Abstract: A method for producing an optical fiber includes heating and melting an optical fiber preform and drawing the optical fiber preform. In this method for producing an optical fiber, the optical fiber is formed to include a core, a surrounding cladding surrounding a periphery of the core, and an outer cladding surrounding the surrounding cladding. In the drawn optical fiber, a maximum compressive stress of at least 100 MPa or more is applied to an optical waveguide region including at least the core.

Abstract: Provided is a liquid crystal display device capable of switching between a transparent state and a scattering state, reducing or preventing a decrease in transmittance in the transparent state, and reducing or preventing a decrease in luminance in the panel central portion in the scattering state. The liquid crystal display device includes, sequentially from its viewing surface side toward its back surface side: a first liquid crystal panel; a light source; and a second liquid crystal panel, the first liquid crystal panel including a polymer dispersed liquid crystal containing a polymer network and liquid crystal components, the light source being configured to irradiate a back surface side main surface of the first liquid crystal panel with light from an oblique direction.

Abstract: Provided is a liquid crystal display device capable of switching between a transparent state and a scattering state, reducing or preventing a decrease in transmittance in the transparent state, and reducing or preventing a decrease in luminance in the panel central portion in the scattering state. The liquid crystal display device includes, sequentially from its viewing surface side toward its back surface side: a first liquid crystal panel; a light source; and a second liquid crystal panel, the first liquid crystal panel including a polymer dispersed liquid crystal containing a polymer network and liquid crystal components, the light source being configured to irradiate a back surface side main surface of the first liquid crystal panel with light from an oblique direction.

Abstract: Provided is a liquid crystal display device capable of switching between a transparent state and a scattering state, reducing or preventing a decrease in transmittance in the transparent state, and reducing or preventing a decrease in luminance in the panel central portion in the scattering state. The liquid crystal display device includes, sequentially from its viewing surface side toward its back surface side: a first liquid crystal panel; a light source; and a second liquid crystal panel, the first liquid crystal panel including a polymer dispersed liquid crystal containing a polymer network and liquid crystal components, the light source being configured to irradiate a back surface side main surface of the first liquid crystal panel with light from an oblique direction.

Abstract: Provided is a polymer dispersed liquid crystal display device including: a pair of substrates including an electrode on at least one substrate; and a composite layer disposed between the pair of substrates. The composite layer includes a liquid crystal component and a polymer network constituted by a cured product of a photopolymerizable liquid crystal compound, and is in a transparent state when no voltage is applied and in a scattering state when a voltage is applied, and the polymer network has a helical structure with a number of turns of from one to less than eight in the composite layer.

Abstract: Provided is a liquid crystal display device capable of switching between a transparent state and a scattering state, reducing or preventing a decrease in transmittance in the transparent state, and reducing or preventing a decrease in luminance in the panel central portion in the scattering state. The liquid crystal display device includes, sequentially from its viewing surface side toward its back surface side: a first liquid crystal panel; a light source; and a second liquid crystal panel, the first liquid crystal panel including a polymer dispersed liquid crystal containing a polymer network and liquid crystal components, the light source being configured to irradiate a back surface side main surface of the first liquid crystal panel with light from an oblique direction.

Abstract: Provided is a polymer dispersed liquid crystal display device including: a pair of substrates including an electrode on at least one substrate; and a composite layer disposed between the pair of substrates. The composite layer includes a liquid crystal component and a polymer network constituted by a cured product of a photopolymerizable liquid crystal compound, and is in a transparent state when no voltage is applied and in a scattering state when a voltage is applied, and the polymer network has a helical structure with a number of turns of from one to less than eight in the composite layer.

Abstract: A joint connector, including: a connector housing; a joint terminal; a terminal holder; and a lock arm that is formed in an outer peripheral wall of the connector housing, in which a rear end portion of the terminal holder is provided with convex portions that protrude rearward from a rearmost end edge of the connector housing in a proper assembled state of the terminal holder with respect to the connector housing.

Abstract: A connector which is held on an outer peripheral surface of a wire harness having a connector housing which includes an outer peripheral wall on which a tape is to be peripherally wound, and an outermost surface of the outer peripheral wall of the connector housing is provided with: a plurality of planar outer surfaces, ridge line portions, the ridge line portion is provided with a corner-removed chamfered portion and a non-chamfered portion, and the non-chamfered portion is engaged with a side edge of a tape wound around the outer surfaces so as to be used as a position displacement regulation projection configured to regulate an axial position displacement of the connector housing with respect to the tape.

Abstract: A connector structure includes a bottomed tubular hood formed in a housing, a mating hood formed in a mating housing and fitted inside the bottomed tubular hood, a plate spring member made of metal accommodated in a tube bottom of the bottomed tubular hood, a backlash regulating member provided on an opposite side of the tube bottom across the plate spring member and urged in a direction opposite to a fitting direction of the mating hood by the plate spring member, a mating hood tip end surface formed at a tip end of the mating hood in the fitting direction, and a regulating member abutting surface provided on the backlash regulating member and pressed by the mating hood tip end surface in a fitted state that the housing and the mating housing are fitted.

