Abstract: A mounting head includes a drive part that moves in a vertical direction to apply a load to an electronic component, a float part supported by the drive part in a vertically movable manner, and a linear motor that applies a vertical upward pressing force to the float part. The linear motor includes a stator fixed on the drive part and a moving member fixed on the float part. The drive part moves downward in the vertical direction to apply the load due to own weight of the float part to the electronic component to mount the electronic component onto the board. The linear motor is driven to control a magnitude of the load applied to the electronic component by applying the vertical upward pressing force to the float part.

Abstract: A method of manufacturing an acrylonitrile fiber bundle includes drawing a fiber bundle with pressurized steam under a pressurized steam atmosphere using a pressurized steam drawing device, wherein the fiber bundle includes a yarn spun from a spinning solution containing an acrylonitrile copolymer, the pressurized steam drawing device has at least two zones of a preheating zone provided on a fiber bundle introduction side and a heating/drawing zone provided on a fiber bundle extraction side, and a sealing zone has a sealing member and separates the two zones.

Abstract: Provided is a display apparatus which has a sufficient luminance even when viewed at a large viewing angle, and which can overcome a problem of color change. The display apparatus is a display apparatus including a display device showing a color change in accordance with viewer's viewing angle, and an anisotropic optical film having a diffusing property changed in accordance with the incident angle of light radiated thereinto. The anisotropic optical film has at least one scattering central axis, and an angle made between the scattering central axis and a direction along which the display device shows a minimum color change is from 20 to 65°, or ?20 to ?65°.

Abstract: Provided is a display apparatus which has a sufficient luminance even when viewed at a large viewing angle, and which can overcome a problem of color change. The display apparatus is a display apparatus including a display device showing a color change in accordance with viewer's viewing angle, and an anisotropic optical film having a diffusing property changed in accordance with the incident angle of light radiated thereinto. The anisotropic optical film has at least one scattering central axis, and an angle made between the scattering central axis and a direction along which the display device shows a minimum color change is from 20 to 65°, or ?20 to ?65°.

Abstract: An object of the present invention is to provide a clay dispersion liquid which is capable of obtaining a clay film which realizes compatibility between heat resistance and water resistance, and a method for producing the same; a clay film and a transparent material, produced from the lay dispersion. The clay dispersion liquid of the present invention contains a liquid containing water as a main component, and a tetraphenylphosphonium-modified clay. The clay film and the transparent material of the present invention are obtained by applying the clay dispersion liquid on a surface of a supporting body to form a film.

Abstract: To provide a means for achieving sufficient sealing performance even in the case of using a highly heat resistant clay film in a high temperature environment exceeding 600° C., minimizing deterioration thereof caused by structural change even in a high temperature environment exceeding 600° C. in the presence of water, and preventing decline in the function of the product caused by the elution of sodium. A member containing a clay film which contains aligned clay particles in the structure thereof and contains, among the clay particles and/or among clay particle layers, a substance decomposing at temperatures, exceeding 100° C. but not exceeding the temperature allowing the release, as water, of structural hydroxyl groups in the clay particles, wherein the member is to be employed in an environment of equal or higher temperatures than the decomposition temperature of the aforesaid substance.