Abstract: An organic electroluminescent device having an anode, a cathode, and at least one organic-compound layer that is provided between the anode and the cathode, with at least one layer of the at least one organic-compound layer being an organic luminescent layer, wherein the organic luminescent layer contains at least one host material and at least two luminescent materials, and at least one of the luminescent materials is a metal complex having a tridentate or higher polydentate chain ligand.

Abstract: The present invention provides an organic electroluminescent element that includes a pair of electrodes and a plurality of organic compound layers being disposed between the pair of electrodes. The organic compound layers include a luminescent layer containing a blue phosphorescent luminescent material and a host material having the lowest excited triplet energy (T1) of 272 kJ/mol (65 kcal/mol) or more, and hole transport layers. One of the hole transport layers is a layer adjacent to the luminescent layer, and when the ionization potentials of the luminescent layer, the hole transport layer adjacent to the luminescent layer, and another of the hole transport layers, respectively, designated to Ip1, Ip2 and Ip3, the relationship Ip1>Ip2>Ip3 is satisfied.

Abstract: Disclosed is an organic electroluminescent device comprising a first electrode, a second electrode, at least one organic layer containing a luminescent layer and disposed between the first electrode and the second electrode, a transparent substrate and a prism structure disposed between the first electrode or the second electrode and the transparent substrate, wherein the prism structure is disposed such that the apexes of the prisms face the transparent substrate side and the coefficient of variation in the pitch of the apexes of the prisms is 1% or more.

Abstract: The present invention provides an organic electroluminescent element including an anode, a cathode, and a plurality of organic compound layers including at least one organic luminescent layer between the anode and the cathode, in which the organic luminescent layer contains a host material and two or more phosphorescent materials; the organic luminescent layer is adjacent to the organic compound layers at both an anode side and a cathode side thereof; the organic compound layer disposed adjacent to the organic luminescent layer at the anode side thereby has a thickness of 50 nm or less in thickness; and the organic compound layer disposed adjacent to organic luminescent layer at the cathode side thereby contains a compound having an ionization potential of 6.0 eV or less. The present invention also provides a display device using the organic electroluminescent element.

Abstract: The present invention provides a light emitting element comprising a pair of electrodes and one or more organic compound layers including a luminescent layer disposed between the pair of electrodes. In this structure, the luminescent layer includes at least one charge transport material and at least one light emitting material, and comprises a laminated structure having two or more laminates including a plurality of layers including the light emitting material in different concentrations.

Abstract: An electroluminescence phosphor, containing zinc sulfide particles that have an average particle size of 20 &mgr;m or less, of which a distribution of particle size is a monodispersion, and which have a multi-twin crystal structure therein.

Abstract: A real-time recording system that decreases the load applied to a central processing unit, which controls recording. The recording system includes a memory for storing input data. An error correction circuit is connected to the memory for generating write data from the input data and storing the generated write data in the memory. A formatter circuit is connected to the memory and the error correction circuit for reading the write data stored in the memory and writing the read write data to the recording medium in real-time. The error correction and formatter circuits are controlled for the generation of the write data with the error correction circuit and the writing operation with the formatter circuit by a plurality of control signals. The control signals are transferred between the error correction circuit and the formatter circuit.

Abstract: A real-time recording system that decreases the load applied to a central processing unit, which controls recording. The recording system includes a memory for storing input data. An error correction circuit is connected to the memory for generating write data from the input data and storing the generated write data in the memory. A formatter circuit is connected to the memory and the error correction circuit for reading the write data stored in the memory and writing the read write data to the recording medium in real-time. The error correction and formatter circuits are controlled for the generation of the write data with the error correction circuit and the writing operation with the formatter circuit by a plurality of control signals. The control signals are transferred between the error correction circuit and the formatter circuit.

