Abstract: Provided are a layered substrate that has excellent mechanical properties such as a flexural strength or a flexural modulus applicable to a structural material, the variations in those mechanical properties are small, exhibits excellent formability into a complicated shape, and is able to be molded in a short time, and a method for manufacturing the same. A layered substrate fabricated by layering plural sheets of sheet-shaped prepregs containing a reinforcing fiber oriented in one direction and a thermoplastic matrix resin, wherein the prepreg has a slit penetrating from the front surface to the back surface, each slit is provided so as to intersect with each reinforcing fiber only one time.

Abstract: The present invention relates to an epoxy resin composition which comprises a phosphorus-containing modified epoxy resin (A) consisting of a compound (a) represented by Formula (a); a novolak epoxy resin (B); a hardener (C) for epoxy resins; and a metal hydroxide (D), wherein the content in mass % of the phosphorus-containing modified epoxy resin (A), CA, and the content in mass % of the metal hydroxide (D), CD, relative to the total amount of the epoxy resin composition, satisfy the following Formulas (1), (2), and (3): (1) 2.5CA+CD?45; (2) 6?CA?40; and (3) 3?CD?30. This epoxy resin composition can give a composite material which has excellent flame retardancy even when neither a halogenated flame retardant, nor red phosphorus, nor a phosphoric acid ester is contained therein. According to the invention, it is also possible to provide a prepreg and a fiber-reinforced composite material obtained using the prepreg.

Abstract: Provided are a carbon fibre thermoplastic resin prepreg which is a carbon fibre prepreg obtained by impregnating a PAN-based carbon fibre in which the average fibre fineness of a single fibre is 1.0 dtex to 2.4 dtex with a thermoplastic resin, wherein the thermoplastic resin satisfies 20?(FM/FS)?40 (where FM: flexural modulus (MPa) of a resin sheet comprising only the thermoplastic resin, and FS: flexural strength (MPa) of the resin sheet), a method for manufacturing the same, and a carbon fibre composite material employing the carbon fibre prepreg.

Abstract: To provide an epoxy-resin composition and prepreg for producing a fiber-reinforced composite material which exhibits excellent curability and has excellent flame retardance and heat resistance, as well as to provide fiber-reinforced composite materials produced using the prepreg and to provide housing for electronic/electrical devices. The epoxy resin composition contains component (A): a phosphorus compound; component (B): an epoxy resin which has at least three epoxy groups in the molecule, and which does not correspond to component (A) nor include component (A); component (C): an epoxy resin curing agent which does not have a urea structure in the molecule; and component (D): a dimethylurea compound represented by formula (a) (in formula (a), “R” is a hydrogen atom or an alkyl group having any number of 1 to 10 carbons).

Abstract: The present invention relates to an epoxy resin composition which comprises a phosphorus-containing modified epoxy resin (A) consisting of a compound (a) represented by Formula (a); a novolak epoxy resin (B); a hardener (C) for epoxy resins; and a metal hydroxide (D), wherein the content in mass % of the phosphorus-containing modified epoxy resin (A), CA, and the content in mass % of the metal hydroxide (D), CD, relative to the total amount of the epoxy resin composition, satisfy the following Formulas (1), (2), and (3): (1) 2.5CA+CD?5; (2) 6?CA?40; and (3) 3?CD?30. This epoxy resin composition can give a composite material which has excellent flame retardancy even when neither a halogenated flame retardant, nor red phosphorus, nor a phosphoric acid ester is contained therein. According to the invention, it is also possible to provide a prepreg and a fiber-reinforced composite material obtained using the prepreg.

Abstract: Provided is an epoxy resin composition having superior flame resistance without containing a halogen-based flame retardant, red phosphorous or phosphate ester, and a prepreg and a fiber-reinforced composite material that use the epoxy resin composition. The epoxy resin composition has as essential components thereof (A) a phosphorous-containing epoxy resin composed of a compound (a) represented by the following formula (a), (C) a novolak-type epoxy resin, and (D) an epoxy resin curing agent. A prepreg containing the epoxy resin composition and a fiber-reinforced composite material obtained by curing the prepreg are also provided.

Abstract: In a mounting system including a loading station having a transport conveyor for conveying printed circuit boards, a mounting machine for fabricating circuit devices by attaching electronic assemblies on printed circuit boards supplied thereto from said loading station, and a unloading station having a transport conveyor for conveying circuit devices supplied thereto from the mounting machine, the loading station includes a discriminating device for discriminating the kind or type of printed circuit boards and generating a discrimination signal for instructing the kind or type of the printed circuit board. A mounting process in the mounting machine in selectively set by the discrimination signal from the discriminating device. According to this mounting system, even when many kinds of circuit devices are fabricated by many kinds of printed circuit boards, mounting processes can be successively carried out by one mounting line.

Abstract: In a mounting system including a loading station having a transport conveyer for conveying printed circuit boards, a mounting machine for fabricating circuit devices by attaching electronic assemblies on printed circuit boards supplied thereto from said loading station, and an unloading station having a transport conveyor for conveying circuit devices supplied thereto from the mounting machine, the loading station includes a discriminating device for discriminating the kind or type of printed circuit boards and for generating a discrimination signal for instructing the kind or type of the printed circuit board. A mounting process in the mounting machine is selectively set by the discrimination signal from the discriminating device. According to this mounting system, even when many kinds of circuit devices are fabricated by many kinds of printed circuit boards, mounting processes can be successively carried out by one mounting line.

Abstract: A sound field expansion system applicable to a magnetic recording and reproducing apparatus (VTR) which can expand the sound field in a simple construction. In the sound field expansion system, a circuit for virtually forming two comb filter characteristics is provided by adding a first audio signal and a second audio signal delayed by a predetermined interval of time with respect to the first audio signal and adding the first audio signal which is passed through a phase shift circuit which shifts the phase of the first audio signal so that the reproduced sound field can remarkably be expanded. Furthermore, a correction circuit for providing a predetermined frequency characteristic for the first or second audio signal is installed so that an acoustic image having a desired frequency band can be positioned.

Abstract: A scrambled television program is received and recorded in a scrambled fashion automatically in a video tape recorder by detecting program code signals placed in vertical blanking intervals of ten fields preceding the commencement of the scrambled program signal and upon sensing such program code signals the video tape recorder is activated to record the scrambled television program. A stop code signal is arranged following the coded television program and is detected for stopping operation of the video recorder, so that the scrambled program is recorded without requiring the manual setting of automatic timers or the like. In addition to the program code, a key code, and scene change signals are transmitted and these are used to produce a descramble pattern to descramble the television program when it is reproduced by the video tape recorder.

Abstract: In a cassette tape device having tape guide means movable around a tape guide drum, the operating time of the tape guide means is measured to actuate a protecting circuit to stop the tape drive motor if the operative time of the tape guide means exceeds the estimated operating time, as such excessive time would be indicative of trouble in the guide means.