Abstract: The present invention is aimed at providing a platinum material in which creep strength is elevated by improving a metal grain shape in an oxide-dispersion strengthened platinum material in which zirconium oxide is dispersed, and providing a process for producing the platinum material.

Abstract: A method and apparatus for automatically re-pointing twist drill bits includes a drill support mechanism including means for rotatably and axially translatably holding the shank of a drill bit, and a fluted portion receiver for supporting the fluted front cutting portion of the drill bit. The apparatus also includes an optical sensor unit which views the tip and blade part of the drill bit with the drill support mechanism in an off-line position, i.e., rotated away from a grinding wheel station. Responsive to error correction servo command signals received from a comparison of the actual orientation of drill bit cutting lips with a desired pre-determined template position, rotary and linear actuators in the drill support mechanism rotate the drill bit to the proper angular orientation, and advance the bit axially to a pre-determined protrusion length.

Abstract: In an ultrasonic diagnosis apparatus, the circuitry is divided into two parts, that is, first and second units which are connected with a cable. The first unit includes a trigger signal generation circuit for generating a trigger signal in response to a command signal, an ultrasonic wave transmitting and receiving circuit including a probe for transmitting ultrasonic waves in response to the trigger signal and receiving reflected ultrasonic waves to generate a reception signal. The cable transmits the reception signal and the trigger signal. The second unit includes a clock signal generation circuit for generating a clock signal in response to the trigger signal transmitted through the cable, and a/d converter for a/d converting the received reflected ultrasonic waves in response to the clock signal to output ultrasonic diagnosis data.

Abstract: A thick-film resistor paste consists of a first glass powder, a second glass powder, a conductive material powder, and an organic vehicle. A quantity of the first glass powder mixed is larger than a quantity of the second glass powder mixed. The first glass powder contains, in total, 95 percentage by weight or above of CaO of 20 to 26 percentage by weight, SiO.sub.2 of 37 to 59 percentage by weight, Al.sub.2 O.sub.3 of 5 to 13 percentage by weight and B.sub.2 O.sub.3 of 8 to 28 percentage by weight. The second glass powder contains, in total, 85 percentage by weight or above of SiO.sub.2 of 53 to 72 percentage by weight, B.sub.2 O.sub.3 of 20 to 30 percentage by weight and Na.sub.2 O of 1 to 7 percentage by weight. The thermal expansion coefficient of the first glass powder is larger by 0.5.times.10.sup.-6 /deg or above than the thermal expansion coefficient of the second glass powder.

Abstract: An electrically heatable honeycomb body includes a plurality of passages which are each defined by partition walls made of an electroconductive material and which are substantially parallel to the direction of a gas flowing through the honeycomb body, and two ends which are the gas inlet and outlet sides of honeycomb body, wherein the heat generation of the honeycomb body by electrification is controlled by adjusting the flow of electricity therein and wherein those cells each constituted by a passage and partition walls, present in the vicinity of each current-concentrating portion are formed in such a structure that the stress caused by current concentration can be reduced. This honeycomb body can reduce the stress caused by current concentration and thereby can prevent the rupture of its cells.

Abstract: An apparatus for generating a trigger pulse signal to be used for transmitting an ultrasonic wave includes a reference signal generator for generating a reference signal as a reference to the generation of the trigger pulse signal, a pulse generator for generating the trigger pulse signal after the elapse of a delay time from the reference signal, and a delay time control circuit for controlling the delay time. The delay time control circuit includes a multi-phase clock generator for generating a plurality of clock signals of different phases from each other, a clock selector for selecting one or more of the clock signals, and a pulse generation start circuit for supplying a signal to start the generation of the trigger pulse signal by the pulse generator in accordance with a count derived by counting one of the clock signals selected by the clock selector.

Abstract: An ultrasonic Doppler blood flowmeter has a Doppler scanning mode of operation to obtain information about blood speed and a B mode of operation to obtain information for a tomogram. In order to produce supplementary Doppler shift data for use during a B-mode scanning period, Doppler shift data from a phase detector is treated as complex data, and the difference in argument between two consecutive, complex Doppler shift data is detected. The supplementary Doppler shift data can then be calculated by an arithmetic circuit on the basis of the difference in argument between the consecutive complex Doppler shift data.

Abstract: A thermal head obtained by calcining a mixed material comprising at least ruthenium oxide particles having specific surface area of 10 to 45 m.sup.2 /g and a particle size of 1 .mu.m as the upper limit value of particle size distribution, glass fine particles and a dispersant which disperses these fine particles and disappears by calcining can reduce scattering of resistance values and give high image quality at thermal printing.

Abstract: A thermal head obtained by calcining a mixed material comprising at least ruthenium oxide particles having a specific surface area of 10 to 40 m.sup.2 /g and a particle size of 1 .mu.m as the upper limit value of particle size distribution, glass fine particles and a dispersant which disperses these fine particles and disappears by calcining can reduce scattering of resistance values and give high image quality at thermal printing.

Abstract: By allowing at least the surface of an ink jet recording sheet to contain a cationic fluorescent agent, the waterproofness of water-soluble dyes in inks as well as the brightness of the recording sheet can be enhanced and thereby multicolor images of excellent color reproducibility can be formed on the sheet.

Abstract: An ink jet recording sheet comprising a support and one or more ink receptive layers disposed thereon, which is characterized by being such that the pore radius distribution curve of the uppermost layer shows at least one peak at 0.2 to 10 .mu.m and that of ink receptive layers as a whole shows at least two peaks, one at 0.2 to 10 m.mu. and the other at 0.05 m.mu. or below. Such a sheet brings about many advantages such as a high density and a bright color of the recorded image or letters, a high rate of ink absorption with a minimum of fethering, and the like.

Abstract: In producing a recording paper having, on the surface of a support, a coating layer comprising inorganic pigment and aqueous polymeric binder, a recording paper giving a high color density of image, a clear color tone of image and a high resolution and suitable for multi-color recording was obtained by preparing said coating layer by twice or more repeating a step which comprises coating a coating color prepared by mixing 100 parts by weight of said inorganic pigment containing 50-100 parts by weight of synthetic silica with 2-18 parts by weight of said aqueous polymeric binder in an amount of 2-9 g solid/m.sup.2 per one side of the support by one run of coating procedure and then drying the coating color.

Abstract: A recording paper improved in image quality, comprising a base paper, the pH of its cold water extract being 5.0 to 10.0, and, disposed thereon, a coating layer containing a saponified-type petroleum resin sizing agent.