Abstract: An electrophotographic image forming apparatus detachably mounts a process cartridge including an electrophotographic photosensitive drum. The apparatus includes a frame, a door, and a tray carrying the cartridge. The tray is movable among a first position inside the frame when the door is closed and the drum forms a latent image, a second position when the door is open and the tray protrudes from the frame to permit cartridge mounting and demounting, and a third position between the first and second positions where the tray is movable to the first position with closing of the door. Also, a regulating member moves between a regulating position regulating movement of the door from an opening position to a position where the tray is beyond the third position, and a permitting position permitting movement of the door from the opening to the closing position when the tray is at the third position.

Abstract: An electrophotographic image forming apparatus detachably mounts a process cartridge including an electrophotographic photosensitive drum and includes a frame having an opening; a door movable between closing and opening positions; a cartridge-carrying tray movable among a latent image formation position, a mounting and demounting position, and a movable position therebetween; and a regulating member movable between a regulating position for regulating movement of the door from the opening position to the position when the tray is beyond the movable position, and a permitting position for permitting movement of the door from the opening position to the closing position when the tray is at the movable position.

Abstract: An electrophotographic image forming apparatus includes a process cartridge which is mounted on a pull-out type cartridge tray to enable front access. The electrophotographic image forming apparatus includes an urging unit for urging and moving the cartridge tray toward a front of a main assembly of the apparatus and a clocking member for locking the cartridge tray in a proper position so that the cartridge tray is returned back to an outside position of the apparatus when the cartridge tray is pushed to the proper position.

Abstract: A color electrophotographic image forming apparatus having a main assembly, to which a process cartridge is detachably mountable, for forming a color image on a recording material, wherein the process cartridge includes an electrophotographic photosensitive drum and process means actable on the electrophotographic photosensitive drum, the apparatus includes an opening provided in the main assembly of the apparatus; a movable member which is linearly movable between an inside and an outside of the opening in a direction crossing with a longitudinal direction of the electrophotographic photosensitive drum while carrying plurality of such process cartridges; an accommodating portion for accommodating the process cartridges; and an urging member, provided above a movement path of the process cartridges, while being carried on the movable member, from the opening to the accommodating portion, for contacting the process cartridge passing therebelow to urge the process cartridge toward the movable member.

Abstract: An electrophotographic image forming apparatus with which a process cartridge having an electrophotographic photosensitive member is usable, the apparatus includes a transfer member contactable to the photosensitive member to transfer a toner image from the photosensitive member thereonto; a tray for carrying the cartridge, the tray being movable between a contact position in which the photosensitive member is contacted to the transfer member in a state that tray carries the cartridge and a spaced position in which the photosensitive member is spaced from the transfer member in the state that tray carries the cartridge; a supporting member for supporting the tray for movement in a tangent line direction which is parallel with a tangent line between the photosensitive member and the transfer member as seen in an axial direction of the photosensitive member between a first position for positioning the tray at the contact position and a second position which is retracted from the first position away from the tra

Abstract: A color electrophotographic image forming apparatus usable with process cartridges detachably mountable to a main assembly of the apparatus, the cartridges each including an electrophotographic photosensitive drum and means actable on the drum, includes a movable member which is movable between an inside of the main assembly of the apparatus and an outside of the main assembly of the apparatus in a direction crossing with a longitudinal direction of the drum while carrying the cartridges; a main assembly electrical contact provided inside the main assembly along a movement path of the movable member; and an intermediary electrical contact including a first electrical contact portion which is disposed inside the movable member and which is electrically connectable to a cartridge electrical contact of the cartridge and a second electrical contact portion which is disposed outside the movable member and which is electrically connectable to a main assembly electrical contact provided in the main assembly, wherein

Abstract: An electrophotographic image forming apparatus to which a process cartridge including an electrophotographic photosensitive drum is detachably mountable, the electrophotographic image forming apparatus includes a main assembly frame having an opening; a main assembly door movable between a closing position for closing the opening and an opening position for opening the opening; a tray for carrying the cartridge, the tray is movable among a latent image formation position which is inside the main assembly frame and is taken when the main assembly door is at the closing position and in which a latent image can be formed on the drum, a mounting and demounting position which is taken when the main assembly door is at the opening position in which the tray is protruded out of the main assembly frame through opening to permit mounting and demounting of the cartridge thereto, and a movable position which is between the mounting and demounting position and the latent image formation position in which the tray is mova

Abstract: A novel photochromic liquid crystal comprising a diarylethene compound having both photochromic properties and liquid crystallinity. This compound is a photochromic diarylethene compound having a mesogen group in each of the two aryl groups. The photochromic liquid crystal provides a large change in birefringence by photoisomerization or phase transition, and has high durability against repeated changes in birefringence. A side-chain polymer liquid crystal containing the above photochromic liquid crystal is useful as an optical recording material. Such an optical recording material is capable of performing light modulation by irradiation with light near Tc thereof, and is applicable to photo operator devices, optical memories, and the like. Further, the optical recording material is useful as a material for a recording layer of an optical recording medium such as an optical disk or an optical memory card.

Abstract: The present invention provided a method for manufacturing an organic-inorganic composite magnetic material which has organic radical molecules chemisorbed on the surface of a metal substance and exhibits super-paramagnetism or ferromagnetism. An ionic salt of a metal allowing thiol to be absorbed thereon is reduced with a reducing agent in the presence of a stabilizing ligand so as to form a soluble metal particle. The stabilizing ligand absorbed on the formed soluble metal particle is exchanged with a thiol-substituted organic radical having an unpaired electron so as to synthesize an organic-radical absorbed metal particle.

