Abstract: In manufacturing a magnetic tape, a long web of non-magnetic base material is coated with a magnetic layer and, thereafter, subjected to a smoothing process, wherein the surface of the magnetic layer is abraded, ground, and then wiped out. For grinding, sapphire blades are kept in contact with the surface of the magnetic layer with their edges oriented in a transverse direction to the magnetic tape, and are moved back and forth in the transverse direction to the magnetic tape, while the magnetic tape is being conveyed in a lengthwise direction of the magnetic tape. Of the sapphire blades, adjacent two are moved in opposite directions to each other.

Abstract: A ceramic substrate (1) has two side surfaces (64, 65) in a lengthwise direction (X) and two side surfaces (66, 67) in a widthwise direction Y intersecting each other, and is also provided with at least one flat surface (68) in a thicknesswise direction (Z). Internal electrode films (2 to 11) are embedded in the ceramic substrate (1) with film surfaces thereof extending roughly parallel to the flat surface (68) of the ceramic substrate (1). External electrodes (44, 55) are each provided on the flat surface (68) of the ceramic substrate (1) toward one of the two ends of the ceramic substrate (1) in the lengthwise direction (X), are electrically continuous with the internal electrode films (2 to 11) and are formed over distances (d11, d12) and (d21, d22) from the two side surfaces (66, 67) in the widthwise direction (Y).

Abstract: A ceramic substrate having two side surfaces in a lengthwise direction and two side surfaces in a widthwise direction intersecting each other. The ceramic substrate also includes at least one flat surface in a thicknesswise direction. Internal electrode films are embedded in the ceramic substrate with film surfaces thereof extending roughly parallel to the flat surface of the ceramic substrate. External electrodes are each provided on the flat surface of the ceramic substrate toward one of the two ends of the ceramic substrate in the lengthwise direction, are electrically continuous with the internal electrode films and are formed over distances and from the two side surfaces in the widthwise direction.

Abstract: The process for producing an aromatic polycarbonate of the present invention comprises subjecting an aromatic diol compound and a carbonic acid diester to transesterification reaction in the presence of a defoaming agent. In the process of the present invention, it is possible to produce a transparent and colorless aromatic polycarbonate having a high quality, at a high polymerization velocity without occurrence of significant foaming phenomenon.

Abstract: The present invention relates to a ceramic capacitor having metal plate terminals that absorb thermal stress and mechanical stress caused by flexure of the substrate. A ceramic capacitor element is provided with terminal electrodes at the two side end surfaces facing opposite each other. The metal plate terminals are each connected to one of the terminal electrodes at one end thereof, are each provided with a folded portion in a middle area and a terminal portion to be connected to the outside toward the other end from the folded portion.

Abstract: A ceramic substrate (1) has two side surfaces (64, 65) in a lengthwise direction (X) and two side surfaces (66, 67) in a widthwise direction Y intersecting each other, and is also provided with at least one flat surface (68) in a thicknesswise direction (Z). Internal electrode films (2 to 11) are embedded in the ceramic substrate (1) with film surfaces thereof extending roughly parallel to the flat surface (68) of the ceramic substrate (1). External electrodes (44, 55) are each provided on the flat surface (68) of the ceramic substrate (1) toward one of the two ends of the ceramic substrate (1) in the lengthwise direction (X), are electrically continuous with the internal electrode films (2 to 11) and are formed over distances (d11, d12) and (d21, d22) from the two side surfaces (66, 67) in the widthwise direction (Y).

Abstract: An image forming apparatus has first to fourth photoconductor drums, a driving source (i.e, motor), a transmitting member for transmitting power of the driving source to the photoconductor drums to rotate the photoconductor drums (i.e, gears and belts), a first restricting member being rotatably held and being coupled to the first and second photoconductor drums to restrict rotations of the first and second photoconductor drums (i.e, gear), the first restricting member being a member different from the transmitting member and a second restricting member being rotatably held and being coupled to the third and fourth photoconductor drums to restrict rotations of the third and fourth photoconductor drums (i.e, gear), and the second restricting member being a member different from the transmitting member.

