Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 8175502 | Developing device, image forming apparatus and developing roller Described is a developing roller, which makes it possible to appropriately peel developer off the developing roller, even if the developing roller is a small-sized. The developing roller includes a non-magnetic developing sleeve and a magnetic member installed into ... | 05/08/2012 |
| 8126379 | Developing device and image forming apparatus The present invention provides a developing device which is capable of suppressing the generation of a fogging phenomenon and deposition of carrier particles to an electrostatic latent image carrier and developing the electrostatic latent image efficiently, the devi... | 02/28/2012 |
| 8014706 | Developing device, process cartridge, and image forming apparatus A developing device is disclosed. The developing device includes a developing roller disposed to face an image carrier and a toner carrier capturing roller disposed to face the developing roller for capturing toner carriers adhered onto the image carrier. The develo... | 09/06/2011 |
| 7953353 | Developing device, method of producing developing device, and image forming apparatus A developing device includes a magnet roll magnetized with plural magnetic poles including a main magnetic pole, a sleeve in a cylindrical shape which is arranged so as to be opposed to an image holding body, and a supporting frame that stably supports the magnet ro... | 05/31/2011 |
| 7941081 | Developing unit and image forming apparatus using the same A developing unit for developing an electrostatic latent image formed on the outer peripheral surface of a latent image bearer rotating in one direction utilizes an electrified developer that is prepared by mixing two components, or an electrostatically chargeable t... | 05/10/2011 |
| 7929888 | Developing unit and image forming apparatus employing the same A developing unit which forms an image on a photosensitive medium, includes a housing which accommodates a developer, a magnetic cylinder having a catch pole which picks up the developer in the housing by a magnetic force, and a main pole which couples a carrier amo... | 04/19/2011 |
| 7907876 | Developer carrier, development device, process cartridge, and image forming apparatus A developer carrier includes a magnetic field generating device provided with a plurality of magnetic poles including an agent separating pole and a scooping pole, and a cylindrical hollow body accommodating therein the magnetic field generating device and rotated a... | 03/15/2011 |
| 7904009 | Development device and image forming apparatus The development device of this invention includes a developer bearing member, a magnet, and a developer regulation member. The magnet is fixedly disposed within the interior of the developer bearing member. The developer regulation member includes at least a magneti... | 03/08/2011 |
| 7890030 | Magnetic roller, developer carrier, developing device, process cartridge, and image forming apparatus A magnetic roller includes a cylindrical magnetic field generation part (140), a cylindrical support part (143) that contacts both of the edges of the magnetic field generation part (140), further has a smaller diameter than the magnetic field g... | 02/15/2011 |
| 7853186 | Developing apparatus featuring multiple magnetic rollers A developing apparatus in which a first magnet of a first developing sleeve includes a first magnetic pole near a potion opposing to an image bearing member, and a second magnetic pole being downstream of the first magnetic pole; and a second magnet of a second deve... | 12/14/2010 |
| 7813680 | Developing device, and image forming apparatus and process cartridge comprising the same To downsize a developing device in the developing carrier axial direction without generating image concentration irregularities from recirculation of developer in the magnetic roller end regions, an N2 pole and an N3 pole, which are mutually adjacent h... | 10/12/2010 |
| 7787807 | Developing unit and image forming apparatus including the same A developing unit includes a development roller and a magnetic roller. Sleeves of the development roller and the magnetic roller are driven to rotate in the same circumferential direction. A first magnet is provided on the roller shaft in the sleeve of the developme... | 08/31/2010 |
| 7664440 | Developing device and image forming apparatus having the same A developing device and an image forming apparatus capable of restraining density irregularity and restraining a decline in image quality caused by adherence of carrier to a photoreceptor, are provided. An angle α is in a range of no less than 45 degrees nor more t... | 02/16/2010 |
| 7653336 | Developing apparatus featuring multiple magnetic rollers for developing a latent image multiple times A developing apparatus in which a first magnet of a first developing sleeve includes a first magnetic pole near a potion opposing to an image bearing member, and a second magnetic pole being downstream of the first magnetic pole; and a second magnet of a second deve... | 01/26/2010 |
| 7620352 | Developing device having a projection portion for inhibiting scattering a developer and image forming apparatus using such developing device A developing device comprises: a case having a developing opening; a cylindrical-shaped developer carry member disposed exposed in part to the developing opening, and rotatable for holding and carrying a developer; and a magnet member disposed fixed within the devel... | 11/17/2009 |
| 7577388 | Developing roller, and developing device and image-forming apparatus using the same A developing roller includes (I) a developing sleeve that is made of nonmagnetic material, and that holds and conveys a developer; and (II) a magnetic member that is fixed inside the developing sleeve, wherein the magnetic member includes (i) a development magnetic ... | 08/18/2009 |
| 7536141 | Developing device, process cartridge and image forming apparatus A developing device of the present invention includes a photosensitive drum and a developing roller facing the drum. The developing roller accommodates a stationary magnet roller that forms on the surface of the developing roller a scoop-up pole for scooping up the ... | 05/19/2009 |
| 7486917 | Image-forming apparatus An image-forming apparatus includes a first developer container accommodating a first developing agent containing a dark-colored toner and a first carrier; a first developing agent-bearing member at the first developer container, that transports the first developing... | 02/03/2009 |
| 7440718 | Developing apparatus featuring image defect supression A developing apparatus having a developing sleeve provided with an elastic layer on its surface, and for developing an electrostatic image formed on an image bearing member with a mono-component magnetic toner having a mean degree of circularity of 0.965 or greater,... | 10/21/2008 |
| 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 |
