Abstract: According to one embodiment, a liquid crystal optical element includes a transparent substrate, and a liquid crystal layer which faces the transparent substrate and has a cholesteric liquid crystal and an additive exhibiting liquid crystallinity. Refractive anisotropy of the additive is less than refractive anisotropy of the liquid crystal layer.

Abstract: A printer (1) includes: a head frame (30); a first positioning part (51) facing to a first area (31) of the head frame (30); a second positioning part (52) facing to a second area (32) of the head frame (30); a first protruding part (41) protruding from the first area (31) toward the first positioning part (51); a second protruding part (42) protruding from the second area (32) toward the second positioning part (52); a first groove part (51V) provided in the first positioning part (51) along the ejection direction; a first pressing part (61) pressing the first protruding part (41) to the first groove part (51V); a second pressing part (62) pressing the second protruding part (42) to the second positioning part (52); and a first regulation part (71L) and a second regulation part (72L) restricting a movement of the head frame (30) in the ejection direction.

Abstract: A liquid discharge head includes a flow channel member, a pressurization part, a plurality of discharge holes, a flexible substrate, a cover member, and a heater. The flow channel member includes a first surface and a second surface that is positioned on an opposite side of the first surface. The pressurization part is positioned on the first surface. The plurality of discharge holes are positioned on the second surface. For the flexible substrate, a one-end part thereof that is positioned on the pressurization part is electrically connected to the pressurization part. The cover member covers the one-end part of the flexible substrate. The heater is positioned on the cover member.

Abstract: A display device includes a display unit, and a control unit that displays a flight route of a flying object flying while photographing surroundings of a crane on the display unit. The control unit is configured to display the crane and the flight route on the display unit, and to display the flight route in a display mode viewed from at least two different directions.

Abstract: There is provided a group III nitride multilayered structure, including: a first layer comprising a group III nitride; a second layer disposed on the first layer and comprising a group III nitride containing In; and a third layer disposed on the second layer and comprising a group III nitride, wherein the first layer contains an impurity that makes the group III nitride electrically highly resistive at least in a near-interfacial region, which is a region with a thickness of 50 nm from an interface between the first layer and the second layer, a concentration of the impurity is lower on a third layer side than on a first layer side interposing the second layer therebetween, and in the third layer, the concentration of the impurity reaches less than 2×1015 cm?3 continuously over a thickness of at least 3 nm, so that the third layer is substantially free of the impurity.

Abstract: A liquid discharge head includes a flow channel member, a pressurization part, a plurality of discharge holes, a flexible substrate, a cover member, and a heater. The flow channel member includes a first surface and a second surface that is positioned on an opposite side of the first surface. The pressurization part is positioned on the first surface. The plurality of discharge holes are positioned on the second surface. For the flexible substrate, a one-end part thereof that is positioned on the pressurization part is electrically connected to the pressurization part. The cover member covers the one-end part of the flexible substrate. The heater is positioned on the cover member.

Abstract: A liquid discharge head includes a flow channel member, a pressurization part, a plurality of discharge holes, a flexible substrate, a cover member, and a heater. The flow channel member includes a first surface and a second surface that is positioned on an opposite side of the first surface. The pressurization part is positioned on the first surface. The plurality of discharge holes are positioned on the second surface. For the flexible substrate, a one-end part thereof that is positioned on the pressurization part is electrically connected to the pressurization part. The cover member covers the one-end part of the flexible substrate. The heater is positioned on the cover member.

Abstract: Provided is a construction machine including a hydraulic system having a hydraulic pump, and a first hydraulic actuator and a second hydraulic actuator which are driven by hydraulic oil supplied from the hydraulic pump. The construction machine includes a first flow rate detector that detects a flow rate of drain hydraulic oil discharged from the first hydraulic actuator, a second flow rate detector that detects a flow rate of drain hydraulic oil discharged from the second hydraulic actuator, and an abnormality determination unit that determines abnormality of the first hydraulic actuator, based on a detection signal from the first flow rate detector, and determines abnormality of the second hydraulic actuator, based on a detection signal from the second flow rate detector. The first flow rate detector and the second flow rate detector each have a moving body.

Abstract: A head unit includes a common passage, at least one recording head, and a joint mechanism. The joint mechanism has a first valve and couples the common passage to the recording head. The first valve includes: a first stopper having a switch member with an insertion hole and an engagement boss projecting from its inner surface, a sliding portion inserted in the insertion hole slidably up and down, and an engagement groove engaged with the engagement boss; and a first sealing member fitted on the first stopper to be in contact with or away from the insertion hole's inner surface. Rotating the switch member to move the first stopper up/down causes the first valve to switch between a closed state, with the first sealing member in contact with the insertion hole's inner surface, and an open state, with the first sealing member away from the insertion hole's inner surface.

Abstract: A liquid discharge head includes a flow channel member, a pressurization part, a plurality of discharge holes, a flexible substrate, a cover member, and a heater. The flow channel member includes a first surface and a second surface that is positioned on an opposite side of the first surface. The pressurization part is positioned on the first surface. The plurality of discharge holes are positioned on the second surface. For the flexible substrate, a one-end part thereof that is positioned on the pressurization part is electrically connected to the pressurization part. The cover member covers the one-end part of the flexible substrate. The heater is positioned on the cover member.

