Abstract: The solid titanium catalyst component (I) of the present invention contains titanium, magnesium, halogen, and a cyclic multiple-ester-group-containing compound (a) represented by the following formula (1).

Abstract: A solid titanium catalyst component (I) for olefin polymer production contains titanium, magnesium, halogen, and a cyclic multiple-ester-group-containing compound (a) represented by the formula (1). Preferably, a propylene polymer that is obtained by the olefin polymerization method and has specific thermal properties as determined primarily by differential scanning calorimetry (DSC).

Abstract: A battery holding structure for an electric work vehicle equipped with a battery-driven electric motor includes a plurality of battery cases, a base frame and a plurality of pillars. The battery cases respectively have a bottom wall and front, rear, right and left sidewalls. The battery cases respectively accommodate a plurality of batteries aligned in a lateral direction. The battery cases are stacked in a vertical direction. The battery cases are installed in a rear part of the base frame. The rear sidewalls of respective ones of the battery cases are fixed to the pillars. The pillars are respectively fixed at bottom end portions thereof to a rear end portion of the base frame and extending upwardly.

Abstract: An electrostatic protection element is provided with: a pair of discharge electrodes that are provided on an insulating substrate; and a discharge auxiliary electrode that connects the discharge electrodes to each other so as to link a discharge gap D between the discharge electrodes. The discharge auxiliary electrode has a varistor function with zinc oxide as a main component, and is formed by thick-film printing. The electrostatic protection element is provided with an insulating dome-forming layer with which a cavity portion is formed so as to cover the discharge gap D. The dome-forming layer is formed of glass ceramics, and is coated with a protection layer. The electrostatic protection element is capable of stably achieving a sufficient electrostatic protection function, and has a low electrostatic capacitance and a low discharge start voltage.

Abstract: A magnet roller includes a roller-shaped body constructed of a magnetic field generating material, a first support rod provided to a first axial end of the body; and a second support rod provided to a second axial end of the body. At least one of the first and second support rods is constructed of a nonmagnetic material and includes a projecting part projecting outside the body from an end face of the body and a buried part united to the projecting part and positioned inside the body. The buried part includes a reduced-area portion smaller than a base end of the projecting part adjacent to the buried part in cross-sectional area perpendicular to an axial direction of the first and second support rods.

Abstract: A develop roller includes a magnet roller, and a develop sleeve containing the magnet roller and comprising a plurality of depressions in an elliptic shape regularly arranged with an interval in a longitudinal direction on a surface onto which developer is attracted by a magnetic force of the magnet roller, wherein the depressions are arranged such that a longitudinal direction of the depressions is intersected with the longitudinal direction of the develop sleeve, and a downstream side of the depressions are formed to be deeper than an upstream side in a rotary direction of the develop sleeve.

Abstract: A base frame for an electric work vehicle equipped with a battery-driven electric motor includes a base plate, a plurality of device installation compartment plates and a battery accommodation compartment plate. The device installation compartment plates are fixed onto the base plate, and form a plurality of installation regions for mounting a variety of devices of the vehicle onto the base plate. The battery accommodation compartment plate is fixed onto the base plate, and forms a region for accommodating a plurality of batteries in an inside thereof.

Abstract: A magnet roller includes a magnetic field generator being columnar, a support element being columnar, coaxially provided at both ends of the magnetic field generator, and whose diameter is smaller than that of the magnetic field generator, a level element extending along an axis of the magnetic field generator with a distance from the axis, the distance larger than the diameter of the support element, and a high magnetic power element being a main magnetic pole provided on the level element, extending long along the axis of the magnetic field generator.

Abstract: A battery holding structure for an electric work vehicle equipped with a battery-driven electric motor includes a plurality of battery cases, a base frame and a plurality of pillars. The battery cases respectively have a bottom wall and front, rear, right and left sidewalls. The battery cases respectively accommodate a plurality of batteries aligned in a lateral direction. The battery cases are stacked in a vertical direction. The battery cases are installed in a rear part of the base frame. The rear sidewalls of respective ones of the battery cases are fixed to the pillars. The pillars are respectively fixed at bottom end portions thereof to a rear end portion of the base frame and extending upwardly.

Abstract: A base frame for an electric work vehicle equipped with a battery-driven electric motor includes a base plate, a plurality of device installation compartment plates and a battery accommodation compartment plate. The device installation compartment plates are fixed onto the base plate, and form a plurality of installation regions for mounting a variety of devices of the vehicle onto the base plate. The battery accommodation compartment plate is fixed onto the base plate, and forms a region for accommodating a plurality of batteries in an inside thereof.

Abstract: A magnetic particle carrying device includes a magnetic field generator and a hollow cylindrical structure. The magnetic field generator generates a magnetic field. The hollow cylindrical structure encases the magnetic field generator and attracts magnetic particles on an external surface of the hollow structure using the magnetic field. The external surface of the hollow cylindrical structure is provided with a plurality of elliptical depressions. The depressions include first type depressions and second type depressions. A long axis of a first type of elliptical depression is substantially extending in an axial direction of the hollow cylindrical structure, and a long axis of a second type of elliptical depression is substantially extending in a circumferential direction of the hollow cylindrical structure. The external surface of the hollow cylindrical structure has more elliptical depressions of the second type than elliptical depressions of the first type.

