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| Number | Title | Issue Date |
| 7840155 | Developing device and image forming apparatus A developing device facing an image carrier and including a developer carrier, a developer flying control member, and a development-noise control member. The developing device develops an electrostatic image formed on the image carrier by causing the developer to fl... | 11/23/2010 |
| 7835659 | Image forming apparatus capable of reducing noise energy radiated outside the apparatus, method of designing frame, and computer readable medium In an image forming apparatus, a frame as an interior member is provided so as to oppose an exterior cover as an exterior member for controlling noise from an apparatus main body. An opening that is made up of a number of aperture regions is provided for allowing so... | 11/16/2010 |
| 7729633 | Printer dynamically monitoring printer environment contamination An printer, such as a state of the art a high performance, electro-photographic printer. The printer includes at least one smart material sensor enclosed in the printer enclosure that monitors for the presence of a contaminant (e.g., toner or developer) above a sele... | 06/01/2010 |
| 7486903 | Image forming apparatus with fan for cooling a displaying portion A copying machine (image forming apparatus) including an operation displaying portion, a fan and a middle discharging portion. The operation displaying portion includes a color liquid crystal which can be rotated with respect to a main body of the copying machine di... | 02/03/2009 |
| 7469111 | Printer or copier with a refrigerator for generation of cold In a printer or copier at least one printing unit is provided that generates at least one toner image on at least one page of a carrier material. The printer or copier also has at least one fixing unit that fixes the toner image on the carrier material with aid of a... | 12/23/2008 |
| 7444097 | Air-conditioned electrophotographic image forming apparatus An electrophotographic image forming apparatus of the present invention includes a frame, a photoconductive drum disposed in the frame, and an air conditioning device for removing moisture around the drum inside the frame. The drum has a wear-resistant, durable surf... | 10/28/2008 |
| 7418217 | Image forming apparatus including a heat shielding device An image forming apparatus includes an image forming device that forms a toner image on a recording medium, a heat fixing device provided adjacent to the image forming device to fix the toner image onto the recording medium by heat, and a heat shielding device that ... | 08/26/2008 |
| 7389065 | Image-forming apparatus with vibrating part An image-forming apparatus includes a transfer part that transfers a toner image to a sheet; a fixing part that heats a sheet to which a toner image is transferred by the transfer part to a temperature at which the toner on the sheet melts, and ejects the sheet; a v... | 06/17/2008 |
| 7356286 | Charger, image forming apparatus and process cartridge A charger is opposed to a charging subject member and charges the charging subject member by generating corona discharge. The charger includes: a discharge electrode; and a pair of facing electrodes that are disposed to face with each other being the discharge elect... | 04/08/2008 |
| 7321742 | Image forming apparatus, drum unit, image forming module, and method of insertion and removal of a damper into and from an image carrier drum An image forming apparatus includes a photoreceptor belt formed by either a belt or a thin-walled cylinder. A charging unit that sets bias characteristics of the photoreceptor belt has an arrangement to approach towards the photoreceptor belt. A damper is provided o... | 01/22/2008 |
| 7288353 | Toner, developer, image developer and image forming apparatus A toner including toner particles including a binder resin, a colorant, and an inorganic particulate material present on a surface of the toner particles. The toner particles have a surface roughness (Ra) of from 1 to 30 nm, a standard deviation of the surface rough... | 10/30/2007 |
| 7286784 | Image forming apparatus and process cartridge Between a cleaner frame and a reinforced frame of an image forming unit, a junction duct is formed to flow a airflow from a inlet port to a exhaust port of a main body of an apparatus, a space between a fixing unit and the image forming unit is blocked by the airflo... | 10/23/2007 |
| 7263327 | Image forming apparatus Problem The object is to provide an image-forming apparatus which is capable of releasing the heat generated in the apparatus without incorporating a fan. Means for Solving the Problem Three ribs 17 are provided to rise on the surface of ... | 08/28/2007 |
