Abstract: The invention provides an optical disk recording and reproduction method which suppresses a drop of the throughput of an optical disk apparatus by retrying caused by a read error. A control section of an optical disk apparatus controls, if a read error occurs upon reading out of data from a first address of an optical disk by an optical head section, the optical head section to perform retrying of reading out from the first address. Each time retrying is performed, the control section records the number of times of retrying into a memory. Then, if reading out from the first address is performed successfully, then the control section reads out the number of times of retrying from the memory. If the number of times of retrying exceeds a prescribed number of times then the control section secures an alternative second address in place of the first address on the optical disk.

Abstract: A transition metal catalyst component for polymerization, composed of a metal complex comprising specific ligands and a specific substituted boron group and having a bridging group, which exhibits a very high activity for an olefin type (co)polymerization or an olefin-aromatic vinyl compound copolymerization, whereby the molecular weight of a copolymer obtainable, is high. A method for producing an olefin (co)polymer and an aromatic vinyl compound-olefin copolymer, by means thereof.

Abstract: A transition metal catalyst component for polymerization, composed of a metal complex comprising specific ligands and a specific substituted boron group and having a bridging group, which exhibits a very high activity for an olefin type (co)polymerization or an olefin-aromatic vinyl compound copolymerization, whereby the molecular weight of a copolymer obtainable, is high. A method for producing an olefin (co)polymer and an aromatic vinyl compound-olefin copolymer, by means thereof.

Abstract: A highly uniform vinyl compound polymer-cross-copolymerized olefin/styrene/diene copolymer excellent in processability, mechanical properties, high temperature properties, compatibility and transparency, and its composition and a process for its production, are provided. This copolymer is a crossed polymer obtained by cross-copolymerizing an olefin/styrene/diene copolymer having a styrene content of from 0.03 mol % to 96 mol %, a diene content of from 0.0001 mol % to 3 mol % and the rest being an olefin, with an olefin/aromatic vinyl compound copolymer.

Abstract: The present invention firstly provides a novel olefin/styrene/diene type cross-copolymer having excellent physical properties and mechanical properties, and a novel, efficient and economically excellent process for its production. Further, it provides an efficient and economically excellent process for producing various cross-copolymers such as an olefin/diene type cross-copolymer. The present invention secondly provides various resin compositions or processed products containing cross-copolymers, having problems of various conventional resin compositions or processed products solved and improved, as applications of cross-copolymers of the present invention.

Abstract: A power supply apparatus for use in electroplating includes an input-side rectifier (32). A rectifier output is converted into high-frequency signals in inverters (38a, 38b), which are transformed in transformers (48a, 48b). When the transformed high-frequency signals from the transformers are of positive polarity, they are rectified by a diode (50a or 50b) to cause a positive current to be supplied to a load (60). When the transformed high-frequency signals are of negative polarity, they are rectified by a diode (50c or 50d) to thereby cause a negative current to flow through the load. A first IGBT (54a) is connected in series with each of the diodes (50a, 50b) and is rendered conductive and nonconductive at a frequency lower than the high-frequency signal. Also, a second IGBT (54b) is connected in series with each of the diodes (50c and 50d) and is rendered nonconductive when the IGBT and nonconductive at the lower frequency.

Abstract: A DC power supply apparatus has two power supply input terminals between which one of 100 V level, 200 V level and 400 V level AC power supply voltages or a 575 V AC power supply voltage is applied. A rectifying unit is connected between the two power supply input terminals, and a voltage-lowering converter is connected to the rectifying unit. A thyristor is connected between the input and output of the voltage-lowering converter. A series combination of two capacitors is connected between two output terminals of the voltage-lowering converter. A switch circuit is connected between the junction of the two capacitors and one input terminal of the rectifying unit. An inverter converts a DC voltage appearing across the series combination of the capacitors into a high-frequency voltage, which, in turn, is voltage transformed by a transformer. The voltage-transformed high-frequency voltage is converted into a DC voltage in a high-frequency-to-DC converter for application to a load.

Abstract: To provide an automatic vending machine capable of preventing, at the time of carrying out a commodity from a commodity column to a commodity receptor, the commodity from falling down due to a change in posture of the commodity, and mitigating falling shock of the commodity. When the commodity is carried out of the commodity column to the commodity receptor, the commodity is caused to abut on a commodity supporting member located on one side of the commodity receptor, and the commodity is moved toward the other end side of the commodity receptor with the commodity supporting member abutted thereon, whereby the commodity is received by the commodity receptor while the commodity is being supported by the commodity supporting member. Therefore, it is possible to reliably prevent the contents from being damaged due to falling down or falling shock caused by a change in posture of the commodity during carrying-out.

Abstract: A transition metal compound of the following formula (1) as catalyst component for the production of an aromatic vinyl compound polymer or an aromatic vinyl compound-olefin copolymer: wherein A is specified unsubstituted or substituted benzindenyl group, and B, M, Y, and X are as specified.

