Abstract: A marking pen, comprising: a shaft cylinder; a porous pen core accommodated in the shaft cylinder, and configured to project from, and retract into, an opening part provided at a tip end of the shaft cylinder; an inner cotton accommodated in the shaft cylinder, and filled with an aqueous ink composition to be fed to the pen core, the aqueous ink composition including a water soluble organic solvent in an amount of from 20 mass % to 60 mass %; and a delivery mechanism configured to cause a tip end of the pen core to project from, and retract into, the opening part.

Abstract: An AC/DC switching power supply that realizes a high power factor and has little voltage stress on a smoothing capacitor is provided. Also a switching power supply that has little voltage stress on a switch and is suitable for reduction in loss and miniaturization is provided.

Abstract: To improve reliability of a bus interface by restraining fluctuation in characteristics of an input circuit, such as threshold voltage, temperature and power source voltage, when an input signal shifts from Hi level to Lo level, transistor MP3 is OFF until the input signal lowers to a logic threshold value; and, by comparing a reference voltage and an input signal the low level input voltage shifts to the level of the difference voltage. When the input signal shifts from Lo level to Hi level, transistor MP3 is ON until the input signal exceeds the logic threshold value, the High level input voltage is increased by the amount of current of transistor MP4. The current of transistor MP4 is proportional to the current of transistor MN1, and, therefore, the High level input voltage becomes constant, and is not influenced by the threshold voltage, the temperature of the transistor, and power source voltage.

Abstract: A low-cost, easily-miniaturized switching power supply restrains voltage stress on first and second main switches. The switching power supply has small loss and low noise, enables setting of duty factors over a broad range, and has reduced thickness. The first main switch has one end connected with a negative electrode of an input voltage, and the second main switch has one end connected with a positive electrode of the input voltage. A first magnetic element is connected to the first main switch, and a second magnetic element is connected to the second main switch and the first magnetic element. The switching power supply has: a first diode connected to the first main switch, the first magnetic element, and the second magnetic element; a second diode connected to the first diode, the second main switch, and the second magnetic element; and an auxiliary switch between the diodes.

Abstract: An optical link device is provided with an optical communications package including a device positioning member, a photoelectric converter placed on the device positioning member, and leads for connecting contact terminals of the photoelectric converter with an external device; a sealing cap attached to the device positioning member and which seals the photoelectric converter; a condenser lens for guiding incident light to a photo detector (the photoelectric converter) or an optical fiber; a housing in which at least the optical communications package, the condenser lens and the sealing cap are placed; a receptacle for being coupled with the housing as well as the optical connector; a sleeve into which the optical fiber is inserted; a stopper against which the tip of the optical fiber is butted and for positioning the optical fiber. The sealing cap, the condenser lens, and the stopper are formed in a single unit member.

Abstract: An AC/DC switching power supply that realizes a high power factor and has little voltage stress on a smoothing capacitor is provided. Also a switching power supply that has little voltage stress on a switch and is suitable for reduction in loss and miniaturization is provided.

Abstract: A switching power supply that improves utilization efficiency of individual transformers and is suitable for miniaturization is provided. Also a switching power supply suitable for reduction in thickness is provided. A switching power supply including a rectifying circuit for rectifying an AC voltage, a smoothing capacitor for smoothing an output of the rectifying circuit, and plural transformers to which a voltage of the smoothing capacitor is applied by turning on/off of a switching circuit and which induce a voltage to be an output at secondary windings, wherein the transformers have first primary windings connected in parallel and second primary windings connected in series, the first primary windings, the second primary windings, the switching circuit and the smoothing capacitor are connected in series, and a connection point between the first primary windings and the second primary windings is connected to the AC voltage via a diode and a first magnetic element.

Abstract: A switching power supply is provided which suitably restrains voltage stress on a first main switch and a second main switch, can be made at a low cost and can be easily miniaturized. Also a switching power supply is provided which has a small loss and low noise, enables setting of duty factors in a broad range, and is suitable for reduction in thickness.

Abstract: An optical link device is provided with an optical communications package including a device positioning member, a photoelectric converter placed on the device positioning member, and leads for connecting contact terminals of the photoelectric converter with an external device; a sealing cap attached to the device positioning member and which seals the photoelectric converter; a condenser lens for guiding incident light to a photo detector (the photoelectric converter) or an optical fiber; a housing in which at least the optical communications package, the condenser lens and the sealing cap are placed; a receptacle for being coupled with the housing as well as the optical connector; a sleeve into which the optical fiber is inserted; a stopper against which the tip of the optical fiber is butted and for positioning the optical fiber. The sealing cap, the condenser lens, and the stopper are formed in a single unit member.

Abstract: A DC/DC converter having a control circuit to reduce losses at light load, wherein a first control device turns ON and OFF power to the primary winding of the transformer of the DC/DC converter according to the difference between the output voltage of the DC/DC converter and the desired output voltage, and a second control device turns ON a switching device of a clamping circuit connected to the primary winding for a desired length of time after the first control device turns OFF the power to the primary winding.

