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| Number | Title | Issue Date |
| 8190077 | Cleaning device and image forming apparatus A cleaning device 20 for removing a toner remaining on an image bearing member 5A after transfer, including: a polarity control member 23 configured to unify polarities of the remaining toner on the image bearing member 5A, a cleaning mem... | 05/29/2012 |
| 8045911 | Image forming apparatus having a cleaning section An image forming apparatus, including an image carrier, a toner image forming section which forms a toner image on the image carrier, a transfer section which transfers the toner image formed on the image carrier to an intermediate transfer member or a recording she... | 10/25/2011 |
| 8019268 | Polarity controlling device, and cleaner and image forming apparatus using the polarity controlling device A polarity controlling device for controlling polarity of residual material on an image bearing member, including a blade, to which a first voltage is applied and which has a contact edge contacted with the surface of the image bearing member to charge the residual ... | 09/13/2011 |
| 7991343 | Photoconductor drum cleaning apparatus in an electrophotographic printer A photoconductor drum cleaning apparatus in an electrophotographic printer is disclosed which is simple in makeup, which allows a wiping roll to be rotated to follow rotation of the photoconductor drum is rotated and to be serviced for a prolonged life and is capabl... | 08/02/2011 |
| 7817954 | Cleaning unit, image carrier unit including same, and image forming apparatus including same A cleaning unit, providable to an image carrier unit or an image forming apparatus, includes a cleaning member disposed in contact with a target member to electrically remove residual toner from the target member, an elastic blade disposed in contact with the target... | 10/19/2010 |
| 7773933 | Cleaning device and method for an electrophotographic photoconductor The present invention provides an image forming apparatus and an image forming method capable of preventing excessive charging in the toner within the cleaning device for effectively preventing generation of the black spots derived from the leak current. In the imag... | 08/10/2010 |
| 7756461 | Image forming apparatus with polishing roller that changes rotational direction during a polishing mode An image forming apparatus has a photosensitive drum (2), a transfer roller (5) above photosensitive drum (2), a transport line (14) that passes between photosensitive drum (2) and the transfer roller (5), a cleaning unit ( | 07/13/2010 |
| 7729654 | Cleaning apparatus and image forming apparatus A cleaning device includes a cleaning blade for contacting to a rotatable image bearing member and removing toner from the image bearing member; an auxiliary cleaning member, disposed upstream of the cleaning blade with respect to a rotational direction of the image... | 06/01/2010 |
| 7664453 | Cleaning device and image forming apparatus A cleaning device includes: a housing; a cleaning roller provided in the housing and operable to come into contact with a photosensitive drum; a cleaning blade operable to come into contact with a surface of the photosensitive drum at a position lower than a nip pos... | 02/16/2010 |
| 7505729 | Cleaning apparatus and electrophotographic image forming apparatus provided therewith A cleaning apparatus 30 is provided with a cleaning roller 33 that is a rotating member, a scraper 35, a partition wall 36, opening/closing members 37, and a discharge screw 38 that is a discharging member. The scraper 35... | 03/17/2009 |
| 7471924 | Cleaning unit and image forming apparatus This invention relates to a cleaning unit including a cleaning blade that keeps a front end of rubber material in contact with the surface with a pressure so as to scrape residual toner left on the surface of the photoreceptor and a fiber body having multiple fibers... | 12/30/2008 |
| 7457578 | Blade brush cleaner There is disclosed a system for cleaning marking material from a surface portion of a movable photoconductive member. The system includes a first rotatable brush, a blade and a second rotatable brush arranged in sequential order along the movable photoconductive mem... | 11/25/2008 |
| 7433644 | Blade brush cleaner A photoconductor belt cleaning system is described. This system can utilize in one embodiment one cleaning brush and a cleaning blade, and in a second embodiment, two cleaning brushes, brush 1 and brush 2, with a cleaning blade. In the second embodimen... | 10/07/2008 |
