Abstract: A sheet feeding device capable of again feeding, when failed to feed a sheet, the sheet by retry control is disclosed. The sheet feeding device includes a sheet tray loaded with a stack of sheets and a feed roller for sequentially feeding the sheets from the sheet tray one by one. A leading edge sensor is positioned downstream of the feed roller in the direction of sheet feed for sensing the leading edge of the sheet fed from the sheet tray. A registration roller pair is positioned downstream of the leading edge sensor in the direction of sheet feed for conveying the sheet toward an image transfer station at a preselected timing. When the retry control is to be executed, control means varies the content of control in accordance with information output from the leading edge sensor.

Abstract: An image display optical system according to the present invention has an illumination optical system, a plurality of image display elements, a color separation/combination optical system, and a projection optical system. The image display optical system also has a light guide element which reflects illumination light from the illumination optical system with a reflectivity of substantially 100% to guide the reflected light to the color separation/combination optical system and transmits image light from the color separation/combination optical system to the projection optical system.

Abstract: There is provided a color separating-combining optical system having:

Abstract: In a magnetic head measuring apparatus for measuring a magnetic head, an amplitude-modulated electric current whose amplitude is modulated by a specified carrier wave frequency and modulation frequency is applied to a magnetic head.

Abstract: A cast steel with excellent workability, characterized in that not less than 60% of the total cross section thereof is occupied by equiaxed crystals, the diameters (mm) of which satisfy the following formula:

Abstract: A magnetic head measuring apparatus executes measurement with respect to at least one measurement point on a recording head. The apparatus includes a probe having a magnetic substance, a vibrator which vibrates the probe above the at least one measurement point, a first signal generator which supplies a drive signal to the vibrator, a second signal generator which supplies a current containing a direct current and an alternate current to the recording head to generate a magnetic field from the recording head, a detector configured to detect a signal corresponding to a force interaction that acts on the probe due to the magnetic field generated from the recording head in accordance with the current supplied by the second signal generator, and a measurement unit which measures current dependence of the magnetic field of the recording head from the signal detected by the detector.

Abstract: There is disclosed a magnetic field characteristics evaluation apparatus for turning off a switching signal, measuring the surface of a magnetic field generating member in a magnetized state by AFM, and storing AFM signal together with a position signal corresponding to a scanning position in a memory to display a surface configuration based on the AFM signal. Subsequently, the switching signal is turned on, the magnetic head is set to a magnetized state, the AFM signal is referred to, the magnetic head surface is measured by MFM, and MFM signal together with the position signal corresponding to the scanning position are stored in the memory to display a surface magnetic field distribution based on the MFM signal. Therefore, it is possible to accurately specify, from the surface, a position in which the magnetic field is generated.

Abstract: A device for measuring a magnetic property of a magnetic reproducing head at a measurement point thereon, the device which applies a first magnetic field which oscillates at a predetermined oscillation frequency to the measurement point, applies a second magnetic field of which strength changes slower compared with the oscillation frequency of the first magnetic field to the measurement point, detects a signal generated by the magnetic reproducing head according to the total strength of the first magnetic field and the second magnetic field, extracts amplitude components synchronizing with the oscillation frequency from the signal, and calculates changes of the signal against the total magnetic field strength based on the extracted amplitude components.

Abstract: The present invention provides: a fuel tank made of a ferritic stainless steel sheet having long lasting corrosion resistance under the environment of the fuel tank and excellent in formability when fabricating the fuel tank; more specifically, a fuel tank made of a ferritic stainless steel sheet containing 10 to 25 mass % of Cr and having an average r-value of 1.9 or larger, an r-value in-plane anisotropy &Dgr;r of 1.0 or smaller, and a total elongation of 30% or larger, having a plane intensity ratio I(111)/I(100) of 10 or larger, and having lubricant films on the surfaces of the steel sheet and a surface friction coefficient of 0.10 or less.

Abstract: An apparatus for measuring a characteristic of a specimen, includes a probe for scanning a surface of the specimen in a noncontacting state, a vibrating unit for vibrating the probe, an excitation field generating unit for generating an amplitude modulation signal which is amplitude-modulated with a modulation frequency and a carrier frequency and producing an excitation field at the surface of the specimen on the basis of the generated amplitude modulation signal, and a measuring unit for measuring a force interaction between the probe and the specimen caused by the excitation field generated at the surface of the specimen.

Abstract: There is disclosed a magnetic field characteristics evaluation apparatus for turning off a switching signal, measuring the surface of a magnetic field generating member in a magnetized state by AFM, and storing AFM signal together with a position signal corresponding to a scanning position in a memory to display a surface configuration based on the AFM signal. Subsequently, the switching signal is turned on, the magnetic head is set to a magnetized state, the AFM signal is referred to, the magnetic head surface is measured by MFM, and MFM signal together with the position signal corresponding to the scanning position are stored in the memory to display a surface magnetic field distribution based on the MFM signal. Therefore, it is possible to accurately specify, from the surface, a position in which the magnetic field is generated.

Abstract: An electric power generating system includes a cell such as a fuel cell for outputting direct-current power and a conversion device having at least either one of an inverter for converting the direct current power into alternating-current power and a converter for changing a voltage level of the direct-current power. The cell generates high-temperature thermal energy of 60° C. or higher in association with the generation of direct-current power. The conversion device employs a semiconductor element capable of operating at an ambient temperature of 55° C. or higher. The semiconductor element may be an element having a wider band gap than Si. Further, the conversion device may employ a GaAs semiconductor element, an InP semiconductor element, an SiC semiconductor element, a GaN semiconductor element or combinations thereof.