| 7379693 | Developing apparatus A developing apparatus having a rotatable developing sleeve having an elastic layer on the surface thereof for carrying a mono-component magnetic developer and urged against a photosensitive drum to develop an electrostatic image formed on the drum with the develope... | 05/27/2008 |
| 7366454 | Long magnet, production method thereof, magnet roller and image forming device The long magnet includes a magnet block made of a mixture of rare earth magnetic powder, thermoplastic resin particles, fluidity additive, pigment, wax and charge control agent, and a reinforcing member to reinforce the magnet block. At least part of the reinforcing... | 04/29/2008 |
| 7352983 | Development magnet roller, development device, process cartridge and image forming apparatus A development magnet roller for use in a development roller of an electrophotographic image forming apparatus is provided. The development magnet roller has a development pole to form a magnetic field causing a developer born on a surface of the development roller i... | 04/01/2008 |
| 7328500 | Method of manufacturing laminated polar anisotropic hybrid magnet Disclosed is a method of manufacturing a laminated polar anisotropic hybrid magnet, which includes separately mixing first permanent magnet powders having low magnetic properties and second permanent magnet powders having high magnetic properties with a thermoplasti... | 02/12/2008 |
| 7327965 | Charging units capable of use in and image forming apparatus having different processing speeds Charging unit(s) is/are made versatile enough to be used in a plurality of image forming apparatus models having different processing speeds. Furthermore, in the context of an electrophotographic image forming apparatus permits selective switching between/among proc... | 02/05/2008 |
| 7315711 | Image forming apparatus, process cartridge and cleaningless system An image forming apparatus of includes a developing device bifunctioning as a cleaning device for collecting toner grains left on a photoconductive drum after the transfer of a toner image from the drum to a paper sheet or similar image transfer medium. In the event... | 01/01/2008 |
| 7308223 | Method, device and image forming apparatus for developing an image using a two-component developing agent A developing agent carrying member including magnets is disposed facing an image carrying member, a two-component developing agent containing toner and magnetic carrier is carried in a form of a layer on a surface of the developing agent carrying member, speed diffe... | 12/11/2007 |
| 7289753 | Image forming apparatus and charging unit therefor An image forming apparatus includes an image bearing member, and first and second chargers. Each of the chargers includes a magnetic member for generating magnetism, has a holding member for holding magnetic particles by a magnetic force, and charges the image beari... | 10/30/2007 |
| 7289754 | Image forming apparatus An image forming apparatus incorporating: an image forming body; and a developing unit having a developer carrier, a magnetic field generator, a developer restriction member, a first conveyer, and a second conveyer, wherein the magnetic field generator has: a main m... | 10/30/2007 |
| 7283774 | Developing method using a two-ingredient type developer and image forming apparatus using the same A developing method of the present invention is practicable with a developing unit of the type including a rotatable, nonmagnetic sleeve and a rigid metering member. A two ingredient type developer made up of magnetic carrier grains and toner grains is magnetically ... | 10/16/2007 |
| 7251441 | Developing apparatus including magnetic field generating means, for use with a developer which includes a magnetic toner component A developing apparatus includes a developer carrying member for carrying a developer including one component magnetic toner to develop an electrostatic image formed on an image bearing member. The developer carrying member includes an elastic member contactable to t... | 07/31/2007 |
| 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 |
| 7236727 | Image forming apparatus An image forming apparatus includes an image bearing member for bearing and conveying an electrostatic image; a first developer carrying member for carrying and conveying a developer toward a first developing position; and a second developer carrying member for carr... | 06/26/2007 |
| 7236728 | Developing device and image formation device A developing device for developing an electrostatic latent image, which is formed on an image-bearing body, with a developer which includes a toner and a carrier, the developing device comprises a developing roll, which includes a fixed magnet at an interior portion... | 06/26/2007 |
| 7215909 | Developing device, and process cartridge maintaining position of developing roller, and image forming apparatus using these Disclosed are a developing device, a developing cartridge, a process cartridge, and an image forming apparatus in which image deficiency is prevented by absorbing the tolerance of each component and making the position of the developing roller in the thrust directio... | 05/08/2007 |
| 7214461 | Toner for electrophotography, developer using the same, image-forming process cartridge using the same, image-forming apparatus using the same and image-forming process using the same The toner of the present invention is suitably used in SLIC development system where a liner velocity of a developer-bearing member is 150 to 500 cm/sec. The toner has resin particles containing at least a coloring agent, and a charge controlling agent fine articles... | 05/08/2007 |
| 7212755 | Image forming apparatus A drum idle rotation is executed by the timing before printing on the basis of the number of drum idle rotating times selected by the operator, or the number of drum idle rotating times is set in accordance with a print image kind or a drum count value and the drum ... | 05/01/2007 |
| 7203450 | Developing roller, developing apparatus, process cartridge, and image formation apparatus A developing roller includes a developing sleeve having a nonmagnetic material, and a magnet roll provided inside the developing sleeve and formed by dispersing a magnetic powder in a polymer compound. A portion of the magnet roll corresponding to a developing pole ... | 04/10/2007 |
| 7194231 | Magnetic roller for image developing means A magnetic roller for image developing of a printer and having a roller body made of rubber, plastic, or artificial resin mixed with magnetic materials and formed as unity, and a plurality of S magnetic poles and N magnetic poles, which are formed in the outer circl... | 03/20/2007 |
| 7171152 | Image-forming apparatus and image-forming method An image-forming apparatus with multiple toner image-forming units that form toner images by developing electrostatic latent images by means of a developer containing a nonmagnetic toner and a magnetic carrier. Each of the toner image-forming units has a photorecept... | 01/30/2007 |
