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| Number | Title | Issue Date |
| 8180251 | Cover and cartridge An electrophotographic image forming apparatus detachably mountable to a main assembly of the apparatus, includes a rotatable image bearing member on which a latent image is to be formed; charging means for contacting said image bearing member to charge a surface of... | 05/15/2012 |
| 8095037 | Corona wire cartridge, corona discharger, and image forming apparatus using the corona discharger A corona wire cartridge includes: a reel around which a corona wire is wound; a reel holder that rotatably supports the reel; a casing having a receiving portion which receives the reel and the reel holder and a wire drawing opening through which the corona wire is ... | 01/10/2012 |
| 8041259 | Conductive member, process cartridge including same, and image forming apparatus including the process cartridge A conductive member includes a conductive supporting member provided facing an image bearing member and including a continuous or discontinuous fixing groove provided in the vicinity of each of both ends of the conductive supporting member in a peripheral direction ... | 10/18/2011 |
| 8036571 | Image forming apparatus An image forming apparatus includes a plurality of image forming units arranged in parallel, each image forming unit having an image carrying member and a charging roller disposed face to face with the image carrying member for electrically charging the image carryi... | 10/11/2011 |
| 8010015 | Charger and image forming apparatus using the charger A grid electrode is attached to a case and a serrated electrode holder by engaging an opening of the grid electrode with a pair of engaging claws formed in the case and engaging another opening of the grid electrode with an engaging claw of the serrated electrode ho... | 08/30/2011 |
| 7907869 | Charging brush unit, charging device, and image forming apparatus A charging brush unit includes a brush and a conductive holder. The brush includes a plurality of flexible conductive fibers. The plurality of flexible conductive fibers is supplied with a charging bias to generate electrical discharge between a top of the plurality... | 03/15/2011 |
| 7869741 | Charging member including a conductive support and surface layer having protrusions formed on a surface thereof, a process cartridge including same for use in an image forming apparatus A charging member is provided which can inhibit defective images due to poor charging and adhering substances from occurring even after being repeatedly used for a long time, and can inhibit deformation and defective images due to the C set, caused by a change in ro... | 01/11/2011 |
| 7817937 | Image forming apparatus and attaching method of charger unit in image forming apparatus to install/remove main chargers In this invention, the charging units are in the separate construction for the main chargers and for the ozone ducts. When installing the process units, the ozone ducts are placed on the elastic sheets of the duct cases that are fixed to the main frame. The process ... | 10/19/2010 |
| 7756442 | Locking feature for use in cartridge insertion guide applications A guide is used to protect a corona cartridge during shipping and during insertion into an electrostatic marking apparatus. The guide has dimensions that will permit the cartridge to fit therein and has a locking mechanism that securely holds the cartridge in place ... | 07/13/2010 |
| 7725052 | Ion generating device and image forming apparatus including same An ion generating device provided in an image forming apparatus of the present invention as a charging device for charging before a first transfer, a charging device for charging before a second transfer, or a charge device for charging an electrostatic latent image... | 05/25/2010 |
| 7720412 | Process cartridge A process cartridge in which before use, the separation of a predetermined distance between a charging roller and a photosensitive drum can be maintained, and in use, the separation state of the charging roller can be released without increasing the burden on a user... | 05/18/2010 |
| 7680434 | Developing cartridge, image forming apparatus having the same, and maintenance method of developing cartridge A developing cartridge includes a main frame including a photosensitive medium, and a charging member frame including a charging member to charge the photosensitive medium and detachably disposed at the main frame. The main frame includes a plurality of frame refere... | 03/16/2010 |
| 7577378 | Image carrier unit and image forming apparatus An image carrier unit that is removably loaded into a main body of an image forming apparatus includes: an image carrier on which an image is formed; a charge roll that charges the image carrier; a biasing member that causes the charge roll to be pressed against the... | 08/18/2009 |
