Abstract: A clay mixing apparatus includes a mixing chamber, a rotor arranged within the mixing chamber, a drive unit arranged to rotate the rotor, an ejecting unit, a pressure reducing unit; and an exhaust flow path. The rotor includes a shaft rotated by the drive unit, an extruding member and a mixing member. The mixing member includes a plurality of arms and a plurality of blades arranged at tip ends of the arms. The exhaust opening is opposed, in a radial direction about the center axis, to a portion of the mixing member lying near the extruding member and/or a portion of the extruding member lying near the mixing member.

Abstract: A clay mixing apparatus includes a mixing chamber, a rotor arranged within the mixing chamber, a drive unit arranged to rotate the rotor, an ejecting unit, a pressure reducing unit; and an exhaust flow path. The rotor includes a shaft rotated by the drive unit, an extruding member and a mixing member. The mixing member includes a plurality of arms and a plurality of blades arranged at tip ends of the arms. The exhaust opening is opposed, in a radial direction about the center axis, to a portion of the mixing member lying near the extruding member and/or a portion of the extruding member lying near the mixing member.

Abstract: A rotation drive unit having a first reduction mechanism of traction transmission system comprising a drive roller attached to a drive shaft and a driven roller attached to a driven shaft, and a second reduction mechanism of gear transmission system comprising a drive gear attached to the drive shaft and a driven gear attached to the driven shaft. The first reduction mechanism generates a braking effort while making slippage between the rollers during transmission of a rotational driving force from the drive shaft, and exerts a torque load on the second reduction mechanism of the gear transmission system. Since this unit transmits the rotational driving force via the first reduction mechanism while exerting the load upon the second reduction mechanism, it provides a satisfactory and reliable speed-reducing function as well as reliable and accurate transmission of the rotational driving force even if equipped with a plurality of driven shafts coupled to the single drive shaft.

Abstract: A black coating composition comprising a light-screening material and a macromolecular material wherein the light-screening material consists of particles having a multiple particle size distribution has high light-screening properties, is excellent in storage stability, dispersion stability and coating efficiency, and is satisfactory in other characteristics required of the light-screening thin film of a color filter used in a liquid crystal display device or the like.