Abstract: Prepared is a transcribing plate comprising a glass substrate and a chromium film formed on a surface of the glass substrate. The transcribing plate is disposed on a surface of an object (for example, a glass substrate of a plasma display panel) such that the chromium film faces the surface of the object. The transcribing plate is pressed toward the object, if necessary. A predetermined identification code pattern is drawn on the transcribing plate by a YAG laser beam. The laser beam reaches, through the glass plate, the chromium film to heat it. Chromium vapors generated by the heating are deposited on the surface of the object. This means that the identification code pattern is transcribed on the object surface.

Abstract: In a method for implementing traceable electronic cash, a user US sends a bank BK a product N of prime numbers P and Q, a prime number L and his real name ID.sub.U, and the bank BK generates a pseudonym I corresponding to the real name ID.sub.U and keeps the correspondence between the real name ID.sub.U and the pseudonym I secret. The bank BK uses a signature function .OMEGA.=D.sub.eB (N,L,I) to attach a signature to information composed of the above-mentioned N, L and I and sends the user US the signed information .OMEGA. as information containing a license B. The user US generates authentication information X from the N and a random number R and sends the bank BK information Z obtained by performing blind signature preprocessing on information (X,B) with a function F.sub.eC and has the information Z signed by the bank BK with a signature function D.sub.eC (Z) to obtain electronic cash C.

Abstract: A microwave band probing apparatus includes a wafer stage for mounting a wafer on which a plurality of microwave integrated circuits are present, an RF probe head for transmitting a microwave signal to a prescribed one of the microwave integrated circuits, and a shielding member covering the prescribed microwave integrated circuit when the RF probe head is in contact with an electrode pad of the microwave integrated circuit. Because the shielding member is electrically connected to the probe stage during probing and thereby a ground plane is produced above the microwave integrated circuit as in a packaged state, the conditions upon the measurement of microwave characteristics in the on-wafer state and in the packaged state are approximately the same.

Abstract: A method for the production of a desiccant for HFC-32, HFC-152a and blended refrigerants containing HFC-32 and/or HFC-152a comprises immersing formed articles of 3A type zeolite having 20 to 60% in ion equivalent weight of its sodium ions exchanged for potassium ions in an aqueous solution of at least one member selected from the group consisting of sodium silicate and potassium silicate, thereby effecting deposition of SiO.sub.2 on the formed articles, removing the SiO.sub.2 -deposited formed articles from the aqueous solution, dehydrating the wet formed articles and subsequently activating the dehydrated formed articles. Also provided is a desiccant for HFC-32, HFC-152a and blended refrigerants containing HFC-32 and/or HFC-152a produced by this method.

Abstract: A scouring agent composition for a fabric which exhibits high penetrating and scouring powers even under highly alkaline conditions and can produce a scoured fabric excellent in rewettability and which can dissolve in a 11quid medium for current high-speed and automatic desiring, scouring, bleaching and mercerization systems to give a clear cleaning fluid which causes little foaming, comprising (A) an adduct of a secondary or branched alcohol having 8 to 16 carbon atoms with an alkylene oxide, (B) a salt of a secondary alkanesulfonic acid having 13 to 17 carbon atoms and/or a salt of carboxymethylate of an adduct of a branched alcohol having 12 to 18 carbon atoms with an alkylene oxide and (C) a fatty acid having 6 to 18 carbon atoms or a salt thereof.

Abstract: A method of manufacturing an austenitic stainless steel sheet having reduced minute surface concavities and convexties ropings and gloss unevenness and a manufacturing system for carrying out the same are provided. The method comprises (a) a casting process of casting a molten austenitic (.gamma.) stainless steel into a thin cast plate by a twin-roll thin plate casting method employing a pair of cooled rolls disposed opposite to each other, (b) a cooling process of cooling the cast thin plate in a single phase state of the .gamma. phase, (c) a cast plate in a dual phase state of the .delta. and .gamma. phase or a single phase state of the .delta. phase and then cooling the thin cast plate to restore the single phase state of the .gamma. phase, and (d) a cold-rolling process of cold-rolling the heat-treated thin cast plate.

Abstract: A spinning lubricant composition for acrylic fiber, comprising:(a) at least one wax having a melting point of 30 to 130 degree, selected from the group consisting of ester wax, paraffin wax, polyethylene wax and polyethylene oxide wax, and(b) at least one surfactant, being cationic or amphoteric, selected from the group consisting of surfactants having the respective formulae (1) to (5): ##STR1##

Abstract: A method and apparatus for assembling exterior parts of a motorcar wherein assembling accuracy errors of a motor car body are determined by measuring positions of a plurality of reference points of said motorcar body. Correction data is calculated relating to respective assembling positions of plural kinds of the exterior parts which form an external shape of the motorcar, the calculation being performed on the basis of measured data obtained in the previous step, while maintaining a correlative relationship among said parts, to eliminate correlative misalignment among said parts due to the assembling accuracy errors of said motorcar body. Each of said parts is then assembled by respective assembling robots to respective assembling position which has been corrected in accordance with the calculated correction data.