摘要:
An electrophotographic apparatus has a photoreceptor drum supported for rotation in one direction sequentially past a plurality of processing stations, a corona charger for electrostatically charging the photoreceptor drum, a developer hopper accommodating therein a mass of developing material used to form a visible toner image and a transfer charger for transferring the toner image onto a recording paper. The developer hopper has its bottom portion formed with an opening open so as to accommodate a portion of the photoreceptor drum, so that the developing material can be electrostatically deposited on the photoreceptor drum, including both non-image and image areas, to form a toner layer. The apparatus also includes an electrode member operable to electrostatically remove a portion of the toner layer covering the non-image area, thereby leaving the remaining portion of the toner layer in the image area to form the visible toner image.
摘要:
A color electronic photographic apparatus includes plurality of image forming units, each having a different electrostatic carrier and a different colored toner. Each of the image forming units can be moved to the same image forming position when exposed to light by a light exposing mechanism at the image forming position so as to effect an image forming operation, so that toner images are individually transferred onto a transfer material. In the color electronic photographic apparatus, the image forming units are sequentially moved into the image forming position, and also, the transfer material is reciprocated by the transfer carrying device so that the toner images of each color are properly superposed on the same transfer material.
摘要:
A color electrophotographic apparatus with a developing unit for one color larger than the developing units for the other colors, comprising a first optical path where the laser signals irradiated from a laser exposure device reach a mirror at the central portion of a columnar assembly of image forming units and a second optical path where the laser signals reflected by the mirror reach and expose the photoconductor of the image forming unit at the image forming position formed between two adjacent developing units is provided.
摘要:
A multi-color electrophotographic apparatus is provided which includes a casing having an access cover, an image transfer belt unit for transferring a multi-colored image formed thereon a recording sheet, and an image-forming assembly having a plurality of image-forming units. Each image-forming unit includes a photoconductor and a developer storing therein toner of a single different color for forming a different color toner image on each photoconductor. The image-forming assembly is arranged to be movable between operative and inoperative positions. The operative position is such that each image-forming unit lies at an image-forming station with the photoconductor thereof in engagement with an image transfer belt of the image transfer belt unit to transfer the toner image formed thereon in registration with one another to the image transfer belt for forming the multi-colored image. The inoperative position is such that all the photoconductors of the image-forming assembly are out of engagement with the image transfer belt for allowing an apparatus operator to unload the image transfer belt unit from the casing through the access cover without damaging each photoconductor due to rubbing with the image transfer belt.
摘要:
A color electrophotographic apparatus using a plurality of image forming units. The entire image forming unit group moves by rotation, and a toner image is transferred on an intermediate transfer belt at an image forming position. The intermediate transfer belt is variable in speed, and while the image forming unit group is moving, it is stopped or runs at low speed. The hopper in the image forming unit is divided into two sections. The toner is supplied the image forming position, and when the toner remainder sensor detects no remaining toner, the image forming unit group rotates by one revolution or more, and then the toner remainder is detected again to judge presence or absence of toner remainder. At this time, the toner in the toner hopper is agitated by the agitating member and the shape of the inner wall. After rotary move of the image forming unit group, each image forming unit is initialized sequentially. The side walls of the signal light optical path are composed of image forming units, and the color of the side walls is black. The gap between two adjacent signal forming units is 20 mm or less. One erase lamp of the photosensitive member is provided near the image forming position. During rotary motion of the image forming unit group, it is controlled so as not to disturb the toner image on the intermediate transfer belt.
摘要:
It is intended to provide a remedy for diseases caused by macrophages with dysfunction or mediated by macrophages. Namely, a remedy which activates the phagocytic capacity of macrophages and thus is efficiently incorporated into the macrophages due to the vigorous phagocytosis. As a result, the macrophages with dysfunction are normalized, macrophages infected with a pathogen are exterminated or a pathogen in the infected macrophages is exterminated.
摘要:
According to the present invention, light from a taking lens is reflected by a quick return mirror in a lateral direction of a body unit. Then, after passing through a screen, the light is reflected toward an upper side of the body unit by a second mirror except part of the light. The light reflected by the second mirror is reflected by a third mirror in a direction opposite to a direction in which the light is reflected by the quick return mirror, and is further reflected by a fourth mirror toward an eyepiece located on a back side of the body unit. Part of the light which passing though the screen is taken by an AF sensor unit provided in rear of the second mirror, and an image formation position of an optical image is detected.
摘要:
An image heating device having a predetermined amount of heat generation with a small electric current. The device comprises a heat-generating roller (1) having magnetism and conductivity, an exciting coil (5) opposed to the peripheral face of the heat-generating roller (1) and adapted for allowing the heat-generating roller (1) to generate heat with electromagnetic induction. The exciting coil (5) is composed of a bundle of 60 copper wires of a 0.2 mm diameter are extended in the direction of the rotation axis of the heat-generating roller (1) and they are circumferentially wound along the circumferential direction of the heat-generating roller (1). The bundled wires are arranged in close contact with each other in the circumferential direction of the heat-generating roller (1) so as to cover the upper half of the heat-generating roller (1).
摘要:
A strobe device in which a damper device is built has a light-emitting portion main unit containing a flash-emitting tube and other members therein supported by a rotational supporting mechanism having rotational damper functions. The rotational supporting mechanism includes a rotational shaft fixed to the light-emitting portion main unit and a bearing tube fixed to the camera main unit to which the rotational shaft is fit with a slight gap therebetween. Grease is filled and sealed in the gap between the rotational shaft and the bearing, thus configuring the rotational supporting mechanism. When the light-emitting portion main unit rotates toward a pop-up position due to the pressing force of a spring, friction torque of the rotational supporting mechanism acts to suppress the moving speed, and bouncing at the pop-up position is prevented.
摘要:
A flash apparatus is provided with a flash tube of the point light source type, a reflector, and a diffuser panel. The reflector reflects light flux from the flash tube forward. The diffuser panel is placed in a light flux passing position in front of the flash tube and the reflector and diffuses the light flux from the flash tube. The diffuser panel is so formed that diffusion angles of the light flux can vary with positions between a center corresponding to a light-emitting axis of the flash tube to a periphery concerning an area where the light flux from the flash tube passes.