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| Number | Title | Issue Date |
| 8326189 | Developing device, process cartridge, and image forming apparatus There is provided a separation member for separating a first conveying path formed by a first conveying member from a second conveying path formed by a second conveying member. There is also provided an opposed member facing a magnetic pole H4 at an upstream ... | 12/04/2012 |
| 8320803 | Developing device and cartridge A developing device includes a developing container for accommodating a developer; a developer carrying member, provided rotatably in the developing container, for carrying and feeding the developer to develop an electrostatic image; a developer feeding member, incl... | 11/27/2012 |
| 8290409 | Developer station for an electrographic printer having reduced developer agitation A developer station and method for an electrographic printer is provided that reduces developer agitation. The developer station includes a sump of magnetic developer, and a magnetic brush roller mounted above sump and having a rotatable magnetic core surrounded by ... | 10/16/2012 |
| 8229333 | Developer system and method for providing a stable flow rate of developer in an electrographic printer A developer system and method for an electrographic printer is provided. The system includes a magnetic brush having a magnetic core surrounded by a toning shell that rotatably conveys a layer of developer to the photoconductor element; a sump containing a reservoir... | 07/24/2012 |
| 8073368 | Development device and image forming apparatus A development device includes a developer carrier, and a developer conveyance path. The developer carrier carries and conveys developer having a magnetic property. The developer carrier includes a plurality of magnetic poles provided inside the development carrier. ... | 12/06/2011 |
| 7995956 | Developer system and method for providing variable flow rate of developer in an electrographic printer A developer system and method for an electrographic printer is provided that provides a variable rate of developer flow to the photoconductor drum of the printer. The system includes a magnetic brush having a magnetic core surrounded by a toning shell that rotatably... | 08/09/2011 |
| 7885583 | Development device and image forming apparatus An aspect of the invention provides a development device including a rotatable development sleeve which supplies developer to a photosensitive drum, the development sleeve being disposed such that a rotational axis of the development sleeve is orientated toward a ve... | 02/08/2011 |
| 7865117 | Developer station with smoothing device and method for operating a developer station In a developer station for a printer or copier, a rotating developer roller is provided having a mixture of toner particles and ferromagnetic carrier particles accumulated on a surface of the developer roller as a layer, and a transfer zone at which the toner partic... | 01/04/2011 |
| 7848686 | Developing device and image forming apparatus A developing device uses a two-component developer including at least carriers and toners. The toners are supplied to an image bearing member bearing an electrostatic latent image so that a toner image is developed from the electrostatic latent image. The developing... | 12/07/2010 |
| 7761040 | Image forming apparatus having developer with opposite polarity particles A developing unit using a two-component developer intended to provide an image forming apparatus capable of forming a high-quality image for a long period of time. A developing unit using a developer contains toner, carrier and opposite polarity particles having a p... | 07/20/2010 |
| 7653335 | Developing apparatus and image forming apparatus A compact development apparatus using a two-component developer and an image forming apparatus wherein carrier deterioration is prevented to ensure formation of a high-quality image for a long time. The development apparatus uses the developer made up of a mixture o... | 01/26/2010 |
| 7643778 | Powder transport with a tapered feed roller of an electrostatographic printer An apparatus and method for dispensing toner in an electrostatographic printer includes an apparatus for feeding powder toward the feed apparatus wherein the feed roller includes a tapered feed roller including a shaft and one or more variable height flutes such tha... | 01/05/2010 |
| 7603066 | Developing device and image forming device and preventing toner contamination thereof A developing device including a first developing roller and a roller drive mechanism is disclosed. The first developing roller comprises a tubular sleeve, on the surface of which developer is supplied, and a magnetic roller that comprises a drawing magnetic pole for... | 10/13/2009 |
| 7599649 | Development device and process cartridge including development device A development device configured to develop an electrostatic latent image on an image carrying member with a two-component developer having a toner and a carrier, the development device including: a developer carrying member to carry the two-component developer to a ... | 10/06/2009 |
| 7502580 | Two component development system using ion or electron charged toner A development system for an electrophotographic machine in which uncharged toner is stored in a housing having an opening. A rotatable dispensing roll is mounted in the housing opening. An overhung metering blade mounted at the housing opening meters a layer of unch... | 03/10/2009 |
| 7412194 | Developing apparatus The present invention provides a developing apparatus that can effectively prevent generation of a ghost due to poor detachment of a developer after development, and generation of unevenness in density between a left part and a right part of an image region due to l... | 08/12/2008 |
| 7373098 | Toner cartridge and electrophotographic printer employing the same A toner cartridge horizontally installed in an electrophotographic printer having a photoreceptor drum where an electrostatic latent image is formed by charging and exposure, and contributing to toner supply and development by being fixedly coupled to in the electro... | 05/13/2008 |
| 7332256 | Image forming method and image forming apparatus An image forming method includes: forming an electrostatic latent image after charging an organic photoconductor; and developing the electrostatic latent image into a toner image by bringing a developer containing toner and a carrier having a weight average particle... | 02/19/2008 |
| 7298995 | Developing device used in an image forming apparatus The developing device 100 includes a stirrer and transferor 122, 124, a magnetic roller 130, and a developing roller 140, that are disposed in a housing 110 which contains the two-component developing agent including the magnetic c... | 11/20/2007 |
| 7277666 | Developing apparatus with two toner-supplying bodies that periodically coact A developing apparatus includes a developing roller, a toner-supplying roller, and at least one toner-supplying member. The developing roller develops an electrostatic latent image formed on a photoconductive drum with toner. The toner-supplying roller is formed of ... | 10/02/2007 |
