Abstract: A polishing sheet includes a sheet including one side having a surface, a plurality of convex portions provided to project from the surface of the one side of the sheet, a plurality of first abrasive grains provided on an upper surface of each of the convex portions, and a plurality of second abrasive grains provided on the surface of the sheet. The second abrasive grains each have hardness higher than that of the first abrasive grains.

Abstract: A polishing sheet includes a sheet including one side having a surface, a plurality of convex portions provided to project from the surface of the one side of the sheet, a plurality of first abrasive grains provided on an upper surface of each of the convex portions, and a plurality of second abrasive grains provided on the surface of the sheet. The second abrasive grains each have hardness higher than that of the first abrasive grains.

Abstract: A fixing device includes a pressurization member pressed against a fixing rotator and a magnetic flux generator disposed opposite the fixing rotator. A heat generator is disposed opposite the magnetic flux generator to generate heat by a magnetic flux generated by the magnetic flux generator. A magnetic shield is movably disposed inside the heat generator to screen the magnetic flux penetrating through the heat generator. A pressure adjuster presses the pressurization member against the fixing rotator with variable pressure. An interlock interlocks the pressurization member with the magnetic shield. The pressure adjuster presses the pressurization member against the fixing rotator with increased pressure to move the magnetic shield via the interlock to a proximate position in proximity to the heat generator and with decreased pressure to move the magnetic shield via the interlock to a remote position being remote from the heat generator.

Abstract: A slide rail assembly includes an inner rail unit, a pair of first and second outer rails, first and second roller mounted to the inner rail unit, and third and fourth rollers mounted to the pair of first and second outer rails. The inner rail unit includes an inner substrate assembly, a pair of first bent portions provided to a first side of the inner substrate assembly, and a pair of second bent portions provided to a second side of the inner substrate assembly. The first outer rail includes a first outer substrate and a pair of third bent portions. The second outer rail includes a second outer substrate and a pair of fourth bent portions. The pair of first and second outer rails is disposed with the pairs of third and fourth bent portions facing inward, and slidable against the inner rail unit.

Abstract: An image forming apparatus includes a sheet feeding device (1). The sheet feeding device (1) includes a sheet feeding cassette (2), a push-up member (4), a drive shaft (5), and a rotation detecting device (6). The rotation detecting device (6) includes an output gear connected to the drive shaft (5). The output gear includes a gear main body provided with a gear tooth on its outer edge; and an electrode holding member that is attached to the gear main body. The electrode holding member is rotatably provided in the case (9) and a rotating electrode is attached to the electrode holding member. The electrode holding member is formed of at least one thermoplastic resin selected from the group consisting of POM, PA, PBT, PP, PE, ABS resin, PS, PPE, PC, and PMMA. The gear main body is formed of a material whose strength is higher than thermoplastic resin of which the electrode holding member is formed.

Abstract: A fixing device includes a pressurization member pressed against a fixing rotator and a magnetic flux generator disposed opposite the fixing rotator. A heat generator is disposed opposite the magnetic flux generator to generate heat by a magnetic flux generated by the magnetic flux generator. A magnetic shield is movably disposed inside the heat generator to screen the magnetic flux penetrating through the heat generator. A pressure adjuster presses the pressurization member against the fixing rotator with variable pressure. An interlock interlocks the pressurization member with the magnetic shield. The pressure adjuster presses the pressurization member against the fixing rotator with increased pressure to move the magnetic shield via the interlock to a proximate position in proximity to the heat generator and with decreased pressure to move the magnetic shield via the interlock to a remote position being remote from the heat generator.

Abstract: A fixing device comprises a fixing member having a heat generation layer, an excitation coil disposed opposite an outer circumferential surface of the fixing member to cause the fixing member to induce electromagnetic heat, and a magnetic core to form a continuous magnetic path guiding a magnetic flux generated by the excitation coil to the fixing member. A holder is provided to accommodate and hold the excitation coil and the magnetic core. A first core included in the magnetic core and is arranged opposite the outer circumferential surface of the fixing member not via the excitation coil along a line extended from an axis of the fixing member in a radius direction. An end face of the first core arranged opposite the outer circumferential surface of the fixing member is substantially perpendicular to the line.

