摘要:
A sample moving apparatus for positioning wafers with high accuracy, which apparatus comprises a fine adjustment actuator having a drive stroke to finely move the wafer, a fine adjustment stage driven by the fine adjustment actuator, a coarse adjustment actuator having a drive stroke to relatively coarsely move the wafer, a coarse adjustment stage driven by the coarse adjustment actuator, and a holder arrangement for attractively holding the wafer onto the wafer bearing surfaces of the respective stages. Upon selective energization of the holder arrangement of the respective stages, the wafer is moved while being attracted to the coarse adjustment stage or while being attracted to the coarse adjustment stage.
摘要:
A vibrating-type driving unit employing a piezo-electric device is provided for conveying an object such as a sheet material. A follower roller is provided to be opposed to the vibrating-type driving unit, and A.C. power is supplied thereto so as to convey the object. In addition, a friction coefficient of surface of the follower roller is selected to be greater than friction coefficient of a driving head of the vibrating-type driving unit. With this selection, it is possible to convey the object efficiently and stably.
摘要:
A magnetic disk system utilizes both of voice coil motor and a piezoelectric element provided on a head supporting arm to precisely position a head to a predetermined position on a disk. The piezoelectric element is built in the distal end portion of the head supporting arm and is restricted in respect of its movement by a resilient mechanism which has low rigidity in the driving direction of the piezoelectric element and high rigidity in the other directions. The resilient mechanism is formed by pairs of doubled parallel leaf springs so arranged that each pair is disposed on either side of the piezoelectric element.
摘要:
A rotary information recording/reproducing apparatus has a carriage rotatable by the first and second driving coils about an axis that moves an information recording/reproducing head radially to an associated recording disk for head positioning relative to the disk. The angle between a line connecting the center of the first driving coil and the center of the carriage pivot shaft and a line connecting the head and the center of the carriage pivot shaft is set to be not greater than 90 degrees while the angle formed between the first and second driving coils about the center of the carriage pivot shaft is within the range of from 100 degrees to 150 degrees, whereby reduction in the size and thickness of the apparatus can be achieved. A magnet-yoke assembly, which is subject to a reaction force, is mounted to a base by sheet springs and reaction-force damping members interposed therebetween so that the magnet-yoke assembly is independent from and infinitesimally rotatable relative to the base. The provision of the two driving coils and the reaction-force damping members effectively prevents the carriage pivot system and the disk spindle from being excited by the reaction force to thereby assure a high-speed and highly-accurate head positioning.
摘要:
A magnetic disk apparatus for recording information on and reproducing information from a magnetic disk with a magnetic head. A magnetic head supporting device includes a slider having the magnetic head mounted thereon, a flexible section supporting the slider, and a supporting section connected to the flexible section. The slider, the flexible section, and the supporting section are integrally formed from a same material. A rotary-type or linear-type positioning mechanism positions the magnetic head at a predetermined radial position of the magnetic disk.
摘要:
Magnetic disk unit 1 is connected to personal computer 400 through recording mode selecting means 2, and recording mode selecting means 2 can select one of 3 recording modes (high reliability, large capacity, and high speed) and magnetic disk unit 1 records information with the recording method selected by recording mode selecting means 2. The controllability of the magnetic disk unit 1 and personal computer 400 is improved significantly by selecting the most suitable recording method according to the characteristics of information to be recorded.
摘要:
A motor control apparatus that drive-controls a motor by an inverter based on each-phase duty command values of PWM and detects each-phase motor currents of the motor by a one-shunt type current detector. The apparatus includes a current detection correcting section that calculates a current detection correction value based on a power-supply voltage of the motor, each-phase duty command values, a back-EMF information of the motor, each-phase motor currents detected by the current detector, arrangement information of the PWM, and electric characteristic formula of the motor, thereby to correct the each-phase motor currents detected by the current detector to a motor average current by the current detection correction value and drive-controls the motor.
摘要:
An image display control device calculates a lighting luminance after reduction in luminance and an image correction coefficient by real-time calculations of a common calculator. The common calculator is controlled by microcodes stored in a code table. When correcting an image, chroma correction is enhanced to suppress a decrease in chroma due reduction in luminance, and a flicker is prevented by series infinite impulse response (IIR) filtering processes. When the image has a low average luminance but has a high chroma, a decrease in chroma is suppressed by limiting a reduction in lighting luminance.
摘要:
The white light-emitting organic EL device of the present invention comprises: an anode, a cathode, at least a red light-emitting layer, a blue light-emitting layer and a green light-emitting layer provided between the anode and the cathode, and an intermediate layer between any two adjacent layers of the respective light-emitting layers, wherein, when CIE chromaticity coordinates of a dopant incorporated into the red light-emitting layer are represented by (xR, yR), CIE chromaticity coordinates of a dopant incorporated into the blue light-emitting layer are represented by (xB, yB), CIE chromaticity coordinates of a dopant incorporated into the green light-emitting layer are represented by (xG, yG), and target CIE chromaticity coordinates of white light emitted from the device are represented by (xt, yt), Δy represented as a difference between yR and yB, and Δx represented as a difference between xG and xt satisfy the following relationships: Δy≦0.18 Δx≦0.10.
摘要:
The invention provides a pseudoglycolipid effective for cancer treatment and the like and a novel synthesis intermediate therefor, as well as a medicament containing the pseudoglycolipid and the like. The inventive compound is represented by the formula (1), or a salt thereof, wherein each symbol is as defined in the specification.