Abstract: Disclosed is a film for high heat-sensitive stencil paper, comprising a biaxially oriented film having a thickness of 0.5 to 6.0 .mu.m and formed from a polyester composition comprising polybutylene terephthalate and another polyester,a ratio of the polybutylene terephthalate in the whole polyester being 20 to 80 wt %, a maximum value of average heat shrinkage stresses in the machine and transverse directions of the film measured at a film temperature of 60.degree. to 140.degree. C. being more than 300 g/mm.sup.2, and a heat shrinkage of the film by treatment at 100.degree. C. for 3 minutes being not less than 20%.

Abstract: A film for heat-sensitive stencil paper comprising a biaxially oriented film having a thickness of 0.5 to 6.0 .mu.m and formed from a polyester composition comprising polybutylene terephthalate and at least one other polyester, the content of the polybutylene terephthalate in the polyester composition being 20 to 80 wt %, the polyester composition has one melting point or a plurality of melting points with a difference of less than 10.degree. C. between the highest melting point and the lowest melting point.

Abstract: A biaxially oriented laminated polyester film for magnetic recording media, which has excellent surface uniformity, slittability, running property and cost performance, and in which a magnetic tape produced therefrom shows a very small number of scratches and a very small amount of abrasion dust.

Abstract: In an optical atmospheric communication apparatus for transmitting desired information via an optical beam circulating in the atmosphere, the position of a transmitting object can be easily detected and thus the projecting position of an optical beam can be corrected, even in the case where the optical beam coming from the transmission object cannot be received. The projecting position of the optical beam is displaced within a prescribed range, and the light receiving area of the optical beam reflected at a corner cube reflector is detected in order that the projecting position of the optical beam is corrected based on the centroidal position of the light receiving area.

Abstract: A polyester film having uniform surface and excellent running property and transparency is disclosed. Said polyester film is characterized by containing 0.01-5 wt. % of porous precipitated silica particles which are coagulates of primary particles having an average particle diameter of 0.01-0.1 .mu.m and have a pore volume of 0.05-0.5 ml/g, a specific surface area of 30-150 m.sup.2 /g and an average particle diameter of 0.1-0.5 .mu.m.

Abstract: A biaxially oriented polyester film containing a specific calcium carbonate is described. The calcium carbonate contained in the film is specified by its vaterite form, its average particles size of 0.07 to 1.5 .mu.m, and its particle size distribution ratio of not more than 2.00. The biaxially oriented polyester film containing such specific calcium carbonate is excellent in both the running property and wear resistance, and suitable for the use as a base of magnetic recording media.

Abstract: Disclosed herein is a polyester film containing specific fine spherical silica particles. The film of the present invention is especially suitable as a base film for a magnetic recording medium or dielectric for a capacitor. The films of the present invention have the markedly improved properties such as surface properties, electromagnetic properties, electrical properties, etc. due to the excellent dispersibility of the particles in the film.

Abstract: A biaxially oriented polyester film containing 0.01 to 4 wt % of multilayered high-molecular particles having a weight-average particle size of 0.05 to 3 .mu.m which comprise core crosslinked high-molecular particles having a glass transition temperature of not lower than 100.degree. C. coated with a crosslinked polymer having a glass transition temperature of lower than 100.degree. C., the ratio Dw/Dn of the weight-average particle size (Dw) and the number-average particle size (Dn) being not more than 1.3 is disclosed. The film of the present invention has excellent running property and wear resistance and is useful as a base film for various products such as magnetic recording media, capacitors, photomechanical plates, electric insulators, heat-sensitive transfer film, packaging film, transfer marks and gold and silver threads. Thus, the present invention has a high industrial value.

Abstract: A semiconductor device comprises a first electrode provided on a semiconductor substrate, and constituting a lower wiring layer, an insulating layer provided on the first electrode and the substrate, and a second electrode, which constitutes an upper wiring layer and is connected to the first electrode through a contact hole pierced through the insulating layer. The first electrode includes at least one of high melting point metal layer and high melting point metal silicide layer. The surface of the insulating layer is flattened by heat treatment.

Abstract: A field-effect transistor wherein a gate electrode conductive layer is connected in parallel to a plurality of conductive layers having a lower resistivity than the gate electrode conductive layer, so that the gate resistance is reduced to provide a high power output and a noise reduction.

