Cleaning Unit Patents (Class 399/123)
  • Patent number: 8204400
    Abstract: A charging device includes a charging roller, a drive transmission device, and a charging roller cleaner. The charging roller opposes an image carrier driven to rotate and rotates to charge the image carrier. The charging roller cleaner contacts the charging roller to clean the charging roller. The drive transmission device transmits torque from the image carrier to the charging roller, and includes an image carrier gear and a driven gear. The image carrier gear and the driven gear form a gear train to drive the charging roller in response to rotation of the image carrier. The charging roller cleaner is disposed facing a rear surface of the charging roller to prevent displacement of the charging roller due to a force generated by a pressure angle formed between the image carrier gear and the driven gear when the charging roller rotates in response to rotation of the image carrier.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: June 19, 2012
    Assignee: Ricoh Company Limited
    Inventors: Shinya Karasawa, Takatsugu Fujishiro, Takaaki Tawada, Hiromichi Ninomiya, Takeshi Tabuchi, Naohiro Kumagai, Akira Fujimori
  • Patent number: 8185011
    Abstract: A first roll brush is formed from material having the positive triboelectric charge polarity against toner. A positive bias is applied to the first roll brush through a first collection roller by a first bias application device. A second roll brush is formed from material having the negative triboelectric charge polarity against toner. A negative bias is applied to the second roll brush through a second collection roller by a second bias application device. Thus, the first and second roll brushes are applied by each of biases having polarity identical to the triboelectric charge polarity of material of the roll brush against toner. This enhances cleaning performance of both the roll brushes and prevents degradation of the cleaning performance.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: May 22, 2012
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Satoru Shibuya, Hidetoshi Noguchi, Hisashi Murata, Kazuyoshi Hara
  • Patent number: 8175490
    Abstract: An image forming apparatus includes: an image forming unit having a plurality of photoconductor drums arranged in tandem; an intermediate transfer belt arranged opposite to the photoconductor drums and configured to receive developer images formed on the photoconductor drums and to transfer the developer images onto a recording sheet; a cleaning unit comprising a cleaning member positioned in contact with the intermediate transfer belt and configured to collect substance adhering to the intermediate transfer belt, and a receptacle configured to store the substance collected by the cleaning member, wherein the cleaning unit is arranged on the same side as the image forming unit with respect to the intermediate transfer belt; and a support member configured to support the image forming unit and the cleaning unit and to be pulled out from a main body.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: May 8, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Shougo Sato, Susumu Sakuma
  • Patent number: 8165501
    Abstract: There is provided an image forming apparatus including a main body, a drawer, an image forming unit, a belt unit and a cleaning unit. The drawer is movably supported to the main body and configured to be pulled out from an interior of the main body. The image forming unit is supported on the drawer and has photosensitive drums arrayed in line in a direction for forming an image on a recording medium. The belt unit is disposed in opposition to each of the photosensitive drums and extends in the direction. The cleaning unit is fixed to the drawer and is disposed at a side the same as the image forming unit with respect to the belt unit, such that the cleaning unit is pulled out integrally with the image forming unit from the main body.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: April 24, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Aya Tamura, Shougo Sato, Susumu Sakuma
  • Patent number: 8145089
    Abstract: A technique of easily detaching a cleaner with a simple configuration is provided. At the time of drawing out a drawing unit, an elastic supporting section is allowed to move against the pressing force of the elastic supporting section to a position where the elastic supporting of the cleaner is released by a support releasing section.
