摘要:
A high-strength extruded article of an age-hardening aluminum alloy capable of educing an achromatic dark gray color after the anodizing treatment thereof and a method for the production thereof are disclosed. The method comprises subjecting an alloy billet comprising 0.9 to 3.0% by weight of Si, 0.3 to 0.6% by weight of Mg, less than 0.3% by weight of Fe, and the balance of Al and unavoidable impurities or an alloy billet comprising 0.005 to 0.1% by weight of Ti either alone or in combination with 0.001 to 0.02% by weight of B besides the components mentioned above to a soaking treatment at a temperature in the range of from 350 to 480.degree. C. for 2 to 12 hours, extruding the soaked alloy billet at a billet temperature in the range of from 380 to 450 .degree. C., and subjecting the extruded alloy to an aging treatment at a temperature in the range of from 170 to 200.degree. C. for 2 to 8 hours. By the use of this method, there is obtained an extruded article which contains precipitated metallic silicon particles uniformly distributed therein and including those of particle sizes in the range of from 0.1 to 2 .mu.m in a proportion of not less than 85% of the total number of the precipitated particles and has the ability to educe a dark gray color of an achromatic color tone in consequence of a subsequent anodic oxidation thereof.
摘要:
A high-strength extruded article of an age-hardening aluminum alloy capable of educing an achromatic dark gray color after the anodizing treatment thereof and a method for the production thereof are disclosed. The method comprises subjecting an alloy billet comprising 0.9 to 3.0% by weight of Si, 0.3 to 0.6% by weight of Mg, less than 0.3% by weight of Fe, and the balance of Al and unavoidable impurities or an alloy billet comprising 0.005 to 0.1% by weight of Ti either alone or in combination with 0.001 to 0.02% by weight of B besides the components mentioned above to a soaking treatment at a temperature in the range of from 350.degree. to 480.degree. C. for 2 to 12 hours, extruding the soaked alloy billet at a billet temperature in the range of from 380.degree. to 450.degree. C., and subjecting the extruded alloy to an aging treatment at a temperature in the range of from 170.degree. to 200.degree. C. for 2 to 8 hours. By the use of this method, there is obtained an extruded article which contains precipitated metallic silicon particles uniformly distributed therein and including those of particle sizes in the range of from 0.1 to 2 .mu.m in a proportion of not less than 85% of the total number of the precipitated particles and has the ability to educe a dark gray color of an achromatic color tone in consequence of a subsequent anodic oxidation thereof.
摘要:
A storage system, including a storing unit, which is configured to be connectable to an information processor, includes a communication data receiving unit, a path information extracting unit, a specifying information creating unit and an access controlling unit. The communication data receiving unit receives communication data transmitted from the information processor. The path information extracting unit extracts path information indicating a communication path between the information processor and the communication data receiving unit, from the communication data received by the communication data receiving unit. The specifying information creating unit creates specifying information indicating the information processor that is the transmission source of the communication data, based on the path information extracted by the path information extracting unit. The access controlling unit performs an access control on the storing unit corresponding to the communication data, based on the specifying information created by the specifying information creating unit.
摘要:
Disclosed is an apparatus which, even when it becomes impossible to take an image of a mobile object due to existence of an obstacle to hide the mobile object, is capable of making a simulatory screen display of the mobile object, thereby notifying a driver of a risk of collision with the mobile object. Even when it is impossible to take an image of the mobile object because of existence of an obstacle, the apparatus displays a simulated picture image of the mobile object superimposed on an actual picture image, by obtaining an optical flow or by performing pattern matching. Thus, an effect is obtained that the mobile object is viewed as if transmitted through the obstacle. By notifying the driver of the risk of collision in advance by means of sound or video image perceptible by a human being, the danger of the collision is avoided.
摘要:
A reflective projection optical system comprises a first optical unit having at least one reflecting optical element, and a second optical unit having at least one reflecting optical element. A focal point on the second surface side of the first optical unit approximately agrees with a focal point on the first surface side of the second optical unit. An angle between a normal to the first surface and a principal ray of the illumination beam incident to the first surface is larger than a value of arcsine of a numerical aperture on the first surface side of the reflective projection optical system. All the optical elements in the projection optical system are located outside an extension surface of a ray group defining an outer edge of the illumination beam incident to the first surface.
摘要:
A magnetic disc device includes a magnetic disc, a magnetic head and an actuator. A ramp portion is provided for retracting the magnetic head when recording/reproducing operation is not performed. The ramp portion is arranged on a running path of the magnetic head on an external side of the magnetic disc so that a part of the ramp portion protrudes to an upper part of the outer periphery of the magnetic disc. A load-bar lubrication layer is formed on the surface of a load bar provided at the leading edge of the magnetic head. A head lubrication layer is formed on a head-slider plane of a head slider of the magnetic head. The load-bar lubrication layer reduces a dynamic friction coefficient with the ramp portion surface and suppresses occurrence of abrasion power, and the head lubrication layer suppresses adhesion of abrasion powder to the head-slider plane.
摘要:
According to the present invention, it is possible to improve the usability of an automatic image editing apparatus by finding subject-captured scenes from inter-frame motion vectors for automatic editing of motion images. If the result of analyzing inter-frame motion vectors indicates that all motion vectors in a region are the same in direction and magnitude, this region is judged as a subject being followed. Thus, it is possible to automatically extract and edit subject-captured scenes. In addition, the edited images namely plural scenes may be displayed either in the same order as edited or in the order of importance. As well, similar scenes may be combined into a single image sequence. Thus, it is possible to provide improved usability to the viewer.
摘要:
A first component defines a threaded bore. A second component is kept in contact with the first component. A clamping screw penetrates through the second component and is screwed in the threaded bore. A lubricating agent film is interposed between the threaded bore and the clamping screw. The lubricating agent film is made of a macromolecular compound having a polar end group. The lubricating agent film serves to reduce the friction between the threaded bore and the clamping screw. Generation of dust is prevented when the clamping screw is being screwed into the threaded bore. In addition, the clamping screw exhibits a larger axial force at a certain amount of a fastening torque as compared with a conventional clamping screw. A larger axial force can thus be applied to hold the second component onto the first component.
摘要:
A low-cost heat sink easy to assemble which is designed to be mounted on a power semiconductor module (5) through the medium of cooling water includes a base member (1), a heat sink body (2) superposed on the base member (1) to form in cooperation with the base member (1) a passage through which the coolant flows, and a bellows-like flow straightening plate (6) disposed between the power semiconductor module (5) and the base member (1) in physical contact with the power semiconductor module (5) on one hand and with the base member (1) on the other hand. The flow straightening plate (6) partitions the passage into a plurality of flow straightening channels (14A, 14B).
摘要:
An exposure apparatus performs exposure for a substrate by filling a space between a projection optical system and the substrate with a liquid and projecting an image of a pattern onto the substrate through the liquid by using the projection optical system. The exposure apparatus includes a substrate stage for holding the substrate, a liquid supply unit for supplying the liquid to a side of an image plane of the projection optical system, and a focus/leveling-detecting system for detecting surface information about a surface of the substrate not through the liquid. The exposure apparatus performs liquid immersion exposure for the substrate while adjusting a positional relationship between the surface of the substrate and the image plane formed through the projection optical system and the liquid, on the basis of the surface information detected by the focus/leveling-detecting system. The liquid immersion exposure can be performed at a satisfactory pattern transfer accuracy.