| 7486911 | Elastic member, process for manufacturing thereof and mass production process thereof, process cartridge, and electrophotographic apparatus In an elastic member for electrophotography, having a conductive or semiconductive elastic layer, the elastic layer contains a vulcanized rubber obtained by vulcanizing a material rubber in the presence of a specific sulfur-atom-containing compound as a vulcanizatio... | 02/03/2009 |
| 7463845 | Charging device having a first and second pressure with a cleaning member, and process cartridge and image forming apparatus including the charging device A charging device including a charging member configured to charge an image bearing member while the charging member is contacted with or is located so as to be close to the image bearing member when the charging device is set in an image forming apparatus; and a cl... | 12/09/2008 |
| 7420169 | Dicorotron wire assembly removal-insertion tool Electrostatic printing processes utilize corona-charging units. When those units wear out or become faulty, they need to be replaced. This embodiment provides a tool that can be used to remove a faulty electrode wire assembly from the unit. This same tool when loade... | 09/02/2008 |
| 7356273 | Image forming apparatus with switched-potential responsive to attenuation of a remaining voltage An image forming apparatus changes over an electric potential on an image bearing member in response to an attenuation region in which a remaining potential on an image bearing member attenuates after a developing bias applied to the developing member has been turne... | 04/08/2008 |
| 7349158 | Diffraction grating-based encoded micro-particles for multiplexed experiments Microparticles 8 includes an optical substrate 10 having at least one diffraction grating 12 disposed therein. The grating 12 having a plurality of colocated pitches Λ which represent a unique identification digital code that is detected... | 03/25/2008 |
| 7295793 | Electrophotographic reproduction system with a multifaceted charging mechanism A charging mechanism for an electrophotographic reproduction system has a charger cartridge inserted into a charger sleeve. The charger cartridge has multiple facets, each with a corona charger. The charger cartridge is positioned in the charger sleeve to have the c... | 11/13/2007 |
| 7251439 | Shield for charging device in xerographic printing device having reduced rate of contamination A xerographic printing device, including a charging device having a shield. In some embodiments of the shield of the charging device in the xerographic printing device, a plurality of holes are provided in an evenly spaced linear fashion extending nearly a full leng... | 07/31/2007 |
| 7248821 | Charging device A charging device includes magnetic particles, a magnetic particle carrying member that magnetically carries the magnetic particles into contact with a member to be charged, and a magnetic particle adjusting unit for adjusting an amount per unit area of magnetic par... | 07/24/2007 |
| 7236719 | Charger frame, photosensitive member cartridge, and image forming apparatus A photosensitive member cartridge includes a charger that includes a wire that generates a corona discharge, and a first fixing portion that secures at least one end of the wire in a longitudinal direction of the wire, wherein the first fixing portion includes a fir... | 06/26/2007 |
| 7209676 | Electrophotographic image forming apparatus, cartridge and process cartridge An electrophotographic image forming apparatus to which a cartridge is detachably mountable for forming an image on a recording medium. The apparatus includes a main body electrical contact member having a main body electrical contact electrically connected to a car... | 04/24/2007 |
| 7200347 | Electrophotographic image forming apparatus, cartridge and process cartridge An electrophotographic image forming apparatus to which a cartridge is detachably mountable for forming an image on a recording medium, having a main body electrical contact member having a main body electrical contact electrically connected to a cartridge electrica... | 04/03/2007 |
| 7194224 | Image forming apparatus, image forming process, and process cartridge The present invention relates to an image forming apparatus, an image forming process and a process cartridge, in which the image quality and the durability of the photoconductor may be enhanced, images may be formed stably even after the repeated usages, and higher... | 03/20/2007 |
| 7190522 | Chemical synthesis using diffraction grating-based encoded optical elements An optical identification element having a synthesized chemical attached thereto includes an optical substrate having at least one diffraction grating disposed therein, the grating having a resultant refractive variation at a grating location, said grating being emb... | 03/13/2007 |
| 7179537 | Spin-on glass composition and method of forming silicon oxide layer in semiconductor manufacturing process using the same A spin-on glass (SOG) composition and a method of forming a silicon oxide layer utilizing the SOG composition are disclosed. The method includes coating on a semiconductor substrate having a surface discontinuity, an SOG composition containing perhydropolysilazane h... | 02/20/2007 |