Abstract: A magnet roller includes a roller-shaped body constructed of a magnetic field generating material, a first support rod provided to a first axial end of the body; and a second support rod provided to a second axial end of the body. At least one of the first and second support rods is constructed of a nonmagnetic material and includes a projecting part projecting outside the body from an end face of the body and a buried part united to the projecting part and positioned inside the body. The buried part includes a reduced-area portion smaller than a base end of the projecting part adjacent to the buried part in cross-sectional area perpendicular to an axial direction of the first and second support rods.

Abstract: A reservation, where the number of days from a date of reservation to a date of use exceeds the number of days that correspond to a credit period, is accepted as a reservation where settlement by a credit card is designated while maintaining the safety of settlement of usage fee. When a reservation where the number of days from today to a date of use exceeds the number of days of a credit period is requested, an information processing apparatus checks validity of the designated credit card. At this time, if the designated credit card can be confirmed to be valid, the information processing apparatus accepts the reservation and stores information of the designated credit card in a storage means. The information processing apparatus checks the validity of the designated credit card on or after a date on which the number of days from the date to a date of use of a service whose reservation is accepted is the number of the credit days on the basis of the information stored in the storage means.

Abstract: A magnetic roller includes a solid-core roller having magnetic anisotropy in a direction orthogonal to a central axis thereof. The solid-core roller includes a body part, and shaft parts disposed on both ends of the body part, a concave groove provided in an outer circumference face of the body part to extend in an axial direction, and a magnetic block disposed in the concave groove, the magnetic block having a direction of magnetic anisotropy substantially orthogonal to a direction of the magnetic anisotropy of the magnetic roller.

Abstract: A developing unit includable in a process cartridge and in an image forming apparatus includes a developer bearing member including a magnetic field generator and a nonmagnetic hollow member, a developer container, an agitation/conveyance member, and a developer regulating member. The magnetic field generator has first and second magnetic poles to generate respective magnetic forces for removing the developer from the developer bearing member after the developer passes the development region. A developer-releasing region releases the developer from the developer bearing member using a release force. The developer is disposed higher than a surface of the developer in the developer storing chamber. A component of a magnetic flux density of the magnetic field generated by the magnetic field generator in a direction normal to the developer-releasing region is directed to a same direction as the first and second magnetic poles across the developer-releasing region without forming a local maximum point.

Abstract: There is provided a water treatment pad for a drilling tool capable of being fixed quickly and firmly. The present invention provides a water treatment pad for a drilling tool, which is installed on a drilling surface of an object to be drilled when a hole is drilled in the object by using the rotating drill tool while machining water is supplied. The water treatment pad includes a substantially cylindrical pad body having a drain in the side surface thereof and mounted in a manner that surrounds the drilling tool, and a cylindrical diffuser ring detachably fixed in the pad body in a manner that surrounds the drilling tool to accelerate a fluid therein and release the fluid to the outside. On the end surface of the diffuser ring which comes into contact with the drilling surface, convex-shaped blades the transverse cross section of which has an airfoil profile tilting in the rotative direction of the drilling tool are arranged in an aligned manner.

Abstract: A development roller, including a development sleeve disposed near a photo conductive drum, a magnetic roller disposed in the development sleeve, and a supplying device configured to supply a developer including a toner and a magnetic carrier to the photo conductive drum uniformly, the development sleeve having an outer surface on which the developer including the toner and the magnetic carrier is adsorbed by a magnetic force of the magnetic roller.

Abstract: A developing unit includable in a process cartridge and in an image forming apparatus includes a developer bearing member including a magnetic field generator and a nonmagnetic hollow member, a developer container, an agitation/conveyance member, a developer regulating member to regulate the thickness of a layer of the two-component developer. The magnetic field generator has first and second magnetic poles to generate respective magnetic forces for removing the developer from the developer bearing member after the developer passes the development region. The second magnetic pole generates a magnetic force to attract the developer to form a magnetic brush on the developer bearing member. The developer regulating member includes a magnetic member outwardly disposed on an exterior perimeter surface of the developer bearing member upstream from the developer regulating member, and one planar surface of the magnetic member faces the second magnetic pole across an effective development region.

Abstract: An image forming device comprises a process cartridge. The process cartridge comprises a development roller. The development roller comprises a magnet roller and a developing sleeve 132. The magnet roller is fixed. The depressions 139 each having an oval shape are formed on the external surface of the developing sleeve 132. Both ends of the depressions 139 which are adjacent with each other along the longitudinal direction of the developing sleeve 132 are overlapped with each other and both ends of the depressions 139 which are adjacent with each other along the circumferential direction of the developing sleeve 132 are spaced with each other.