Abstract: The present invention relates to a ceramic capacitor having metal plate terminals that absorb thermal stress and mechanical stress caused by flexure of the substrate. A ceramic capacitor element is provided with terminal electrodes at the two side end surfaces facing opposite each other. The metal plate terminals are each connected to one of the terminal electrodes at one end thereof, are each provided with a folded portion in a middle area and a terminal portion to be connected to the outside toward the other end from the folded portion.

Abstract: The present invention relates to a ceramic capacitor having metal plate terminals that absorb thermal stress and mechanical stress caused by flexure of the substrate. A ceramic capacitor element is provided with terminal electrodes at the two side end surfaces facing opposite each other. The metal plate terminals are each connected to one of the terminal electrodes at one end thereof, are each provided with a folded portion in a middle area and a terminal portion to be connected to the outside toward the other end from the folded portion.

Abstract: In order to provide a driving mechanism for a photosensitive drum which is capable of reducing deformation of the shaft of the photosensitive drum caused by loads when transmitting a driving force, a drive transmission course 51 is diverged to at least two courses in a drive transmission system 42 for transmitting the drive force from a drive motor 41 to the photosensitive drum 25. Specifically, the last stage of the drive transmission course 51 is engaged with a passive member 47 provided to the drum shaft 25a at two or more points to connect and link the drive force, thereby diverging the directions of loads to several directions, by which irregular movements of the photosensitive drum or vibration caused by the deformation of the shaft is eliminated.

Abstract: An inductance in a path (R1) from a gate electrode (3G) of a GTO (3) through a gate driver (4) and a node (13) to a cathode electrode (3K) is determined so that a turn-off gain may be not more than 1. At a turn-off, a main current (I.sub.A) is entirely commutated from the gate electrode (3G) towards the node (13) through the gate driver (4) in a direction reverse to a turn-off control current (I.sub.G) A peak voltage suppressing circuit (5) clamps an anode-cathode voltage (V.sub.A-K) which rises on, to a prescribed voltage value for a prescribed time. This prevents losses caused by a snubber circuit. Commutation of a main current to the gate prevents locally concentrating in the cathode side of the semiconductor switching element, to thereby increase the turn off capability of the semiconductor switching element. Further, this prevents or reduces dissipation of large amount produced by a discharge of the electric charges from a snubber capacitor.

Abstract: A fire retardant polyester resin composition comprising (A) 95 to 30 parts by weight of a polyester resin and (B) 5.0 to 70 parts by weight of a polyphenylene ether resin and/or polyphenylene sulfide resin, and, for 100 parts by weight in total of the components (A) and (B), (C) 0.05 to 10 parts by weight of a compatibilizing agent, (D) 2.0 to 45 parts by weight of a phosphoric ester compound or phosphonitrile compound, (E) 0 to 150 parts by weight of a reinforcing filler, (F) 0.001 to 15 parts by weight of an anti-dripping agent, (G) 0 to 45 parts by weight of a melamine cyanurate, and (H) 0 to 15 parts by weight of a polystyrene resin having epoxy group, provided that the amount of the component (G) is from 0.5 to 45 parts by weight for 100 parts by weight in total of the components (A) and (B) when the amount of the component (B) is less than 35 parts by weight. The polyester resin composition scarcely corrodes a metal mold when it is molded, and is excellent in fire retardancy.

Abstract: This invention concerns an image forming apparatus provided with a fixing device for fixing an image formed on a sheet. This apparatus comprises shutters for shielding opening parts formed in the fixing device for the passage of the sheet, a driver for switching the shutters between the opened state and the closed state, a sensor for detecting the presence or absence of the opened state of the shutters, and a CPU for setting the driver moving and controlling the opening or closing motion of the shutters. The CPU compares the signal to open or close the shutters and the signal from the sensor and prohibits the fixing device from producing a fixing motion when the sensor detects the closed state of the shutters in spite of the issuance of a signal to open the shutters.

