Abstract: A developing magnet roller is provided on a developing frame and a developing agent accommodating cartridge is fitted detachably into the developing frame. A toner accommodating cartridge unit is fitted detachably in the developing agent accommodating cartridge. A developing agent is recovered in the developing agent accommodating cartridge. The developing agent and the developing agent accommodating cartridge are exchanged together from a developing apparatus. The new developing agent accommodated in the exchanged new developing agent accommodating cartridge is circulated by the developing magnet roller. The exchange for the developing agent in the developing apparatus can be realized without the lowering of the developing performance.

Abstract: A face opposing type motor has a rotor yoke fixed to a hollow rotating shaft disposed in a non-contact bearing device; the non-contact bearing device having a fixed shaft inserted into the hollow rotating shaft; a rotor magnet held by the rotor yoke; and a driving coil substrate having a face opposed to the rotor magnet. The rotor yoke has a rotor magnet fitting portion fitted to an outer circumferential face of the rotor magnet so as to hold the rotor magnet by this rotor magnet fitting portion. In accordance with such a structure, it is possible to provide a reliable face opposing type motor having an excellent quality and cheaply manufactured by improving a system for holding a rotor magnet.

Abstract: The present invention relates to a network system capable of easily correcting communication terminal administration data identically in a plurality of nodes (i.e. store and forward machines) without specially requiring installation of any additional hardware. The network system comprises at least two nodes each administrating a plurality of communication terminals. Each of the nodes has a memory device memorizing not only data of its own administrating communication terminals but data of other communication terminals administrated by other nodes. And further, each node is effected to notify any change occurring in its own administrating communication terminals to other nodes in the network system.

Abstract: A tire cord made of a multifilament yarn of polyvinyl alcohol having a degree of polymerization of at least 1500, the yarn having a tensile strength of at least 10 g/d and an index of hot water resistance of at least 50.

Abstract: A multifilament yarn of polyvinyl alcohol having a degree of polymerization of at least 1500, the yarn having a tensile strength of at least 10 g/d and an index of hot water resistance of at least 50.

Abstract: A beverage extraction machine in which powdered material such as coffee is mixed with hot water in an extraction chamber which is mounted over a beverage receiver with a filter mounted between them. High pressure air is supplied into the beverage receiver and passes up through the filter to agitate the hot water and powdered material in the extraction chamber. Then air is sucked from the beverage receiver and drums the brewed coffee from the extraction chamber through the filter into the beverage receiver where it is discharged to a cup. A pressure sensor can be used to control the application of the high and low pressure air.

Abstract: A multifilament yarn of polyvinyl alcohol having a degree of polymerization of at least 1500, the yarn having a tensile strength of at least 10 g/d and an index of hot water resistance of at least 50.

Abstract: A sampling circuit is disclosed which samples input data in synchronism with a clock pulse. The sampling circuit comprises first and second sampling units. The first sampling unit includes a first input gate for receiving input data when a clock pulse signal level is in a first state (for example, "H"), a first holding unit for receiving data via the input gate, and a first output gate for outputting hold data of the first holding unit when the clock pulse signal level is a second state (for example, "L"). The second sampling unit includes a second input gate for receiving data when the clock pulse signal level is in the second state, a second holding unit for holding the data which is received via the second input gate and a first holding unit for outputting hold data of the first holding unit when the clock pulse signal level is in the first state.

Abstract: An optical deflector of an air bearing type has a fixed shaft; a rotary shaft having a hollow portion fitted onto the fixed shaft; a support device disposed between an end portion of the fixed shaft and an end portion of the hollow portion opposite thereto and supporting the rotary shaft in an axial direction thereof; a radial air bearing formed between an inner circumferential face of the hollow portion and an outer circumferential face of the fixed shaft; a polygon mirror fixed to the rotary shaft; a driving device for rotating the rotary shaft; a device for deflecting light irradiated onto the polygon mirror by rotating the rotary shaft through the driving device; a device for forming a flange for fixing the polygon mirror thereto integrally with the rotary shaft; and a device for setting an upper end portion of the support device on a fixed shaft side thereof to be lower than an upper end face of the polygon mirror.

Abstract: A high precision image recording apparatus includes an electrophotographic device having at least a photosensitive drum and an exposure unit, for forming a toner image on the surface of the photosensitive drum; a recording sheet feed/transport unit for feeding and transporting a recording sheet to which the toner image formed on the surface of the photosensitive drum is transferred; a transfer unit for transferring the toner image on the photosensitive drum to the recording sheet fed and transported by the recording sheet feed/transport unit; and a drive unit for driving the photosensitive drum and recording sheet feed/transport unit. The drive unit is provided with a motor coupled to the photosensitive drum via a rotation transmission mechanism having a speed reduction ratio of 1/integer number (inclusive of 1/1), and the exposure unit is provided with a recording start position control unit for starting recording image information from a predetermined reference position on the photosensitive drum.

Abstract: An optical non-contact detection of profile errors of a surface or surfaces of an article, such as an industrial product is carried out by a coherent signal bea of light introduced along an imaginary plane and projected onto the surface of the article at a large angle of incidence. The signal beam of light is reflected from the surface toward the same imaginary plane and traveled past optical system toward a photosensitive material on which a separate reference beam of light is projected. A hologram of the surface is formed on the photosensitive material, which is used for an analysis of the profile errors of the surface.

