Abstract: A motor includes a cylindrical or substantially cylindrical rotor unit configured to rotate about a rotation axis; a bearing unit arranged to rotatably support the rotor unit; a bearing holder arranged to hold the bearing unit; a disc-shaped or substantially disc-shaped base to which the bearing holder is fixed; a stator unit arranged inside the rotor unit and fixed to the bearing holder; and a circuit board arranged between the base and the stator unit and held by the stator unit. The circuit board is supported on the base through an insulative and flame-retardant vibration-preventing member.

Abstract: A motor includes a cylindrical or substantially cylindrical rotor unit configured to rotate about a rotation axis; a bearing unit arranged to rotatably support the rotor unit; a bearing holder arranged to hold the bearing unit; a disc-shaped or substantially disc-shaped base to which the bearing holder is fixed; a stator unit arranged inside the rotor unit and fixed to the bearing holder; and a circuit board arranged between the base and the stator unit and held by the stator unit. The circuit board is supported on the base through an insulative and flame-retardant vibration-preventing member.

Abstract: An electronic element wafer module according to the present invention is provided, in which a translucent support substrate for covering and protecting a plurality of electronic elements is attached on an electronic element wafer having the plurality of electronic elements formed thereon, and an optical filter is formed corresponding to the electronic elements on at least one surface of the translucent support substrate, where the optical filter is removed to lessen warping along a part or all of dicing lines for individually dividing the electronic element wafer module into a plurality of electronic element modules.

Abstract: An electronic element wafer module according to the present invention is provided, in which a translucent support substrate for covering and protecting a plurality of electronic elements is attached on an electronic element wafer having the plurality of electronic elements formed thereon, and an optical filter is formed corresponding to the electronic elements on at least one surface of the translucent support substrate, where the optical filter is removed to lessen warping along a part or all of dicing lines for individually dividing the electronic element wafer module into a plurality of electronic element modules.

Abstract: A disc driving apparatus has two bases. Both bases swing about their parallel shafts provided at the same side of the bases between positions where the bases chuck a disc-shaped recording medium and positions where they release the medium. A member for rotating the medium is provided for one of the bases, and another member for connecting the medium and the member in order to rotate them together is provided for the other of the bases. The disc driving apparatus also has a pickup for accessing the medium, a chucking mechanism for chucking the medium, a pickup moving mechanism, and a locking mechanism. The pickup can be moved in the radial direction of the medium. The pickup moving mechanism moves the pickup in the radial direction of the medium when the chucking mechanism releases the medium. The locking mechanism locks the movement of the pickup after it is moved to a specified position by the pickup moving mechanism.

Abstract: In a video cassette auto-changer which includes a plurality of reproducing and/or recording devices or VTRs, and a plurality of cassette storage bins arrayed in horizontal and vertical directions and each adapted to store a cassette therein; a cassette transporting apparatus for selectively transporting cassettes between the storage bins and the VTRs comprises fixed horizontal upper and lower guide rails along which upper and lower sliders are movable, a movable guide rail extending vertically between the sliders and pivotally connected to the latter at ends of the movable guide rail, a carriage movable vertically along the movable guide rail, a horizontal drive connected with the sliders for moving the carriage in the direction along the fixed guide rails and a vertical drive for moving the carriage along the movable guide rail.

Abstract: Water-soluble high molecular weight polymers, useful as coagulating agents, are prepared by initiating the polymerization of acrylamide or a monovinyl monomer mixture containing a predominant amount of acrylamide in an acetone-water mixture at a temperature of not lower than 5.degree.C but of lower than 25.degree.C in the presence of polyvinyl alcohol and a catalyst, the concentration of the monomer in the polymerization reaction mixture being 15 to 30 % by weight and the concentration of acetone in the acetone-water mixture being 15 to 35 % by weight, and continuing the polymerization reaction while controlling the viscosity of the reaction system by adding a water-miscible organic solvent having a small chain transfer coefficient to the reaction system with the progress of the polymerization reaction.