Abstract: According to one embodiment, an inkjet head includes a mask part which covers a periphery of an actuator part in a state where a nozzle hole is exposed to outside and a peripheral edge part of which is opposite to an opening peripheral edge part of a frame part at other end while a gap is kept, and the gap between the peripheral edge part of the mask part and the opening peripheral edge part of the frame part at the other end is sealed with a seal agent having thermal insulation properties.

Abstract: A sample analysis device capable of realizing the enhancement of a near-field light while increasing a hotspot areal density is provided. In a sample analysis device, multiple nanostructures are arranged on the surface of a base body. A dielectric body is covered with a metal film in each nanostructure. The nanostructures form multiple nanostructure lines. In each nanostructure line, the nanostructures are arranged at a first pitch SP which is smaller than the wavelength of an excitation light and the nanostructure lines are arranged in parallel with one another at a second pitch LP which is greater than the first pitch SP.

Abstract: Provided are an optical device, a detection apparatus, etc., capable of obtaining a sufficiently large enhanced electric field without utilizing coupling between a localized surface plasmon and a propagating surface plasmon. An optical device includes a substrate, a metal layer formed on the substrate, a dielectric layer formed on the metal layer, and multiple metal nanostructures formed on the dielectric layer. When the thickness of the dielectric layer is denoted by d and the polarizability of the metal nanostructures is denoted by ?, the following formulae are satisfied: d>?1/3/2 and d>40 nm.

Abstract: There is provided a sample analysis element capable of achieving enhancement of the near-field light while increasing the surface density of the hot spots. The sample analysis element is provided with a base body. Nanostructures are dispersed on a surface of the base body at a first pitch SP smaller than a wavelength of incident light. In each of the nanostructures, a dielectric body is covered with a metal film. The nanostructures form a plurality of nanostructure groups. The nanostructure groups are arranged in one direction at a second pitch LP larger than the first pitch SP.

Abstract: There is provided a sample analysis element capable of uniting a propagating surface plasmon resonance with a localized surface plasmon resonance while increasing the surface density of the hot spots. The sample analysis element is provided with a plurality of metal nanobody lines. Each of the metal nanobody lines includes a plurality of metal nanobodies arranged in a line on a dielectric surface at a first pitch smaller than a wavelength of incident light, and the plurality of metal nanobody lines is arranged in parallel to each other at a second pitch larger than the first pitch.

Abstract: An image forming apparatus includes an ink jet head, having a pressure chamber, a flow path and a nozzle, which ejects ink in the pressure chamber through the nozzle, a first tank connected to the flow path, a supply unit which supplies ink in the first tank to the pressure chamber through the flow path, a second tank connected to the flow path, a discharge unit which moves ink in the pressure chamber to the second tank through the flow path, and a control section which activates the supply unit and the discharge unit so that ink in the pressure chamber is discharged to the second tank by the discharge unit, ink in the first tank is charged to the pressure chamber by the supply unit and the liquid surface of ink supplied to the pressure chamber is projected from the nozzle.

Abstract: A planetary gear train is provided with: a carrier; a planetary gear; a planetary pin inserted into an insert hole provided through the planetary gear and coupled to the carrier to rotatably support the planetary gear; a thrust collar attached to a surface opposed to the planetary gear of the carrier so as to surround the planetary pin; and a pin for coupling the thrust collar to the carrier. The thrust collar has a first surface opposed to the carrier and a second surface opposed to the planetary gear, and has a first pin hole provided on the first surface so as not to reach the second surface. The carrier has a second pin hole on a surface opposed to the planetary gear. The thrust collar is attached to the carrier by inserting the pin into the first pin hole of the thrust collar and into the second pin hole of the carrier.

Abstract: According to one embodiment, an inkjet device includes: an inkjet head; an armor section configured to surround the periphery of the inkjet head; a first gap formed over the entire periphery in the peripheral direction in a plurality of the armor sections; and a seal body for forming a surface tension seal by fluid in a second gap arranged in the first gap to form a gap narrower than the first gap.

Abstract: A planetary gear unit including a ring gear, a sun gear provided on an inner circumferential side of the ring gear, at least one planetary gear arranged between the ring gear and the sun gear to mesh with the ring gear and the sun gear, a planetary pin fixed to a carrier and inserted in a shaft hole of the planetary gear, and a slide bearing arranged between the planetary gear and the planetary pin, wherein the slide bearing is formed of a resin material and is provided on an outer periphery of the planetary pin at least in a region where the planetary pin slides relative to the planetary gear.

Abstract: It is intended, with respect to a first floating bush bearing disposed on a compressor housing side and a second floating bush bearing disposed on a turbine housing side, to improve oscillation stability when a turbine rotor revolves at a high speed, reduce the number of parts, and facilitate processing and assemblability. Provided are a bearing housing (13) for a turbocharger (1), a rotor shaft (16) passing through the bearing housing (13), a first floating bush bearing (17) interposed between the bearing housing (13) and the rotor shaft (16) and disposed on a compressor housing (12) side and comprising a first floating bush, and a second floating bush bearing (18) that has the same shape as the first floating bush bearing (17) and is disposed on a turbine housing (11) side and comprises a second floating bush (20). The inner bearing width (Li) of the first and second floating bushes is formed to be smaller than the outer bearing width (Lo) by the same proportion in both bushes.

