Abstract: There is provided a residual radioactive sludge liquid suction apparatus capable of safely and surely sucking radioactive sludge liquid remaining in a sludge storage tank with no fear of being exposed to radiation at a time when a small amount of sludge liquid remaining in the sludge storage tank is transferred to another tank.

Abstract: Provided is a radioactive sludge transfer apparatus for transferring sludge stored in a sludge storage tank with supernatant solution to a transfer tank including: a transfer body; a stirring apparatus for blasting the supernatant solution to the sludge; a sludge solution transferer for transferring the sludge solution to the transfer tank; an attitude control float; a floating force control ballast tank; and controller for remotely controlling the stifling apparatus, the sludge solution transferer and the floating force control ballast tank.

Abstract: There is provided a radioactive sludge transfer apparatus for transferring sludge stored in a sludge storage tank with supernatant solution to a transfer tank including: a transfer apparatus body; a stifling apparatus for blasting the supernatant solution to the sludge to thereby produce sludge solution in the one tank; sludge solution transfer apparatus for transferring the sludge solution to the transfer tank; an attitude control float; a floating force control ballast tank; and control device for remotely controlling the stifling apparatus, the sludge solution transfer apparatus and the floating force control ballast tank.

Abstract: There is provided a radioactive sludge transfer apparatus for safely and surely transferring radioactive sludge contaminated by radioactive substance stored in a sludge storage tank to a transfer tank for the sake of tank inspection.

Abstract: There is provided a radioactive sludge transfer apparatus for safely and surely transferring radioactive sludge contaminated by radioactive substance stored in a sludge storage tank to a transfer tank for the sake of tank inspection.

Abstract: There is provided a residual radioactive sludge liquid suction apparatus capable of safely and surely sucking radioactive sludge liquid remaining in a sludge storage tank with no fear of being exposed to radiation at a time when a small amount of sludge liquid remaining in the sludge storage tank is transferred to another tank.

Abstract: An inspection head is used for an inspecting apparatus that inspects whether there is an abnormal projection on a disk surface having a first lubrication layer, and floats over the disk surface. The inspection head includes a floating surface covered with a second lubrication layer that is repellent to the first lubrication layer.

Abstract: An image forming device includes a developer carrier (1) for carrying a charged developer (2), and a developer passing controller (3) for applying a voltage corresponding to an image. signal to a plurality of control electrodes (10) to control the passing of said developer (2), the developer passing controller having a plurality of developer passing holes (4) through which the developer (2) passes and said control electrodes being arranged to surround the surroundings of the developer passing holes. The width (W1) of a control electrode row (5) in the longitudinal direction where the control electrodes (10) are arranged is wider than the width (W2) of an image forming area, and both ends (B1, B2) of the control electrode row (5) in the longitudinal direction are arranged outside the width (W2) of an image forming area.

Abstract: The image forming apparatus includes a toner holding element 10 and a toner passage controller 4 having a plurality of toner passage holes 14, for controlling passage of toner 3. In order to prevent shortage of toner supply from the toner holding element 10 and form a high-quality image at a sufficient image density without producing thin white lines in such an image forming apparatus, the traveling speed of the toner holding element 10 is preset based on the traveling speed of an image receiving means 7 and at least one of the weight per unit area or the length in the scanning direction of the toner 3 that is applied to an image receiving means 7, the weight per unit area of the toner 3 held on the toner holding element 10 or the length of a toner-less region in the main scanning direction, and the number of pixels successively formed at different positions in the main scanning direction through the same toner passage hole 14.

Abstract: A color image forming apparatus is provided, having a plurality of image forming units; a carriage for retaining and rotating the plurality of image forming units so as to move the image forming units between an image forming position and a waiting position; an intermediate transfer belt for successive transfer and superposition of toner images of various colors from a photosensitive drum of the image forming units located at the image forming position so as to form a color toner image; and a secondary transfer roller for transferring the color toner image on the intermediate transfer belt onto recording paper. The only rollers support the intermediate transfer belt are a driving roller, a following roller, a primary transfer roller and a backup roller, and the primary transfer roller and the backup roller are arranged adjacent to the driving roller.

Abstract: In an image forming apparatus of the present invention, image signal electrodes are provided on a flexible printed circuit base in opposing relation to a developer carrying member such that they are disposed around the openings of developer passage holes, different voltages are applied thereto during dot formation and during non-dot formation, a throttle electrode is provided on the flexible printed circuit base in opposing relation to a counter electrode, a voltage always lower than the voltage applied to the image signal electrodes is applied to the throttle electrode when a developer of negative polarity is applied, and a voltage always higher than the voltage applied to the image signal electrodes is applied to the throttle electrode when a developer of positive polarity is applied.

Abstract: An image forming device includes a toner carrier (1) for holding and conveying charged toner (2), and a toner passage controller (3) including a plurality of holes (4) through which toner (2) is passed and control electrodes (10) disposed surrounding the holes. The control of passing of the toner (2) through the holes is effected by applying voltage to the control electrodes in accordance with image signals. The holes (4) have an elongated shape, with the length along a direction in which the toner carrier (1) moves being longer than the width orthogonal to the lengthwise direction, so that the consumption areas of toner (2) on the toner carrier (1) do not interfere with each other while the open area of the holes (4) is sufficiently secured.