Abstract: A slide rail comprises a fixed rail; a movable rail slidably attached to the fixed rail; and a roller that is attached to at least one of the fixed rail and the movable rail and runs on the other one of the fixed rail and the movable rail as the movable rail slides, the other one of the fixed rail and the movable rail including a running wall on which the roller runs and sliding contact walls that come into sliding contact with opposite side surfaces, in a direction of a rotation axis of the roller, of the roller, wherein the roller includes a metal-made roller main body and a pair of resin-made sliding plates that sandwich the roller main body from opposite sides thereof in the direction of the rotation axis of the roller, and the pair of sliding plates are in sliding contact with the sliding contact walls.

Abstract: An induction heating-type fixing device includes a fixing member, an excitation coil, a magnetic core, a holder, and a pressing member. The fixing member includes a heat generating layer to heat and fuse a toner image on a recording medium. The excitation coil wound a predetermined number of times is disposed facing an outer surface of the fixing member, to generate a magnetic flux relative to the fixing member. The magnetic core forms a continuous magnetic path to direct the magnetic flux generated by the excitation coil to the fixing member. The holder holds the excitation coil and the magnetic core. The pressing member is disposed opposite the fixing member to press against the fixing member and form a fixing nip between the fixing member and the pressing member through which the recording medium is conveyed. The magnetic core is exposed from the holder at the fixing member side.

Abstract: A slide rail includes an outer rail including a first rail board and a pair of rims projecting from the first rail board, forming first grooves, an inner rail inserted between the first grooves and including a second rail board narrower than the first rail board and a pair of rims projecting from the second rail board, forming second grooves, a large-diameter roller held between the first grooves and attached to a leading side of the second rail board in a direction in which the inner rail is inserted, and a small-diameter roller held between the second grooves and attached to a leading side of the first rail board in a direction in which the inner rail is drawn out. The first and second rail boards include protruding portions extending along the long side and protruding outward.

Abstract: A slide rail comprises a fixed rail; a movable rail slidably attached to the fixed rail; and a roller that is attached to at least one of the fixed rail and the movable rail and runs on the other one of the fixed rail and the movable rail as the movable rail slides, the other one of the fixed rail and the movable rail including a running wall on which the roller runs and sliding contact walls that come into sliding contact with opposite side surfaces, in a direction of a rotation axis of the roller, of the roller, wherein the roller includes a metal-made roller main body and a pair of resin-made sliding plates that sandwich the roller main body from opposite sides thereof in the direction of the rotation axis of the roller, and the pair of sliding plates are in sliding contact with the sliding contact walls.

Abstract: A slide rail includes a fixed rail, an intermediate rail a movable rail, and a first to fourth rollers. Use of three rails makes a total length of the slide rail shorter to provide a compact slide rail. The fixed rail includes a rectangular-shaped first plate and a pair of first bent parts; the intermediate rail includes a rectangular-shaped second plate opposed to the first plate and a pair of second bent parts; and the movable rail includes a rectangular-shaped third plate opposed to the second plate and a pair of third bent parts. Among the bent parts, the third bent parts are bent in a direction opposite that of the first and second bent parts.

Abstract: A fixing device includes an induction heater disposed opposite a heating rotary body and including a first side core disposed at one end of the induction heater, a second side core disposed at another end of the induction heater in a direction of rotation of the heating rotary body, and a plurality of arch cores arranged in an axial direction of the heating rotary body. Each arch core includes a first vault edge face disposed at one end of the arch core in the direction of rotation of the heating rotary body and contacting a planar face of the first side core and a second vault edge face disposed at another end of the arch core in the direction of rotation of the heating rotary body and contacting a planar face of the second side core.

