Patent application number | Description | Published |
20080310897 | CLEANING DEVICE, IMAGE FORMING APPARATUS INCLUDING THE DEVICE, AND PROCESS CARTRIDGE INCLUDING THE DEVICE - A cleaning device includes a cleaning member, a collection member, an electrical field generator, and a separation member. The cleaning member has a surface capable of moving while contacting a surface of a cleaning target to remove toner on the surface of the cleaning target. The collection member has a surface capable of moving while contacting the surface of the cleaning member to collect the toner on the surface of the cleaning member. The electrical field generator generates an electrical field to move the toner from the cleaning member to the collection member. The separation member contacts the surface of the collection member to separate the toner on the surface of the collection member. The collection member has a centerline average surface roughness of not more than 0.1 μm and shows a surface hardness rank of B or higher in a steel-wool scratch test. | 12-18-2008 |
20090092428 | 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 member upstream from the cleaning member, a blade supporting member, a blade power source, and a conductive member that is more conductive than the elastic blade, and electrically connects the blade supporting member and the elastic blade. The conductive member is disposed so that an edge part of the conductive member is closer to where the elastic blade contacts the target member than an edge part of the blade supporting member. | 04-09-2009 |
20090116872 | Charging device, and process cartridge and image forming apparatus using the same - A charging device including an electron discharging device for forming a latent electrostatic image on an image bearing member and containing an sp | 05-07-2009 |
20090311004 | CLEANING DEVICE AND IMAGE FORMING APPARATUS - A cleaning device | 12-17-2009 |
20100003052 | CLEANING DEVICE, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE - A cleaning device including a conductive member configured to charge powder remaining on a member to be cleaned so as to have a single polarity and configured to scrape off at least part of the powder, and disposed to contact with the member to be cleaned; a cleaning member configured to electrically adsorb the powder present on the member to be cleaned, disposed to contact with the member to be cleaned and located downstream of the conductive member in a direction in which the powder is conveyed thereon; a first recovering member configured to electrically adsorb the powder present on the cleaning member and disposed to contact with the cleaning member; and a second recovering member configured to scrape off the powder from the first recovering member and disposed to contact with the first recovering member, wherein the conductive member is constant-current controlled. | 01-07-2010 |
20100008706 | CLEANING DEVICE AND IMAGE FORMING APPARATUS - A cleaning device used for removing toner particles remaining on an image bearing member, including a plurality of brush rollers capable of coming into contact with the image bearing member, the brush rollers being disposed around the image bearing member in a row in a direction in which the image bearing member is moved, wherein one of the brush rollers includes brush fibers each containing a conductive agent dispersed homogeneously therein or only in its surface layer, wherein another brush roller includes oblique brush fibers, looped brush fibers, or both of them, each brush fiber containing the conductive agent localized in a center portion thereof without being dispersed in its surface layer, and wherein the oblique brush fibers are obliquely provided in the another brush roller so that tip portions thereof are curled on the image bearing member in a direction in which the image bearing member is moved. | 01-14-2010 |
20100034549 | 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 material, wherein the contact edge is covered with a resin layer including an electroconductive material. A cleaner including the polarity controlling device; a brush contacting the image bearing member to electrostatically collect the charged residual material utilizing potential difference; a collection member contacting the brush to collect the residual material; and a cleaning blade contacting the collection member to scrape the residual material therefrom. An image forming apparatus including an electrostatic image bearing member; a developing device developing the electrostatic image using a developer including a toner to form a toner image; a transfer device transferring the toner image onto a receiving material; and the cleaner. | 02-11-2010 |
20100073697 | ELECTRIC CHARGING APPARATUS AND IMAGE FORMING APPARATUS USING THE SAME - An electric charging apparatus and an image forming apparatus using the electric charging apparatus, capable of stably discharging electrons and reducing deterioration in an electron discharging member, which includes an electric field forming device including two electrodes facing each other to form electric field therebetween including an electron discharging member provided at a portion of one of the electrodes, where the portion faces the other electrode, to discharge electrons into the electric field, and a voltage applying controller to control voltage applied to the electrodes, wherein the voltage applying controller selects two or more intensities of the electric field. | 03-25-2010 |
20100239302 | Cleaning unit, process cartridge, and electrophotographic image forming apparatus - A cleaning unit that can remove particles of residual toner remaining on an image carrier after transfer and be incorporated in a process cartridge removably installable to an image forming apparatus, includes a brush roller disposed in contact with the image carrier to remove the residual toner remaining on the image carrier from the image carrier, and a polarity control member disposed in contact with the image carrier to control charge polarities of the residual toner remaining on the image carrier before the residual toner is removed by the brush roller. The polarity control member includes a first surface where the polarity control member contacts the image carrier, a second surface where the polarity control member does not contact the image carrier, and a conductive filler that is not exposed on the first surface that contacts the image carrier. | 09-23-2010 |
20110085834 | Cleaning device and image forming apparatus incorporating same - A cleaning device for an electrophotographic image forming apparatus includes a primary cleaning brush, a collecting roller, and a blade. The primary cleaning brush is configured to remove post-transfer residual toner remaining on an image carrying member. The collecting roller is configured to cause the post-transfer residual toner adhering to the first cleaning brush to electrostatically adhere thereto, is made of metal, and has a surface roughness Ra of at least approximately 0.08 micrometers. The blade is configured to come into contact with the collecting roller and mechanically remove the post-transfer residual toner adhering to the collecting roller. | 04-14-2011 |
20110103822 | BELT DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME - A belt device incorporatable in an image forming apparatus includes an endless belt, multiple belt tension rollers disposed in contact with an inner surface of the endless belt, a rotary cleaning member to contact a belt wound area of the endless belt facing an opposing roller to form a cleaning nip between the rotary cleaning member and the endless belt and rotate the rotary cleaning member in a direction opposite the belt moving direction within the cleaning nip, and a voltage applier. The cleaning nip is formed by offsetting a center of the cleaning nip upstream from a center of the belt wound area of the endless belt in the belt moving direction and by at least contacting the rotary cleaning member in a range from the belt wound area to a tensioned belt area located upstream from the belt wound area in the belt moving direction. | 05-05-2011 |