PURPOSE:To obtain a substrate for an optical disk recording medium, which is excellent in an adhesive property of a glass transparent substrate and optical setting resin, etc. by executing treatment with a silan coupling agent to a glass substrate. CONSTITUTION:A coating liquid having a boiling point of >=200 deg.C, which consists of 0.1-2pts.wt. alkoxysilane having a vinyl group or an acryl group...

A halogen-metal vapor lamp (1) with its electrodes coming out of the discharge vessel at opposite ends is provided with a highly insulated socket at one end capable of withstanding 30 kV that may have to be applied for warm ignition of the lamp. Contact pins (9,10) of the socket (11) and connection bushings (22,23) of the support (21) into which the socket plugs in, are provided with collars (15,1...

The invention relates to porous post-chlorinated polyvinyl chloride resins which contain or have incorporated therein a salt of phosphoric acid resulting in a substantial improvement in the thermal stability thereof during subsequent processing. The phosphate salt is added to the porous post chlorinated polymer from an aqueous solution thereof which optionally contains a surfactant, which wets the...

Intermittent contacts between a flying transducer head and a magnetic record medium are monitored by detecting triboelectric charges generated by such contacts. Different amounts and polarities of triboelectric charge are generated by different materials on the surface of the record medium. The flight of the head when it is out of contact with the record medium can be monitored by detecting v...

A central processor for a general-purpose digital data processing system. The processor has a pair of caches, an operand cache for operands and an instruction cache for instructions, as well as a plurality of execution units, where each execution unit executes a different set of instructions of the instruction repertoire of the central processor. An instruction fetch unit fetches instructions from...

Polymer composition consisting of: A. 5-90 % (wt) of one or more graft copolymers obtained by polymerizing 10-90 parts by weight of a monomer mixture consisting of 20-40 % (wt) acryl compound, 60-80 % (wt) vinylaromatic compound, and 0-20 % (wt) of one or more other unsaturated compounds, in the presence of 10-90 parts by weight rubber; B. 0-70 % (wt) of one or more copolymers obtained by po...

PURPOSE:To perform the high density of an integrated circuit by forming a plurality of stages on the bottom of a chip carrier, and forming an external lead on the bottom of plural stages, thereby enabling to increase the number of the external leads. CONSTITUTION:The second ceramic substrate 21 smaller than the first ceramic substrate 20 of square shape is integrally secured to the lower side of t...

The apparatus comprises a blade rotating in a plane parallel to the ground and a casing, mounted at the front whereof on wheels and at the rear whereof on a roller, whereon an engine is mounted effective to drive the grass cutting blade and cause the apparatus to advance on the ground, an inlet chamber being further provided for sucking the cut grass and conveying it to a collecting hopper associa...

The apparatus comprises a blade rotating in a plane parallel to the ground and a casing, mounted at the front whereof on wheels and at the rear whereof on a roller, whereon an engine is mounted effective to drive the grass cutting blade and cause the apparatus to advance on the ground, an inlet chamber being further provided for sucking the cut grass and conveying it to a collecting hopper associa...

PURPOSE:To obtain a lead-in part having good water- and air-tightness without spoiling an ptical transmission characteristic by inserting an optical fiber which is filled with a viscous material between a strand and a covering without striping the covering into the through-hole of a sleeve into which the optical fiber is passed and fixing the same by an adhesive or the like. CONSTITUTION:An optica...

An elongate electrical terminal 10 with a deformed mounting portion 16 adapted to be press fitted into a circuit board aperture in an edgecard connector. The mounting portion is a generally cylindrical body with symmetrically opposed generally oval-shaped voids extending lengthwise therein so as to have a substantially bow-tie shaped cross-section with convex ends which plastically deforms at its ...

An optical fiber introducing equipment for an optical submerged repeater, in which for introducing an optical fiber for optical communication into an optical submerged repeater housing through an introducing hole, the coating of the portion of the optical fiber to be disposed in the introducing part is entirely removed for a suitable length; the coated optical fiber having the exposed fiber portio...

PURPOSE:To improve the utilizing efficiency of a sensor by dividing the circular hole of a flexible cylindrical tube to a plurality by means of partition walls extending radially and longitudinally, packing a transparent plastic body into one of the divided holes and forming a waveguide for transmitting light. CONSTITUTION:A flexible cylindrical tube 19 of an optical sensor is formed by dividing t...