| 7421240 | Asymmetric AC cleaner for improved toner charge distribution in scavenging development systems This is a cleaning system useful in an electrophotographic marking system which takes up a small space in space important marking apparatus. It involves applying an asymmetric AC wave-form to a cleaning brush. Wrong sign or unwanted toner will be attracted to this c... | 09/02/2008 |
| 7406289 | Image forming apparatus using a cleaning device and cleaning method thereof Disclosed is a cleaning device, a cleaning method and an image forming apparatus applied with the cleaning device and the cleaning method. The cleaning device includes a first cleaning member for removing waste developers remaining on one of a transfer belt and a ph... | 07/29/2008 |
| 7379686 | Image forming apparatus featuring first and second developer agent removing members An image forming apparatus including an image bearing member which bears developing-agent images; a first removing member which removes a developing agent from the image bearing member, wherein the first removing member is contacted with the image bearing member whi... | 05/27/2008 |
| 7346307 | Amorphous and spherical toner cleaning unit and image forming apparatus loading the same In an image forming apparatus that uses toners of a plurality of different colors, amorphous toner is used during image forming with a first color. Then, a controller, by using a toner remaining-removing switching device, causes toner scraped off from an image carri... | 03/18/2008 |
| 7346308 | Cleaning device, method for preparing the cleaning device, and image forming apparatus and process cartridge using the cleaning device A cleaning device including a cleaning brush configured to clean a surface of a moving member while contacting and facing the surface; and a cleaning blade which is located on a downstream side from the cleaning brush relative to a moving direction of the moving mem... | 03/18/2008 |
| 7319841 | Apparatus and method for cleaning residual toner with a scraper blade periodically held in contact with a toner transfer surface A cleaning station for removing residual toner from a moving toner transfer surface includes a rotating brush and a scraper blade that is held away from the toner transfer surface when toner images are being transferred to recording media, such as sheets of paper. O... | 01/15/2008 |
| 7313356 | Image forming apparatus A cleaning apparatus is used for cleaning the surface of a photoconductive body. Residual toner on a rotating photoconductive body is collected after transferring a toner image from the photoconductive body onto a print medium, the apparatus includes a first cleanin... | 12/25/2007 |
| 7313343 | Image forming apparatus An electrostatic latent image is formed on a rotary image carrier. A developer is provided with at least one developing roller which is separatably abutted on the image carrier at a developing position to supply toner onto the image carrier to make the latent image ... | 12/25/2007 |
| 7295796 | Image forming apparatus having a temporary toner holding device and a toner collecting device A cleaningless image forming apparatus of the present invention uses spherical toner grains on surfaces of which a charge control agent and/or organic fine grains are present, thereby enhancing efficient image transfer. A brush roller collects, among toner grains le... | 11/13/2007 |
| 7284479 | Printer operable in duplex print mode A stencil printer operable in a duplex print mode of the present invention prints an image on one side of a sheet and then prints another image on the other side of the same sheet. The printer includes at least one print drum and at least one press roller facing the... | 10/23/2007 |
| 7280785 | Image forming apparatus An image forming apparatus provided with a photosensitive member, a charging device for charging the photosensitive member, a developing device for developing an electrostatic image formed on the photosensitive member by a developer, a cleaning blade for removing th... | 10/09/2007 |
| 7272344 | Image forming method capable of maintaining sustained stable cleaning performance without causing an image smearing phenomenon even with a high strength and high abrasion image bearing member The invention is to provide an image forming method of a long service life, a high image quality and a low running cost, capable of maintaining a stable cleaning performance over a prolonged period without causing an image deletion phenomenon, even with a image bear... | 09/18/2007 |
| 7272354 | Cleaning unit and image forming apparatus having multiple cleaning blades A cleaning unit includes a first blade and a second blade. The first blade is in contact with an image carrier or a paper carrier and removes adhered substances remained on surface of these. The second blade has an abrasive layer that is formed by including abrasive... | 09/18/2007 |
