Abstract: A sound radiation apparatus includes a speaker, a first cover having an opening area provided to be superposed above at least a sound radiation port of the speaker and made up of multiple opening portions at a location superposed above the speaker, a second cover superposed on a front side of the first cover while surrounding the opening area of the first cover, and a saran net covering the first cover and a front side of the second cover and bonded to the second cover, wherein the second cover and the saran net are bonded together at an area on the second member excluding a portion surrounding the opening area of the first cover with a first adhesive and an area on the second cover surrounding the opening area of the first cover with a second adhesive having a higher bonding strength than that of the first adhesive.

Abstract: A keyboard musical instrument of the present invention includes a musical instrument case which is substantially in a box shape and whose front side is open upward, a keyboard section which is arranged in the musical instrument case and exposed to the upper front side of the musical instrument case, a keyboard lid which has a front lid and a rear lid that are foldable and coupled together and openably and closably covers the upper side of the keyboard section, a lid guide section which guides the keyboard lid to be folded and placed near the rear portion of the keyboard section when guiding the keyboard lid to expose the keyboard section upward, a loudspeaker which is arranged in the musical instrument case and positioned behind the keyboard section, and second sound emission holes provided in the upper portion of the musical instrument case.

Abstract: A periphery of a fluid passage (1) extended through a casing (10) is enclosed by a conductive metal layer (5) formed from a non-magnetic material. Four permanent magnets (M1 to M4) are arranged along an outside surface of the inside conductive metal layer (5). The individual permanent magnets (M1 to M4) are closely spaced from each other as defining gaps (G) therebetween. The north poles and the south poles of the magnets are closely spaced from each other at a gap (G) between a first permanent magnet (M1) and a second permanent magnet (M2), and a gap (G) between a third permanent magnet (M3) and a fourth permanent magnet (M4). The permanent magnets (M1 to M4) are totally and solidly enclosed by a magnetic material layer (7).

Abstract: A periphery of a fluid passage (1) extended through a casing (10) is enclosed by a conductive metal layer (5) formed from a non-magnetic material. Four permanent magnets (M1 to M4) are arranged along an outside surface of the inside conductive metal layer (5). The individual permanent magnets (M1 to M4) are closely spaced from each other as defining gaps (G) therebetween. The north poles and the south poles of the magnets are closely spaced from each other at a gap (G) between a first permanent magnet (M1) and a second permanent magnet (M2), and a gap (G) between a third permanent magnet (M3) and a fourth permanent magnet (M4). The permanent magnets (M1 to M4) are totally and solidly enclosed by a magnetic material layer (7).

Abstract: A replaceable unit to be placed in an apparatus, is provided with a relay which includes a latching type switch and outputs a new/used identification signal which indicates whether the replaceable unit is new or used depending on open and closed states of the switch, a detecting part which detects an operating state within the replaceable unit and outputs a state detection signal indicating the operating state, and a single signal line which is used in common for transferring the new/used identification signal and the state detection signal.

Abstract: A composite electromagnetic wave absorber capable of restricting the height of a pyramidal electromagnetic wave absorber and being applied to a compact anechoic chamber, wherein an upper absorber (3) is fabricated by dispersing ferrite powder in a general-purpose resin having a permittivity of not higher than 4.9.

Abstract: A replaceable unit to be placed in an apparatus, is provided with a relay which includes a latching type switch and outputs a new/used identification signal which indicates whether the replaceable unit is new or used depending on open and closed states of the switch, a detecting part which detects an operating state within the replaceable unit and outputs a state detection signal indicating the operating state, and a single signal line which is used in common for transferring the new/used identification signal and the state detection signal.

Abstract: In a display device in which a display material is enclosed in a gap between bonded glass substrates and in a method of manufacturing the same, in order to use a conventional method of scratching the surfaces of the glass substrates to divide them into cells, sodium atoms on the surface of the glass substrate having a thickness of not larger than 2 mm are replaced with atoms having an ion radius larger than that of sodium to form a chemically reinforced layer having a thickness of not larger than 20 &mgr;m. According to this display device and this method of manufacturing the same, the strength of a flat display device used in a portable electric equipment can be easily improved.

Abstract: There is provided a device in an accessory apparatus, which is connected with a main apparatus, for protecting a motor driver IC and a logic circuit in the accessory apparatus from the application of a voltage higher than the rated voltage for these circuits, when the connection between the main apparatus and the accessory apparatus (optional apparatus) which receives power from the main apparatus enters an abnormal state. Therefore, even when the power of the main apparatus is ON, the accessory apparatus can be attached to, or removed from, the main apparatus without damaging the circuits. The device comprises an inexpensive element, such as a rectifying diode or a Zener diode.

