Abstract: The present invention relates to a compound having an oxadiazole ring structure having a substituted pyridyl group connected thereto, represented by the following general formula (1). According to the present invention, it becomes possible to provide an organic compound having excellent characteristic of high stability in a thin film state, and the emission efficiency and durability of conventional organic EL devices can be remarkably improved.

Abstract: A fuel injection valve which injects fuel from a nozzle hole includes a cavitation generation flow path in which a cavitation bubble is generated in fuel flowing inside the injection valve, and a bubble storage flow path which is connected to the cavitation generation flow path and the nozzle hole and which stores the cavitation bubble generated in the cavitation generation flow path. A fuel containing the cavitation bubble stored in the bubble storage flow path is injected from the nozzle hole so that atomization of an injected fuel spray is enhanced.

Abstract: A jig for holding and conveyance having a weak-adherence adhesive pattern on a plate surface on which a printed circuit board having a conductive portion and a non-conductive portion on the surface of an insulating substrate is placed and held. The weak-adherence adhesive pattern is formed by being restricted to a position corresponding to non-conductive portion. A jig for holding and conveyance is also disclosed which has a fluorine-based resin layer on a plate surface on which a printed circuit board having a conductive pattern on the surface of an insulating substrate is placed and held. On the fluorine-based resin layer, the printed circuit board is held so that the conductor pattern surface of the printed circuit board is approximately parallel to the plate surface.

Abstract: Information is inputted easily and conveniently on a writing board. A sheet member, which is provided with a map and attributed magnet-accommodating areas, is attached onto a magnetic plate provided with coils wound therearound at constant intervals in the vertical direction and in the horizontal direction to provide the writing board. Induced electromotive force-detecting sections are provided to detect the induced electromotive forces of the respective coils. When a magnet is detached, a detachment position is specified from the induced electromotive forces generated in the respective coils. When the magnet is stuck, a sticking position is specified from the induced electromotive forces generated in the respective coils. The position and the attribute are incorporated into a personal computer.

Abstract: In a mirror with a heater, a reflective heating resistor film, or a reflection film and a heating resistor film, are formed on a mirror base plate. The heating resistor film is provided with at least one pair of electrodes to apply electricity to and heat the film. The reflective heating resistor film, reflection film and/or heating resistor film are so arranged as to form a clear visible image and to be heated. The temperature of the mirror surface can be controlled, and the electrodes are formed so as to heat the entire surface of the mirror uniformly.

Abstract: Disclosed is a process for preparing a particulate toner for developing an electrostatic image, which comprises suspending a polymerizable monomer composition comprising a polymerizable monomer, a resin dissolved therein, and a coloring agent in an aqueous medium not containing a dispersant to prepare a pre-suspension, jetting the pre-suspension through a nozzle under elevated pressure in a flowing direction which is forced to vary so that the pre-suspension collides with a predetermined plane or with each other, and then immediately passing the pre-suspension through an apparatus for throttling the path to produce back pressure and shearing stress to prepare a suspension containing a particulate polymerizable monomer and subjecting the resulting suspension to polymerization.

Abstract: An information input device comprises an input pen, a tablet having a transparent coordinate input board with which the input pen is placed in contact and a coordinate detection board for detecting the contact coordinate of the input pen, a display unit for supporting the tablet, and an arithmetic portion for calculating the contact coordinate of the input pen relative to the transparent input board. The input pen has a conductive contact portion coated with a high polymer film with a bending elastic modulus equal to or less than 300 kg/mm.sup.2 and a hardness of 50 to 120 on the Rockwell R scale and in which a coefficient of dynamic friction between the input pen and the coordinate input board is 0.15 to 0.4. The operational properties when the input pen contacts the transparent coordinate input board are good, and a display on the display unit is easily seen even through the transparent coordinate input board.

Abstract: A thermal head is defined as is its manufacture, the thermal head being produced on a substrate by forming a glaze layer having a number of bubbles by printing on it a glass paste containing a glass powder that contains at least 20% by weight or more of a finely divided glass powder with an average particle diameter of up to 5 .mu.m followed by calcining, and forming a heat generating resistor, an electrode and a protective layer successively on the glaze layer.