Abstract: A mold has a moling surface of a material containing silicon carbide and/or silicon nitride as a main component and a carbon thin film formed on the molding surface to prevent fusion sticking. A glass substance which has a sag point not higher than 565.degree. C. and a predetermined composition free from arsenic oxide is introduced into the mold. The glass substance is press-formed in a heated and softened condition into a glass optical element of high precision.

Abstract: A method for irradiating a workpiece making a relative move in accordance with a work program with a laser beam for cutting the workpiece includes steps of interrupting the cutting being executed and then restarting the cutting. As the cutting is restarted, machining of the workpiece is performed under specified conditions for a predetermined distance and a predetermined time to provide sufficient machining of the workpiece.

Abstract: A connecting end portion of a planar circuit body and method of making same in which an end portion is directly formed into a terminal thereby improving conductivity and simplifying the connection. According to one embodiment, a connecting end portion of a flat cable is formed by laminating a rectangular circuit conductor with an insulating cover material, a terminal member is fixedly secured to the planar circuit conductor at an end portion of the circuit conductor with a conductive adhesive agent, and plated metal layer is formed thereon.

Abstract: In a method for forming a groove-type isolation area, an insulating pattern is formed by a selective oxidation process or a LOCOS process on a semiconductor substrate. The semiconductor substrate is etched with a mask of the insulating pattern to create a groove in the semiconductor substrate. An insulating layer is buried in the groove to form the groove-type isolation area.

Abstract: The apparatus of the invention regenerates solitons in-line by synchronously modulating the solitons using a non-linear optical loop mirror as an optical modulator, the NOLM modulator being controlled by a clock signal recovered from the soliton signal by clock recovery means which may be all-optical means or electro-optical means. The NOLM includes an input coupler which may be a 50/50 coupler or an asymmetrical coupler. Said input coupler may be a 2x2 coupler or a 3x3 coupler. In a particular embodiment, the regenerating system further includes a plurality of optical amplifiers and a plurality of "guiding" filters. Application to long-distance soliton optical telecommunications.

Abstract: There is disclosed a thermal transfer dye-providing material capable of providing a sharp image having a high density.

Abstract: A telephone answering attachment to a highfidelity music system. An adaptor switches audio signals between a telephone circuit, a double-deck recorder and an amplifier. A bell signal on the telphone circuit causes one deck to play a back a prerecorded message onto the telephone circuit and causes the other deck to then record the caller's message. A short notification message is displayed on a television screen. Otherwise, the adaptor leaves the double-deck recorder in its usual configuration.

Abstract: The liquid testing apparatus comprises a housing incorporating a device for measuring the refractive index and a device for measuring the sonic velocity of the liquid under test. The housing comprises a chamber into which a prism protrudes and approximately collimated light is transmitted through the prism. By measuring the amount of totally internally refracted light, the refractive index of the liquid in the chamber is determined. A further chamber is provided in the housing and a sonic pulse transducer is disposed at one end of the further chamber which also receives the reflected pulse from the other end of the further chamber. A temperature sensor is also provided. The apparatus provides one or more signals to display the quality of the liquid and/or to provide a control of the liquid flow or of a device using the liquid. The apparatus may form part of a container drain plug and incorporate a drain valve.

Abstract: A industrial robot head device for conveying a workpiece to a working apparatus and performing a working operation on the workpiece by the working apparatus is disclosed in which a grasping device provided with claws for grasping the workpiece is pivotally supported on a frame by a parallel linkage and urged by a spring system in the direction of displacement of the grasping device. The attitude of the workpiece in thereby accurately maintained at all times, even when the workpiece is being urged against a work head, for instance, a welding head gun of a spot welding machine.

Abstract: In a magnetic tape cassette storage case having a casing and a cover to close and open the casing, recesses are formed in the inner surfaces of the cover and the bottom of the casing to receive a magnetic tape cassette's thicker portion which forms an opening in the front wall of the cassette.

Abstract: A liquid colorant for ABS resins is described, comprising 100 parts by weight of a pigment or dye and 25 to 2,000 parts by weight of a liquid polyester, and having a viscosity of 1,500 poises or less at room temperature. This liquid polyester is prepared mainly from an aliphatic dicarboxylic acid and a dihydric alcohol, and usually has a viscosity of 10 to 1,500 poises at room temperture. The liquid colorant has advantages such as (1) the dispersibility of the pigment is good, (2) the colorant can be weighed precisely, (3) the colorant does not deteriorate the appearence of the molded article, and (4) the colorant does not deteriorate the physical properties of the molded article.

Abstract: A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a magnetic layer comprising ferromagnetic particles dispersed in a binder, said ferromagnetic particles having a BET specific surface area of 25 m.sup.2 /g or more, said binder comprising a modified polyurethane resin containing 0.1 meq/g or more of functional groups selected from carboxyl groups, hydroxyl groups, sulfonic acid groups, and epoxy groups, and containing at least three functional groups per molecule of the resin.

Abstract: An electro-chemical sensor for the measurement of concentrations of gas or vapour in accordance with the limiting current principle comprises an electrolytic cell 1 having a sensing electrode 9, a counter electrode 2, an intervening body of electrolyte 4 and a restriction to the rate of access of gas or vapor to the sensing electrode in the form of a porous diffusion barrier 13. The improvement resides in the feature that substantially all the active pores of the diffusion barrier are sufficiently small as to cause diffusion through them to be in accordance with the Knudsen principle, i.e. the diffusion mechanism is effectively determined solely by collisons between the diffusion molecules and the walls of the pores. The barrier is constituted by a body of porous PTFE which may be in the form of a piece of unsintered PTFE tape or compressed PTFE powder formed by drying a dispersion of PTFE in water.

Abstract: A lens barrel automatic focalization device for a camera in which the camera body furnishes a focalization operational force in which the rotational resistance force produced by the focalization operation is made constant over various lenses so that the response time of the focalization operation is made uniform. The camera body includes a mount and a rotary member rotatably mounted on the camera body on a shaft perpendicular to the optical axis of the camera at the lower center portion of the mount. The focalization device includes a rotary member positioned so as to be rotatable by the rotary member of the camera body with the rotational force of the rotary member being coupled to a rotary cylinder having threads engaged with the threads of a movable sleeve or cylinder. The rotary cylinder is mounted within a stationary cylinder with ball bearings being provided therebetween.