Patent application number | Description | Published |
20120155933 | FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME - 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. | 06-21-2012 |
20120177418 | FIXING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME - 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. | 07-12-2012 |
20120230743 | FIXING DEVICE EMPLOYING ELECTROMAGNETIC INDUCTION HEATING SYSTEM CAPABLE OF EFFECTIVELY USING MAGNETIC FLUX AND IMAGE FORMING APPARATUS WITH FIXING DEVICE - 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. | 09-13-2012 |
20130156476 | SLIDE RAIL, AND SHEET FEEDER AND IMAGE FORMING APPARATUS INCLUDING SAME - 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. | 06-20-2013 |
20130334766 | SLIDE RAIL, SHEET FEED DEVICE, AND IMAGE FORMING APPARATUS - 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. | 12-19-2013 |
20130334949 | SLIDE RAIL ASSEMBLY, SHEET FEEDER, AND IMAGE FORMING APPARATUS - 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. | 12-19-2013 |