Abstract: The disclosure describes a flame-retardant polyester resin composition comprising: (1) 100 parts by weight of a polyester resin which may contain a halogen atom;(2) 0.01 to 5 parts by weight of a polyhydric alcohol having not less than 3 hydroxyl groups in the molecule with a hydroxyl group concentration of 1.0.times.10.sup.-2 to 3.5.times.10.sup.-2 eq/g;(3) 0 to 20 parts by weight of an inorganic flame retarding synergist; and(4) 0 to 50 parts by weight of a halogen-based flame retardant,the halogen content in the composition being 0.1 to 20% by weight.

Abstract: Disclosed are an improved vertical-type double diffused MOSFET which has a self-aligned gate structure and field oxide film and a method of fabricating the same. A silicon nitride film is selectively formed and a well region is formed, after which a self-aligned field oxide film is formed on the well region. After removing the silicon nitride film, a self-aligned gate oxide film is formed on an element formation area opposite to the well region. The self-aligned field oxide film overlays the well region. A gate structure has a stable low resistance caused by a desirable definition thereof. While, the self-aligned gate oxide film overlays the element formation area, but which has no overlaying area on the well region and the edge portion of the gate oxide film exists in the vicinity of the edge portion of the well region. The gate oxide film has a few crystal defects thereby reducing the gate short.

Abstract: A method of manufacturing a MOSFET having a p-type gate electrode made of polycrystalline silicon formed through a gate insulating film on a surface of a conductive semiconductor substrate. The gate electrode contains an n-type impurity in addition to a boron impurity. Low threshold voltage can be obtained with less fluctuation. Preferably, the n-type impurity is phosphorus and/or arsenic, and the concentration thereof ranges from 5.times.10.sup.18 to 1.times.10.sup.20 cm.sup.-3. A channel, which is formed in the surface of the gate insulating film side of the substrate, preferably has a positive polarity.

Abstract: In a vertical double-diffused MOSFET comprising a semiconductor substrate of a first conductivity type, an epitaxial layer of the first conductivity type, and a gate insulating layer, a gate electrode coats the gate insulating layer. The gate electrode has a plurality of polygonal shaped opening windows and at least one slit shaped opening window. Each polygonal shaped opening window has a center positioned on each of lattice points of a two-dimensional square lattice comprising a plurality of unit cells. Each slit shaped opening window is laid on a straight line connecting two centers of two polygonal shaped opening windows which are obliquely adjacent to one another. A first insulating layer is formed on an upper surface of the gate electrode. Second insulating layers are formed on side walls of the gate electrode. A base region of a second conductivity type having a base junction depth is formed in the surface of the epitaxial layer.

Abstract: The facsimile machine according to the invention can set a so-called night time collective time designation mode for power saving during night time processing time. Turning on a prescribed operation key of the facsimile machine permits printing. More specifically, even when the machine is in the power saving state, a printing operation is permitted in response to a key input.

Abstract: A vertical double diffused MOSFET includes a gate electrode formed with a plurality of first open windows and at least one second open window connecting two of the first open windows. The first open windows are of a desired polygonal shape and have centers at lattice points of a square lattice provided in a first direction and a second direction orthogonal to the first direction with predetermined interval. The second open window takes in the form of slit having a predetermined width and arranged on a line connecting the center of one first open window to the center of at least one of four other first open windows obliquely adjacent to the one first open window. With the provision of the second open window, the channel width per unit area becomes wider than for a gate electrode having only the first open windows, resulting in a reduced on-resistance.

Abstract: An optical beam scanning apparatus wherein a resin polygonal scanner deflects a light beam radiated from a laser diode as the polygonal scanner is rotating. The polygonal scanner is pressed by a pressing member against a scanner rest which rotates together with a rotary shaft of a motor and thus fixed on the scanner rest. The pressing member has a plurality of tabs, and the polygonal scanner is pressed evenly when the tabs pierce the polygonal scanner.