摘要:
A vibration generator making a closed loop of a magnetic circuit of a permanent magnet to obtain a high vibrating force while kept small in size, including a reciprocating vibrator having a ring-shaped permanent magnet in a center hole of a ring-shaped weight, a first and second plate springs supporting this reciprocating vibrator at a recessed case and end plate to be able to elastically displace in a thickness direction spanning a first and a second end faces, a tubular toroidal coil passing through a center hole of the permanent magnet and generating a reciprocating vibrating magnetic field for reciprocatingly driving the permanent magnet in the thickness direction, and a columnar core passing through this toroidal coil, the ring-shaped permanent magnet being magnetized in the thickness direction, and the toroidal coil having a lower toroidal coil and an adjoining reversely wound series connected upper toroidal coil coaxial with the same.
摘要:
The invention provides a deflection yoke device comprising a main yoke portion 4 for deflecting an electron beam emitted by an electron gun, and a convergence yoke portion 5 for adjusting the convergence of the electron beam. The convergence yoke portion 5 comprises an annular convergence core 53, a convergence horizontal coil 51 wound around both of left and right two regions of the core 53 which intersect a horizontal axis, and a convergence vertical coil 52 wound around both of upper and lower two regions of the core 53 which intersect a vertical axis. Short-circuited coils 54, 54 are provided around the respective left and right two regions of the core 53.
摘要:
There is provided an aluminum alloy sheet material having high strength as well as excellent formability, which consists essentially, by weight percent, of 4.5 to 6% Mg, 0.0005 to 1% rare earth elements, 0.001 to 0.15% Ti, 0.0001 to 0.004% B, 0.05 to 0.2% Fe, 0.05 to 0.1% Si, 0.0001 to 0.03% Be, and the balance of Al and inevitable impurities. The aluminum alloy sheet material may further contain at least one element selected from the group consisting of 0.05 to 0.3% Cu, 0.1 to 1% Zn and 0.05 to 0.2% Mn, if required.
摘要:
[Problem] To provide a magnetic circuit whose size and thickness can be reduced, and which can generate a high sound pressure by a simple structure.[Means for Resolution] A magnetic circuit of the present invention includes a horizontal coil wound in a horizontal direction, and an unitary magnet opposed face-to-face to the horizontal coil, wherein the magnet has a first polarity portion and a second polarity portion located adjacent to the first polarity portion. The first polarity portion and the second polarity portion are magnetized mutually in an opposite direction in a direction of a center axis of the horizontal coil, and the second polarity portion is arranged between one area of the first polarity portion and other area of the first polarity portion in a horizontal plane of the magnet.
摘要:
A stapling section staples a sheet has an opening. The opening has a first open side facing a moving direction of a recording medium moved by the medium moving section and a second open side extending along the moving direction. A shutter is near the second open side in the stapling section. The shutter has a first end axially supported in a freely rotatable manner on an upstream side in the moving direction for arranging the sheet at the stapling position, and a second end portion that hangs down toward the downstream side in the moving direction. When the sheet is not in the stapling section, the second end of the shutter hangs down to block the second open side. When the sheet enters the stapling section through the opening section, the second end of the shutter is pushed up by the axially supported end as the support shaft.
摘要:
A convergence yoke embodying the present invention produces two-pole magnetic field for deflecting the electron beam in a horizontal direction or a vertical direction, and comprises a ring core 1 having a horizontal coil 2 and a vertical coil 3 wound therearound. With the horizontal coil 2 and the vertical coil 3, winding density distribution wherein winding angle &thgr; from each of a horizontal coil reference axis 20 and a vertical coil reference axis 30 is a variable is in proportion to cos2 &thgr;, whereby magnetic field strength distribution becomes more uniform than conventionally.
摘要:
A paper feeding device is usable in an image forming apparatus, and is provided with a paper supplier for supplying a copy paper sheet and a paper inverting portion for inverting the supplied copy paper sheet. The inverting portion has an inner guide surface curved substantially in C-shape. This paper feeding device is simple in construction and assure smooth paper inverting.
摘要:
A flat cathode-ray tube has a tubular glass body comprising a tubular neck portion, a flat funnel portion, a flat box-shaped head portion, an electron gun housed in the neck portion, and a fluorescent screen at the head portion. At least the funnel portion is made entirely of a flat glass plate. A deflection yoke, mounted on the junction of the neck and funnel portions, comprises a core having at its funnel-side end an opening approximately rectangular with substantially straight upper and lower sides and gently outwardly bulging arcuate opposite lateral sides. The core's inner surface, defining an opening, is continuously reducing in size from the funnel side toward the neck portion conforming with the tapered shape of the funnel portion. The yoke further comprises a pair of vertical deflection coils wound around an upper and a lower portion of the core. A pair of horizontal deflection coils, each have horizontal portions extending at least along the opposite sides of the funnel portion. A front-end bridge portion extends from the horizontal portion approximately perpendicular thereto and is positioned on the upper or bottom surface of the funnel portion in a direction perpendicular to the electron beam. The horizontal deflection coils are arranged inside the core at opposite sides symmetrically with respect to a horizontal plane of passage of the beam. At least the horizontal deflection coils have their inner surfaces intimately contacted with the outer surface of the funnel portion.
摘要:
A first folding portion includes: a first folding roller pair consisting of a common roller and a first roller; and a blade member that feeds a sheet to a first nip, thereby forming a first fold on the sheet in the first nip. A second folding portion includes a second folding roller pair consisting of the common roller and a second roller, thereby forming a second fold on the sheet in a second nip. The common roller and the first roller are parallel in a conveying direction in a case where the sheet is guided toward the first folding portion. A feeding portion evacuates the sheet to the evacuation guiding portion for evacuating the sheet that on which the first fold is formed, switches back the sheet, and then feeds the sheet into the second nip.
摘要:
A connection mechanism connecting a sheet feeding unit, supplying a paper to an image forming apparatus, with the image forming apparatus or other sheet feeding unit, the connection mechanism comprising: a connection member disposed on a frame of the sheet feeding unit and rotatably supported on the frame; and an engaging member disposed on the image forming apparatus or the frame of the other sheet feeding unit, wherein: the connection member is rotated between an engaging position where the connection member engages with the engagement member and a retracting position where the connection member disengages with the engaging member and retracts from the engaging position.