Abstract: A motor control device includes a DC/DC converter that steps up or steps down a voltage of a direct current power source and performs charging, while controlling an inrush current to a smoothing capacitor; a monitor circuit for the output of the DC/DC converter; and a control part that turns the operation of the DC/DC converter on and off, and turns the DC/DC converter off when the monitor circuit has detected an abnormality.

Abstract: A thermal conductivity sheet is provided which is superior all in heat radiating characteristics (thermal conductivity) in the direction of sheet thickness, close-contact with respect to parts to be cooled, and electrical insulation. In a thermal conductivity sheet 1 in which a plurality of highly thermally conductive insulators 3 are dispersed in a matrix insulator 2, the highly thermally conductive insulators 3 are oriented obliquely or erectly in the direction of thickness of the thermal conductivity sheet 1 such that at least one end faces of the highly thermally conductive insulators 3 are exposed to a surface of the matrix insulator 2. Preferably, a ratio of the total sectional area of the highly thermally conductive insulators 3 to the total surface area of the thermal conductivity sheet 1 is set to be equal to or larger than 1%.

Abstract: Disclosed is a shadow mask plate material which consists of an Fe-Ni-based alloy containing iron and nickel as main constituents, has an unrecrystallized texture with a grain size of 10 .mu.m or less, and is excellent in etching characteristics for forming electron beam apertures.

Abstract: A washing/drying machine capable of effecting washing and drying as a continuous process. Washing, rinsing, dehydrating and drying are performed while a rotary basket is retained in a vertical position. After the dehydration the rotary basket is inclined and is rotated on its axis, so that an opening end of the rotary basket is located slightly higher than the horizontal. In this state, hot air for drying is blown into the rotary basket from the opening side.

Abstract: An ultrasonic beam focusing device with a concave surface comprises a cylindrical housing, a circular piezoelectric polymer film curved to have a concave shape relative to an acoustically active surface thereof and having a pair of circular electrodes at two surfaces thereof, for generating an ultrasonic beam focused at a point and for transducing the received ultrasonic beam into electric signals, leads respectively connected to the electrodes, a rigid polyurethane layer formed in tight contact with an electrode inside the housing at the side of an acoustically inactive surface of the piezoelectric polymer film, for absorbing an ultrasonic beam at the side of the acoustically inactive surface and for supporting the piezoelectric polymer film, and an insulating layer formed in contact with an electrode for electrically insulating the electrode.

Abstract: The invention provides a data recording medium comprising: a pair of disc-shaped substrates opposing each other at a distance; a radiation-sensitive recording layer formed on an opposing surface of each of the substrates; a protective layer formed on each of the recording layers; and an adhesive layer which fills a space defined between the protective layers and which is bonded to the protective layers. The data recording medium of the invention has great mechanical strength, is capable of preventing degradation of the recording layer, is easy to manufacture and is durable over a long period of time.

Abstract: An optical recording element which comprises a heat-resistant organic resin substrate; a recording layer formed on said substrate by thermal deposition or sputtering; and a transparent organic resin protective layer mounted on the recording layer, and wherein the organic resin substrate and organic resin protective layer are thermally fixed under pressure with the recording layer laid between them.

Abstract: An optical recording element which comprises a heat-resistant organic resin substrate; a recording layer formed on said substrate by thermal deposition or sputtering; and a transparent organic resin protective layer mounted on the recording layer, and wherein the organic resin substrate and organic resin protective layer are thermally fixed under pressure with the recording layer laid between them.

Abstract: Disclosed is a method of producing composite piezoelectric materials exhibiting a high flexibility and a high piezoelectric effect, comprising the steps of treating an inorganic dielectric material powder with a latex-containing dispersion so as to coat the surfaces of the powder particles with the rubber particles in a manner to provide encapsulated powder particles, kneading the encapsulated powder particles, shaping the kneaded mass, and polarizing the shaped mass.