Abstract: A unit image area is specified, and unit image data representing a unit image in the unit image area is prepared. A plurality of the unit image areas are laid out on an image plane in a multi-composing manner, whereby layout information representing the multi-composing layout of the unit image areas is created. Mask data representing a plurality of multi-composed unit image areas are then prepared, based on the unit image area data and the layout information. Generated subsequently is an image recording signal representing unit images to be respectively drawn in the plurality of unit image areas, which are expressed by the mask data, on the image plane. Multi-duplicated images are eventually recorded on a photosensitive material according to the image recording signal without using a photocomposer.

Abstract: Liquid crystal display 1 has a surface disposed in parallel with a surface of holographic concave mirror 2. Liquid crystal display 1 causes a revolution about a display center "d" of holographic concave mirror 2 in a back-and-forth direction as indicated by arrow .alpha.. In response to such revolution around holographic concave mirror 2, liquid crystal display 1 causes an autorotation about its vertical center "e" in the back-and-forth direction as indicated by arrow .beta..

Abstract: A revolute welding robot including a base table provided with a first electrode at one end and an upright column, a slide arm with its rear end supported movable in the longitudinal direction of the column and its front end horizontally extending to the first electrode side of a bed, slide arm drive means disposed between the column and the slide arm, a swing arm connected to the front end of the slide arm so that the rear end is swingable in a vertical plane, swing arm drive means disposed between the slide arm and the swing arm, an electrode bracket with its rear end connected to the front end of the swing arm and swingable in a vertical plane and having a second electrode provided at the front end and opposing the first electrode, electrode bracket drive means disposed between the slide arm and the electrode bracket, and electrode moving means disposed at least one of the bed side and the electrode bracket side so that the first and second electrodes withdrawably oppose each other.

Abstract: A wheel presetting apparatus has a pair of rotatable lower rollers and a pair of rotatable upper rollers mounted above the lower rollers and movable into contact with a wheel supported on the lower rollers. A center pin is supported for forward and backward movement in relation to a center hole of the wheel, and, a bolt hole detecting means is provided for detecting the angular position of a bolt hole of the wheel. A hub pin is supported for forward and backward movement, and is inserted into a bolt hole which is out of the phase of the bolt holes detected by the bolt hole detecting means.

Abstract: An automatic wheel mounting apparatus provided with a robot for positioning a wheel on a hub of an automobile and for tightening nuts onto hub studs, which has a lifting device for lifting the hub in a direction to cancel the camber angle, a head positioned by the robot, and a measurement and positioning unit disposed on the head and having a hub center measuring device, a hub stud positioning device, and a hub inclination measuring device, whereby an inclination condition of the hub surface due to steering angle or the like is detected by the hub inclination measuring device to cause the measurement and positioning unit to confront the hub, the hub center is measured by the hub center measuring device to align the center of the measurement and positioning unit with the hub center, and then the hub is rotated by the hub stud positioning device to position the hub studs at predetermined positions.

Abstract: Described is a semiconductor device comprising a metal wiring formed on a semiconductor wiring including a device or devices, wherein impurities are injected into the metal wiring by ion implantation for suppressing the whiskers that may otherwise develop during processing of the metal wiring. Shorting among the wiring layers caused by such whiskers may be suppressed and the yield rate and operational reliability of the semiconductor device may be improved.

Abstract: A semiconductor device of a type of a sidewall base contact structure transistor, comprising a semiconductor substrate of first conductive type; a transistor structure including a first collector region of a second conductive type, a second collector region of the second conductive type the impurity density of which region is lower than that of the first collector region, a base region of the first conductive type, and an emitter region of the second conductive type, each of the four regions being composed of a single crystalline semiconductor layer, formed one after another in the mentioned order on the main surface of the semiconductor substrate; an insulating layer provided on the main surface of the semiconductor substrate, surrounding the first and second collector regions, the base region, and the emitter region; a collector lead region embedded in the insulating layer, one end of the region being in contact with the side wall of the first collector region, the other end of the region being exposed from

Abstract: An N.sup.- silicon layer is epitaxially grown on an oxide film with predetermined openings disposed on one main face of an N.sup.+ silicon substrate to form monocrystalline portions on the openings and polycrystalline portions on the oxide film. Ion implantation and thermal annealing is used to convert the polycrystalline portions to P.sup.+ external base regions and form P.sup.+ internal base regions in the monocrystalline portions. Arsenic ions are selectively implanted into the internal base regions to form N.sup.+ emitter regions. Then, base and emitter electrodes are formed on the external base and emitter regions so as to be electrically insulated from one another by an oxide film and a collector electrode is formed on the other main face of the substrate.

Abstract: An n.sup.- silicon layer is epitaxially grown on an oxide film with predetermined openings disposed on one main face of an N.sup.+ silicon substrate to form single crystalline portions on the openings and polycrystalline portions on the oxide film. Ion implantation and thermal annealing is used to convert the polycrystalline portions to P.sup.+ external base regions and form P.sup.+ internal base regions in the single-crystalline portions. Arsenic ions are selectively implanted into the internal base regions to form n.sup.+ emitter regions. Then, base and emitter electrodes are formed on the external base and emitter regions to be electrically insulated from one another by an oxide film and a collector electrode is formed on the other main face of the substrate.