| 7228087 | Fixing unit with air blowing apparatus An image forming apparatus provided with a fixing unit, the fixing unit comprising: a fixing member having a heating member therein; a pressing member that presses against the fixing member, wherein an image supporting material carrying a toner image is grasped and ... | 06/05/2007 |
| 7215783 | Image forming apparatus and method of evaluating sound quality on image forming apparatus A discomfort index, S, is calculated with an equation, S=0.3135×(Loudness value)+3.4824×(Tonality value)−3.1460. This equation uses a loudness value and a tonality value, both psychoacoustic parameters obtained from a sound from the image forming apparatus at a ... | 05/08/2007 |
| 7200348 | Volatile organic compound detector A printer system using inks, toners or developers with solvents therein is provided with a detector for volatile organic compounds assists in reducing potential accidents in the printer. The detector may be able to identify at least a threshold level of volatile org... | 04/03/2007 |
| 7190918 | Image forming apparatus An image forming apparatus of the present invention includes an image forming section configured to develop a latent image to thereby produce a corresponding toner image. An endless image transfer body directly or indirectly supports the toner image and conveys it w... | 03/13/2007 |
| 7171139 | Sleeve on a drum and changing said sleeve In replacing a sleeve on a printing machine drum, the diameter of the drum is reduced by moving the drum parts toward one another to facilitate removing the sleeve, and/or mounting another sleeve onto the drum, and increasing the drum diameter by moving the drum par... | 01/30/2007 |
| 7158734 | Image forming apparatus A second opening and closing door has a main body of the second opening and closing door, a sound absorbing member and a sound absorbing member cover. The sound absorbing member covers almost the entire surface of the main body of the second opening and closing door... | 01/02/2007 |
| 7151603 | Overhead transparency clarity simulator A method and apparatus for evaluating the scattering properties of a transparency image comprises projecting radiation through the transparency image to form a transmitted beam of radiation; splitting the transmitted beam of radiation into at least two distinct beam... | 12/19/2006 |
| 7136605 | Image forming apparatus, method of evaluating noise, and methods of manufacturing and modifying image forming apparatus A method of manufacturing an image forming apparatus includes evaluating, based on a pair comparison method, sounds generated when forming an image, carrying out a multiple linear regression analysis using a difference between scores of the evaluation as a target va... | 11/14/2006 |
| 7116927 | Photosensitive drum of image forming apparatus and method of damping vibration in the drum A photosensitive drum of an image forming apparatus includes a drum main body having a hollow shape, and a vibration damping body spaced from an inner wall of the drum main body, having a hollow shape, formed with a plurality of slits, and expanding and closely cont... | 10/03/2006 |
| 7104337 | Electrostatic fire control and extinguishing device A fire's electrostatic field is used to directly control and extinguish a fire. A flame is, in and of itself, a virtual electrode. The inventive electro-static fire control and extinguishing device uses at least one common electrode and allows the fire's own electro... | 09/12/2006 |
| 7085510 | Safety apparatus to suppress the spread of fire from a fixing chamber of a fixing station in an electrophotographic print or copy device To suppress spread of fire from a fixing chamber of a fixing station in an electrophotographic print or copy device, in the event of a fire, in order to partition a fixing chamber for a recording medium in a fireproof manner, arranged at the openings of the fixing c... | 08/01/2006 |
| 7040826 | Imaging devices and related cleaning means Imaging apparatus in accordance with the present invention generally include a housing and a portal defined therethrough, whereby a vacuum filter cartridge can be placed in an operable position within the housing by way of the portal. The vacuum filter cartridge can... | 05/09/2006 |
| 7035567 | Apparatus and method for reducing contamination of an image transfer device An apparatus and method for reducing contamination of an image transfer surface in an image transfer device includes a shield member configured to restrict airflow against the image transfer surface. ... | 04/25/2006 |
| 6985675 | Image forming devices, methods of operating an image forming device and methods of monitoring an environment proximate to an image forming device Image forming devices, methods of operating an image forming device, and methods of monitoring an environment proximate to an image forming device are described. One aspect provides an image forming device including an image engine configured to form hard images; an... | 01/10/2006 |