Abstract: Disclosed herein is a polyester film containing specific fine spherical silica particles. The film of the present invention is especially suitable as a base film for a magnetic recording medium or dielectric for a capacitor. The films of the present invention have the markedly improved properties such as surface properties, electromagnetic properties, electrical properties, etc. due to the excellent dispersibliity of the particles in the film.

Abstract: A read/write head for use in recording and reading data on perpendicular recording media comprising a first elongate magnetic member and a second U-shaped member having a base member and two leg members, said base member being parallel to said elongate member and said leg members being supported by and integral with said base member and extending toward said elongate member, one of said leg members being longer than the other shorter of said leg members, whereby said first elongate magnetic member and said second U-shaped member are secured together with an open gap portion defined between the other shorter leg of said second U-shaped member and said first elongate magnetic member, said gap portion being adapted to be proximate to said recording medium during use of said read/write head,said first elongate member comprising a magnetic member having an elongate layer of magnetic material carried on and extending longitudinally along a face of said first elongate magnetic member and terminating proximate said r

Abstract: A transistor comprising a radiator plate continuous to a base terminal, a plate member made of thermally conductive material, and secured on the radiator plate, a transistor pellet secured on the plate member, a metal lead wire for connecting a base electrode of the transistor pellet to the radiator plate, and a metal lead wire for connecting the upper side of the plate member to the collector terminal.

Abstract: A gate structure of a MOS FET has an oxide layer and an electrode layer sequentially formed on a silicon substrate. In the gate structure, the electrode layer includes a first silicidized high-melting metal layer formed on the oxide layer, a high-melting metal layer formed on the first silicidized high-melting metal layer and a second silicidized high-melting metal layer formed on the high-melting metal layer.

Abstract: A semiconductor device comprises a semiconductor substrate, an insulating layer formed on the substrate, and a fuse deposited on the insulating layer so as to be interposed between two wiring layers. The fuse is prepared from high melting point metal silicide.

Abstract: A field-effect transistor wherein a gate electrode conductive layer is connected in parallel to a plurality of conductive layers having a lower resistivity than the gate electrode conductive layer, so that the gate resistance is reduced to provide a high power output and a noise reduction.

Abstract: An apparatus for dewatering primary dewatered sludge pieces conditioned with dewatering powders comprises: a first member having a recess and a path communicating with the recess, a fluid-tight diaphragm mounted over the recess thereby defining a fluid chamber with which the path communicates, a second member having a filtrate member, and a filter member provided over the filtrate chamber. At least one of the first member and the second member is mounted to bring them into fluid-tight contact with each other, and the primary dewatered sludge pieces into a cavity defined by the diaphragm and the filter member. A pressure fluid then is fed to the fluid chamber, thereby isostatically compressing the primary dewatered sludge pieces to remove the water contained therein without substantially destroying the inner structures of the primary dewatered sludge pieces. Because of this isostatic pressure exerted by the diaphragm, the sludge pieces are compressed highly uniformly, resulting in high dewatering efficiency.

Abstract: Disclosed herein is a polyester composition comprising 0.001-5% by weight of particles which have an average particle size of 0.05-5 micrometers, are mainly composed of calcium carbonate and contain 0.001-5% by weight of at least one compound selected from the group consisting of magnesium compounds, strontium compounds and barium compounds.Also disclosed herein is a process for preparing a polyester film by the electrostatic cooling method, which process is characterized by using the polyester composition of the present invention.

Abstract: A beam splitter comprises a transparent substrate having a refractive index N.sub.S, at least one low refractive index film layer having a refractive index N.sub.L higher than N.sub.S, and at least one high refractive index film layer having a refractive index N.sub.H higher than N.sub.L. The low refractive index film layer and the high refractive index film layer are alternately stacked on the substrate so that the lowermost film layer and the uppermost film layer of the stack are the low refractive index film layer, or the lowermost film layer is the high refractive index film layer and the uppermost film layer is the low refractive index film layer.

Abstract: A graft copolymer is provided which is characterized by excellent gas impermeability, transparency and impact strength, as well as good flowability, and hence good molding workability, by copolymerizing an olefinically unsaturated nitrile with an alkyl vinyl ether in the presence of a rubbery polymer, which contains at least 50% by weight of a conjugated diene; said olefinically unsaturated nitrile being present in an amount of from 60 to 95% by weight, based on the total weight of said olefinically unsaturated nitrile and said alkyl vinyl ether; and wherein said olefinically unsaturated nitrile and said alkyl ether are present in an amount of from 3 to 50 times by weight the quantity of said rubbery polymer.