Class / Patent application number | Description | Number of patent applications / Date published |
399257000 | Purging | 17 |
20090074470 | WASTE DEVELOPER COLLECTING METHOD FOR IMAGE FORMING APPARATUS - An image forming apparatus includes a horizontal carrying mechanism that collects a waste developer in the horizontal direction, relay carrying mechanisms that carry the waste developer collected by the horizontal carrying mechanism to a desired position, a vertical carrying mechanism that carries the waste developer, which is carried by the relay carrying mechanisms, in the vertical upward direction, and a relay carrying mechanism that feeds the waste developer carried by the vertical carrying mechanism into a storage case. A waste developer flow rate of a waste-developer carrying mechanism at a post stage is equal to or larger than a waste developer flow rate of a waste-developer carrying mechanism at a pre-stage thereof. | 03-19-2009 |
20090123189 | WASTE DEVELOPER COLLECTING DEVICE AND IMAGE FORMING APPARATUS - A waste developer collecting device comprising: a collecting container; a collecting opening; a conveying unit; a filter; a partition wall; and an air inlet. | 05-14-2009 |
20090214267 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD CAPABLE OF AUTOMATICALLY COLLECTING DEVELOPER FROM DEVELOPMENT DEVICE - An image forming apparatus includes an image carrier, a development device, a developer collection device, a detector, and a controller. The image carrier carries a latent image. The development device develops the latent image into a toner image, and includes a developer carrier opposing the image carrier and carrying a developer. The developer collection device collects the developer from the development device when the development device is driven. The detector detects a state in which the developer carrier does not carry the developer. The controller starts driving the image carrier, starts driving the development device to cause the developer collection device to start collecting the developer, and stops driving the image carrier when the detector detects the state in which the developer carrier does not carry the developer, to collect the developer from the development device. | 08-27-2009 |
20100008701 | IMAGE FORMING APPARATUS, DEVELOPING DEVICE AND DEVELOPER DISCHARGE MECHANISM - In order to provide an image forming apparatus capable of maintaining the image quality by making smooth flowability of a surplus developer, which is discharged according to supply of a new developer (toner and carrier), toward a collection box, there are provided a stirring screw that electrify toner by stirring the toner together with a carrier; a casing that supports the stirring screw and stores a developer in which the toner and the carrier are mixed; a inlet used to supply the developer to the casing; a guide that guides the surplus developer discharged from the casing downward; and a reciprocating member that moves on a flow surface of the guide along which the surplus developer flows. | 01-14-2010 |
20100061770 | SIMPLIFIED RESETTING THUMPER ASSEMBLY - This is a thumper assembly that is positioned in a developer station of a xerographic marking system. A waste container connected to a drop tube collects waste developer from this station. A magnet prevents magnetic developer from moving through the tube when the container is removed. Once a new container is installed, the magnet is moved away from the tube thereby allowing magnetic developer lodged therein to again move through the tube. A thumper is moved striking the tube to further dislodge developer and allow this developer to move through the tube into the waste container. | 03-11-2010 |
20100215406 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS USING THE SAME - A developing device includes: a housing that stores a developing agent including toner and a carrier and that is replenished with the toner and the carrier; an agitation conveyance member that rotates the developing agent to thus agitate and convey the developing agent; a developing agent supply member that supplies to a developing area the conveyed developing agent; a first outlet that discharges a superfluous developing agent, which is in excess of first set storage capacity, of the stored developing agent and that is connected to a recovery device for transferring and collecting the superfluous developing agent; a second outlet that discharges an excessive developing agent, which is in excess of second set storage capacity that is larger in amount than the first set storage capacity, of the stored developing agent; a container that stores the excessive developing agent; and a detection unit that detects the stored excessive developing agent. | 08-26-2010 |
20110013944 | DEVELOPING APPARATUS - A developing apparatus includes a developer container to store a developer, a conveyance member to convey the developer, and a discharge port to discharge the developer. The discharge port is at a position that is on one end side from a central portion of the conveyance member with respect to an axial direction of the conveyance member. A first region of the conveyance member may include a portion facing the discharge port that has a conveyance capacity that is lower than a conveyance capacity of a second region or has a conveyance capacity that is zero. The conveyance member includes a positioning unit that is provided on the one end side thereof in the axial direction to position the conveyance member in the axial direction by abutting on the developer container, and an urging unit to urge the positioning unit with respect to the developer container. | 01-20-2011 |
20110176837 | DEVELOPING APPARATUS AND IMAGE FORMING APPARATUS - According to one embodiment, a deteriorated carrier included in a developer circulating in a developer tank is extracted. The extracted deteriorated carrier is guided to an outflow port. | 07-21-2011 |
20110229209 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device having a housing that houses two-component developer containing carrier and toner, replenishing replenishment carrier to the housing while gradually ejecting developer to outside from an outlet. The developing device includes: transport passage provided in the housing so that developer is transported therein; transport member provided in the housing and rotates to transport the developer; ejection passage having diverged from the transport passage so that a part of the developer transported in the transport passage is conveyed therein to the outlet; and restriction unit configured to restrict an amount of ejected developer so that a first amount of developer is ejected from the outlet when the transport member rotates at a first speed, and a second amount of developer is ejected when it rotates at a second speed. The second amount is smaller than the first amount. The second speed is higher than the first speed. | 09-22-2011 |
