Patent application number | Description | Published |
20090041507 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME - A developing device of the present invention has a toner supply opening in a first carrying path and in the upstream of the developer carrying direction of a first carrying screw which is further from a developing roller; and a moquette member having feathers on its surface, and being provided, along the developer carrying direction, on the first carrying path. With this arrangement, it is possible to realize a compact developing device having a simple arrangement in which the supplied toner is speedily mixed with the preexisted developer, and the stable toner which is uniformly dispersed and charged can be speedily supplied for development. | 02-12-2009 |
20090202276 | TONER REPLENISHING APPARATUS AND IMAGE FORMING APPARATUS - A toner replenishing apparatus capable of, without increasing a drive torque for rotating the toner replenishing container, scraping toner adhered in a toner replenishing container to reduce the quantity of residual toner that remains unfed from the toner replenishing container, is provided. The toner replenishing apparatus includes a toner replenishing container for replenishing toner stored therein to a developing section by rotation of the toner replenishing container, a magnetic body movably provided in the toner replenishing container, and a magnet disposed closely to an outer peripheral surface of the toner replenishing container and attracting the magnetic body with a magnetic force. | 08-13-2009 |
20090208253 | TONER BOTTLE AND IMAGE FORMING APPARATUS - A toner bottle includes a bottle main body for discharging toner contained therein by rotation of the bottle main body and a scraping member disposed inside the bottle main body for rubbing the inner wall surface of the bottle main body 20 by rotation of the bottle main body. A shaft section for supporting a rubbing section included in the scraping member has an inclined support section extending with a predetermined angle inclined in a direction deviating from a direction in which an axis of rotation of the bottle main body extends. | 08-20-2009 |
20090285505 | IMAGE PROCESSING METHOD, IMAGE PROCESSING APPARATUS, AND IMAGE FORMING APPARATUS - When a predetermined processing is performed on image data, a target area to be subjected to the predetermined processing in an image based on the image data is received, the predetermined processing is performed only on the target area, a position of a processed image in the target area where the predetermined processing is performed is changed, and the processed image and a non-target image in a non-target area except for the target area are synthesized with each other. When the synthesis is performed, an overlapped area where the non-target image and the processed image overlap with each other is extracted, and processing for reflecting image density data of the processed image and that of the non-target image at a predetermined ratio is performed, with respect to the extracted overlapped area. | 11-19-2009 |
20090285605 | TONER REPLENISHING APPARATUS AND IMAGE FORMING APPARATUS - A toner replenishing apparatus is provided. The toner replenishing apparatus includes a toner replenishing container for replenishing toner stored therein to a developing section by a rotation of the container itself, a toner scraping member provided to be movable without being fixed in the toner replenishing container and to rub against an inner wall surface of the container, including a plurality of magnetic bodies arranged in a predetermined direction and a support section that extends in an arranging direction of the magnetic bodies and supports an one end portion of each of the magnetic bodies, and a magnet for attracting the magnetic bodies with a magnetic force, disposed along an outer peripheral surface of the toner replenishing container. | 11-19-2009 |
20100003056 | TONER CARTRIDGE AND IMAGE FORMING APPARATUS USING THE SAME - A toner cartridge is provided removably fitted to a toner supply pipe for supplying toner to a developing device. The toner cartridge includes, as a toner discharging mechanism, a toner discharging portion having a toner discharge port, a toner conveyor screw for conveying toner inside toner container and a shutter for opening and closing the toner discharge port. The shutter has a loosening member. When the toner cartridge is fitted to the toner supply pipe, the loosening member moves inside the toner container as the shutter moves along the toner discharge port. | 01-07-2010 |
20100226689 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS USING THE SAME - A developing device includes a developing vessel for storing a developer, a first conveying passage, a second conveying passage, a first conveying member and a second conveying member to supply toner to a photoreceptor drum. The first conveying member includes a first rotary shaft and a first multi-helically structured blade. The first multi-helically structured blade includes a first inner helical blade and ring-shaped first outer helical blade. The first inner helical blade is formed so that the radius of the helical blade varies cyclically. The second helical pitch of the first outer helical blade is smaller than the first helical pitch of the first inner helical blade. The first outer helical blade inscribes the outer periphery of the first inner helical blade at its minimum radius portions. | 09-09-2010 |