| 7144525 | Elastic member of semiconductive polymer and OA equipment using the same An elastic member of a semiconductive polymer comprising a conductive composition containing a conductive polymer and binder polymer, wherein the elastic member satisfies both characteristics of (A) a variation of 1.5 digit or less between the electrical resistance ... | 12/05/2006 |
| 7139511 | Image forming apparatus, method of calculating amount of toner transfer, methods of converting regular reflection output and diffuse reflection output, method of converting amount of toner transfer, apparatus for detecting amount of toner transfer, gradation pattern, and methods of controlling toner density and image density An amount of toner transfer on a reference pattern is calculated by using an optical detecting unit that detects both regular reflection light and diffuse reflection light from a detection target simultaneously, based on a relative ratio between a value obtained by ... | 11/21/2006 |
| 7126755 | Method and apparatus for labeling using diffraction grating-based encoded optical identification elements A method and apparatus for labeling an item using diffraction grating-based encoded optical identification elements 8 includes an optical substrate 10 having at least one diffraction grating 12 disposed therein. The grating 12 has one or ... | 10/24/2006 |
| 7123860 | Small footprint charge device for tandem color marking engines In a xerographic printing apparatus, a small footprint charging device may provide uniformity of charge and/or long life in a small diameter photoconductive drum. A grid to be parallel to the drum surface and including small wing shields may reduce or even prevent l... | 10/17/2006 |
| 7113856 | Method for the classification of an occupancy status of a vehicle seat A method for classifying an occupancy status of a vehicle seat includes associating a filtered class to a specific seat occupancy status based on a plurality of successive readings of at least one parameter value of a seat occupancy sensor, including the steps of: 1... | 09/26/2006 |
| 7106513 | Diffraction grating-based encoded particle An encoded particle 8 includes a particle substrate 10; at least a portion of the substrate having at least one diffraction grating disposed therein, the grating having a resultant refractive index variation at a grating location, the grating being emb... | 09/12/2006 |
| 7092160 | Method of manufacturing of diffraction grating-based optical identification element A method for manufacturing a diffusion grating-based optical identification element is provided. The optical identification element includes a known fiber substrate, having a diffraction grating disposed therein the grating being indicative of a code when exposed to... | 08/15/2006 |
| 7092649 | Charging device and image forming apparatus provided therewith An image forming apparatus has a charging member opposed to an outer circumferential surface of a rotating object to be charged. The image forming apparatus has a voltage applying section for applying a pulsating voltage Vsp between the charging member and the objec... | 08/15/2006 |
| 7088939 | Process cartridge and electrophotographic image forming apparatus A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the process cartridge includes an electrophotographic photosensitive drum, a charging member for electrically charging the electrophotographic photosensiti... | 08/08/2006 |
| 7079786 | Image forming apparatus In an image forming apparatus according to the present invention, the force of a tension spring returning to its original position is utilized to vibrate or impact a conductive member using a predetermined timing, one end of the conductive member being fixed and the... | 07/18/2006 |
| 7068955 | Image forming apparatus having developer amount detector An image forming apparatus or a cartridge detachably attachable to the image forming apparatus is provided, wherein the apparatus comprises developer container for containing developer, developer amount detecting means for detecting an amount of the developer contai... | 06/27/2006 |
| 7058320 | Image forming apparatus, cartridge detachably mountable to the image forming apparatus, developer remainder displaying method and system An image forming apparatus includes a developer container for containing a developer; a developer amount detector for detecting the amount of the developer contained in the developer container; a memory; and a calculator for calculating a display level of the remain... | 06/06/2006 |
| 6961529 | Charging device using a charge roller and image forming apparatus including the same An image forming apparatus of the present invention includes a charging device including a charge roller formed with annular grooves at opposite end portions thereof and configured to charge an image carrier. Annular gap forming members each are fitted in the annula... | 11/01/2005 |