20120134715 | IMAGE FORMING APPARATUS AND CONTROL METHOD - An image forming apparatus which performs toner discharge control for held toners of respective colors, comprises: an image carrier; a transfer member on which toner images of the respective colors formed on the image carrier are transferred and superposed; a calculation unit configured to calculate toner amounts used to form the toner images of the respective colors; and a control unit configured to superpose toners of at least two colors onto the transfer member when the toner amounts calculated by the calculation unit are smaller than a predetermined consumption amount, wherein the control unit decides a combination of colors of the toners to be superposed in accordance with differences between the toner amounts and the predetermined consumption amount. | 05-31-2012 |
20120163875 | DEVELOPING DEVICE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND DEVELOPER DISCHARGE DEVICE HAVING A DISCHARGE PORT - A developing device, process cartridge and image forming apparatus of a premix developing system, with which developer splashed by the transport member is not discharged from the device, fluctuations of the amount of developer discharged to the outside are not produced, and the output image quality is stable. This developing device is provided with a pocket part, which is installed in a depressed manner facing the outside in relation to the transport route formed by the transport member, and into and out of which part of the developer transported in the transport route flows. This pocket part is provided with a discharge port for discharging developer to outside the device when the surface of the developer flowing into the pocket part exceeds a specified height. | 06-28-2012 |
20140112688 | IMAGE FORMING APPARATUS - An image forming apparatus includes: a developer collecting duct that is linear and has a plurality of coupling portions vertically spaced apart from each other; and a plurality of developer discharging sections that each have an engaging portion inserted into one of the coupling portions to thereby be disposed as being exposed to the inside of the developer collecting duct, and that discharge waste developer to the developer collecting duct through a developer outlet provided in the engaging portion. Second and subsequent ones of the developer discharging sections from the top are detachably attached to the developer collecting duct. The developer collecting duct has a flow path restricting portion that restricts the area through which the waste developer flows down to prevent the waste developer from hitting the engaging portion of lower one of the developer discharging sections. | 04-24-2014 |
20140161490 | DEVELOPMENT DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME - A development device includes a developer container, a developer bearing member, a mixing/transporting member, an opening/closing member, and a drive mechanism. The developer container contains a developer. The developer bearing member is rotatably supported by the developer container. The developer bearing member also has a surface facing an image bearing member on which an electrostatic latent image is to be formed. The developer is borne on the surface of the developer bearing member. The mixing/transporting member mixes and transports the developer in the developer container. The opening/closing member opens and closes a developer outlet for discharging an excess of the developer in the developer container. The drive mechanism drives the opening/closing member in association with driving of the developer bearing member or the mixing/transporting member to open the developer outlet. | 06-12-2014 |
20140348543 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image forming section including an image carrier and a developing device, and a developer recovery mechanism. The developing device includes, a developer carrier, and a developer discharge portion. The image forming section incorporates a developing device employing a first developing method where toner is caused to adhere to the image carrier by a magnetic brush formed on the developer carrier, or a developing device having a toner carrier between the developer carrier and the image carrier, and employing a second developing method where a toner layer is formed on the toner carrier by a magnetic brush formed on the developer carrier, and toner is caused to adhere to the image carrier by the toner layer formed on the toner. These developing devices, in the image forming section, each have a same positional relationship between the developer discharge portion and an image-carrier rotation shaft. | 11-27-2014 |
20160085181 | DEVELOPING DEVICE - A developing device includes a developing container, a feeding member including a blade, and a discharge opening for permitting discharge of an excessive developer, with supply of the developer, from the developing container. The blade is rotatable such that the blade moves downwardly at a side opposing to the discharge opening. A winding direction of the blade is such as to ascend toward the downstream with respect to the developer feeding direction, at the opposing side. A bottom end of the downstream edge of the discharge opening in a first cross-section taken perpendicularly to the rotation shaft is at a higher level than in a second cross-section at an upstream of the first cross-section with respect to the developer feeding direction. | 03-24-2016 |
20160091848 | IMAGE FORMING APPARATUS AND IMAGE FORMING SYSTEM - An image forming apparatus includes a printing section, a storage section, and a control section. The printing section prints a toner image on paper. The storage section stores prescribed image data for which printing is permitted using disposal-scheduled toner that is scheduled for disposal as waste toner. The control section determines whether or not a preset disposal condition is satisfied. Upon determining that the disposal condition is satisfied, the control section determines whether or not prescribed image data is stored in the storage section. Upon determining that prescribed image data is stored in the storage section, the control section sets the operating mode of the printing section as a waste toner reduction mode in which the printing section uses the disposal-scheduled toner to perform printing based on the prescribed image data. | 03-31-2016 |
20160147179 | DEVELOPER DISCHARGING DEVICE FOR IMAGE FORMING APPARATUS - Disclosed is a developer discharging device for an image forming apparatus, which is installed in a developing unit configured to transfer and discharge a developer collected from a drum unit or a newly introduced developer, such that the developer is discharged to a developer collecting unit, including a first discharging part configured to extend from an end of a transferring screw installed in the developing unit, and a second discharging part disposed above the first discharging part in parallel with the first discharging part, wherein the developer discharged from the second discharging part falls into the developer collecting unit. Therefore, it is possible to prevent the developer from being sharply discharged, and thus to constantly maintain an amount of the developer. | 05-26-2016 |