Abstract: A turbocharger and a method of manufacturing a floating bush with which noise can be reduced, and the rotation speed can be increased. In a turbocharger in which a rotating shaft having a circular cross-section and connecting a turbine rotor and a compressor rotor is supported in a freely rotatable manner, at two axially separated positions via floating bushes, by an inner circumferential surface disposed so as to surround the rotating shaft in a bearing housing, an inner circumferential surface of each of the floating bushes has a non-circular shape in which the curvature of the cross-sectional shape varies in the circumferential direction.

Abstract: An image forming apparatus includes an ink jet head, having a pressure chamber, a flow path and a nozzle, which ejects ink in the pressure chamber through the nozzle, a first tank connected to the flow path, a supply unit which supplies ink in the first tank to the pressure chamber through the flow path, a second tank connected to the flow path, a discharge unit which moves ink in the pressure chamber to the second tank through the flow path, and a control section which activates the supply unit and the discharge unit so that ink in the pressure chamber is discharged to the second tank by the discharge unit, ink in the first tank is charged to the pressure chamber by the supply unit and the liquid surface of ink supplied to the pressure chamber is projected from the nozzle.

Abstract: A planetary bearing structure which does not require forcible oil supply of planetary bearing using slide bearing, and which can reliably supply oil to a sliding surface and lubricate the sliding surface with a simple structure.

Abstract: According to one embodiment, an inkjet head includes a mask part which covers a periphery of an actuator part in a state where a nozzle hole is exposed to outside and a peripheral edge part of which is opposite to an opening peripheral edge part of a frame part at other end while a gap is kept, and the gap between the peripheral edge part of the mask part and the opening peripheral edge part of the frame part at the other end is sealed with a seal agent having thermal insulation properties.

Abstract: It is intended to improve maintainability of a seal structure in a place where the rotation shaft is inserted in the housing. A seal structure of a mechanical device is provided with a housing 18 having an opening in which an input shaft 21 is inserted, a holding plate 41 which is connected to a periphery of the opening of the housing 18 and which has an opening in which the input shaft 21 is inserted, a felt ring 46 which is provided in the holding plate 41 and which seals a space between the holding plate 41 and the input shaft 21, a separable housing 43 which is provided to cover the holding plate 41 and a separable oil seal 45 which seals the space between the holding plate 41 and the input shaft 21 and a space between the cover and the rotation shaft.

Abstract: In a planetary bearing structure equipped with a slide bearing mounted to a shaft hole of a planetary gear, the planetary gear rotating about the outer periphery of a planetary pin fixed to a carrier via the slide bearing, one or a plurality of oil supply grooves are formed in the outer peripheral surface of the planetary pin so as to extend in the axial direction. An oil supply port of a lubricant oil channel opens in the oil supply groove so as to forcedly supply lubricant oil. Furthermore, a discharge groove for trapping foreign matter, which is shallower than the oil supply groove, communicates from the oil supply groove to the wake flow side in the rotating direction of the planetary gear.

Abstract: Provided is a planet bearing structure for a wind turbine generator, capable of reducing the risk of causing seizure or wear in a planet bearing of the wind turbine generator in which a slide bearing is used in a bearing portion, by improving and stabilizing formation of an oil film on a sliding surface having division surfaces. In a planet bearing structure that includes a slide bearing (50A) attached on the inner circumferential surface of a shaft hole of a planet gear constituting a gearbox, and in which the slide bearing (50A) rotates about a planet pin that is secured to a carrier, together with the planet gear, the sliding surface of the slide bearing (50A) has one or more division lines (La) that are formed by axis-wise joint surfaces and that intersect with the rotational direction, and the division lines (La) are formed in an inclined state with respect to the axial direction.

Abstract: An ink jet recording apparatus according to an embodiment of the invention includes an ink jet head having a pressure chamber facing a nozzle, and an upstream port and a downstream port connected to the pressure chamber, a main tank connected to the ink jet head via the upstream port and capable of storing ink therein, and a sub-tank connected to the ink jet head via the downstream port and capable of storing ink, wherein at least when printing by ejecting ink from the nozzle, the relation between ph, r, R and Q is held to satisfy ph?{QR×(1/(1+r))}=Pn (Pn being a constant representing a proper pressure in the nozzle), where ph represents a potential pressure in the main tank as viewed from a surface of an orifice plate where the nozzle of the ink jet head is formed, R represents a total flow path resistance from the main tank to the sub-tank via the ink jet head, a ratio of a flow path resistance from the main tank to the nozzle and a flow path resistance from the nozzle to the sub-tank is expressed by 1:r, a

Abstract: In a bearing oil supply structure for a wind turbine generator provided with a planetary-type planet gear box having a planet gear that rotates about a planet pin fixed to a carrier with a slide bearing interposed therebetween, lubrication of the slide bearing is achieved by supplying lubricant oil by using an oil bath in a lower rotation region and by supplying lubricant oil by injecting lubricant oil pressure-fed from a lubricant oil source through a nozzle in an upper rotation region.

Abstract: According to one embodiment, an inkjet device includes: an inkjet head; an armor section configured to surround the periphery of the inkjet head; a first gap formed over the entire periphery in the peripheral direction in a plurality of the armor sections; and a seal body for forming a surface tension seal by fluid in a second gap arranged in the first gap to form a gap narrower than the first gap.