摘要:
A CRT driving circuit includes a cathode control circuit for controlling a cathode voltage of a CRT on the basis of a video signal created by a video circuit, a power supply circuit for creating a power supply voltage for each of the cathode control circuit and the video circuit, a switch circuit provided between the power supply circuit and the cathode control circuit, and a monitor control circuit for on/off controlling the switch circuit and the power supply circuit on the basis of a power-on/off externally inputted signal. In response to the power-on/off signal, when the monitor control circuit switches the switch circuit and the power supply circuit into an off-state, it turns off the power supply circuit later than the switch circuit. Even after a power-switch is turned off, the video signal is supplied to the cathode control circuit so that the cathode control circuit continues its on-state. Thus, the charges left in the CRT while the power-switch is turned off are discharged through the cathode control circuit in the on-state.
摘要:
A heater abnormality detecting circuit includes a heater winding. A fly back pulse extracted by the heater winding is supplied to a heater through a heater resistor, and voltage-divided and supplied to a micro-computer. The micro-computer determines a normality or abnormality on the heater by determining whether or not it is inputted with the voltage-divided fly back pulse in a predetermined time period.
摘要:
A method for preparing molded articles of a crosslinked polyolefin is here disclosed which comprises the steps of mixing polyolefin granules comprising polyolefin granules containing a hydrosilylation catalyst, polyolefin granules containing the copolymer of an alkenylsilane and an olefin, and if necessary, polyolefin granules containing neither the hydrosilylation catalyst nor the copolymer of the alkenylsilane and the olefin, and then heating, melting and molding the mixture in a molding machine.According to the present invention, the molded articles of the crosslinked polyolefin containing no residual crosslinking agent and having improved heat resistance and mechanical strength can be obtained by the easy method which comprises mixing the above-mentioned respective granules, and then heating, melting and molding the mixture.
摘要:
A thermoplastic resin composition comprising (a) 50-99% by weight of a polyarylenesulfide resin and (b) 50-1% by weight of a norbornene-type resin as essential components is disclosed. This resin composition possesses excellent stiffness properties and high heat resistance, and exhibits only small anisotropic properties and superior moldability during the molding operation, and is useful for molding various electronic parts, household electric or electronic parts and articles. Those having a Vicut softening point of 200.degree. C. or higher are especially useful for sealing electronic parts or photo-semiconductors.
摘要:
A syndiotactic graft copolymer is here disclosed in which a radical polymerizable unsaturated compound is grafted on a propylene homopolymer or copolymer, and this graft copolymer is obtained by heating a homopolymer having a substantially syndiotactic structure of propylene or a copolymer having a substantially syndiotactic structure of propylene and another .alpha.-olefin and a radical polymerizable unsaturated compound such as an unsaturated carboxylic acid or an unsaturated silane in the presence of a radical initiator up to the decomposition temperature or more of the radical initiator. This kind of graft copolymer can be used as a composition for adhesion. The graft copolymer in which the radical polymerizable unsaturated compound is a hydrolyzable unsaturated silane can be converted into a crosslinked polymer by heating in the presence of water, and it can also be converted into a water-crosslinkable resin composition by adding various additive thereto.
摘要:
A syndiotactic graft copolymer is here disclosed in which a radical polymerizable unsaturated compound is grafted on a propylene homopolymer or copolymer, and this graft copolymer is obtained by heating a homopolymer having a substantially syndiotactic structure of propylene or a copolymer having a substantially syndiotactic structure of propylene and another .alpha.-olefin and a radical polymerizable unsaturated compound such as an unsaturated carboxylic acid or an unsaturated silane in the presence of a radical initiator up to the decomposition temperature or more of the radical initiator. This kind of graft copolymer can be used as a composition for adhesion. The graft copolymer in which the radical polymerizable unsaturated compound is a hydrolyzable unsaturated silane can be converted into a crosslinked polymer by heating in the presence of water, and it can also be converted into a water-crosslinkable resin composition by adding various additive thereto.
摘要:
A printing head for use in a wire impact dot printer comprising a cylindrical heat radiating member, core block and nose frame. The core block is inserted into the heat radiating member and hermetically joined thereto by a heat conductive resin material. The heat radiating member has a mounting portion which is utilized to join the heat radiating member to a mounting reference surface of the carriage. The nose frame is secured to the heat radiating member by a positioning and fixing portion which registers with the mounting portion of the heat radiating member and mounting reference surface of the carriage.
摘要:
There is disclosed a document information filing system which displays the title information and the picture information by means of single display device comprised of a cathode-ray tube. A two-dimensional scanning device is provided for optically scanning a document to be filed to produce picture information corresponding to the document. The picture information produced by the scanner is magnetically recorded on a magnetic tape of an information custody device together with a retrieval information corresponding to the picture information and comprised of a plurality of code groups. When a proper code constituting the retrieval information is set by a keyboard, the title information including this code is selected from the information custody device. On the basis of the title information, desired document picture information is retrieved and extracted. The retrieval code of the title information and the desired document picture information are selectively transmitted to a cathode-ray display by way of a gate circuit.
摘要:
A 2-dimension scanning device scans picture information. When one-page picture information is stored into a page buffer, it is displayed by a display unit. Thereafter, when an operator depresses an abandon key, the picture information is abandoned. When the operator depresses a record key, the picture information is recorded on a recording medium. The picture information is read out and displayed by the display unit, whenever necessary. The picture information is deleted from the recording medium when a delete key is operated. When a recognition key is operated, a retrieval title corresponding to the picture information is recorded on the recording medium.
摘要:
The invention provides a method for producing alloy flakes for rare earth sintered magnets, which makes uniform the intervals, size, orientation, and shape of the R-rich region and the dendrites of the 2-14-1 phase, which inhibits formation of chill, and which produces flakes that are pulverized into powder of a uniform particle size in the pulverization step in the production of a rare earth sintered magnet, and that are pulverized into powder compactable into a product with a controlled shrink ratio, and alloy flakes for a rare earth sintered magnet obtained by the method, and a rare earth sintered magnet having excellent magnetic properties. The present method includes preparing an alloy melt of a composition consisting of R of rare earth metal elements and the balance M including B and Fe, and supplying and solidifying the alloy melt on a cooling roll, wherein the roll has on its surface linear nucleation inhibiting portions for inhibiting formation of dendrites or the like, and nucleating portions for formation of the dendrites, and wherein the inhibiting portions have a region with a width of more than 100 μm.