20100322670 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS USING THE SAME - The developing device includes: a developing container for storing a developer; first and second conveying passages that are formed in the developing container and sectioned by a partition; first and second conveying members disposed inside the first and second conveying passages, respectively, to agitate and circulatively convey the developer through the first and second conveying passages in opposite directions; a developing roller that supplies the developer in the second developer conveying passage to a photoreceptor drum; first and second communication paths that connect between the first and second conveying passages at both ends of the partition; and, a developer flow regulator that regulates the flow of developer moving from the first conveying passage to the second conveying passage, in accordance with the height of the developer surface of the developer. | 12-23-2010 |
20110026974 | TONER CARTRIDGE AND IMAGE FORMING APPARATUS INCLUDING THE SAME - A toner stirring section provided in a toner cartridge includes a first rotating body and a second rotating body. The first rotating body is rotated around an axis J | 02-03-2011 |
20110064481 | TONER CARTRIDGE AND IMAGE FORMING APPARATUS USING THE SAME - A toner cartridge includes a container for containing toner, a toner discharge section having a toner discharge port, an auger screw provided in the container, for conveying toner in the container to the toner discharge section, a shutter for opening and closing the toner discharge port, and a toner flowing-out preventing member provided in a communicating part between the container and the toner discharge section, for preventing flowing out of toner by closing an opening of the communicating part. The toner flowing-out preventing member is configured so as to open the opening in conjunction with an opening operation of the shutter. | 03-17-2011 |
20110064482 | TONER CARTRIDGE AND IMAGE FORMING APPARATUS USING THE SAME - A toner cartridge includes a toner container for containing toner, a toner discharge section provided on one side part of the toner container and having a toner discharge port, an auger screw provided in the toner container, for conveying toner in the toner container to the toner discharge section, and a toner flowing-out preventing valve provided in a communicating part between the toner container and the toner discharge section to prevent flowing out of toner. The toner flowing-out preventing valve is configured to open and close the communicating part in conjunction with rotation of the auger screw. | 03-17-2011 |
20110182624 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS USING THE DEVELOPING DEVICE - A developing device includes a developer container for containing a developer including a toner and a magnetic carrier; a developer conveying path provided in the developer container; a developer conveying member, provided in the developer conveying path, for agitating and conveying the developer; and a developing roller for holding the agitated developer so that the toner included in the developer is supplied to a photoconductor drum, wherein the developer conveying member includes a rotating shaft, and an undulated helical blade provided along an outer circumference of the rotating shaft. | 07-28-2011 |
20110188894 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device and an image forming apparatus which suppress unevenness of image density are provided. A developing device includes a developer tank storing a developer, a first conveying member and a second conveying member conveying the developer, and a developing roller bearing the developer thereon. In the developing device, the first conveying member is constituted by a first rotating shaft and a plurality of first conveying blades provided along a first imaginary spiral surrounding the outer periphery of the first rotating shaft and advancing in the axial direction of the first rotating shaft at a predetermined lead angle θ | 08-04-2011 |
20110229213 | TONER DISCHARGING DEVICE, TONER CARTRIDGE, AND IMAGE FORMING APPARATUS - A toner discharging device, a toner cartridge, and an image forming apparatus in which the occurrence of the locking phenomenon is prevented are provided. A toner discharging device includes a discharge container including a wall portion which defines an inner space and has a reception port and a discharge port, and a discharge member which includes an inner spiral blade moving toner in a direction H | 09-22-2011 |
20110255907 | TONER DISCHARGING DEVICE, TONER CARTRIDGE AND IMAGE FORMING APPARATUS - A toner discharging device, a toner cartridge and an image forming apparatus in which occurrence of a locking phenomenon can be suppressed are provided. A toner discharging device includes a discharge container having a wall portion which defines an internal space thereof and has a reception port and a discharge port, and a discharge member including a rotation shaft and a discharge blade as a decay spiral blade. At least a part of the wall portion of the discharge container surrounds the discharge blade along an axial line direction of the rotation shaft, and the discharge port is formed on the part of the wall portion. | 10-20-2011 |
20110286769 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developer tank of a developing device is partitioned into a first conveyance path, a second conveyance path, a first communicating path and a second communicating path with a partition. A first developer conveying member that conveys a developer in a first developer conveying direction is provided in the first conveyance path. A second developer conveying member that conveys the developer in a second developer conveying direction is provided in the second conveyance path. In the first developer conveying member, a double spiral blade is provided on a downstream side in the first developer conveying direction from a first conveying blade of the first developer conveying member, the double spiral blade including an inner spiral blade that conveys the developer in a first direction and an outer spiral blade that conveys the developer in a second direction. | 11-24-2011 |
