Abstract: A belt drive device includes: a plurality of rollers; an endless belt placed on the rollers to be movable; a roller shaft shifting member disposed on at lease one end portion of a shaft of at least one of the rollers for shifting the one end portion of the shaft of the one of the rollers according to a movement of the endless belt in a shaft direction of the one of the rollers; a cleaning member disposed to face the one of the rollers; and a shifting member for shifting the cleaning member in the shaft direction of the one of the rollers when the endless belt moves in the shaft direction of the one of the rollers.

Abstract: An image forming apparatus employs a device that detects the opening and closing of covers. Two covers are pivotally mounted to a body of the image forming apparatus, each of the two covers being movable either to its opening position to open with respect to the image forming apparatus or to its closing position to close with respect to the image forming apparatus. A movable member is positioned at a first position when both the two covers are at their opening positions. A micro switch detects whether the two covers are closed or opened with respect to the image forming apparatus. When one of the two covers has moved to its closing position causing the movable member to move to a second position and the other of the two covers is at its closing position, the detector detects that the two covers are closed.

Abstract: A belt drive device includes a plurality of rollers and an endless belt stretched around the rollers, and configured to drive the endless belt by rotating the rollers. The belt drive device further includes a roller-shaft shifting member that shifts at least one end of a shaft of at least one roller of the above described rollers in accordance with the movement of the endless belt in the axial direction of the roller.

Abstract: A dry forming apparatus includes a carrying table (mold-transfer mechanism) which transfers a mold containing a die and punch units at least between a powder supply stage, a pressing stage, and a formed-product removing stage, a pressing driving mechanism which drives the punch units for pressing in the pressing stage, a connecting mechanism which connects punch units to the pressing driving mechanism when the mold is transferred to the pressing stage, and releases the connection of the punch units, and a unit holding mechanism which holds the punch units while the units are transferred to the next stage.

Abstract: A powder molding apparatus comprises a mold comprising a die having a powder molding space and upper and lower punch units, and a compression driving mechanism for performing compression molding by driving the upper and lower punch units independently, wherein molded articles formed by the compression molding are held by engaging lower first and second punches serving as a formed article holding mechanism at the time of transporting the molded articles. Thus, the molded articles can be prevented from falling or shifting while being transported between stages, thereby providing a powder molding apparatus capable of high speeds.

Abstract: Printing sheets (4) are placed on a sheet placing plate (103). A pickup roller (6) contacts a surface of the uppermost printing sheet (4) placed on the sheet placing plate (103) and feeds the printing sheet (4) out of the sheet placing plate (103). A spring (109) resiliently urges the sheet placing plate (103) toward the pickup roller (6). A ratchet (108) moves in accordance with the movement of the sheet placing plate (103). The printing sheets (4) on the sheet placing plate (103) urges the pickup roller (6) upward so that a pickup frame (115) moves upward to a position detected by a position detecting sensor (65). In accordance with the detection signal from the position detecting sensor (65), a solenoid (71) moves a lock lever (110) so that the lock lever (110) engages the ratchet (108) to thereby restrict the movement of the sheet placing plate (103).

Abstract: A belt unit (10) includes a drive roller (5), an idle roller (6) and an endless belt (4) stretched around the drive roller (5) and the idle roller (6). The drive roller (5) is supported by a belt frame (8) via bearings (2). The idle roller (6) is supported by the idle roller frame (16) via bearing members (10L, 10R). The idle roller frame (16) is rotatable relative to the belt frame (8) about a rotation axis aligned with the center position of the belt frame (8), with the result that the influence of the deformation of the belt frame (8) is not exerted on the idle roller frame (16).

Abstract: A belt device includes an endless belt, a plurality of rollers around which the endless belt is wound, and a foreign material entry preventing member disposed on at least one side of the endless belt in the width direction. The foreign material entry preventing member prevents the entry of the foreign material into a region surrounded by the endless belt.

Abstract: A tray 1 can be inserted in and pulled out of a main body 10 of an image forming apparatus. A lifting member 23 is provided in the main body 10 so that the lifting member 23 is able to enter into the tray 1 and lift a stack of sheets in the tray 1. The lifting member 23 is driven by a motor 25 provided in the main body 10. A switching member 27 is provided for connecting and disconnecting the transmission of the power of the motor 25 to the lifting member 23. When the tray 1 is fully inserted in the main body 10, the switching member 27 connects the transmission. In contrast, when the tray 1 is to be moved out of the main body 10, the switching member 27 disconnects the transmission, so that the lifting member 23 swings downward out of the tray 1.

Abstract: A tray 1 can be inserted in and pulled out of a main body 10 of an image forming apparatus. A lifting member 23 is provided in the main body 10 so that the lifting member 23 is able to enter into the tray 1 and lift a stack of sheets in the tray 1. The lifting member 23 is driven by a motor 25 provided in the main body 10. A switching member 27 is provided for connecting and disconnecting the transmission of the power of the motor 25 to the lifting member 23. When the tray 1 is fully inserted in the main body 10, the switching member 27 connects the transmission. In contrast, when the tray 1 is to be moved out of the main body 10, the switching member 27 disconnects the transmission, so that the lifting member 23 swings downward out of the tray 1.