Abstract: A damper disc assembly having multiple embodiments. In one embodiment, spring seats are arranged at opposite ends of coil springs disposed between a power input rotary member and a power output rotary member. Each spring seat has a contacting surface with mutually perpendicular slanting portions. In another embodiment, a modified spring seat determines a phase or orientation of the power input rotary member with respect to the power output rotary member. In a third embodiment, a friction element is formed of resin and includes a friction adjusting element. The body portion of the friction element is made of resin and includes a friction generating surface that contacts a side surface of the sub-plate. The fiction adjusting element is provided in the friction generating surface of the body portion by molding and modifies the friction coefficient thereof. In a fourth embodiment, the friction element has a coating applied to a friction surface which modifies the friction coefficient.

Abstract: A pair of spring seats (32) are used at opposite ends of a small coil spring (6) disposed between a power input rotary member and a power output rotary member. Each spring seat (32) includes a receiving side surface for receiving the spring and a contacting surface (36). Each contacting surface (36) is formed with four slanting surfaces that slant inward toward a central portion of the contacting surface. The intersections of the four slanting surfaces of each spring seat define two intersecting V-shaped grooves (37, 38). The power input rotary member and the power output rotary member contact respective portions of one of the V-shaped grooves (37, 38) of each spring seat. Engagement between the rotary members and the engaged V-shaped grooves restricts movement of the spring seats (32).

Abstract: In one embodiment, a pair of spring seats (32) are intended for use at opposite ends of a small coil spring (6) disposed between a power input rotary member and a power output rotary member. Each spring seat (32) includes a receiving side surface for receiving a respective end of the small coil spring and a contacting surface (36). The contacting surface (36) is formed with slanting portions (37, 38) with V-shaped cross section, mutually perpendicular to one another. The power input rotary member and the power output rotary member contact a respective slanting section of one of the slanting portions (37, 38). In another embodiment, a spring seat (40) is provided with a first support portion (43) and a second support portion (44) such that the orientation of the spring seat (40) determines a phase or orientation of the power input rotary member with respect to the power output rotary member. In a third embodiment, a friction element is formed of resin and includes a friction adjusting element (20).

Abstract: In one embodiment, a pair of spring seats (32) are used at opposite ends of a small coil spring (6) disposed between a power input rotary member and a power output rotary member. Each spring seat (32) includes a receiving side surface for receiving the small coil spring and a contacting surface (36). The contacting surface (36) is formed with slanting portions with V-shaped cross sections (37, 38) mutually perpendicular. The power input rotary member and the power output rotary member each contact a respective slanting section of one of the slanting portions. In another embodiment, a spring seat (40) is provided with a first support portion (43) and a second support portion (44) such that the orientation of the spring seat (40) determines a phase or orientation of the power input rotary member with respect to the power output rotary member. In a third embodiment, a friction element is formed of resin and includes a friction adjusting element (20).

Abstract: A rotary anode assembly for an X-ray source, having a annular V-groove target portion for generating a desired characteristic X-ray emission by an electron beam bombardment applied thereto, wherein the V-grooved target portion is formed from a pair of target members each being formed into a body of rotation with respect to the axis of rotation of the assembly and having a surface including therein a coaxially-formed annular tapered portion. The target members are combined together so that the annular tapered surface portions face to each other with a predetermined angle therebetween, thereby constituting the annular V-groove. The annular V-groove target portion is formed in the peripheral surface of the rotary anode assembly or in the side surface of the anode assembly, which is perpendicular to the axis of rotation.

Abstract: A drive system for an engine-driven light vehicle which transmits the engine rotation to a wheel of the vehicle through a friction roller during normal engine operation, and transmits the wheel rotation to the engine through the friction roller to start the engine. The friction roller has its drive shaft disposed parallel with the crankshaft of the engine, between which shafts is interposed a power transmission means, e.g. a gear train meshing with each other. At least one gear of the gear train is rotatably fitted on the crankshaft, with which engages a one-way clutch for transmitting the drive shaft rotation to the crankshaft with a ratio of speed change preset for the start of the engine. A planetary gear is coupled to the gear train for transmitting the crankshaft rotation to the drive shaft through the gear train with a large reduction ratio.