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| Number | Title | Issue Date |
| 8099026 | Development device and image forming apparatus capable of reducing stress applied to developer A development device includes a development roller, a developer storage, a first rotating member, a second rotating member, and a rotation speed adjuster. The development roller carries a developer containing non-magnetic toner and magnetic carrier. The developer st... | 01/17/2012 |
| 8036576 | Developing device including a stirring mechanism for a two-component developer and image forming apparatus including same A developing device including a developing unit configured to develop an electrostatic latent image formed on a latent image bearing member with a developer comprising a toner and a carrier, and a circulation unit configured to collect the developer from the develop... | 10/11/2011 |
| 7991331 | Developing unit, visualized image formation unit and image forming apparatus A developing unit includes a developer consumption calculator calculating consumptions of developer in zones and storing the consumption in each zone into a corresponding storage region; a consumption shift unit shifting the consumption stored in the storage region ... | 08/02/2011 |
| 7925188 | Development device, process cartridge, and image forming apparatus using the development device A novel development device includes a developer roller, a developer reservoir, a rotatable conveyor, and a replenisher unit. The developer roller is configured to supply toner particles to the electrostatic latent image. The developer reservoir is configured to hold... | 04/12/2011 |
| 7860435 | Developing device A developing device includes a developing tank having a developing region tank and an agitating region tank, a partition wall member, a first agitating and conveying member, a second agitating and conveying member, a first intermediate wall member, a second intermed... | 12/28/2010 |
| 7853181 | Developing unit and image forming apparatus using the same A developing unit for visualizing an electrostatic latent image formed on a photoreceptor drum with a toner, includes: a hopper for storing a developer; a developing roller for supplying the toner to a photoreceptor drum on which an electrostatic latent image is for... | 12/14/2010 |
| 7826776 | Development apparatus and image forming apparatus employing the same A development apparatus includes three developer conveyance paths with separate functions for the supply, recovery and agitation of a developer, respectively, in which a reduction in size of the apparatus can be achieved. An image forming apparatus includes the deve... | 11/02/2010 |
| 7783232 | Developing device, image forming apparatus and method for filling developer In a trickle developing device that uses a two-component developer, a simple configuration is adopted to prevent carrier from being discharged without being used. The developing device having stirring members for conveying and stirring developer and a developer hold... | 08/24/2010 |
| 7734229 | Toner replenishing method, toner replenishing apparatus, and computer readable recording medium A pixel count section calculates a coverage rate corresponding to toner consumption. A control coefficient value setting section determines, based on the coverage rate, a stop threshold value representing reference concentration for toner replenishment and replenish... | 06/08/2010 |
| 7493069 | Developing apparatus and image forming apparatus provided with the same The developing apparatus includes a developing container in which a developer containing a toner and a carrier is stored, a developing roller which carries the developer, and agitating transporting members which circulate and transport the developer along a rotary a... | 02/17/2009 |
| 7437101 | Toner container and toner filling method A toner container which is mountable and removable at a main body of an image forming apparatus, the toner container comprising: at least one toner filling port provided in a casing body of the toner container; and a sealing member which covers the toner filling por... | 10/14/2008 |
| 7428398 | Development sub-system in-line cleaning system An electrophotographic printing machine of the type in which an electrostatic latent image recorded on a charge retentive surface is developed with toner particles to form a visible image thereof, including: a toner dispenser; a donor member for transporting toner f... | 09/23/2008 |
| 7369796 | Developer apparatus, image forming apparatus and toner supplying method An image forming apparatus includes a first mixer 24a that conveys developer in the first direction while stirring the developer. Recycled toner delivered from a delivery opening 116b of a photosensitive drum cleaner 116 is supplie... | 05/06/2008 |
| 7362989 | Developing apparatus for image forming apparatus The developing apparatus includes developer containing parts and a replenishment portion. The developer containing parts contains a developer circularly conveyed in the developer containing parts. The replenishment portion includes a replenish aperture and a regulat... | 04/22/2008 |
| 7333755 | Developing device having developer supply unit and image forming apparatus A developing device includes a developing unit for attaching developer to a latent image formed on an image bearing body to form a visible image; a developer supply unit for supplying the developer to the developing unit; and a plurality of developer transporting un... | 02/19/2008 |
| 7333744 | Image forming apparatus that charges a photosensitive member by superimposing an alternate current bias voltage on a direct current bias voltage as the charge bias voltage A charge apparatus charges by uniformly superimposing an alternate current bias voltage with a fixed frequency over a direct current bias voltage as the charge bias voltage on a photosensitive member. An exposure apparatus exposes the surface of the charged photosen... | 02/19/2008 |
| 7263325 | Auger for use in an image forming device A helical auger member for transporting toner in an image forming apparatus. The auger member may be implemented as part of a waste toner removal system for removing toner from a photoconductive member of a toner cartridge. Toner that is removed by a cleaner member ... | 08/28/2007 |
| 7251440 | Development apparatus and image formation apparatus A development apparatus has: a housing in which a developer supplying/collecting unit and a developer stirring unit are arranged with a circular passage for carrying developer; a developer carrying member placed at a front side of the developer supplying/collecting ... | 07/31/2007 |
| 7248825 | Developer replenishing apparatus A developer replenishing apparatus including a first developer container for containing a developer to be replenished to a developing apparatus, a second developer container for containing the developer to be replenished to the first developer container, a first rep... | 07/24/2007 |
| 7248824 | Conveyor device and image forming apparatus A toner-conveying device includes a movable plate. The movable plate is movable between a holding position such as to couple a cap of a toner container to a nozzle when the toner container is supported by a container holder, and a retreating position such as not to ... | 07/24/2007 |