Abstract: A slide rail assembly includes an inner rail unit, a pair of first and second outer rails, first and second roller mounted to the inner rail unit, and third and fourth rollers mounted to the pair of first and second outer rails. The inner rail unit includes an inner substrate assembly, a pair of first bent portions provided to a first side of the inner substrate assembly, and a pair of second bent portions provided to a second side of the inner substrate assembly. The first outer rail includes a first outer substrate and a pair of third bent portions. The second outer rail includes a second outer substrate and a pair of fourth bent portions. The pair of first and second outer rails is disposed with the pairs of third and fourth bent portions facing inward, and slidable against the inner rail unit.

Abstract: A slide rail includes a fixed rail, an intermediate rail a movable rail, and a first to fourth rollers. Use of three rails makes a total length of the slide rail shorter to provide a compact slide rail. The fixed rail includes a rectangular-shaped first plate and a pair of first bent parts; the intermediate rail includes a rectangular-shaped second plate opposed to the first plate and a pair of second bent parts; and the movable rail includes a rectangular-shaped third plate opposed to the second plate and a pair of third bent parts. Among the bent parts, the third bent parts are bent in a direction opposite that of the first and second bent parts.

Abstract: A slide rail includes an outer rail including a first rail board and a pair of rims projecting from the first rail board, forming first grooves, an inner rail inserted between the first grooves and including a second rail board narrower than the first rail board and a pair of rims projecting from the second rail board, forming second grooves, a large-diameter roller held between the first grooves and attached to a leading side of the second rail board in a direction in which the inner rail is inserted, and a small-diameter roller held between the second grooves and attached to a leading side of the first rail board in a direction in which the inner rail is drawn out. The first and second rail boards include protruding portions extending along the long side and protruding outward.

Abstract: A driving force transmitting device comprising: an output shaft which can output a rotating force, and a casing which supports the output shaft so that a leading tip part of the output shaft can expose the outside, wherein the output shaft is provided on the casing so that the tip end surface thereof is flash with or substantially flash with an outer surface of the casing or the tip end surface thereof is recessed interior of the outer surface, and wherein the tip end surface thereof is provided with an engaging part which is insertable/removable to/from an engaged part provided on a driven member.

Abstract: A fixing device comprises a fixing member having a heat generation layer, an excitation coil disposed opposite an outer circumferential surface of the fixing member to cause the fixing member to induce electromagnetic heat, and a magnetic core to form a continuous magnetic path guiding a magnetic flux generated by the excitation coil to the fixing member. A holder is provided to accommodate and hold the excitation coil and the magnetic core. A first core included in the magnetic core and is arranged opposite the outer circumferential surface of the fixing member not via the excitation coil along a line extended from an axis of the fixing member in a radius direction. An end face of the first core arranged opposite the outer circumferential surface of the fixing member is substantially perpendicular to the line.

Abstract: An induction heating-type fixing device includes a fixing member, an excitation coil, a magnetic core, a holder, and a pressing member. The fixing member includes a heat generating layer to heat and fuse a toner image on a recording medium. The excitation coil wound a predetermined number of times is disposed facing an outer surface of the fixing member, to generate a magnetic flux relative to the fixing member. The magnetic core forms a continuous magnetic path to direct the magnetic flux generated by the excitation coil to the fixing member. The holder holds the excitation coil and the magnetic core. The pressing member is disposed opposite the fixing member to press against the fixing member and form a fixing nip between the fixing member and the pressing member through which the recording medium is conveyed. The magnetic core is exposed from the holder at the fixing member side.

Abstract: A fixing device includes an induction heater disposed opposite a heating rotary body and including a first side core disposed at one end of the induction heater, a second side core disposed at another end of the induction heater in a direction of rotation of the heating rotary body, and a plurality of arch cores arranged in an axial direction of the heating rotary body. Each arch core includes a first vault edge face disposed at one end of the arch core in the direction of rotation of the heating rotary body and contacting a planar face of the first side core and a second vault edge face disposed at another end of the arch core in the direction of rotation of the heating rotary body and contacting a planar face of the second side core.