Abstract: A coin discrimination method and device reliably acquires stable two-dimensional images of the surfaces of coins, and using the acquired two-dimensional images is able to perform discrimination, reliably and at high speed, between genuine and counterfeit coins, and between coin types. In a coin pathway configured so as to block interfering light, sensors are positioned at an image-capture position and at a position upstream from the image-capture position; an image sensor is caused to begin image capture simultaneously with the detection, by the sensor upstream of the image-capture position, of a coin, and illumination is emitted for a short time simultaneously with the detection, by the sensor at the image-capture position, of the coin, to acquire an image of the coin. Specific patterns are detected in a binary image obtained by converting the acquired image to binary level, and coin discrimination is performed based on the detected patterns.

Abstract: A coin discrimination method and device reliably acquires stable two-dimensional images of the surfaces of coins, and using the acquired two-dimensional images is able to perform discrimination, reliably and at high speed, between genuine and counterfeit coins, and between coin types. In a coin pathway configured so as to block interfering light, sensors are positioned at an image-capture position and at a position upstream from the image-capture position; an image sensor is caused to begin image capture simultaneously with the detection, by the sensor upstream of the image-capture position, of a coin, and illumination is emitted for a short time simultaneously with the detection, by the sensor at the image-capture position, of the coin, to acquire an image of the coin. Specific patterns are detected in a binary image obtained by converting the acquired image to binary level, and coin discrimination is performed based on the detected patterns.

Abstract: Component information relating to components forming a structural object in virtual space realized by a computer is stored beforehand; information of desired components of these stored items of component information is selected; the dimensions of desired portions are set; a joining surface of each component is designated; the components are joined; and, finally, wall thickness is determined. In this way, even if there is a request for definition of a shape such as that of an underground structural object which departs greatly from previously defined shapes, shape definition can be performed in a flexible fashion and as far as possible without lowering the operational efficiency of definition of the shape of the structural object.

Abstract: When carrying workpieces from a loading area in which the workpieces are handled into a heat treatment furnace to make the workpieces subjected to a heat treatment process using a predetermined process gas, the loading area is evacuated and controlled at a predetermined low negative pressure. An exhaust for evacuating the loading area is connected to the loading area, and a controller controls the exhaust so that the loading area is maintained at the predetermined low negative pressure. A specific gas and particles contained in a gas discharged from the loading area are removed by filters.

Abstract: When carrying workpieces from a loading area in which the workpieces are handled into a heat treatment furnace to make the workpieces subjected to a heat treatment process using a predetermined process gas, the loading area is evacuated and controlled at a predetermined low negative pressure. An exhaust for evacuating the loading area is connected to the loading area, and a controller controls the exhaust so that the loading area is maintained at the predetermined low negative pressure. A specific gas and particles contained in a gas discharged from the loading area are removed by filters.

Abstract: A coin discrimination method and device reliably acquires stable two-dimensional images of the surfaces of coins, and using the acquired two-dimensional images is able to perform discrimination, reliably and at high speed, between genuine and counterfeit coins, and between coin types. In a coin pathway configured so as to block interfering light, sensors are positioned at an image-capture position and at a position upstream from the image-capture position; an image sensor is caused to begin image capture simultaneously with the detection, by the sensor upstream of the image-capture position, of a coin, and illumination is emitted for a short time simultaneously with the detection, by the sensor at the image-capture position, of the coin, to acquire an image of the coin. Specific patterns are detected in a binary image obtained by converting the acquired image to binary level, and coin discrimination is performed based on the detected patterns.

Abstract: A method and a device for recording data in an optical memory card which facilitate judgment between an unrecorded region and a recorded region in the optical memory card and which prevent double writing. Record pits are formed so that data to be recorded on the optical memory card is recorded in the same way as when recorded in the MFM-RZ modulation system. Data that was recorded in the NRZI-RZ modulation system is reproduced and the modified to record in the MFM-RZ modulation system. This method forms the record pits at least every two recording intervals or less in the recorded region in the optical memory card, making it possible to judge the unrecorded region of the optical memory card from the recorded region according to presence or absence of the record pits and thereby preventing double writing.

Abstract: An ink-jet recording sheet has a recording layer comprising a hydrophilic binder, fine inorganic particles having an average primary particle diameter of 30 nm or less, and a cation type water-soluble mordant having an average molecular weight of 50,000 or less. An ink-jet recording method in which excellent water resistance is provided.

Abstract: A recording method comprising the step of ejecting an ink jet recording ink on an ink receiving material using an ink jet printer, the ink comprising a dye represented by the following Formula (1): ##STR1##

Abstract: Information is recorded and reproduced by making a light beam traverse guide tracks to reach a target track. In moving the light beam to the target track, a tracking error signal is supplied to the inverting input terminal of a comparator to compare it with a potential at the non-inverting input terminal. The comparator outputs a comparison result signal to an output terminal. This output signal is fed back to the non-inverting input terminal via a feedback element so that the potential at the non-inverting input terminal changes with the output signal of the comparator. With the operation of the potential control circuit, a large feedback signal of the feedback element is used when a tracking control off signal is supplied, so that the potential at the non-inverting input terminal is easy to change with the output signal level. When the tracking control off signal is not supplied, a small feedback signal is used to change the potential at the non-inverting input terminal with the output signal level.