Abstract: A powder molding apparatus comprises a mold comprising a die having a powder molding space and upper and lower punch units, and a compression driving mechanism for performing compression molding by driving the upper and lower punch units independently, wherein molded articles formed by the compression molding are held by engaging lower first and second punches serving as a formed article holding mechanism at the time of transporting the molded articles. Thus, the molded articles can be prevented from falling or shifting while being transported between stages, thereby providing a powder molding apparatus capable of high speeds.

Abstract: A dry forming apparatus includes a carrying table (mold-transfer mechanism) which transfers a mold containing a die and punch units at least between a powder supply stage, a pressing stage, and a formed-product removing stage, a pressing driving mechanism which drives the punch units for pressing in the pressing stage, a connecting mechanism which connects punch units to the pressing driving mechanism when the mold is transferred to the pressing stage, and releases the connection of the punch units, and a unit holding mechanism which holds the punch units while the units are transferred to the next stage.

Abstract: A raster distortion correction and deflection circuit arrangement includes a deflection coil adapted to be mounted on a cathode ray tube, a horizontal deflection coil driving circuit for passing a current of saw-tooth waveform of a horizontal deflection period through a horizontal deflection coil constituting the deflection coil, a flyback transformer the primary winding of which is connected between a power supply and an output terminal of the horizontal deflection coil driving circuit, an S-correction capacitor connected in series with the horizontal deflection coil, and an anode voltage detection circuit for detecting variations in an anode voltage of the cathode ray tube which is a secondary winding output of the flyback transformer. A raster distortion correction current based on an output voltage of the anode voltage detection circuit is injected into a connection point of the horizontal deflection coil and the S-correction capacitor.

Abstract: An image recording apparatus has a photoconductive drum and a roller, e.g., developing roller, in pressure contact with the photoconductive drum. The photoconductive drum rotates on its rotational axis and has drum gears rotatable about the rotational axis. The drum gears are at opposite ends of the rotational axis. The roller is in pressure contact with the photoconductive drum and rotates on its rotational axis substantially parallel with the rotational axis of the photoconductive drum. The roller has roller gears rotatable about its rotational axis. The roller gears are at opposite ends of the rotational axis and in mesh with the drum gears. At least one of the roller gears is provided with a one-way clutch which is locked only when a drive force is applied to the roller gear.

Abstract: A tubular member to be shaped comprises a first portion to be shaped and a second portion other than the first portion. A punch having a projection is inserted into the tubular member and the tubular member is pressed between a die having a recess and an anvil within a range where elastic deformation of the second portion occurs, to thereby form the first portion into an outwardly projecting portion. When the first portion is to be formed into an inwardly projecting portion, a die having a recess is inserted into the tubular member and the tubular member is pressed between a punch having a projection and an anvil within a range where elastic deformation of the second portion occurs, to thereby form the first portion into the inwardly projecting portion.

Abstract: A display device for suppressing focus dislocation due to high voltage fluctuation and realizing a dynamic focus circuit with large output at low power consumption and low cost, in which a circuit for detecting high voltage fluctuation is provided, and the dynamic focus waveform is clamped, and the waveform of horizontal cycle is clipped during the retrace time, and a boot strap circuit including an emitter follower, DC feedback circuit, and capacitor is provided as an output circuit.

Abstract: The present invention aims at providing an image display apparatus capable of displaying both a television signal and an image signal supplied from a personal computer with a high picture quality on a high definition display unit having 1024 by 768 pixels. In order to achieve this object, an image display apparatus according to the present invention includes an NTSC-VGA conversion circuit for converting a television signal to a signal having 640 by 480 pixels and corresponding to the non-interlacing VGA standard, a switch unit for selecting and outputting either the signal outputted from the NTSC-VGA conversion circuit and an inputted image signal from a personal computer, and a VGA-XGA conversion circuit for converting a number of pixels of a signal outputted from the switch unit to a number of pixels 1024 by 768 substantially equivalent to the number of the display unit.

Abstract: A projection display apparatus having three projection tubes for the projection of images of different primary colors wherein the images from the projection tubes are projected on an enlarged scale onto a screen through projection lenses. The display apparatus includes a first deflection unit having at least a first deflection coil mounted on a neck portion of a first projection tube, a second deflection unit having at least a second deflection coil mounted on a neck portion of a second projection tube and a third deflection unit having at least a third deflection coil mounted on a neck portion of a third projection tube. According to a feature of the display apparatus, a first linearity correction coil is coupled in series with a parallel connection of the second deflection unit and only one of the first and third deflection units.

Abstract: A suspension device for use in a vehicle such as an automobile includes a hydraulic damper combined with an air spring unit. The air spring unit includes two air chambers, and the communication therebetween is controlled by a rotary flow control valve.

Abstract: A hydraulic damper includes a tubular main body, a piston rod slidably extending through one end of the tubular main body, an annular seat member secured to an outer peripheral wall of the tubular main body, a biasing device such as a coil spring or an air spring acting between the seat member and the tip end of the piston rod for biasing the piston rod in the extending direction, and a supporting member constituting a part of the biasing device and having a tubular portion which is slidingly fitted on the seat member. A resilient retaining member is provided on the seat member for engaging with a retaining recess formed in the inner circumferential surface of the tubular portion of the supporting member, thereby preventing the supporting member from escaping from the seat member.