Abstract: A blood rheology measurement device measures a blood rheology of blood flowing through an artery inside of a living body from outside of the living body. The blood rheology measurement device has a sensor that detects a flow rate of blood flowing through the artery and a pulsatile displacement that varies with an elapse of time. The pulsatile displacement corresponds to a displacement of the artery in a diameter direction thereof due to expansion and contraction of the artery resulting from a pulsatile motion of the heart. A calculating section calculates the blood rheology of blood flowing through the artery on the basis of the blood flow rate and the pulsatile displacement detected by the sensor.

Abstract: An information recording and reproduction apparatus has a magnetic recording medium and a carriage that undergoes rotational movement about a pivot shaft and has a base portion and an arm portion extending from the base portion and along a surface of the medium. A light source that emits a light beam to heat the medium is mounted on the base portion and is disposed closer to the pivot shaft than the arm portion. The arm portion supports a slider confronting the surface of the medium and being configured to receive a light beam from the light source. The slider has an optical system which condenses the light beam and a spot light generating element which generates from the condensed light beam spot light that heats the medium for recording information on the medium while causing magnetization reversal by applying a recording magnetic field to the medium.

Abstract: An information recording and reproduction apparatus has a magnetic recording medium, a light source that outputs a light beam to heat the medium, and a near-field light head confronting a surface of the medium. An optical waveguide introduces a light beam from the light source into the head to generate near-field light. A control section supplies a current to a recording element of the head for generating a recording magnetic field in a direction of the medium. A photoelectric composite wiring line has the optical waveguide and electric wiring lines integral with the optical waveguide. The optical waveguide is arranged between the electric wiring lines. The optical waveguide and the electric wiring line branch off from a distal side of the photoelectric composite wiring line so that the optical waveguide is routed to a base end surface of the near-field light head in a state extending approximately linearly.

Abstract: An information recording and reproduction apparatus has a magnetic recording medium, a light source that outputs a light beam to heat the medium, and a near-field light head confronting a surface of the medium. An optical waveguide introduces a light beam from the light source into the near-field light head to generate near-field light. A control section supplies a current to a recording element of the near-field light head for generating a recording magnetic field in a direction of the medium. A photoelectric composite wiring line has the optical waveguide and at least one electric wiring line integral with the optical waveguide and electrically connecting the near-field light head to the control section. The optical waveguide and the electric wiring line branch off from a distal side of the photoelectric composite wiring line so as to connect to the near-field light head.

Abstract: A head gimbal assembly comprises a slider having reproduction/reproducing elements for reproducing and recording information to/from a surface of a recording medium. A suspension flexibly supports the slider opposite to a surface of a recording medium. A light source is disposed on the suspension for emitting a light beam. An optical waveguide is disposed between the slider and the laser light source for introducing a light beam from the light source into the slider.

Abstract: The present invention relates to an information recording and reproduction apparatus 1 which records the information on a disk D by heating the disk D with near-field light and causing magnetization reversal by applying a recording magnetic field to the disk D. A laser light source 20 is disposed in a base portion 15 of a carriage 11. An optical waveguide which introduces light beam emitted from the laser light source 20 into a slider 2 is provided.

Abstract: The present invention relates to an information recording and reproduction apparatus which records the information on a disk by heating the disk with near-field light and causing magnetization reversal by applying a recording magnetic field to the disk. A photoelectric composite wiring line 33 is provided in which an optical waveguide 32, which introduces light beam emitted from a laser light source into a slider 2, and a plurality of electric wiring lines 31, which electrically connects the slider 2 and a control unit to each other, are integrally formed. The optical waveguide 32 and the electric wiring line 31 branch off at the distal side of the photoelectric composite wiring line 33 to be routed to the slider 2.

Abstract: The present invention relates to an information recording and reproduction apparatus which records the information on a disk by heating the disk with near-field light and causing magnetization reversal by applying a recording magnetic field to the disk. An optical waveguide 32, which introduces light beam emitted from a laser light source into a slider, and a plurality of electric wiring lines 31, which electrically connects the slider and a control unit to each other, are provided. A photoelectric composite wiring line 33 is provided in which the optical waveguide 32 and the plurality of electric wiring line 31 are integrally formed.

Abstract: A blood viscosity measurement device has a flow rate calculating section that calculates a flow rate of blood flowing through a blood vessel of a living body. An inner diameter calculating section calculates an inner diameter of the blood vessel. A blood pressure data acquiring device acquires blood pressure data corresponding to a blood pressure of the blood vessel. A viscosity calculating section calculates a viscosity of the blood flowing through the blood vessel using each of the calculated flow rate, the calculated inner diameter, and the acquired blood pressure data.

Abstract: A blood rheology measurement device and a blood rheology measurement method which detect a fingerprint or a vein to thereby measure a positional relation between an artery in a living body and a sensor on the same conditions for each subject during non-invasive measurement and which correctly evaluate a change of blood rheology with elapse of time. A vein pattern or a fingerprint pattern peculiar to a subject is detected, recognized, and stored, a position of a sensor is adjusted so that the detected vein pattern or fingerprint pattern agrees with the stored vein pattern or fingerprint pattern every measurement, and a blood rheology index value indicating blood fluidity (fluidity/viscosity) is measured.