20110305484 | DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME - A development device comprising a developer conveying member and a developer raking member that are rotatably disposed in the developer conveyance path to conveying and agitating the developer in the developer conveyance paths, wherein the developer conveyance path includes first and second developer conveyance paths and first and second communication paths that communicating the first and second developer conveyance paths on both sides, the developer conveying member includes first and second developer conveying members that are disposed in the first and second developer conveyance paths, the developer raking member is disposed in at least one of the first and second communication paths. | 12-15-2011 |
20120027467 | TONER CARTRIDGE AND IMAGE FORMING APPARATUS USING THE SAME - A toner cartridge includes a toner containing section which contains a toner therein; a toner discharging unit which is disposed in one side of the toner containing section and has a toner discharging port; a screw member which is disposed inside the toner containing section and transports a toner inside the toner containing section to the toner discharging unit; a bearing member which holds an end of the screw member; a rotary shutter which is disposed in the toner discharging unit to be rotatable about a rotation axial line of the screw member and has a circular-arc-shaped cross-section; and a shutter opening and closing mechanism which opens the rotary shutter in conjunction with rotation of the screw member. | 02-02-2012 |
20120045252 | DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS PROVIDED THEREWITH - A development device mounted on an electrophotographic image forming apparatus including a photoconductive drum in which an electrostatic latent image is formed on a surface thereof, the development device comprising: a developer tank; a development roller that is provided in the developer tank; first and second developer conveying paths; and first and second developer conveying spiral members that conveying the developer in the circulating manner in the first and second developer conveying paths, wherein at least one of the first and second developer conveying spiral members further includes an end blade that is provided at one end of the rotary shaft, the end blade includes: a spiral blade portion that is fixed to the circumferential surface of the rotary shaft; and a circumferential agitating plate portion that is fixed to a circumferential portion of the spiral blade portion. | 02-23-2012 |
20120063813 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device that is capable of securing an amount of developer that can be stored in a developer tank while suppressing the bending of a developer conveying section, as well as an image forming apparatus are provided. In a developer tank of a developing device, there is provided a first developer conveying section that includes a first rotation shaft member having a columnar shape in which grooves extending in an axial line direction are formed, and a first spiral blade that is spirally wound around the first rotation shaft member and conveys the developer by rotation around the axial line of the first rotation shaft member. | 03-15-2012 |
20120163873 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - In a developing device including a developer tank and a developing roller, an internal space of the developer tank is divided by a partition wall into a first conveying path, a second conveying path, a communication path and a pumping path. In the pumping path, there is disposed a developer pumping section including a pumping spiral blade, a pumping rotation shaft member, and a pumping gear. A developer in the pumping path is pumped up by the developer pumping section, so that a part of the developer is moved to a side of the first conveying path while another part of the developer is moved to a side of the second conveying path. | 06-28-2012 |
20120189353 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device includes a developer tank and a developing roller. An internal space of the developer tank is divided into a first conveying path, a second conveying path, a first communication path, and a second communication path by a partition wall. In the first conveying path, there is disposed a first developer conveying section that conveys the developer within the developer tank in a conveying direction X. In the second conveying path, there is disposed a second developer conveying section that conveys the developer within the developer tank in a conveying direction Y. The first developer conveying section includes an inner spiral blade, an outer spiral blade, an upstream spiral blade, a rotation tube, a delivery portion, support members, and a first gear. The rotation tube has an admission port portion and a discharge port portion. | 07-26-2012 |
20120219327 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - In a developing device including a developer tank and a developing roller, an internal space of the developer tank is divided into a first conveying path, a second conveying path, a first communication path and a second communication path, by a partition wall. A first developer conveying section which conveys a developer in the developer tank in a conveying direction X is disposed in the first conveying path. A second developer conveying section which conveys the developer in the developer tank in a conveying direction Y is disposed in the second conveying path. The first developer conveying section includes a plurality of inner spiral blade pieces, a rotation tube, an upstream spiral blade, a downstream spiral blade, support members, and a first gear. | 08-30-2012 |