| 6957026 | Dual airflow environmental module to provide balanced and thermodynamically adjusted airflows for a device An electrophotographic marking device includes a xerographic marking module and an environmental control module which controls temperature and relative humidity inside the marking module. The environmental module has a main plenum chamber and a divided or split plen... | 10/18/2005 |
| 6885836 | Image forming apparatus limiting heat transfer An image forming apparatus of the present invention includes an image forming section configured to develop a latent image to thereby produce a corresponding toner image. An endless image transfer body directly or indirectly supports the toner image and conveys it w... | 04/26/2005 |
| 6876828 | Image formation apparatus and tone quality improving method of image formation apparatus A discomfort index of sound is obtained by an equation using the loudness value, sharpness value, tonality value and impulsiveness value of psychoacoustic parameters obtained from sounds at a position away from the end face of an image formation apparatus by 1 m. Th... | 04/05/2005 |
| 6862417 | Image formation apparatus, sound quality evaluation method, method of manufacturing image formation apparatus, and method of remodeling image formation apparatus In an image formation apparatus, a discomfort probability P, calculated from an expression (a), fulfills a condition (b). Here, {circumflex over (P)}im=1/{1+exp [−z]} (a) {circumflex over (P)}im≦0.2725... | 03/01/2005 |
| 6757508 | Image carrier and damping member therefor A damping member is fitted in the hollow cylindrical core of a photoconductive drum. The damping member is implemented as a hollow cylinder having one end thereof closed by an end wall. A jig is inserted into the damping member and caused to insert the damping membe... | 06/29/2004 |
| 6697584 | Image formation apparatus and tone quality improving method of image formation apparatus A discomfort index of sound is obtained by an equation using the loudness value, sharpness value, tonality value and impulsiveness value of psychoacoustic parameters obtained from sounds at a position away from the end face of an image formation apparatus... | 02/24/2004 |
| 6671478 | Injection molded noise attenuator for a photoreceptor An improved zero draft cylindrical noise attenuator for electrostatographic printers made of structural foam and having a cylindrical sidewall thicker than 4 mm throughout at least most of its circumference and a gap along the length of its long dimension... | 12/30/2003 |
| 6564030 | Vented skive assembly for a fuser station in an image-forming machine This invention provides a fuser station with a vented skive assembly for an image-forming machine. The image-forming machine may have a photoconductor, a primary charger, an exposure machine, a toning station, a transfer charger, and a vented fuser statio... | 05/13/2003 |
| 6553197 | Noise-free silencer assembly A noise-free silencer assembly is provided that is suitable for reducing self-vibration noises and screeching noises between a cleaning blade and the imaging member of an electrostatographic reproduction machine. The noise-free silencer assembly comprises... | 04/22/2003 |
| 6470158 | Weighted noise reducing device for photosensitive drum of an image forming apparatus A device and method for reducing noise and/or vibration in an image forming apparatus. In a preferred form, an insert is disposed inside of a photosensitive drum, and the insert is an elastic member having, in a relaxed state, an outer diameter larger tha... | 10/22/2002 |
| 6466752 | Method of improving sound quality and image formation apparatus A method of improving the quality of sounds produced from a device provided with a mechanical drive mechanism and the like is provided. In this method, by using either one of or both of units for suppressing noise of a noise source produced in said device... | 10/15/2002 |
| 6438338 | Extended life recycleable silencer assembly A silencer assembly that has an extended life, is recycleable and suitable for reducing screeching noises between a cleaning blade and an imaging member of an electrostatographic reproduction machine. The silencer assembly includes (i) a first C-shaped me... | 08/20/2002 |
| 6406656 | Fabrication of photoconductor drum insert Inserts (1) to reduce noise from photoconductor drums during use are molded by thermal injection to have a bridge (5, 51, 5b) across the longitudinal gap (7, 7a, 6b) of the insert. In the preferred embodiment the bridge is centered with respect to the lon... | 06/18/2002 |