| 7197267 | Image forming apparatus and control method using a two-component developer A CPU controls a shutter of a developing device so as to enable movement of a developer between a first chamber and a second chamber that store the developer. The CPU rotates a developing roller and mixers of the first and second chambers for a predetermined time T,... | 03/27/2007 |
| 7167667 | Developing apparatus and electrostatic recording apparatus using the same A developing apparatus characterized in being constituted to satisfy Equation (1) shown below when an amount of a developer carried by 1 pitch of a carrying member of an auger or the like is designated by notation W(g), a toner amount supplied by 1 pitch during a ti... | 01/23/2007 |
| 7137730 | Electrographic ribbon blender and method According to the various aspects of the invention, a method and apparatus for mixing electrographic developer is provided. An elongate shaft having two ends and an intermediate location between the two ends is rotated. Developer is moved away from the intermediate l... | 11/21/2006 |
| 7072607 | Developing apparatus A developing apparatus includes a developer carrying member for carrying a developer to develop an electrostatic latent image formed on and image bearing member, the developer carrying member having an elastic property; scraping/supplying member, contacted into the ... | 07/04/2006 |
| 7031644 | Image forming apparatus In an image forming apparatus, the level of the rotational axis of a third mixer 26a that conveys and stirs recycle toner is set to be lower than the level of the rotational axis of a second mixer 25a at a communicating region with a seco... | 04/18/2006 |
| 7024151 | Image forming apparatus and toner stirring method The image forming apparatus has a communicating portion from the first chamber 24 to the second chamber 25, and a communicating portion from the first chamber 24 to the third chamber 26, which are separated from each other. With this stru... | 04/04/2006 |
| 7006784 | Image forming apparatus and toner stirring method In an image forming apparatus, the distance of stirring and conveyance of recycle toner that is recovered from a photosensitive drum is made greater than the distance of stirring and conveyance of fresh toner. It is thus possible to prevent non-charged toner from be... | 02/28/2006 |
| 6978106 | Developing apparatus having modified developer carrying capability A developing apparatus having a developing container for containing developer including toner and carrier, and developing an electrostatic image formed on an image bearing member, includes a carrying member for carrying the developer in the developing container, and... | 12/20/2005 |
| 6965745 | Imaging consumables metering A container for flowable materials includes a first chamber storing flowable material within the container. A second chamber is separated from the first chamber within the container and contains a stirrer. A metering mechanism permits selective transfer of flowable ... | 11/15/2005 |
| 6936394 | Replenishing developer and developing method An electrostatic latent image on an image-bearing member is developed with a two-component developer comprising a toner and a carrier stored in a developer vessel while supplying as required a replenishing developer to the developer vessel. The replenishing develope... | 08/30/2005 |
| 6795660 | Developer replenishment unit and image formation apparatus An image formation apparatus includes a developing unit for developing latent image, and a reserve tank that temporarily stores developer ejected from a first cartridge and a second cartridge and that discharges the developer to the developing unit. The reserve tank... | 09/21/2004 |
| 6560430 | Developing unit having an opening allowing toner to fall directly onto a developing member and supplying member contact area A developing unit is disposed substantially directly under a toner chamber and receives toner through an opening formed in the toner chamber, and includes a developing roller, a supplying roller, and a developing blade. The developing roller supplies tone... | 05/06/2003 |
| 6421516 | Developing device and image forming apparatus having a restricted developer surface level feature A developing device and an image forming apparatus includes a developer container for containing a developer made up of magnetic particles and a toner; a developer carrier for bearing and transporting the developer; a first agitating and transporting unit... | 07/16/2002 |
| 6415125 | Developing apparatus featuring an area where a partly exposed developer agitating member and conveying member are disposed A developing apparatus and an image forming apparatus for agitating a two-component developer throughly in a short time, feeds a developer with an even toner concentration to a developer bearing body and stably forms a high-quality image free from defects... | 07/02/2002 |
| 6345163 | Developing device for image forming apparatus A developing device for use in an image forming apparatus has control means operatively responsive to receipt of an output signal of a first toner density detector means provided in a development unit for driving developing powder delivery means provided ... | 02/05/2002 |
| 6122472 | Developing apparatus having improved developer distribution The present invention is to provide a developing apparatus having a supply screw and a recovery screw both of which are arranged vertically to circulate developer, wherein a component in a normal direction of pressure generated by the recovery screw is ma... | 09/19/2000 |
| 5881345 | Image forming machine An image forming machine, including an image bearing member, a developing unit for developing a latent electrostatic image on the image bearing member into a toner image, a cleaning unit for removing remaining toner from the image bearing member after tra... | 03/09/1999 |
| 5867756 | Developing device with an auger roller for providing a fresh and consistent stream of developer in an image forming apparatus A developing device for use in an image forming apparatus is constructed such that a pair of upper and lower auger rollers 35 and 34 are arranged in the vicinity of a toner supply port 21A, thereby to transport toner from the toner supply port 21A through... | 02/02/1999 |
| 5734952 | Developing device for an image forming apparatus and toner cartridge for replenishing a fresh toner to the developing device A developing device for an electrophotographic image forming apparatus and a toner cartridge for replenishing a fresh toner to the developing device are disclosed. A toner is circulated between a toner cartridge and a hopper so that an additive included i... | 03/31/1998 |
| 5734957 | Image forming apparatus with toner re-use feature An image forming apparatus for forming an image on a recording medium includes an image bearing member, a developing device for developing a latent image formed on the image bearing member, a toner container for containing non-used toner to be used in dev... | 03/31/1998 |