Abstract: [Problem] To provide a head gimbal assembly with a light guide structure and an information recording/reproducing apparatus which make it possible to reduce a cost of manufacture. [Means for Resolution] A head gimbal assembly 12 with a light guide structure that is included in a rotary member borne to be turnable on a pivot shaft disposed outside magnetic recording media which are rotated in a certain direction. The head gimbal assembly includes a support 40 borne by the rotary member, a slider 2 attached to the distal end of the support so that the slider will be opposed to the surface of a magnetic recording medium, an optical waveguide 32 that is coupled to the slider in order to introduce light, with which the magnetic recording medium is heated, into the slider, a light source 20 that routes a light beam to the optical waveguide, and an electric wiring 31 over which power is fed to the light source and slider, and the light source is disposed on the support.

Abstract: There is disclosed a miniature blood rheology measurement device and a blood rheology measurement method which are capable of performing measurement of a portion such as a wrist or a fingertip with a high precision and which are simple without requiring measurement of a blood pressure. The method: detects an artery blood flow rate, a pulsatile displacement, an artery diameter, an artery wall thickness, a heartbeat frequency, and a phase difference or an amplitude ratio of the blood flow rate and the pulsatile displacement, which change with elapse of time, by use of a sensor including ultrasonic wave transmitting and receiving elements for transmitting and receiving ultrasonic waves between the surface of a living body and an artery blood flow in the living body; and calculates a blood kinematic viscosity by use of one of the phase difference and the amplitude ratio, the blood vessel diameter, and the heartbeat frequency to obtain an index value of a blood rheology.

Abstract: There is disclosed a blood viscosity measurement device which measures a flow rate of blood and a thickness of a blood vessel to determine a viscosity of the blood. The device substitutes the flow rate of the blood, the thickness of the blood vessel, and a blood pressure into a predetermined calculation formula to calculate the viscosity of the blood. The flow rate of the blood is obtained from a change amount of frequency of a continuous ultrasonic wave transmitted to a blood flow and reflected by the blood flow. As to the thickness of the blood vessel, an inner diameter of the blood vessel is obtained from a pulse ultrasonic wave transmitted to the blood vessel and reflected by an inner wall of the blood vessel. On the other hand, a value measured with a general blood pressure gauge is utilized in the blood pressure.

Abstract: A blood rheology measurement device and a blood rheology measurement method which detect a fingerprint or a vein to thereby measure a positional relation between an artery in a living body and a sensor on the same conditions for each subject during non-invasive measurement and which correctly evaluate a change of blood rheology with elapse of time. A vein pattern or a fingerprint pattern peculiar to a subject is detected, recognized, and stored, a position of a sensor is adjusted so that the detected vein pattern or fingerprint pattern agrees with the stored vein pattern or fingerprint pattern every measurement, and a blood rheology index value indicating blood fluidity (fluidity/viscosity) is measured.

Abstract: An electronic equipment has a movable body and a position detecting device having an incremental-type encoder and an incremental-type counter. The position detecting device detects a position of the movable body by setting a starting point of position detection by the incremental-type encoder to a position that the movable body passes through most frequently during movement thereof.

Abstract: In order to ensure that a starting point of the position detection means is not subjected to the influence of noise, etc in electronic equipment equipped with position detection means for detecting the position of a moving body using an incremental type encoder, in electronic equipment for controlling the deciding of a position of a moving body using an ultrasonic motor comprised of piezoelectric material, an oscillating body, a moving body, pressing means, a pair of electrodes for applying a high-frequency voltage to the piezoelectric material, an oscillator drive circuit for generating the high-frequency voltage, and a control unit, a location detected by the incremental type encoder as a position detection starting point is set to be a position most frequently passed through by the moving body or a position decided upon the most frequently as a starting point, with the incremental type counter being reset to zero by a starting point signal of a starting point signal producing circuit.

Abstract: A fine drive unit comprises a suspension arm having a head portion and a support member supporting the suspension arm for undergoing pivotal movement. The support member has a coupling portion connected to the suspension arm, a spring portion connected to the coupling portion, at least one pair of bi-directional cantilevers, and piezoelectric members each disposed on a respective one of the cantilevers. When a voltage having a preselected frequency is applied to the piezoelectric members, the cantilevers are vibrated to cause the cantilevers to contact the suspension arm and thereby finely drive the head portion.

Abstract: A piezoelectric actuator has a rotational moving member and a supporting member disposed opposite to the rotational moving member and having cantilever portions. Each of the cantilever portions of the supporting member has a fixed end and a free end opposite to the fixed end for contacting the rotational moving member when the supporting member is oscillated. A piezoelectric member is disposed on a respective one of the cantilevers of the supporting member. A power source supplies a voltage to each of the piezoelectric members to oscillate the supporting member in a vibration mode higher than a secondary mode of vibration so that the free ends of the cantilevers make sufficient contact with the rotational moving member to thereby rotate the rotational moving member.

Abstract: In a small rotary actuator having a rotor and a plurality of oscillators, each having a piezoelectric element that is excited by application of energy thereto so that the piezoelectric element oscillates at a resonance frequency thereof, the resonance frequency of the respective oscillators varies to some degree. This variation reduces the efficiency of rotation of the rotor. In order to reduce this variation, one or more of the piezoelectric elements of the oscillators is etched so that its resonance frequency is increased to match the resonance frequency of the other oscillators.

Abstract: A piezoelectric actuator has a vibrating member having a generally central portion and a vibratable cantilever extending from the central portion. The cantilever has a first major surface, a second major surface opposite the first major surface, a first end integrally connected to the central portion, and a second free end. A piezoelectric element is connected to the second major surface of the cantilever and is driven by a voltage signal applied thereto to undergo expansion and contraction to vibrationally drive the cantilever. A moving member is in contact with the first major surface of the cantilever to be frictionally driven by vibration of the cantilevers in response to expansion and contraction of the piezoelectric element.