Abstract: An image forming apparatus includes a housing heater, recording heads, a head heater, a head temperature sensor and a controller. The housing heater heats an inside of a housing. The recording heads are stored in the housing and provided for colors of ink. The head heater is provided for each of the recording heads and heats the ink stored in each of the recording heads. The head temperature sensor detects a temperature of each of the recording heads. The controller drives the housing heater until a temperature of the ink estimated based on a detection result of the head temperature sensor reaches a printing permission temperature, and controls a driving of the head heater so as to maintain the printing permission temperature after the temperature of the ink reaches the printing permission temperature.

Abstract: A display device includes a display unit, and a control unit that displays a flight route of a flying object flying while photographing surroundings of a crane on the display unit. The control unit is configured to display the crane and the flight route on the display unit, and to display the flight route in a display mode viewed from at least two different directions.

Abstract: A head unit includes a common passage, at least one recording head, and a joint mechanism. The joint mechanism has a first valve and couples the common passage to the recording head. The first valve includes: a first stopper having a switch member with an insertion hole and an engagement boss projecting from its inner surface, a sliding portion inserted in the insertion hole slidably up and down, and an engagement groove engaged with the engagement boss; and a first sealing member fitted on the first stopper to be in contact with or away from the insertion hole's inner surface. Rotating the switch member to move the first stopper up/down causes the first valve to switch between a closed state, with the first sealing member in contact with the insertion hole's inner surface, and an open state, with the first sealing member away from the insertion hole's inner surface.

Abstract: A head unit includes a recording head, a pipe member, and an ink supply section. The recording head ejects an ink. The pipe member supplies the ink to the recording head. The ink supply section supplies the ink to the pipe member. The ink supply section includes a flow channel in which the ink flows toward one end of the pipe member. The ink supply section includes a heating member located beside the flow channel.

Abstract: A head unit includes a mount (first mount). An inkjet head includes a nozzle for ejecting ink. The mount includes a Z-direction biasing member and a Z-direction positioning member. The Z-direction positioning member positions the inkjet head in an ink ejecting direction (Z (+) direction, lower direction) of the nozzle by holding a sphere to be rotatable, and bringing the sphere into contact with the inkjet head. The Z-direction biasing member biases the inkjet head against the Z-direction positioning member.

Abstract: Provided is a technology capable of improving the quality of a GaN layer that is formed on an underlying substrate. A group III-nitride laminated substrate includes an underlying substrate, a first layer that is formed on the underlying substrate and is made of aluminum nitride, and a second layer that is formed on the first layer and is made of gallium nitride. The second layer has a thickness of 10 ?m or less. A half-value width of (0002) diffraction determined through X-ray rocking curve analysis is 100 seconds or less, and a half-value width of (10-12) diffraction determined through X-ray rocking curve analysis is 200 seconds or less.

Abstract: Provided is a construction machine including a hydraulic system having a hydraulic pump, and a first hydraulic actuator and a second hydraulic actuator which are driven by hydraulic oil supplied from the hydraulic pump. The construction machine includes a first flow rate detector that detects a flow rate of drain hydraulic oil discharged from the first hydraulic actuator, a second flow rate detector that detects a flow rate of drain hydraulic oil discharged from the second hydraulic actuator, and an abnormality determination unit that determines abnormality of the first hydraulic actuator, based on a detection signal from the first flow rate detector, and determines abnormality of the second hydraulic actuator, based on a detection signal from the second flow rate detector. The first flow rate detector and the second flow rate detector each have a moving body.

Abstract: An optical scanning device (30) includes a first elastic member (51) fixed to a bottom wall of a casing (31) and compressed by a lower surface of an image forming lens (36) and the bottom wall to close a gap between the lower surface of the image forming lens (36) and the bottom wall, and a second elastic member (52) fixed to a lid member (37) and compressed by an upper surface of the image forming lens (36) and the lid member (37) to close a gap between the upper surface of the image forming lens (36) and the lid member (37).

Abstract: A head assembly includes a base member, a recording head, a first coupling member, a second coupling member, a first rotating shaft member, and a first angle adjustment mechanism. The first coupling member couples a first end of the recording heads to the base member. The second coupling member couples a second end of the recording head to the base member. The first rotating shaft member functions as a rotating shaft of the recording head. The first angle adjustment rotates the recording head about the first rotating shaft member as a rotation center. The first rotating shaft member is provided for the first coupling member. The first angle adjustment mechanism is provided for the second coupling member.

Abstract: A head assembly includes a base member, a recording head, a first coupling member, a second coupling member, a first rotating shaft member, and a first angle adjustment mechanism. The first coupling member couples a first end of the recording heads to the base member. The second coupling member couples a second end of the recording head to the base member. The first rotating shaft member functions as a rotating shaft of the recording head. The first angle adjustment rotates the recording head about the first rotating shaft member as a rotation center. The first rotating shaft member is provided for the first coupling member. The first angle adjustment mechanism is provided for the second coupling member.