摘要:
A spindle motor as a heating element and a spindle head having a spindle that is driven by the spindle motor are coupled to each other by a cooling flange. The cooling flange is provided with a cooling passage, the cross-sectional area of which gradually increases with distance from its gas inlet toward its gas outlet. When a high-pressure gas is injected into the cooling passage through the gas inlet, it is adiabatically expanded and cooled by the cooling passage having the gradually increasing cross-sectional area. Thus, the cooling flange restrains heat generated from the spindle motor from being transmitted to the spindle head.
摘要:
Provided is a cargo transportation box body with a cargo-handling device for cargo unloading or loading, the box body having on its bottom a floor board movable via a cylinder in an antero-posterior direction, and a movable partition wall on the floor board such that, when the movable partition wall is latched, only the floor board is movable, and when allowed to move, the movable partition wall moves in association with the floor board, wherein whether the movable partition wall should be moved synchronously with the floor board or with a divergence relative to the latter is securely selectable, and the movable partition wall maintains a stabilized condition, being safely prevented against lateral swinging fluctuations. A sprocket (3) with projections on its periphery is attached around an axis at the base of the movable partition wall (12) to be rotatable round the axis driven by a reversible motor (47), a first chain (2a) comprising a series of rings has one end fixed to the left (or right) posterior end of the box body (10) and the other end to the right (or left) anterior end of the same body while a second chain (2b) comprising a series of rings has one end fixed to the right (or left) posterior end of the box body (10) and the other side to the left (or right) anterior end of the same body, and the first and second chains (2a), (2b) cross with each other at their mid-portions where resides the sprocket (3) such that the holes of the rings constituting the first and second chains (2a), (2b) engage with the projections of the sprocket (3)
摘要:
A magnetic signal recording method of the present invention superimposes a recording edge of a recordable region on a region where there is substantial equality between (a) a coercive force in a region on a magnetic recording medium in which the coercive force has been varied, and (b) magnetic field intensity, which is generated by a magnetic recording head. The magnetic field intensity has a magnetic field distribution whose lowering rate in an in-track position is maximum in the region. The magnetic recording head, whose recording magnetic field is distributed in a rectangular shape, is used in this way so as to form a magnetic bit having a rectangular shape that is suitable for reproduction performed by a common reproduction head having a rectangular reproduction region, thereby improving an S/N of a reproduction signal dramatically.
摘要:
A spindle motor as a heating element and a spindle head having a spindle that is driven by the spindle motor are coupled to each other by a cooling flange. The cooling flange is provided with a cooling passage, the cross-sectional area of which gradually increases with distance from its gas inlet toward its gas outlet. When a high-pressure gas is injected into the cooling passage through the gas inlet, it is adiabatically expanded and cooled by the cooling passage having the gradually increasing cross-sectional area. Thus, the cooling flange restrains heat generated from the spindle motor from being transmitted to the spindle head.
摘要:
A composite magnetic head device includes a recording head and a reproducing head for magnetically recording and reproducing information on and from a recording medium, and further includes heat sources for heating the recording medium when recording and reproducing. As the heat sources, diffraction grating patterns for the recording head and the reproducing head are formed independently. With this structure, when recording and reproducing information based on the thermal distribution of the recording medium heated by the heat sources, the thermal damage on the recording medium can be suppressed, and the likelihood of such problem that the recording medium is heated too much and the information recorded in the heated portion are erased can be prevented.
摘要:
A carrying and loading/unloading apparatus including a slide plate adapted to reciprocally move on a bottom plate such as that of a truck bed, a partition plate provided on the slide plate and the partition plate side ends securable to right and left bed side plates of the truck so that only the slide plate is moved when the partition plate is secured to the bed side plates as the slide plate moves forward and so that the partition plate moves together with the slide plate when the partition plate is released from the bed side plates as the slide plates moves rearward.
摘要:
The present invention is a magnetic signal reproducing device for reproducing information from a magnetic recording medium in which a polarity of magnetization is inverted at a first temperature during temperature change. The device includes local temperature raising device for locally raising the temperature of the magnetic recording medium, and reproducing device for magnetically detecting information recorded on the magnetic recording medium. In the device, during a reproducing operation, the local temperature raising device forms an area having a lower temperature than the first temperature and an area having a higher temperature than the first temperature within an area in the magnetic recording medium, thereby reducing contribution to reproduced signal from magnetization of an area other than a reproduction target area.
摘要:
In an optical information recording-reproduction apparatus, a focus servo control circuit generates a focus error signal and a light beam is accurately converged on a surface of an optical disk according to a focus servo control signal based upon the focus error signal. In accordance with the present invention, the focus error signal is compensated by selecting a land section focus offset amount by a switch when land sections are tracked, and it is compensated by selecting a groove section focus offset amount when groove sections are tracked. As a result, since the land sections and the groove sections are controlled by different focus servo control signals, recording and reproducing operations are carried out at the most optimal focusing positions respectively obtainable, thereby making it possible to significantly improve the quality of a reproduced signal.
摘要:
An improvement in the construction of a unit carriage (5), on which an injection unit (4) is mounted in a injection molding machine, the improvement being concerned with simplifying the construction of the unit carriage (5), making easier the removal of a screw and nut (19, 20) of the nozzle touching mechanism (6), preventing the screw (19) from whirling, and making easier continuously detecting actual nozzle touching pressure. In the improved construction, a front supporting portion (11) and a rear supporting portion (12) of the unit carriage are connected by way of a connecting pipe (13); a longitudinal through passage (28) communicating with the connecting pipe is provided to a lower portion of the unit carriage (5); the screw (19) and ball bearing nut (20) of the nozzle touching mechanism (6) are arranged in this portion; the rear end of the screw (19) is supported; an indicator rod (40) is mounted on a backup plate (17) which is moved as the touching pressure is raised; and its movement is indicated in an indicator window (42).