Abstract: A display device comprises a pair of opposed soda-lime glass substrates. A chemically reinforced layer having a thickness of 20 &mgr;m or less is disposed on the surface of at least one of the opposing soda-lime glass substrates. An electrode is disposed on opposed surfaces of the soda-lime glass substrates, and a display material is disposed between the pair of opposing soda-lime glass substrates.

Abstract: A transformer and switching regulator that prevents winding's breakdown caused by the leakage magnetic field. A transformer has a core having an air gap, and a winding wound around the core. The turn density of the winding is made least on the air gap. The switching regulator has such a transformer.

Abstract: In a display device in which glass substrates are pasted together and a display material is filled therebetween and a method of manufacturing the same, provided is a display device composed of soda glass chemically strengthened by substituting atoms having an ionic radius larger than that of sodium atoms for sodium atoms on the surfaces of the glass substrates, and a method of manufacturing a display device wherein a chemical strengthening is carried out by dipping a soda glass substrate or a cell for the display device manufactured by using the substrate in a solution or a molten solution of a salt including cations having an ionic radius larger than that of sodium atoms.

Abstract: An image forming apparatus includes a fixing unit having a heat source, a temperature detecting unit for detecting a temperature of the fixing unit, an initial operation necessity detecting unit for determining whether an initial operation should be performed in the image forming apparatus, an initial operation selecting control unit for selecting an initial operation from among a plurality of predetermined initial operations based on the temperature detected by the temperature detecting unit when the initial operation necessity detecting unit detects that the initial operation should be performed, and a control unit for controlling the fixing unit so that the fixing unit performs the initial operation selected by the initial operation selecting control unit.

Abstract: A system capable of suppressing the variation of a conveyance speed of a medium occurring when the rear end of the medium gets away from between a pair of rollers to surely and stably conduct the processing (transfer of a visible image) for the medium in a processing section (a transfer position). Accordingly, this system includes a position detecting section for detecting a position of the medium conveyed, and a control section for, when the position detecting section detects the fact that the rear end of the medium exists at a position immediately before getting away from between resist rollers, executing control so that a medium conveyance speed by the resist rollers becomes equal or substantially equal to a medium conveyance speed by conveyance rollers. This system is applicable to printers including an electrophotographic system.

Abstract: A unit which detects a discharged condition of each of media with a simple and low-cost structure. For this purpose, this unit is designed to output a signal indicative of the passage of the medium, a signal indicative of a full accumulated condition of the media within the medium discharged section and a signal representative of the occurrence of a jam condition of the medium during the passage of the medium. This unit is applicable to printers such as an electrophotographic type printer.

Abstract: An image forming apparatus includes a fixing unit having a heat source, a temperature detecting unit for detecting a temperature of the fixing unit, an initial operation necessity detecting unit for determining whether an initial operation should be performed in the image forming apparatus, an initial operation selecting control unit for selecting an initial operation from among a plurality of predetermined initial operations based on the temperature detected by the temperature detecting unit when the initial operation necessity detecting unit detects that the initial operation should be performed, and a control unit for controlling the fixing unit so that the fixing unit performs the initial operation selected by the initial operation selecting control unit.

Abstract: An improved camshaft and accessory drive arrangement for a V type engine wherein pairs of overhead cams are driven from the crankshaft by means of intermediate shafts that are directly driven by the crankshaft. The axis of rotation of the intermediate shafts is disposed closer to the axis of rotation of the crankshaft than the axes of rotation of the camshafts. An accessory is positioned in the valley of the V and is also driven by the crankshaft but is spaced further from the crankshaft axis of rotation than the intermediate shafts. This accessory is a water pump and an oil pump is also driven by the crankshaft at the same end of the engine.

Abstract: A camshaft drive arrangement for a V type engine having a pair of flexible transmitters that drive intermediate shafts which, in turn, drive respective camshafts associated with the respective cylinder banks. A combined flexible transmitter and guide member is disposed between the flexible transmitters that drive the intermediate shafts for tensioning one of these flexible transmitters and acting as a guide for the other of them.

Abstract: An oral composition which comprises a pharmaceutically acceptable carrier, dextranase and .alpha.-1,3 glucanase, said dextranase being present in an enzyme unit ratio of 1:2 to 2:1 relative to said .alpha.-1,3 glucanase. The oral composition according to the present invention exhibits a synergistic effect of dextranase and .alpha.-1,3 glucanase and is highly effective for not only preventing but also suppressing various oral diseases such as dental caries, gingivitis and alveolar pyorrhea.