Abstract:
To provide an electronic component mounting system and an electronic component mounting method which can prevent a mounting failure due to positional error in a height direction of a substrate and ensure mounting quality.The electronic component mounting system includes a plurality of electronic component mounting devices connected to one another and mounts an electronic component on a substrate to manufacture a mounting substrate. A print test device for testing the substrate after solder printing measures a height position of a height measurement point set on the upper surface of the substrate 4 by a height measuring machine 22 and outputs a measurement result as substrate height data. In a component placing step using an electronic component placing device, a control parameter for controlling a component placing operation of the placing head 32 is updated. Accordingly, it is possible to correct a variation of the height position of an individual substrate and to prevent a mounting failure due to positional error in the height direction of the substrate.
Abstract:
In supply of feedback data to improve a positional deviation quantity and a deviation state of a soldering paste printed on individual substrates held on the carrier, a plurality of average values of individual positional deviation for each of the individual substrates are obtained, and then, if the deviation value ΔM indicating a difference between the maximum value Mmax and the minimum value Mmin of the plurality of average values M of individual positional deviation is less than or equal to the tolerance value Δ(t), an intermediate value of the maximum value Mmax and the minimum value Mmin is obtained, and the positioning parameters of the mask plate and the carrier are corrected based on the intermediate value (Mmax+Mmin)/2.
Abstract:
The present invention relates to a compound represented by the following formula [I] wherein each symbol is as defined in the specification, or a pharmaceutically acceptable salt thereof, or a solvate thereof, and a pharmaceutical composition, an anti-HIV agent and an HIV integrase inhibitor containing such compound. The compound of the present invention has an HIV integrase inhibitory activity, and is useful as an anti-HIV agent, or as an agent for the prophylaxis or treatment of AIDS. In addition, by the combined use with other anti-HIV agents such as a protease inhibitor, a reverse transcriptase inhibitor and the like, it can be a more effective anti-HIV agent. Because it shows integrase-specific high inhibitory activity, the compound can be a pharmaceutical agent safe on human body, which causes only a fewer side effects.
Abstract:
A method of mounting a component on electrodes on a board. Mounting coordinates for mounting the component are calculated. A determination is made of printing positions where solders for the component is situated on the electrodes. The printing positions of the solders are stored. Mounting position data for where the component is to be mounted on the solders is prepared based on the previous steps. The component is mounted using the information gathered in the previous steps.
Abstract:
A polishing apparatus has a polishing table (12) with a polishing surface (10) attached thereon, and a top ring (20) for pressing a workpiece (W) against the polishing surface (10). The top ring (20) has a housing (40) and a retainer ring (44) vertically movable in the housing (40) for holding an outer circumferential edge of the workpiece (W). The polishing apparatus includes a vertically moving mechanism operable to vertically move the top ring (20), a bracket (28) vertically movable together with the top ring (20), a stopper (32) adjustable in vertical position to prevent downward movement of the bracket (28), and a sensor (36) for detecting a distance between the stopper (32) and the bracket (28). The polishing apparatus also includes a control unit (34) operable to adjust the stopper (32) in vertical position when the retainer ring (44) is brought into contact with the polishing surface (10) while a lower surface of the housing (40) of the top ring (20) is located at a predetermined height from the polishing surface (10) so that the distance between the stopper (32) and the bracket (28) is equal to a difference between a height of the lower surface of the housing (40) from the polishing surface (10) at the time of polishing and the predetermined height.
Abstract:
A pharmaceutical agent having an anti-HIV action, particularly, a pharmaceutical agent having an integrase inhibitory action, is provided. The present invention relates to a quinolizinone compound represented by the following formula [I] wherein each symbol is as defined in the specification, a pharmaceutically acceptable salt thereof, and an anti-HIV agent containing same as an active ingredient. The compound of the present invention has an HIV integrase inhibitory action and is useful as an anti-HIV agent for the prophylaxis or therapy of AIDS. Moreover, by a combined use with other anti-HIV agents such as protease inhibitors, reverse transcriptase inhibitors and the like, the compounds can become a more effective anti-HIV agent. Since the compound has a high inhibitory activity specific for integrases, the compound can provide a safe pharmaceutical agent for human with a fewer side effects.
Abstract:
A method is disclosed for manufacturing bamboo nails. The method includes horizontally laying down small bamboo plates, obtained by cutting a bamboo piece radially from the center axis thereof, in a press. The small bamboo plates are then pressed perpendicularly to the fibers to produce a compressed flat plate. Finally, the compressed flat plate is cut in the shape of a multangular column. Thus the strength of a wooden material is increased.
Abstract:
According to the invention, a compressor having a threaded screw connection portion formed directly on a fitting portion of the housing is provided. Since no through bolt or the like for connecting two-parts of the housing is used, the diameter of the housing can be reduced. However, in a case that a suction port and discharge port do not align with an external mounting structure, a mounting means able to slide on the housing and adjust the positions of mounting brackets at least in the direction of rotation is added.
Abstract:
This invention provides a data processing system capable of performing an interrupt exception handling routine as many times as the number of times of occurrence of a request event for the same interrupt exception handling routine if the request event occurs a plurality of times. A software interrupt counter or a hardware interrupt counter for retaining the number of times of occurrence of an interrupt request generation event counts up when a software processing which generates a software interrupt or a hardware event that generates a hardware interrupt occurs, and counts down when a CPU performs a processing for removing the interrupt request. If the value of the software interrupt counter and the value of the hardware interrupt counter are not zero, a software interrupt request signal and a hardware interrupt request signal to the CPU are asserted.
Abstract:
A polishing apparatus for polishing a surface of a workpiece has a polishing section for polishing a surface of a workpiece, a cleaning section for cleaning a polished surface of the workpiece, a rotating mechanism for rotating the workpiece during cleaning or after cleaning, and a sensor for detecting a reference position of the workpiece. The polishing apparatus further having a controller for controlling the rotating mechanism to stop the workpiece against rotation to align the reference position with a predetermined position based on a detecting signal from the sensor, and a film thickness measuring device for measuring a thickness of a polished surface layer of the aligned workpiece.