Abstract: A voltage from an AC power source is converted into a DC voltage in an input-side rectifier-smoother circuit. The DC voltage is then converted into a high-frequency voltage in an inverter, and the resulting high-frequency voltage is voltage-transformed in a transformer. The voltage-transformed high-frequency voltage is converted into a DC voltage in an output-side rectifier-smoother circuit, which is applied via output terminals to a load. The input-side and output-side rectifier-smoother circuits, the inverter and the transformer are enclosed in a casing having a plastic panel. The output terminal of the apparatus is mounted on the plastic panel.

Abstract: A highly uniform vinyl compound polymer-cross-copolymerized olefin/styrene/diene copolymer excellent in processability, mechanical properties, high temperature properties, compatibility and transparency, and its composition and a process for its production, are provided. This copolymer is a crossed polymer obtained by cross-copolymerizing an olefin/styrene/diene copolymer having a styrene content of from 0.03 mol % to 96 mol %, a diene content of from 0.0001 mol % to 3 mol % and the rest being an olefin, with an olefin/aromatic vinyl compound copolymer.

Abstract: The present invention provides an ethylene-aromatic vinyl compound copolymer having an aromatic vinyl compound content of from 1 to less than 55% by molar fraction, and otherwise defined in the claims, and compositions and molded products containing same.

Abstract: A DC voltage from a DC supply is applied to inverters of two power supply units connected in parallel with each other. The inverters convert the received DC voltages into high-frequency voltages, which are, in turn, voltage-transformed in transformers. The outputs of the transformers are rectified in two rectifiers, respectively, and smoothed in two reactors. The smoothed voltages are supplied between output terminals. The reactors are formed on a single core, being loosely coupled with each other.

Abstract: An electroplating current supply system includes a power supply unit for supplying an object to be plated (4) with an electroplating current whose polarity is inverted at predetermined intervals. The power supply unit includes a first DC power supply (3A) supplying a positive current and a second power supply (3B) supplying a negative current. The system includes further a processing unit (58) for controlling the ratio in magnitude and duration of the positive current (I2) to the negative current (I1) supplied to the object so as to plate the object with a uniform coating.

Abstract: A film containing at least 5 wt % of an aromatic vinyl compound-&agr;-olefin random copolymer having an aromatic vinyl compound content of from 1 to less than 99.9% by molar fraction and having head-to-tail chain structures comprising at least two aromatic vinyl compound units.

Abstract: A resin composition characterized by comprising from 5 to 95 wt % of an aromatic vinyl compound/olefin random copolymer (A) which has an aromatic vinyl compound content of from 1 to 99 mol % and has a head-to-tail chain structure composed of two or more aromatic vinyl compound units, and from 95 to 5 wt % of an &agr;-olefin type polymer (B) and/or an aromatic vinyl compound type polymer (C) (provided that it is neither a medical material nor a medical device), which contains substantially no chlorine and is excellent in the impact resistance, moldability, weather resistance and chemical resistance and which is useful for an injection molded product, an extrusion molded product, a film, a sheet, etc. Further, it provides an excellent damping material.

Abstract: An ethylene-aromatic vinyl compound copolymer characterized by satisfying the following conditions: (1) the aromatic vinyl compound content is from 0.5 mol % to 10 mol %; (2) as measured with respect to a molded product having a thickness of 0.2 mm, the haze is at most 14%, or the total light transmittance is at least 90%; (3) an ethylene-aromatic vinyl compound copolymer characterized in that the relation of the aromatic vinyl compound content and the glass transition point (Tg) obtained by an inflection point method as observed at a temperature of at least −50° C. by a differential scanning calorimeter (DSC), satisfies the following formula (1): −20+1.00St>Tg>−30+1.

Abstract: A DC power supply apparatus has two power supply input terminals between which one of 100 V level, 200 V level and 400 V level AC power supply voltages or a 575 V AC power supply voltage is applied. A rectifying unit is connected between the two power supply input terminals, and a voltage-lowering converter is connected to the rectifying unit. A thyristor is connected between the input and output of the voltage-lowering converter. A series combination of two capacitors is connected between two output terminals of the voltage-lowering converter. A switch circuit is connected between the junction of the two capacitors and one input terminal of the rectifying unit. An inverter converts a DC voltage appearing across the series combination of the capacitors into a high-frequency voltage, which, in turn, is voltage transformed by a transformer. The voltage-transformed high-frequency voltage is converted into a DC voltage in a high-frequency-to-DC converter for application to a load.

Abstract: A compact motor capable of being reflow-soldered, which can solve a problem of thermal demagnetization of a magnet with a simple structure, has magnets in a housing. At least a part of a surface to which the magnet is attached is separated by an acrylic adhesive sheet and heat resistant resin from metal members, such as a bracket and shaft forming part of the housing. The shaft is stainless steel having a low heat conductivity or an additional cover is used for the shaft to withstand reflow-soldering.

Abstract: A voltage from an AC power source is converted into a DC voltage in an input-side rectifier-smoother circuit. The DC voltage is then converted into a high-frequency voltage in an inverter, and the resulting high-frequency voltage is voltage-transformed in a transformer. The voltage-transformed high-frequency voltage is converted into a DC voltage in an output-side rectifier-smoother circuit, which is applied via output terminals to a load. The input-side and output-side rectifier-smoother circuits, the inverter and the transformer are enclosed in a casing having a plastic panel. The output terminal of the apparatus is mounted on the plastic panel.