| 7272355 | Cleaning device for image forming apparatus A cleaning device is disposed substantially vertical above a photosensitive drum for the purpose of constructing a compact electrophotographic printer. The cleaning device includes a housing that accommodates an auxiliary toner conveying part and a sheet-like resili... | 09/18/2007 |
| 7257362 | Photoreceptor abrader for LCM A cleaning system for cleaning an imaging surface moving in a process direction, including: an abrading brush for uniformly abrading the imaging surface to remove laterally conductive deposits that lead to lateral charge migration therefrom, the abrading brush inclu... | 08/14/2007 |
| 7251430 | Image forming apparatus An image forming apparatus has: an image bearing member that bears a toner image and moves; a transfer means that transfers the toner image on the image bearing member to a transfer medium; a first eliminating member that comes in contact with the image bearing memb... | 07/31/2007 |
| 7251434 | Color image forming apparatus A color image forming apparatus includes image forming units, an intermediate transfer body, and cleaning units. The image forming units form toner images of different colors. Each image forming units includes a developing unit supplying toner of each color. The ton... | 07/31/2007 |
| 7251448 | Cleaning blade control apparatus and method An apparatus includes a xerographic cleaning blade, an actuator member operatively connected to the cleaning blade and movable over a first stroke from a first actuator position to a second actuator position, and a damper operatively connected to the actuator member... | 07/31/2007 |
| 7236724 | Method for forming image and image forming apparatus The developing agent is selected to have a distribution of adhesive force to the surface of an image carrier, which is configured such that the ratio of the developing agent having an adhesive force which is not less than 2.5 times as high as an average value of a d... | 06/26/2007 |
| 7224929 | AC biased conductive brush for eliminating VOC induced LCM A cleaning system including: a cleaning device for cleaning laterally conductive deposits from the imaging surface; an AC bias member, adjacent to the imaging surface and positioned downstream from the cleaning device; and a power supply for biasing the AC bias memb... | 05/29/2007 |
| 7218888 | Image formation apparatus An image formation apparatus includes a cleaning device capable of coming into and out of contact with the front surface of a toner image carrier which rotates with toner images adhering on its front surface, and for removing toners adherent on the front surface of ... | 05/15/2007 |
| 7215920 | Imaging forming apparatus An image forming apparatus which can quickly remove remaining toner even after it has been emergently stopped when it forms an image by the use of an intermediate transfer member. An image forming apparatus for primary-transferring a toner image formed on a photosen... | 05/08/2007 |
| 7212320 | Image reading device An image reading device of the present invention includes a glass platen mounted on a support member. A rotary cam, a home position sensor and so forth allow the support member to move in reciprocation in a subscanning direction. When a document is conveyed along th... | 05/01/2007 |
| 7203452 | Tandem image forming device having a side-by-side arrangement of image forming sections A tandem image forming device for an image forming apparatus of the present invention includes a plurality of image forming means arranged side by side along an intermediate image transfer belt. The image forming means each include a developing device and a cleaning... | 04/10/2007 |
| 7190919 | Intermediate transfer device and image forming device An intermediate transfer device has: an intermediate transfer belt supported by a plurality of belt supporting mechanisms so as to be able to circulate, and having elasticity at least in a direction of circulating; a first bias applying mechanism applying a first bi... | 03/13/2007 |
| 7177581 | Image forming apparatus An image forming apparatus provided with a photosensitive member, a charging device for charging the photosensitive member, a developing device for developing an electrostatic image formed on the photosensitive member by a developer, a cleaning blade for removing th... | 02/13/2007 |
| 7177576 | Apparatus for forming image using liquid development Widths of a coating area, a developing agent carrier, a maximum image area and a first cleaning member taken along a second direction are respectively W1, W2, W3 and W4, the following conditions are satisfied: a first condition tha... | 02/13/2007 |
