Abstract: An image forming apparatus includes an improved structure to prevent a user from coupling expendable supplies in incorrect positions upon replacement, and a power coupling device is mounted in the image forming apparatus as the improved structure. The power coupling device includes a plurality of driving couplers provided at a drive unit, and a plurality of driven couplers provided at a driven structure to correspond to the driving couplers, respectively. Each of the driving couplers has a first coupling portion to be coupled with a corresponding one of the driven couplers, and each of the driven couplers has a second coupling portion having a configuration corresponding to that of the first coupling portion. At least two of the first coupling portions have different cross sections from each other. The driven structure, adapted to receive power of the drive unit, includes a toner cartridge, photosensitive member, etc. provided in a developing unit of the image forming apparatus.

Abstract: A management system for semiconductor manufacturing equipment in a manufacturing facility is provided. The system includes a host computer communicating with a tracking server, the tracking server communicating with a wireless network adapted to communicate with a radio tag associated with a wafer cassette. The tracking server is adapted to receive status information from the radio tag via the wireless network, to derive location or movement information for the wafer cassette from the status information, and to determining an optimal transfer path for the wafer cassette through the manufacturing facility.

Abstract: A management system for semiconductor manufacturing equipment in a manufacturing facility is provided. The system includes a host computer communicating with a tracking server, the tracking server communicating with a wireless network adapted to communicate with a radio tag associated with a wafer cassette. The tracking server is adapted to receive status information from the radio tag via the wireless network, to derive location or movement information for the wafer cassette from the status information, and to determining an optimal transfer path for the wafer cassette through the manufacturing facility.

Abstract: A backlight unit is disclosed, to obtain the simplified assembling process by simplifying the external structure, which includes a plurality of light-emitting lamps arranged in one direction; a cover bottom having a central bottom and a quadrangle frame formed as one body, to receive both ends of each of the light-emitting lamps; and a reflective sheet formed on the inner surface of the cover bottom.

Abstract: A backlight unit for enhancing the luminance uniformity is provided. The backlight unit includes a plurality of fluorescent lamps arranged in a light-emitting surface, each of the plurality of fluorescent lamps having a bent structure; and at least one conic-shaped structures for reflecting an incident light, the conic-shaped structure being surrounded by the bent structure of at least two of the plurality of fluorescent lamps.

Abstract: A microwave power sensor and a method for manufacturing the same. The microwave power sensor includes a semiconductor substrate with a nitride or oxide film formed thereon. A membrane which is a portion of the nitride or oxide film is floated by removing a portion of the semiconductor substrate. First and second thermocouple groups are formed to be symmetrically spaced apart from each other on the membrane. An RF input end is formed on the nitride or oxide film. A heating resistor is formed on the membrane to be connected with the RF input end. First and second ground plates are formed on the nitride or oxide film at both sides of the RF input end. A third ground plate is formed on the nitride or oxide film to be connected with the heating resistor and electrically connected with the first and second ground plates. The first and second output terminals are formed on the semiconductor substrate to be connected with the first and second thermocouple groups, respectively.

Abstract: The present invention relates to a microwave power sensor and a method for manufacturing the same. The microwave power sensor comprises a semiconductor substrate with a nitride or oxide film formed thereon; a membrane which is a portion of the nitride or oxide film floated by removing a portion of the semiconductor substrate; first and second thermocouple groups formed to be symmetrically spaced apart from each other on the membrane; an RF input end formed on the nitride or oxide film; a heating resistor formed on the membrane to be connected with the RF input end; first and second ground plates formed on the nitride or oxide film at both sides of the RF input end; a third ground plate formed on the nitride or oxide film to be connected with the heating resistor and electrically connected with the first and second ground plates; and first and second output terminals formed on the semiconductor substrate to be connected with the first and second thermocouple groups, respectively.

Abstract: Stable aqueous size of ammonia-and/or amine-neutralized poly(amide-acid) of certain aromatic dianhydrides with certain aromatic diamines.

Abstract: A composite nonwoven fabric, particularly suited for an apparel insulating interliner, comprises a batt of crimped polyester staple fibers and a nonwoven sheet of continuous polyester filaments which are attached to each other by a series of parallel seams having a seam-to-seam spacing in the range of 1.7 to 5 cm. The batt is made of a particular blend of heavy and light staple fibers. The composite fabric has a density of 15 to 24 kg/m.sup.3 and an insulating value of at least 7 CLO/(kg/m.sup.2).

Abstract: Process is disclosed which is suitable for high speed production of uniform, lightweight webs by air-laydown of textile fibers. A toothed disperser roll doffs the fibers into an air stream of high uniform velocity and low turbulence to form a thin fiber layer from which the fibers are deposited in web form on a moving screen. A curved disperser plate, shrouds a portion of the disperser roll up to the point of fiber doffing. By using a disperser plate with a rough surface, preferably one having lateral grooves, web uniformity is remarkably improved.

Abstract: A staple fiber batt of improved uniformity is made by the fibers falling onto a moving conveyor, skimming off the top of the batt by jets of air flowing across the top of the batt, which thereby determines the level of the batt, and redepositing the skimmed off fibers onto said batt. The batt can then be compacted for further processing.

Abstract: Apparatus for depositing staple fibers onto a conveyor belt to form a batt, including a chute feeder having an adjustable weir plate provided with a row of air jets along the bottom edge for maintaining a uniform fiber level at the exit from the chute. Fibers are supplied in an air stream from which they are separated by condenser means and fall into the chute over distributing baffles.

Abstract: Process and apparatus are disclosed which are suitable for high speed production of uniform, lightweight webs by air-laydown of textile fibers. A toothed disperser roll doffs the fibers into an air stream of high uniform velocity and low turbulence to form a thin fiber stream from which the fibers are deposited in web form on a moving screen. A curved disperser plate, shrouds the disperser roll and prevents premature doffing. By using a disperser plate with a rough surface, preferably one having lateral grooves, web uniformity is remarkably improved.