Abstract: Information is recorded and reproduced by making a light beam traverse guide tracks to reach a target track. In moving the light beam to the target track, a current output circuit responds to a track jump command, and supplies a drive current to an objective lens driver. The driver current is transformed by the conversion circuit into a rapidly rising and gradually falling current, and supplied to the driver, The objective lens then moves. When the light beam reaches a track adjacent the target track, a track traverse detecting circuit supplies a track traverse detecting signal. In response to this signal, the current output circuit supplies a damping current by reversing the polarity of the drive current to the driver. The damping current is transformed by the conversion circuit into a rapidly rising and gradually falling current, and supplied to the driver.

Abstract: A peak detection circuit accurately detects peaks even if a noise component is included in the input signal. The peak detection circuit includes: a differentiating circuit which produces a differentiated signal of an input signal, a peak hold circuit which produces a peak value envelope of an output of said differentiating circuit, and a first comparator which compares an output of said differentiating circuit and a reference signal formed on the basis of an output of said peak hold circuit, and which detects when said input signal falls below said reference signal A second comparator detects a portion which exceeds an output of said differentiating circuit A flip-flop produces a signal which rises in accordance with an output of said second comparator and falls in accordance with an output of said first comparator, thereby to form a signal representing a peak by the rise of an output of said flip-flop.

Abstract: An information recording and reproducing apparatus having a motion controller for an optical head capable of moving the optical head to a target position in a short time while eliminating an error to be caused by mechanical elements and without reading a present address during the motion of the optical head from a far jump to a near jump. In the information recording and reproducing apparatus for an optical information recording medium for recording and reproducing information to and from the medium by scanning a light beam from the optical head to a track, the motion of the optical head is controlled by a combination of a far jump driving the optical head and a near jump driving an objective lens assembled with the optical head. During the far jump, the optical head is controlled to move by half the motion distance in an acceleration mode, and by the remaining half in a deceleration mode.

Abstract: Disclosed is a silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, a hydrazine compound is contained in said silver emulsion layer or at least one of other layers, wherein said material contains at least one compound represented by Formula I or Formula II, ##STR1## wherein R.sub.1 and R.sub.2 each independently represent an alkyl group, an alkenyl group or an alkynyl group respectively; R.sub.1 and R.sub.2 may form a ring; R.sub.3 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; L.sub.1 represents a divalent linking group; X represents a --[S--L.sub.2 --Y--(L.sub.3)n]-- group or a [--(L.sub.3)n--Y--L.sub.2 --S--]-- group, L.sub.2 represents an alkylene group or an alkenylene group, Y represents a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, L.sub.3 represents ##STR2## wherein Z.sub.1, Z.sub.2 and Z.sub.

Abstract: There is disclosed a silver halide photographic light-sensitive material containing a compound represented by the following formula. The photographic material provides sufficiently high contrast images using a stable developer having a low pH value. The photographic material also provides a direct-positive type photographic material improved in image quality and storage stability.

Abstract: The improved silver halide photographic material contains a novel nucleating compound that is useful either as a contrast increasing agent in light-sensitive material for use in photochemical processes or as a foggant in direct positive light-sensitive materials.

Abstract: A cephalosporin derivative represented by the general formula ##STR1## wherein R.sup.1 is a hydrogen atom or a protecting group of the amino group, R.sup.2 is a hydrogen atom or a protecting group of the hydroxyl group, R.sup.3 is a hydrogen atom or a protecting group of the carboxyl group, and R.sup.4 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and the non-toxic salts thereof are useful as antibacterial agents.

Abstract: A cephalosporin derivative represented by the formula ##STR1## wherein R.sup.1 is a hydrogen atom or a protecting group of the amino group, R.sup.2 is a hydrogen atom or a protecting group of the hydroxyl group, R.sup.3 is a hydrogen atom or a protecting group of the carboxyl group, X is a halogen atom, a cyano group, a vinyl group, a lower alkoxy group having 1 to 4 carbon atoms or a lower alkylthio group having 1 to 4 carbon atoms and n is an integer of 1 to 3, and a non-toxic salt thereof are useful as antibacterial agents for oral administration.

Abstract: Cephalosporin derivatives represented by the general formula ##STR1## wherein R is a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms, R' is a hydrogen atom, a lower alkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 5 or 6 carbon atoms or a benzyl group, or R and R' together with the nitrogen atom to which they are attached form a tetrahydropyridinyl group, a morpholinyl group or pyrroridinyl group, and the non-toxic salts thereof are disclosed. These compounds are useful as antibacterial agents.

Abstract: Cephalosporin derivatives represented by the general formula ##STR1## wherein X represents a halogen atom, a hydroxyl group, a cyano group, a trifluoromethyl group, an amino group, a lower alkylcarbonylamino group, a lower alkoxy group, a lower alkylthio group, a lower alkoxycarbonyl group, a carbamoyl group, a substituted carbamoyl group, a carbamoyloxy group, a lower alkylcarbonyl group, a lower alkenyl group, an ethynyl group, a thiocyanate group, an .alpha.-carboxyaminomethyl group, a phenyl group, a pyridinyl group or an aminothiazolyl group, and n is an integer of 1 to 3, and the non-toxic salts thereof, are disclosed. These compounds are useful as antibacterial agents.