Abstract: A scanning electron microscope comprises: an electron beam source, an electron beam acceleration device for accelerating primary electrons generated by the electron beam source, a deflector 5 for scanning and deflecting the accelerated primary electrons, a magnetic-electrostatic compound objective lens 2, 3 for focusing the scanned and deflected primary electrons onto a specimen 4 mounted on a specimen support, a reflection electron detector 10 for detecting reflection electrons generated from the specimen due to focusing and irradiating the primary electrons onto the specimen 4, a secondary electron detector 20 for detecting secondary electrons generated from the specimen due to focusing and irradiating the primary electrons onto the specimen 4, and an image display device for displaying a specimen image from detection signals from each detector 10, 20.

Abstract: A separator for an electric double-layer capacitor with an excellent property of preventing a short circuit between the electrodes, a good ionic permeability and a high strength is provided by a fiber sheet including a fibril-containing fiber and a fine polyester fiber having a fineness of not more than 0.45 dtex (decitex).

Abstract: A separator for an electric double-layer capacitor with an excellent property of preventing a short circuit between the electrodes, a good ionic permeability and a high strength is provided which comprises a fiber sheet comprising a fibril-containing fiber and a fine polyester fiber having a fineness of not more than 0.45 dtex (decitex).

Abstract: A process for manufacturing an electric double-layer capacitor with an excellent property of preventing a short circuit between the electrodes, a better ionic permeability and a high strength is provided, said process comprising using, as a separator, a fiber sheet containing a fiber having fibrils and a fine polyester fiber having a fineness of not more than 0.45 dtex (decitex) and drying the separator at a specific temperature.

Abstract: A level converter circuit includes a differential amplifier 20 having a load resistor 8 supplied at its one end with a voltage which is stabilized against the variation of a power voltage by an emitter-follower transistor 4 receiving at its base a bias voltage from a bias circuit 9, 12-14. An intermediate signal is derived from the other end of the load resistor and supplied to a level shift circuit 25.

Abstract: The specification discloses a hetero bipolar transistor which comprises a semiconductor substrate, a first silicon layer serving as a collector, a first silicon-germanium layer serving as a base, a second silicon layer serving as a collector, and a second silicon-germanium layer. A side wall of the second silicon-germanium layer is in contact with side walls of the first silicon layer, the first silicon-germanium layer and the second silicon layer. The second silicon-germanium layer is disposed to surround the first silicon layer, the first silicon-germanium layer, and the second silicon layer, and has an energy band gap substantially the same as that of the first silicon-germanium layer.

Abstract: The specification discloses a hetero bipolar transistor which comprises a semiconductor substrate, a first silicon layer serving as a collector, a first silicon-germanium layer serving as a base, a second silicon layer serving as a collector, and a second silicon-germanium layer. A side wall of the second silicon-germanium layer is in contact with side walls of the first silicon layer, the first silicon-germanium layer and the second silicon layer. The second silicon-germanium layer is disposed to surround the first silicon layer, the first silicon-germanium layer, and the second silicon layer, and has an energy band gap substantially the same as that of the first silicon-germanium layer.

Abstract: An image forming apparatus includes recording material carrying device for carrying thereon a recording material; image forming device for forming an image on the recording material carried on the recording material carrying device; attracting charger for electrostatically attracting the recording material on the recording material carrying device, the attracting charger first attracting the recording material on the recording material carrying device; feeding rollers for feeding the recording material to the recording material carrying device to attract it to the recording material carrying device, wherein a feeding speed by the feeding rollers is the same as or larger than a movement speed of the recording material carrying device or larger.

Abstract: An image forming apparatus including a transfer material supporting device. An elastic member, a movable supporting member, a deformation preventing member or a friction member is provided between a transfer material supporting sheet and a frame constituting the transfer material supporting means or adjacent to the mounting position of the transfer material supporting sheet on the frame. By doing so, the transfer material supporting sheet is prevented from twisting or the like, so that images having good quality can be provided stably.

Abstract: A word processor is disclosed in which a central processing unit for editing a document on the basis of characters, rule line data and processing commands from a keyboard, has an automatic tabset function of setting a tab automatically in the column following a column where a ruled line is set, on the basis of the ruled line data.