Abstract: A color image forming apparatus is provided, comprising a plurality of image forming units including a photosensitive drum, a charging device and a developing device; a carriage for retaining and rotating the plurality of image forming units so as to move the image forming units between an image forming position and a waiting position; an exposing device for exposing a surface of the photosensitive drum of the image forming unit located at the image forming position; an intermediate transfer belt for successive transfer and superposition of toner images of various colors from the photosensitive drum of the image forming units located at the image forming position so as to form a color toner image; means for driving the photosensitive drum and the intermediate transfer belt; a position detector for detecting a reference position of the intermediate transfer belt when the intermediate transfer belt is driven, and outputting a reference position detection signal; a secondary transfer roller for transferring the

Abstract: A color image forming apparatus is provided, having a plurality of image forming units including a photosensitive drum, a charging device and a developing device; a carriage for retaining and rotating the plurality of image forming units so as to move the image forming units between an image forming position and a waiting position; an exposing device for exposing a surface of the photosensitive drum of the image forming unit located at the image forming position; an intermediate transfer belt for successive transfer and superposition of toner images of various colors from the photosensitive drum of the image forming units located at the image forming position so as to form a color toner image; a device for driving the photosensitive drum and the intermediate transfer belt; a position detector for detecting a reference position of the intermediate transfer belt when the intermediate transfer belt is driven; and outputting a reference position detection signal; a secondary transfer roller for transferring the c

Abstract: An image forming apparatus and an image forming method are characterized in that charged particle jumping can be controlled by applying signals having a small potential difference, and that low-voltage type switching devices can be used as switching devices for the power source. Control electrodes 16 are provided to move charged particles detached from a development roller 2 and to control the movement amount of the charged particles by generating a transfer electric field directly or indirectly between the development roller 2 and a rear electrode 8. A bias electrostatic field is generated between the development roller 2 and the control electrodes 16 by applying a voltage under a jumping start voltage, which is a voltage having the polarity opposite to the polarity of the charged particles and is lower than the jumping start voltage for detaching the charged particles from the development roller 2.

Abstract: A color image forming apparatus is provided, and includes a plurality of image forming units including a photosensitive drum, a charging device and a developing device; a carriage for retaining and rotating the plurality of image forming units so as to move the image forming units between an image forming position and a waiting position; an exposing device for exposing a surface of the photosensitive drum of the image forming unit located at the image forming position; an intermediate transfer belt for successive transfer and superposition of toner images of various colors from the photosensitive drum of the image forming units located at the image forming position so as to form a color toner image; a drive member for driving the photosensitive drum and the intermediate transfer belt; a position detector for detecting a reference position of the intermediate transfer belt when the intermediate transfer belt is driven, and outputting a reference position detection signal; a secondary transfer roller for transf

Abstract: In an image forming device wherein printing is accomplished such that passing of charged toners fed from a developer roller 2 through a plurality of openings 14 is controlled by control electrodes 16 of an aperture electrode 12 in accordance with image signals, toners held on the developer roller 2 are caused to reach the vicinity of the openings 14, by inputting a predetermined signal to the control electrodes 16 of the aperture electrode 12, at least once during the period when no image forming action in accordance with the prescribed image signals is performed.

Abstract: A color image forming apparatus having a simple mechanism for switching plural photosensitive drum units and still maintaining a high resolution image is provided. In the apparatus, each image forming unit including each color photosensitive drum is disposed around a rotating shaft of a carriage. Each photosensitive drum has a coupling plate at one end, which is engaged by a drive side coupling plate for transmitting a drive force to the photosensitive drum, when the image forming units is moved to the image forming position. An output shaft that rotates the drive side coupling plate supports an edge of a photosensitive drum shaft in alignment. A toner image formed on the photosensitive drum is transferred onto a transfer belt, which rotates at a constant speed, one by one to form a multicolor image on the transfer belt. The multicolor image on the transfer belt is transferred onto a paper sheet. A transmission between a motor and the carriage include a worm gear.

Abstract: An electrophotographic apparatus includes a photoconductor drum, also known as an electrostatic latent image holding member, with a magnet placed therein. An electrostatic latent image is formed on the magnetic drum. Then, the drum is brought into contact with a magnetic developer, or toner, in a developer reservoir to have the magnetic developer attached to the photoconductor drum surface by a magnetic force. A removing roller, having an AC voltage applied thereto, is passed in close vicinity of the magnetic drum with the resultant development of images because toner remains at image areas only. In the electrophotographic apparatus, the photoconductor drum, the removing roller or both include two magnetic poles. A device for increasing friction force of the surface of the photoconductor drum, of the removing roller or both may also be provided.

Abstract: An image forming apparatus according to the present invention includes: a photosensitive body; an exposing device for irradiating the photosensitive body with a light to form a latent image on the photosensitive body; a developing device for developing the latent image formed on the photosensitive body to form a developer image; a transfer roller for transferring the developer image on a recording paper; a fixing device for thermally fixing a transferred image on the recording paper after image transference; and a case for accommodating the photosensitive body, the exposing device, the developing device, the transfer roller and the fixing device, the case having at least six planes, two or more of the planes provided around an axis of the photosensitive body, being placement planes which are usable as a bottom during an image forming operation.