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: March 27, 2012
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventor: Susumu Koizumi
  • Publication number: 20120070186
    Abstract: An electrophotographic image forming apparatus for forming an image on a recording medium includes a cartridge configured to store developer, a transfer member located opposite an electrophotographic photosensitive member and configured to transfer a developed image formed on the electrophotographic photosensitive member to the recording medium, a supporting member that is movable, while supporting the cartridge, between an image forming position where image formation is conducted inside an apparatus body of the electrophotographic image forming apparatus and an attachment/detachment position which is spaced away from the image forming position and where attachment/detachment of the cartridge is feasible, and a waste developer container supported so as to be attachable/detachable with respect to the supporting member, having a cleaning member configured to remove the developer from a surface of the transfer member, and configured to store the developer removed by the cleaning member.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 22, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Ken Kikuchi, Tsutomu Nishiuwatoko, Takashi Akutsu
  • Patent number: 8139981
    Abstract: A cleaning station for removing particulate material from a moving web in an electrographic printer/copier includes a customer-replaceable web-cleaner device with a support bracket/backup shoe assembly. A quick disconnect feature enables the cleaner cover to be de-coupled from the cleaner body to allow the debris to be easily removed with replacing the web-cleaner. The cleaner has a cleaner sump that is spring loaded to force contact of four strategically placed stops in the sump with a stationary back up shoe assembly allowing for higher precision of blade engagement with a transport web or a photoconductor. The web-cleaner has two wiper blades, each having each having a distinguishment such that the distinguishment distinguishes one wiper blade from the other wiper blade when the blades are locked into the cleaner sump by springs, to facilitate material removed from the web. The wiper cleaning blades and the cover assembly are easily replaceable by the operator in the correct order.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: March 20, 2012
    Assignee: Eastman Kodak Company
    Inventors: Francisco L. Ziegelmuller, Thomas C. Bidwell, Edward T. Miskinis, Daniel R. Palmer, Jeffrey A. Pitas, Christoper S. Garcia
  • Patent number: 8139993
    Abstract: Web cleaning systems, apparatuses useful in printing onto webs, and methods of cleaning webs are provided. An exemplary embodiment of the web cleaning systems includes a first web cleaning device having a rotatable first electrostatic cleaning brush for contacting a first surface of a moving web on which toner is disposed to remove un-fixed toner from the first surface; and a first brush cleaning device having a first cleaning member contacting the first electrostatic cleaning brush for removing toner from the first electrostatic cleaning brush.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: March 20, 2012
    Assignee: Xerox Corporation
    Inventor: Bruce Earl Thayer
  • Patent number: 8116656
    Abstract: A transfer unit has a belt unit having a belt and a cleaning unit for cleaning the belt. The belt unit and the cleaning unit are integratedly provided. The cleaning unit is movable for the belt unit. The transfer unit is detachable for an apparatus main body. A position of the cleaning unit for the belt unit before the transfer unit is attached to the apparatus main body is different from a position of the cleaning unit for the belt unit after the transfer unit is attached to the apparatus main body.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: February 14, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Emi Furuya
  • Publication number: 20120027458
    Abstract: A cleaning device includes a cleaning blade for removing toner remaining on a surface of an image bearing member for carrying a toner image; a supporting member for supporting the cleaning blade; a mounting hole provided in one of the cleaning blade and the supporting member; a projection which is provided on the other of the cleaning blade and the supporting member and which is inserted in the mounting hole; and a recess provided in the projection and extended from a free end portion of the projection toward a base portion of the projection, wherein the cleaning blade and the supporting member are secured to each other by the projection deformed such that the recess expands outwardly of the mounting hole by resin material in the recess.
    Type: Application
    Filed: October 11, 2011
    Publication date: February 2, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hiroomi Matsuzaki, Akira Suzuki
  • Patent number: 8107849
    Abstract: A compact image forming apparatus is provided in which stains on the back of a transfer material can be prevented. In particular, in a marginless print mode in which a toner image can be formed to the edge of a transfer material, a large amount of toner adheres to a transfer-material bearing member. The image forming apparatus includes a collecting member that can temporarily collect the toner adhering to the transfer-material bearing member. The toner that is temporarily collected by the collecting member is transferred to an intermediate transfer member and is cleaned by a cleaning unit.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: January 31, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hisayuki Tomura, Kiyoharu Yoshioka, Michio Uchida, Tomonori Shida, Keisuke Mitsuhashi, Takao Nada, Takuma Abe, Hidetoshi Yamashita, Youhei Suzuki
  • Patent number: 8086133
    Abstract: A cleaning station for removing particulate material from a moving web in an electrographic printer/copier includes a customer-replaceable web-cleaner device with a support bracket/backup shoe assembly. The web-cleaner has two wiper blades, including one or more blades, each having a distinguishment such that the distinguishment distinguishes one wiper blade from the other wiper blade when the blades are locked into the cleaner sump by springs, to facilitate material removed from the web. The wiper cleaning blades are held using a shoe that comprises a “T-shaped” extrusion wherein the extrusion has a rigidity to reduce shoe deformations.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: December 27, 2011
