摘要:
An electrophotographic printing apparatus is provided. This printing apparatus includes a photosensitive medium designed to form thereon an electrostatic latent image, a developing roller designed to tone the electrostatic latent image with a toner to form a toner image on the photosensitive medium, a driving mechanism for driving the developing roller for rotation, a transport mechanism for moving the developing roller into engagement and disengagement with and from the photosensitive medium for the formation of the toner image thereon, and a control unit adapted to control the driving mechanism to rotate the developing roller immediately before the developing roller is brought by the transport mechanism into engagement with the photosensitive medium, and controls the driving mechanism to stop the developing roller from rotating immediately after the developing roller is moved by the transport mechanism away from the photosensitive medium.
摘要:
In manual copying mode, recording paper that has undergone image formation passes along a main body ejection path and is ejected onto a main body ejection platform of a main body ejection section by main body ejection rollers, and in automatic copying mode and external input print mode, recording paper that has undergone image formation passes along a top ejection path and is ejected onto a top ejection platform of a top ejection section by top ejection rollers. By thus having recording paper with a high image forming frequency that has undergone image formation by means of the aforementioned automatic copying mode or external input print mode ejected into top ejection section positioned on the upper part of the main body of the apparatus by means of top ejection mode, checking and removal of recording paper are facilitated and convenience is improved.
摘要:
A color image formation apparatus includes a plurality of stages of photosensitive drums provided for respective developing agents, the photosensitive drums arranged in a predetermined direction; and developer units which are provided for respective photosensitive drums and which develop electrostatic latent images formed on the photosensitive drums, wherein an overlap exists in the predetermined direction between a portion of each photosensitive drum and a portion of the developer unit provided so as to correspond to an adjacent photosensitive drum.
摘要:
A printing apparatus includes, a first body including a reader for reading an information on a first workpiece, and a printer for printing an image on a second workpiece, and a second body swingable relative to the first body on a swing axis over the reader to cover and uncover the reader, wherein the printing apparatus further includes a workpiece transfer path for moving therein the second workpiece with the printed image from the printer to the second body.
摘要:
A downsized and flattened exposure device is provided. A substrate (301) is supported only at either one side in the width direction (403) of the substrate surface that is orthogonal to the direction of the row and supported by only one enclosing member (201) at least in the section in the direction of the row of light emitting elements (401) where the light emitting elements (401) are arranged. With this structure, even if the substrate is supported at multiple points, the substrate is subject to almost no distortion due to multipoint support, allowing the substrate to have a reduced size in the width direction, further downsizing and flattening the exposure device.
摘要:
The present invention holds the source document feeding direction downstream edge of a printed sheet ejected above a source document feed tray by means of a top ejection platform functioning as a printed sheet holding section in an area apart from source document feed rollers functioning as a source document feeding section. As a result, a printed sheet ejected onto top ejection platform is not fed automatically by source document feed rollers. Therefore, a printed sheet that has undergone image formation can be ejected without obstruction above source document feed tray of an automatic document feeder, checking and removal of a printed sheet are facilitated, and convenience is improved.
摘要:
In order to resolve the problem, an image forming apparatus of the invention is constructed by a constitution including exposing means including an exposure head comprising an organic electroluminescence element including at least an anode for injecting a hole, a luminescent layer having a luminescent region and a cathode for injecting an electron on a board, a photosensitive member formed with an electrostatic latent image by exposing light of the exposing means, developing means for forming a toner image on the photosensitive member by supplying a toner to the electrostatic latent image and cooling means for cooling the organic electroluminescence element. The organic electroluminescence element is cooled by the cooling means in this way and therefore, the temperature of the organic electroluminescence element can be controlled.
摘要:
A drive transmission apparatus includes a first gear for transmitting a driving force to a first rotatable body, a second gear for transmitting the driving force to a second rotatable body and a third gear to which the driving force is transmitted from a driving source, the first, second and third gears being coaxially arranged. A first connecting member passes through the second gear and connects the first gear and the third gear. A cylindrical second connecting member is supported by the first connecting member located inside the second connecting member and connects the second gear and the third gear. The arrangement is such that the fluctuation in rotating speed of the second gear may be transmitted to the first gear through the second connecting member, the third gear and the first connecting member.
摘要:
An electrophotographic apparatus equipped with a photosensitive device rotatable which is responsive to exposure light so as to allow formation of a toner image thereon and an intermediate transfer device rotatable which is brought into contact with the photosensitive device so that the toner image formed on the photosensitive device are transferred onto a surface of the intermediate transfer device. The photosensitive device has a reference mark indicative of a predetermined position in its rotational direction and the intermediate transfer device also has a reference mark representative of a predetermined position in its rotational direction. These reference marks are detected by first and second reference position sensors, thereby measuring the rotational periods of the photosensitive device and the intermediate transfer device so as to calculate a difference therebetween. A control section controls start timings of the formations of the toner images on the photosensitive device on the basis of the calculated period difference as time periods from the time that the first reference position sensor detects the reference mark of the photosensitive device.
摘要:
An electrophotographic system for use as a laser beam printer, a copying machine, or the like has an image carrier for receiving an electrostatic latent image, a developing device for developing the electrostatic latent image into a toner image with toner, and a toner hopper for storing into a toner, and a toner hopper for storing the toner. A plurality of toner feeders is disposed in the toner hopper, for supplying the toner from the toner hopper to the developing device. The toner feeders being successively arranged with respect to the developing device such that those toner feeders which are disposed more remotely from the developing device feed progressively smaller amounts of toner. The toner feeders are rotatable to feed the toner to the developing device, and the toner feeders which are disposed more remotely from the developing device rotate at progressively lower speeds or have progressively smaller areas of contact with the toner. Since the amounts of toner fed by the toner feeders are progressively smaller the more remotely disposed from the developing device they are, the amount of toner supplied to a toner feeder is smaller than the amount of toner fed by the toner feeder, which prevents the toner from being aggregated in the toner hopper.