| 7251423 | Image forming apparatus and image forming method Optimization of a density control factor accompanying formation of a patch image is executed every time a predetermined period of time elapses since the end of a preceding image forming operation. Since an image is formed at regular intervals in this manner, it is p... | 07/31/2007 |
| 7231168 | Image forming apparatus An image forming apparatus which can stably form an image of high quality by the use of a first developer carrying member and a second developer carrying member. On the first developer carrying member, development is performed by a method whereby a magnetic carrier ... | 06/12/2007 |
| 7224926 | Flight developer regulating member, developing apparatus and method of assembling developing apparatus A developing apparatus including a developer carrying member, a developer layer regulating member and a flight developer regulating member, wherein the developer carrying member is provided in opposed relationship with an image bearing member and carries a developer... | 05/29/2007 |
| 7221892 | Developing device used in image forming device A developing device includes a removing roller positioned vertically above a supplying roller and in contact with a developing roller. Positively charged toner is supplied from the supplying roller to the developing roller and then supplied to a photosensitive drum ... | 05/22/2007 |
| 7058344 | Developing apparatus A developing apparatus supplies a developer from a developing roller to an image-bearing body that bears an electrostatic latent image thereon. A toner-supplying roller is rotatably supported to oppose the developing roller. A rotating body has recesses formed in it... | 06/06/2006 |
| 7058342 | Developing unit for image forming apparatus A developer for an image forming apparatus includes a developing casing having a plurality of toner chambers to contain toner, an agitator having a resilient wing and rotatably disposed in the toner chamber for agitating and transferring toner, a toner supplying rol... | 06/06/2006 |
| 7050745 | Two-component developer unit of electrophotographic image forming apparatus having lifting guide portion A two-component developer unit of an electrophotographic image forming apparatus includes a developer rectifier having a lifting guide portion and a developer collection guide portion. The lifting guide portion guides a developer agitated by an agitating unit upward... | 05/23/2006 |
| 6947697 | Ultrasonic vibration tool, fixing device, and heating device An ultrasonic vibration tool is made of a block of substantially rectangular parallelepiped form, and has its one end face formed as an output end face, and has its other end face opposite the output end face formed as an input end face. An ultrasonic oscillator is ... | 09/20/2005 |
| 6909860 | Image forming apparatus having a gap between toner-supplying and developing rollers An image forming apparatus includes an image bearing drum, a developing roller, a toner-supplying roller, and a controller. The developing roller deposits toner to an electrostatic latent image formed on the image bearing drum. The toner-supplying roller is spaced a... | 06/21/2005 |
| 6902857 | Method for forming electrophotographic image and electrographic device A method for forming an electrophotographic image and a device for forming an image on a transfer material by the steps for charging, exposing, developing and transferring, and recovering the toner remained untransferred in the step for cleaning by recovering, where... | 06/07/2005 |
| 6871035 | Developing apparatus A developing apparatus includes a developer carrying member for carrying a developer; and a developer feeding member, disposed close to or in contact to the developer carrying member, for supplying a developer to the developer carrying member, the developer feeding ... | 03/22/2005 |
| 6821700 | Apparatus and method for non-interactive electrophotographic development and carrier bead composition therefor An apparatus and method for non-interactive, dry powder development of electrostatic images includes an image bearing member bearing an electrostatic image; two component developer comprising toner and permanently magnetized thickly coated carrier beads, the coated ... | 11/23/2004 |
| 6785498 | Development system for developing an image on an image bearing member A development system optimized for efficient development of an electrostatic latent image on an imaging surface. The development system includes a development material sump, a magnetic developer roll including a rotatable sleeve having located therein a rotatable ma... | 08/31/2004 |
| 6763216 | Developing device and image forming apparatus including the same A developing device for feeding a developer stored therein to an image carrier of the present invention includes a sleeve facing the image carrier for causing the developer deposited thereon to contact a latent image formed on the image carrier. A regulating member ... | 07/13/2004 |
| 6736500 | Image forming method and apparatus that form and transfer image of liquid drops of increased viscosity A method of forming an image includes causing a material, that increases a viscosity of liquid drops by contact with the liquid drops, to adhere to a transfer medium, causing a liquid drop to contact the material according to an image signal such that an image is fo... | 05/18/2004 |
| 6701114 | Image forming apparatus and image forming process unit with developer carried on a developer carrier An image forming apparatus of the present invention includes a developing device including a rotatable, nonmagnetic developer carrier and a magnetic field forming device. In a developing region where the developer carrier faces an image carrier, the magne... | 03/02/2004 |
| 6658228 | Image forming apparatus for transferring toner in a developing unit An image forming apparatus includes a housing, a toner hopper, a toner supply source, a magnetic roller, a development sleeve, a doctor blade, an agitator, a rotation arm provided in the agitator, a spoon formed on the tip of the rotation arm, a toner she... | 12/02/2003 |
| 6580882 | Low cost trim-gap-conductivity TC sensor A toner maintenance system for an electrophotographic developer unit, including a sump for storing a quantity of developer material comprised of carrier and toner material; a first member for transporting a mixture of developer material and toner particle... | 06/17/2003 |
| 6571077 | Electrostatic image developing method and apparatus using a drum photoconductor and hard magnetic carriers The invention relates generally to apparatus for electrostatic image development and, in particular, apparatus that implement a magnetic brush with a drum photoconductor. According to an aspect of the invention, a method and apparatus for developing an el... | 05/27/2003 |
| 6512909 | Image forming process and apparatus and control method thereof When image formation is performed by an apparatus comprising: a magnetic roll for generating a magnetic brush by carrier having toner adhering triboelectrically thereto, a developer roll on the surface of which a thin layer of the toner supplied by the ma... | 01/28/2003 |
