liquid, a common-flow-path-system, a cleaning-liquid-flow-path, a first-pomp feeding the first-ink from the first-ink-pack to the second-ink-pack through the common-flow-path-system, a second-pomp feeding the cleaning-liquid from the cleaning-liquid-container to the first-ink-pack through the cleaning-liquid-flow-path and the common-flow-path-system, a first-valve controlling a liquid flow rate between the common-flow-path-system and the first-ink-pack, a second-valve controlling a liquid flow rate between the common-flow-path-system and the second-ink-pack, a third-valve controlling a liquid flow rate between the common-flow-path-system and the cleaning-liquid-flow-path, and a control-unit, wherein the common-flow-path-system, the first-valve, and the second-valve are located higher than a liquid surface in the first-ink-pac

Abstract: A droplet-discharge-apparatus includes a first-head, a first-ink-container storing first-ink, a second-head, a second-ink-container storing second-ink, a cleaning-liquid-container storing cleaning-liquid, a common-flow-path-system, a cleaning-liquid-flow-path, a first-pomp feeding the first-ink from the first-ink-container to the second-ink-container through the common-flow-path-system, a second-pomp feeding the cleaning-liquid from the cleaning-liquid-container to the first-ink-container through the cleaning-liquid-flow-path and the common-flow-path-system, a first-valve controlling a liquid flow rate between the common-flow-path-system and the first-ink-container, a second-valve controlling a liquid flow rate between the common-flow-path-system and the second-ink-container, a third-valve controlling a liquid flow rate between the common-flow-path-system and the cleaning-liquid-flow-path, and a control-unit.

Abstract: A method of cleaning a liquid discharging apparatus has a second flow path cleaning step of causing a cleaning liquid to pass through a second flow path so that the second flow path is cleaned, and also includes a first flow path cleaning step of causing the cleaning liquid that has passed through the second flow path to pass through a first flow path so that the first flow path is cleaned.

Abstract: A machine learning device learning a movement of a robot where a human and the robot collaboratively work includes: a state observation unit observing a state variable representing a state of the robot when the human and the robot collaboratively work; a reward calculation unit calculating a reward based on control data for controlling the robot, the state variable, an action of the human, and a facial expression of the human; and a value function update unit updating an action value function for controlling a movement of the robot, based on the reward and the state variable.

Abstract: A liquid droplet ejecting apparatus includes a nozzle; a flow-path-section having a first pressure-chamber, a communication-path enabling the nozzle to communicate with the first pressure-chamber, and a second pressure-chamber communicating with the first pressure-chamber through the communication-path; a first signal-generator that generates a first driving signal to drive a first piezoelectric-element; a second signal-generator that generates a second driving signal to drive a second piezoelectric-element; and an inspector that inspects ejection from the nozzle based on electromotive force generated by the first piezoelectric-element due to residual vibration that has occurred in the flow-path-section due to the driving of the first piezoelectric-element. The first driving signal includes a first inspection waveform.

Abstract: A liquid ejecting head includes: a nozzle that has a nozzle opening from which liquid is ejected; a pressure compartment that is in communication with the nozzle; a drive element configured to vary pressure of the liquid inside the pressure compartment for ejecting the liquid from the nozzle opening; and a control element configured to apply energy to the liquid in a flow passage from the pressure compartment to the nozzle opening.

Abstract: There is provided a recording apparatus including an apparatus main body including a recording head that ejects liquid from a nozzle opening formed in a nozzle plate, and an upstream electrode portion and a downstream electrode portion that are disposed on an upstream side and a downstream side in a transporting direction of the medium to sandwich the position facing the nozzle plate therebetween, in which the upstream electrode portion and the downstream electrode portion are configured such that an electric field is formed between the upstream electrode portion and the downstream electrode portion as voltages are applied.