Abstract: A hard magnetic material contains Co as a main component, at least one element Q of P, C, Si and B, and Sm, and an amorphous phase and a fine crystalline phase. The texture of the hard magnetic material contains 50% by volume or more of fine crystalline phase having an average crystal grain size of 100 nm or less, and has a mixed phase state containing a soft magnetic phase and a hard magnetic phase. Further, anisotropy is imparted to the crystal axis of the hard magnetic phase.

Abstract: A hard magnetic alloy in accordance with the present invention is composed of at least element T selected from the group consisting of Fe, Co and Ni, at least one rare earth element R, and boron (B). The hard magnetic alloy has an absolute value of the temperature coefficient of magnetization of 0.15%/° C. or less and a coercive force of 1 kOe, when being used in a shape causing a permeance factor of 2 or more. A hard magnetic alloy compact in accordance with the present invention has a texture, in which at least a part or all of the texture comprises an amorphous phase or fine crystalline phase having an average crystal grain size of 100 nm or less, is subjected to crystallization or grain growth under stress, such that a mixed phase composed of a soft magnetic or semi-hard magnetic phase and a hard magnetic phase is formed in the texture, and anisotropy is imparted to the crystal axis of the hard magnetic phase.

Abstract: The present invention provides an inductor having a small core loss at a high frequency. The inductor includes a transformer that has a core formed of a base core and a cover core, and a conductive plate sandwiched between the base core and the cover core, as well as a conductive plate sandwiched between the base core and the cover core. The base core is composed of a Mn--Zn ferrite with a mean grain size of 5 .mu.m or less. The transformer has a small core loss at a high frequency band without a decrease in power transmission efficiency.

Abstract: In a stepping motor having a stator provided with an electromagnet and a rotor composed of a hard magnetic alloy, the hard magnetic alloy comprises at least one element T of Fe and Co, at least one element R of rare earth elements and B, has a remanence ratio of at least 0.7, remanent magnetization (Ir) of at least 120 emu/g and coercive force (iHc) of at least 1 kOe and includes a fine crystalline phase having an average crystal grain size of 100 nm or less as a main phase. The hard magnetic alloy is solidified and compacted by making use of a softening phenomenon which arises when the amorphous phase contained in the structure of the hard magnetic alloy is crystallized. A method of manufacturing the hard magnetic alloy used to the stepping motor is also disclosed.

Abstract: A high-frequency composite material, having soft magnetic and dielectric characteristics, comprising a soft magnetic alloy powder represented by the general composition A.sub.a M.sub.b D.sub.c and a synthetic resin, wherein A represents at least one element or mixture thereof selected from the group consisting of Fe, Co and Ni; M represents at least one element or mixture thereof selected from the group consisting of Hf, Zr, W, Ti, V, Nb, Mo, Cr, Mg, Mn, Al, Si, Ca, Sr, Ba, Cu, Ga, Ge, As, Se, Zn, Cd, In, Sn, Sb, Te, Pb, Bi and rare earth elements; D represents at least one element or mixture thereof selected from the group consisting of O, C, N and B; and the suffixes a, b, and c in the general formula A.sub.a M.sub.b D.sub.c satisfy the following equations represented by atomic percent: 40.ltoreq.a<80, 0.ltoreq.b.ltoreq.30, and 0<c.ltoreq.50.

Abstract: An image-reading device comprises a lens unit array comprising an array of distributed refractive index plastic cylindrical lens elements and plastic plates, adhering the distributed refractive index plastic cylindrical lens elements therebetween, and a plastic case containing and holding the lens unit array. The difference in the thermal expansion coefficients of the plates of the lens unit array and the plastic case is 5.0.times.10.sup.-5 cm/cm/.degree. C. or below, or more preferably, 3.0.times.10.sup.-5 cm/cm/.degree. C. or below. The plastic case is formed by connecting, in a longitudinal arrangement, a plurality of case segments formed by an injection molding.

Abstract: Provided is a Rydberg atom impact type ion source in a mass spectrometric apparatus wherein gaseous sample molecule is impinged on Rydberg atom to ionize the sample and thus-ionized sample is subjected to mass spectrometric analysis, said ion source being characterized in that a needle rod-like grid is used in a Rydberg atom generating portion of an ion source block.

Abstract: A metal gasket for sealing a three-component joint structure in which first and second joint members are disposed in confronting relation so as to align their respective holes with each other and in which an outer peripheral portion of a third joint member is fitted in a recess in the confronting surface of the first joint member. The metal gasket has an opening and is adapted to be placed between the first and second joint members so as to align the opening with the holes of the two joint members. The metal gasket also has, at a position near the opening, a stepped portion defined by first and second bends engageable with the first and second joint members, respectively, as the metal gasket is placed between the two joint members. As the first and second joint members are tightened so as to clamp the third member and the metal gasket, the stepped portion is deformed so as to bring the second bend to a position confronting the third joint member.

Abstract: In a method of fabricating an aluminum surface for applying mirror-smooth fabrication to the surface of aluminum or aluminum alloy by combining an electrolytic anode dissolving effect to the surface and a polishing effect of removing the protruded portions of passivated films formed on the surface to be fabricated by lapping with abrasive grains, the voltage between the aluminum material and the tool electrode is set within 2.1.+-.0.3 V, an electrolyte at less than 10% concentration is used as a passivation type electrolyte, the urging pressure of the tool electrode to the surface is set to less than 2.0 kgf/cm.sup.2 and free abrasive grains with the average grain size of less than 1.0 .mu.m are used as the abrasive grains. The temperature of the electrolyte is preferably set to lower than 15.degree. C. The polishing material may comprise non-woven abrasive cloth made of ultrafine fibers.

Abstract: A resistance element manufacturing method which forms on the surface of an electrically insulating base layer including an organic material to be carbonized by irradiation of a laser beam a laser beam transmitting electrically insulating film not carbonized by the irradiation of the laser beam, and irradiates the laser beam on the base layer through the film from one side thereof, thereby carbonizing the irradiated portion of the base layer to form a resistance layer.

Abstract: An optical transmission fiber having improved mechanical strength and suitable for use in optical communication comprising an optical fiber having formed thereover at least one layer of a composition mainly comprising a thermoplastic resin having a functional group, and a method for making the optical transmission fiber.

Abstract: Isoindoline derivatives of the formula ##STR1## and the pharmaceutically acceptable acid addition salts thereof, wherein R represents a moiety selected from the group consisting of hydrogen, halogen, lower alkyl, lower alkoxy, nitro, hydroxy and hydroxy lower alkyl, and n is a positive number from 1 to 3, which R's may be the same or different when n is 2 or 3, and when n is 2, the two R's may be joined to the carbon atom vicinal to the phenyl ring to which the two R's are joined and may taken together form lower alkylenedioxy and the group ##STR2## and R.sub.1 is a member of the group consisting of hydrogen and lower alkyl.The compounds of this invention can be readily prepared by reacting a compound of the formula ##STR3## wherein R represents, in addition to the above defined, alkoxycarbonyloxy; R.sub.1 and n are as defined above; and X is halogen or the groups --O--SO.sub.2 --Y where Y is either lower alkyl or aryl, with isoindoline of the formula ##STR4## or a minemal acid salt thereof.

Abstract: An optical transmission fiber which is formed by applying and baking a liquid resin composition or a solution or a dispersion prepared by dissolving or dispersing in a solvent a liquid or solid resin composition onto a glass fiber for optical transmission and, further, coating thereover by melt extrusion a thermoplastic resin composition.