Abstract: The present invention provides a DC/DC converter and a control method thereof whereby losses at a light load are reduced.

Abstract: A switching power supply wherein an inductor device is connected to the center tap of a primary winding of a transformer with a switching device provided to apply high frequency signals to the transformer concurrently with a rectified smoothed input signal applied to the primary winding concurrently by another inductor device so that the secondary winding of the transformer produces a DC output signal which is free of harmonic current and whereby the switching power supply power factor is improved.

Abstract: A support structure for supporting an acoustic oscillation transferring device has a cushion forming a part of an automobile's seat and having an open space therein in which a frame of the device is supported, and an unstretchable but flexible band material for securing a frame of the device to a frame of the automobile's seat.

Abstract: A composition for preventing graying of the hair and restoring grayed hair to its natural color comprises an effective amount of one member selected from the group consisting of cAMP compounds such as 8-butylthio cAMP-Na or 8-methoxy cAMP-Na and water. The composition can prevent graying of the hair and restoring grayed hair to its natural color upon application to the scalp, the effective component is very stable even in the form of compositions containing water and the composition does not cause quality deteriorations such as giving out of bad smell.

Abstract: Methods and compositions for restoring grayed hair to its natural color comprising at least one compound of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 may be the same or different and each represents a hydrogen atom, an acyl group having 5 to 15 carbon atoms derived from a monocarboxylic acid having 5 to 15 carbon atoms or an acyl group having 2 to 15 carbon atoms derived from a dicarboxylic acid having 2 to 15 carbon atoms or an alkyl group having 1 to 2 carbon atoms; X.sub.1 and X.sub.2, respectively, represent a hydrogen atom, a halogen, or a mercapto group; with the proviso that when R.sub.1, R.sub.2 and R.sub.3 and X.sub.1 are hydrogen atoms at the same time, X.sub.2 is not a halogen atom or a mercapto group, and M.sub.1 represents a hydrogen atom, an alkali metal or tris(hydroxymethyl)aminomethane.

Abstract: A composition for preventing graying of the hair and restoring grayed hair to its natural color comprises an effective amount of one member selected from the group consisting of cAMP compounds such as 8-butylthio cAMP-Na or 8-methoxy cAMP-Na and water. The composition can prevent graying of the hair and restoring grayed hair to its natural color upon application to the scalp, the effective component is very stable even in the form of compositions containing water and the composition does not cause quality deteriorations such as giving out of bad smell.

Abstract: A composition for application to hair or scalp comprises (A) at least one compound selected from the group consisting of (i) forskolin and derivatives thereof and (ii) peptides having a basic skeletal structure represented by the following general formula (I):-P-Glu-His-Q-Arg-Trp-Gly-Lys- (I)(wherein P represents an L-norleucine or L-methionine residue; Q represents a D- or L-phenylalamine residue; and Glu, His, Arg, Trp, Gly and Lys are L-glutamic acid, L-histidine, L-arginine, L-tryptophan, glycine and L-lysine residues respectively); or the component A and (B) at least one compound selected from the group consisting of aliphatic acids, alcohols and derivatives thereof having an odd number of carbon atoms. The composition for hair or scalp exhibits excellent effect of preventing graying of the hair and restoring grayed hair to its natural color upon externally applied to the scalp and is highly safe as regards to the possibility of causing skin damage.

Abstract: Disclosed is a process for the corrosion protection of a neodymium-iron-boron group sintered magnet, which comprises the steps of: immersing the neodymium-iron-boron group sintered magnet in oxidizing acid to activate the surface thereof; plating the magnet with nickel having internal stress of not more than 1000 kgf/cm.sup.2 ; and applying cationic electrodeposition coating thereto.

Abstract: Disclosed is a method of nickel-tungsten-silicon carbide composite plating which comprises the steps of: preparing a plating bath having the following composition;______________________________________ nickel sulfate 0.12-0.16 mol/L sodium tungstate 0.17-0.23 mol/L ammonium citrate 0.30-0.50 mol/L pH 6.0-8.0 bath temperature 60-80 ______________________________________dispersing fine powder of silicon carbide having a grit size of 0.8-1.5 .mu.m in the plating bath with a concentration of 20-60 g/L; and causing electrolysis in the plating bath while mechanically agitating the plating bath, with a cathode current density of 10-30 A/dm.sup.2 by use of a stainless steel plate as an anode.

Abstract: Disclosed is a method of industrial low hydrogen embrittlement nickel plating by using an insoluble anode, comprising the steps of preparing a plating bath composed of only nickel sulfate, sodium sulfate and boric acid, and performing plating in the plating bath while making electrolysis by using a lead anode as the insoluble anode and while supplying nickel carbonate slurry into the plating bath to thereby cause the nickel carbonate to dissolve in a plating solution in the plating bath under the control of pH of the plating solution, and further disclosed is a steel-formed matter which is plated by the method described above.