Abstract: The wiring method includes determining wirings based on a condition that one through-hole is formed; picking up a pair of wirings that are disposed on different layers and that need to be electrically connected to each other, from among the determined wirings, and extracting areas occupied by the wirings; making a decision about whether or not there exist areas that coincide with each other between the wirings; making a decision about whether or not the coincident areas have space sufficient enough for setting a through-hole; and setting new other through-hole on the coincident areas.

Abstract: A document binding apparatus is formed to be mounted on an upper surface of a laser beam printer or the like. A paper discharged from the printer is fed to a paper guide, and a paper detecting sensor is turned ON to start the document binding apparatus. The paper is fed to a binding table through a paper lead-in roller, and a paper arranging pusher and a paper arranging rotation brush arrange the paper put on the binding table and an electromotive stapler binds the paper. After the staple process, a paper discharge roller holds the paper and discharges it to a stack tray.

Abstract: A power amplifier has a front and a rear stage. In the rear stage, to a base of a signal-amplifying bipolar transistor is connected one end of a variable impedance element whose impedance changes according to an input power level. An adjusting circuit is connected between the other end of the variable impedance element and a ground. A DC current adjusting element is connected between the other end of the variable impedance element and a supply voltage terminal. The front stage is made to perform class A operation or class AB operation near class A operation, while the rear stage is made to perform class B operation or class AB operation near class B operation. The distortion characteristic of the rear stage is adjusted by the variable impedance element, the adjusting circuit, and the DC current adjusting element so as to offset the distortion characteristic of the front stage.

Abstract: A scroll member for scroll compressor contains a phenol aralkyl resin and a glass fiber and has feature that the dimensional change rate of the member is 0.05% or below under a chemical stability test condition conducted in an atmosphere in which a refrigerant and a refrigerating machine oil coexist at a high temperature and a high pressure, thereby making the resin scroll member practical and chemically stable. The scroll member may further contain a phenol resin and/or glass beads. The scroll member may be formed by a heat treatment having stepwise temperature increase of a molded material from an initial temperature range of 120 to 140° C. to a final temperature range of 170 to 177° C. The heat treatment can be implemented sequentially, e.g., for four hours or more at a temperature range of 120 to 140° C., for four hours or more at a temperature range of 140 to 170° C., and for four hours or more at a temperature range of 170 to 177° C.

Abstract: The amplifier semiconductor element of this invention includes a field effect transistor of which a threshold voltage V.sub.th has a predetermined relationship with an operating voltage.

Abstract: Disclosed are electrolessly plated nickel coatings containing 0.5 to 3.0% by weight of phosphorus and 0.05 to 2.0% by weight of boron, coatings obtained by subjecting to heat treatment electrolessly plated nickel coatings containing 0.5 to 3.0% by weight of phosphorus and 0.05 to 2.0% by weight of boron and machine parts having sliding surfaces wherein at least the sliding surfaces are coated with the coatings. The coatings can be suitably provided on base materials composed of aluminum alloys or the like, show high hardness, high impact strength (high toughness) and improved lubricating characteristics such as sliding characteristics and, in addition, can be formed at a high rate.

Abstract: A flocculant for water treatment containing a highly polymerized silicic acid solution having a high concentration of SiO.sub.2 and an extremely low concentration of alkali metal substance, and a method for producing such flocculant. The silicic acid solution is prepared by treating an aqueous solution of an alkali metal silicate such as water glass to remove alkali metal and allowing the solution to liquefy after once gelling. The flocculant may further contain a water soluble metal salt such as ferric chloride or ferric nitrate.

Abstract: A flocculant for water treatment containing a highly polymerized silicic acid solution having a high concentration of SiO.sub.2 and an extremely low concentration of alkali metal substance, and a method for producing such flocculant. The silicic acid solution is prepared by treating an aqueous solution of an alkali metal silicate such as water glass to remove alkali metal and allowing the solution to liquefy after once gelling. The flocculant may further contain a water soluble metal salt such as ferric chloride or ferric nitrate.

Abstract: The separator comprises an embossed, thin porous sheet of synthetic material and inorganic powder. The embossed pattern consists of a large number, e.g. 200 to 1300 per cm.sup.2, of spherical projections of equal height arranged in vertical and horizontal rows at regular intervals and forming spherical cavities on the opposite side. The projections on one side are shifted from those on the opposite side so that there are alternating rows of projections and cavities on each side. Gas discharging passages are formed by the lines of communicating cavities and valleys between adjacent projections.

Abstract: A method and flocculant for water treatment in which the highly polymerized silicic acid and a water-soluble salt of a metal capable of forming a hydroxide in water such as aluminum are added to the water to be treated. The highly polymerized silicic acid can be prepared by polymerizing water glass. In the case where the highly polymerized silicic acid and the water-soluble metal salt are prepared as a flocculant in the form of aqueous solution before adding to the water to be treated, the flocculant is maintained at a pH value of not less than about 2 or not lower than about 11. The flocculant may be a silicic acid solution of which the gel time is prolonged by being added with a substance capable to generate ferrice ion in the solution so that the flocculant can maintain high aggregation ability after being stored for a long time. The silicic acid solution may be polymerized before being added with such ferric ion generating substance.

Abstract: The present invention resides in an envelope type separator for a storage battery and the manufacturing process thereof. The separator sheet is comprised of a first, microporous paper layer made of an inorganic powder material, a synthetic organic fiber material and an organic binder, and a second, coarse paper layer made of a synthetic organic fiber material and an organic binder, but no inorganic powder material, these layers being bound together by heating. The resultant separator sheet of combination paper type is then formed so that the mutually inward surfaces of the coarse paper layer are brought into contact with each other and are made to adhere to each other, preferably at the edges, by thermal fusion, so that the separator sheet is formed into the shape of an envelope process for making an envelope type separator sheet is also described.

Abstract: The present invention is directed to a method for manufacturing a dampening roll cover useful in a flat-bed printing process, comprised of hygro-thermally shrinkable fibers which do not shrink due to exposure to ambient mositure during storage. Such dampening roll covers are prepared by preliminarily shrinking a cylinder of a fibrous fleece comprised of hygro-thermally shrinkable fibers to the extent of about 3% to about 50% in length to compact the fibrous structure of the cylinder.

Abstract: A storage battery separator comprising a phenol resin, polyolefin resin and inorganic powder, showing restraint of battery over charging and reduced brittleness, is described.

Abstract: A process for producing a storage battery separator including the mixing of at least 10 parts by weight of glass fiber having at least 1 m.sup.2 /g in specific surface area, with a fibril-formed synthetic fiber which is no greater than 350 c.c. in freeness in which the resultant mixture is formed into a sheetlike member suitable for use as a storage battery separator.

Abstract: To manufacture a tubular battery separator with a closed end, a tubular body is formed from a sheet of a separator material with a preponderant content of stretched thermoplastic fibers; the overlapping edges which occur welded together; a disc fitted to the inside diameter inserted from one end into the tubular body to a position near the other end leaving an overhanging edge; the overhanging edge softened by heating, causing it to shrink; and the softened and shrunk edge pressed against the disc so as to join the disc to the tubular body.

Abstract: The present invention provides a process for separating floc in a liquid and for accomplishing the sedimentation of the floc, and provides an apparatus for carrying out the same. In the present invention, a plurality of partition chambers having a narrow gap and being constructed in a square and tubular shape is formed by a plurality of separate plates in the settling tank and a plurality of fins to hit the floc against the fin thereby catching effectively the floc suspended in the mother liquid and separating smoothly and accomplishing the sedimentation of the floc.