Abstract: A toggle-type die-fastening apparatus has a movable platen that carries one mold part and is supported by and guided along a plurality of tie bars whose one ends are fixed to a fixed platen on which another mold part is mounted. The other ends of the tie bars are supported by a toggle support, and a toggle mechanism is disposed between the toggle support and the movable platen for pressing the mold part carried by the movable platen against the mold part mounted on the fixed platen. A die-fastening force adjusting nut is threaded onto the end portion of each tie bar that is closer to the toggle support so as to bear the reaction of the die-fastening force generated by the toggle mechanism. An adjusting cylinder is formed in this portion, and it is connected to a hydraulic circuit so that the pressure within each of the cylinders is controlled by a pressure adjusting valve in such a manner as to correspond to a die-fastening force set by a setting device.

Abstract: High tenacity acrylonitrile fibers are provided.The high tenacity acrylonitrile fibers comprise acrylonitrile polymers composed mainly of acrylonitrile having an intrinsic viscosity of at least 2.5 to 3.5 and having a degree of crystalline orientation measured by wide-angle X-ray diffraction within a range of 93-97%, a tensile strength of at least 10 g/d, an initial modulus of at least 180 g/d, a knot strength of 2.2 g/d and a surface smoothness.A process for production of the high tenacity acrylonitrile fiber which comprises once extruding an acrylonitrile polymer solution having an intrinsic viscosity of 2.5 to 3.5 in air or in an inert gas through a spinning nozzle, then introducing into a coagulating bath, subjecting the resulting coagulated filaments to washing with water, drawing and drying, and then drawing the filaments under a drawing tension of about 1.0 to 2.5 g/d with dry heating at about 160.degree. to about 250.degree. C.

Abstract: An adaptive automatic equalizer of the type comprising a correction circuit for calculating a correction value for the weighting coefficients of an input signal at respective delay stages stored in the coefficient memory devices based on a difference signal between the output signal of the equalizer and a desired signal, and for correcting the weighting coefficients in accordance with the correction value, a detector for detecting a rapid change of the input signal, and an inhibiting circuit for inhibiting a substantial correction of the weighting coefficients effected by the correcting device when the rapid change is detected by the detector during an interval between the rapid change and return of the input signal to a stable state.

Abstract: A cobalt-containing ferromagnetic iron oxide powder of which constituent particles each is an aggregate of cobalt-containing ferromagnetic iron oxide micorparticles and has a spherical shape of 5 to 200 .mu.m in diameter has an angle of repose of 35.degree. or smaller and accordingly excellent flowability, as well as to a process for producing the iron oxide powder, are provided. This ferromagnetic iron oxide powder consisting of spherically shaped particles, are easily dispersed in an organic binder to return to the original state of microparticles, and provide improved magnetic characteristics when used as a material for magnetic recording media such as a magnetic tape and the like.

Abstract: A picture recording apparatus laser beam printer wherein a cassette, accommodating paper for receiving a transferred image, is loaded or unloaded on a front side of a housing of the printer. The conveyance direction of the paper accommodated in the cassette is reversed so as to be supplied to a transfer section by a paper separation reversal guide section. The conveyance direction of the paper is further reversed so as to be discharged on a tray in manner such that a forward end of the paper is located on a front surface side and an image transfer surface of the paper is faced downwardly. A manual paper feeding section is provided on the front side of the housing. A major portion of the cassette can be accommodated inside the housing whereby and the installation area can be reduced.

Abstract: An optical deflector for deflecting a laser beam from a laser by rotating a polygon mirror uses a dynamic pressure pneumatic bearing as a radial bearing and a magnetic bearing as a thrust bearing. The deflector includes a hollow rotor rotatable integrally with the mirror, a stationary shaft received in said hollow rotor, a casing member accommodating the rotor and stationary shaft, and an annular rotor magnet assembly mounted on the outer periphery of the rotor. A first rotary magnet is mounted in an upper end portion of a rotary shaft and a first stationary magnet in an upper end portion of the stationary shaft in such a manner as to face each other with the same polarity, a repulsive force acting between the two magnets serving as a thrust magnetic bearing. A second stationary magnet is arranged to face the first rotary magnet with the same polarity.

Abstract: An ultra-high-tenacity multifilament fiber of polyvinyl alcohol having a degree of polymerization of at least 1500, said filament having a tensile strength of at least 12 g/d and an initial modulus greater than 280 g/d, which is produced by a process for producing an ultra-high-tenacity polyvinyl alcohol fiber which comprises the steps of dissolving polyvinyl alcohol having a degree of polymerization of at least 1500 in a solvent, dry-spinning the resulting polymer solution through a spinneret into an environment of air or inert gas, introducing the dry-spun filaments into a coagulating bath, and drawing the coagulated filaments at a total effective draw ratio of at least 20 times.

Abstract: A drilling machine tool is disclosed having a machine tool body with a movable frame which is movable in the three axial directions X, Y and Z, of a rectangular coordinate system.

Abstract: An ultra-high-tenacity multifilament fiber of polyvinyl alcohol having a degree of polymerization of at least 1500, said filament having a tensile strength of at least 12 g/d and an initial modulus greater than 280 g/d, which is produced by a process for producing an ultra-high-tenacity polyvinyl alcohol fiber which comprises the steps of dissolving polyvinyl alcohol having a degree of polymerization of at least 1500 in a solvent, dry-spinning the resulting polymer solution through a spinneret into an environment of air or inert gas, introducing the dry-spun filaments into a coagulating bath, and drawing the coagulated filaments at a total effective draw ratio of at least 20 times.