Abstract: A joint connector, including: a connector housing; a joint terminal; a terminal holder; and a lock arm that is formed in an outer peripheral wall of the connector housing, in which a rear end portion of the terminal holder is provided with convex portions that protrude rearward from a rearmost end edge of the connector housing in a proper assembled state of the terminal holder with respect to the connector housing.

Abstract: A connector which is held on an outer peripheral surface of a wire harness having a connector housing which includes an outer peripheral wall on which a tape is to be peripherally wound, and an outermost surface of the outer peripheral wall of the connector housing is provided with: a plurality of planar outer surfaces, ridge line portions, the ridge line portion is provided with a corner-removed chamfered portion and a non-chamfered portion, and the non-chamfered portion is engaged with a side edge of a tape wound around the outer surfaces so as to be used as a position displacement regulation projection configured to regulate an axial position displacement of the connector housing with respect to the tape.

Abstract: A connector structure includes a bottomed tubular hood formed in a housing, a mating hood formed in a mating housing and fitted inside the hood, a plate spring member made of metal accommodated in a tube bottom of the hood, a backlash regulating member provided on an opposite side of the tube bottom across the plate spring member and urged in a direction opposite to a fitting direction of the mating hood by the plate spring member, a mating hood tip end surface formed at a tip end of the mating hood in the fitting direction, and a regulating member abutting surface provided on the backlash regulating member and pressed by the mating hood tip end surface in a fitted state that the housing and the mating housing are fitted.

Abstract: A hub of this motor includes a hub annular portion being annular and arranged above a stator, and a flange portion arranged to extend radially outward from the hub annular portion, and including an upper surface on which an annular member is arranged. A yoke includes a first yoke cylindrical portion to which a magnet is fixed; a yoke annular portion arranged to extend radially inward from an upper end of the first yoke cylindrical portion, and including an upper surface arranged opposite to a lower surface of the hub; and a second yoke cylindrical portion arranged to extend axially upward from a radially inner end portion of the yoke annular portion. An inner circumferential surface of the hub annular portion and an outer circumferential surface of the second yoke cylindrical portion are fixed to each other at an engagement portion arranged radially inward of a radially inner end portion of each of coils.

Abstract: A circuit board is in the shape of a strip and includes: in one longitudinal end portion thereof, power connection portions connected to an external power supply; in another longitudinal end portion thereof, land portions to which portions of conducting wires drawn out downwardly of a base portion are connected; and pattern portions electrically connected to the power connection portions and the land portions. The land portions include a first land portion, and a second land portion arranged adjacent to the first land portion. The pattern portions include a first pattern portion electrically connected to the first land portion, and a second pattern portion arranged adjacent to the first pattern portion, and electrically connected to the second land portion. The first pattern portion and the second land portion are arranged to overlap with each other when viewed in a widthwise direction of the circuit board.

Abstract: The invention provides a fixation member having a fluororesin tube serving as a release layer which attains both suitable electrical conductivity and high releasability. The fixation member (fixation tube) has a release layer on the surface thereof. The release layer is formed of a fluororesin tube containing carbon. The fluororesin tube has a percent dielectric relaxation of 1.0% to 5.0% or an optical transmission density of 1 to 4. The fluororesin tube preferably has a dielectric constant of 2.15 to 2.5.

Abstract: An object of the invention is to provide a fixation member which has an unfixed toner fixation function and ensures high releasability, low chargeability, and high friction. The fixation member has an elastic layer, and a release layer on the external surface of the elastic layer, wherein the release layer is formed of a fluororesin tube having low chargeability and a percent dielectric relaxation of 15% or higher.

Abstract: A circuit board is in the shape of a strip and includes: in one longitudinal end portion thereof, power connection portions connected to an external power supply; in another longitudinal end portion thereof, land portions to which portions of conducting wires drawn out downwardly of a base portion are connected; and pattern portions electrically connected to the power connection portions and the land portions. The land portions include a first land portion, and a second land portion arranged adjacent to the first land portion. The pattern portions include a first pattern portion electrically connected to the first land portion, and a second pattern portion arranged adjacent to the first pattern portion, and electrically connected to the second land portion. The first pattern portion and the second land portion are arranged to overlap with each other when viewed in a widthwise direction of the circuit board.

Abstract: A hub of this motor includes a hub annular portion being annular and arranged above a stator, and a flange portion arranged to extend radially outward from the hub annular portion, and including an upper surface on which an annular member is arranged. A yoke includes a first yoke cylindrical portion to which a magnet is fixed; a yoke annular portion arranged to extend radially inward from an upper end of the first yoke cylindrical portion, and including an upper surface arranged opposite to a lower surface of the hub; and a second yoke cylindrical portion arranged to extend axially upward from a radially inner end portion of the yoke annular portion. An inner circumferential surface of the hub annular portion and an outer circumferential surface of the second yoke cylindrical portion are fixed to each other at an engagement portion arranged radially inward of a radially inner end portion of each of coils.

Abstract: The invention provides a fixation member having a fluororesin tube serving as a release layer which attains both suitable electrical conductivity and high releasability. The fixation member (fixation tube) has a release layer on the surface thereof. The release layer is formed of a fluororesin tube containing carbon. The fluororesin tube has a percent dielectric relaxation of 1.0% to 5.0% or an optical transmission density of 1 to 4. The fluororesin tube preferably has a dielectric constant of 2.15 to 2.5.