    Assignee: Eastman Kodak Company
    Inventors: Francisco L. Ziegelmuller, Thomas C. Bidwell, Daniel R. Palmer, Bonnie J. Patterson, James N. Alkins
  • Patent number: 8068761
    Abstract: An image forming apparatus includes: an image forming unit including a plurality of photoconductor drums arranged in tandem; a conveyor belt arranged opposite to the photoconductor drums and configured to convey a recording sheet; and a cleaning unit including a cleaning member positioned in contact with the conveyor belt and configured to collect substance adhering to the conveyor belt, and a receptacle configured to store the substance collected by the cleaning member. The cleaning member is arranged on the same side as the image forming unit with respect to the conveyor belt and upstream from the image forming unit as viewed in a sheet conveyance direction along which the recording sheet is conveyed on the conveyor belt, and the image forming unit and the cleaning unit are pulled out together from a main body of the image forming apparatus toward an upstream side of the sheet conveyance direction.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: November 29, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Susumu Sakuma
  • Patent number: 8045880
    Abstract: A sheet feeding device to feed a sheet in a sheet feeding path is provided. The sheet feeding device includes a plurality of feeding rollers to feed a sheet in the sheet feeding path, and a dust remover unit to remove dust adhered onto a surface of the sheet. The dust remover unit includes a dust absorber roller to absorb dust from a surface of the sheet, a dust remover member arranged to be in contact with a surface of the dust absorber roller to remove the dust from the surface of the dust absorber roller, a conveyer member, arranged to be opposed to the dust remover member, to convey the dust removed by the dust remover member, and a cutter member, arranged in an intervening position between the dust remover roller and the conveyer member, to cut the dust removed by the dust remover member into smaller pieces.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: October 25, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Atsuo Hirose
  • Patent number: 8045870
    Abstract: An image forming apparatus includes: an image carrier; a charging unit which charges a surface of the image carrier; a brush which removes toner remaining on the image carrier by rubbing the surface of the image carrier; a cleaning blade provided downstream of the brush in a rotational direction of the image carrier, which removes the toner remaining on the image carrier; a surface potential measuring sensor which measures a surface potential of the image carrier between the brush and the cleaning blade; and a controller which causes the surface potential measuring sensor to conduct a measuring operation and adjusts the surface potential of the image carrier between the brush and the cleaning blade on the basis of a measurement result.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: October 25, 2011
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Satoshi Nishida, Hiroshi Morimoto, Kazuteru Ishizuka
  • Publication number: 20110255902
    Abstract: An image forming apparatus includes: an image forming unit having a plurality of photoconductor drums arranged in tandem; an intermediate transfer belt arranged opposite to the photoconductor drums and configured to receive developer images formed on the photoconductor drums and to transfer the developer images onto a recording sheet; a cleaning unit comprising a cleaning member positioned in contact with the intermediate transfer belt and configured to collect substance adhering to the intermediate transfer belt, and a receptacle configured to store the substance collected by the cleaning member, wherein the cleaning unit is arranged on the same side as the image forming unit with respect to the intermediate transfer belt; and a support member configured to support the image forming unit and the cleaning unit and to be pulled out from a main body.
    Type: Application
    Filed: June 29, 2011
    Publication date: October 20, 2011
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shougo SATO, Susumu SAKUMA
  • Patent number: 8025392
    Abstract: A recording apparatus with a conveying mechanism and a blocking member are described. The blocking member reduces foreign substances from soiling a unit or member located adjacent to or below the conveying mechanism. The conveying mechanism may be moved to a position permitting access to remove paper jams while the blocking member is located to permit the conveying mechanism to move to the position while continuing to reduce foreign substances from soiling the unit or member.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: September 27, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Shinya Yamamoto
  • Patent number: 8014701
    Abstract: A contacting and separating mechanism which causes a first member to contact a second member and separates the first member contacting the second member from the second member is disclosed. The contacting and separating mechanism includes a pressure applying member which is rotated together with the first member by using a force of a first force applying member with a first supporting point as the center and causes the first member to contact the second member and separates the first member contacting the second member from the second member, and separates the first member contacting the second member from the second member by rotating with the first member with a second supporting point as the center by changing the position of the first supporting point.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: September 6, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Makoto Nakura, Junji Shirakawa, Hiroshi Suzuki
  • Patent number: 8005416
    Abstract: A gripping device that grips a plate member provided with a long plate body, a first recess formed along a shorter length of the plate body, and a second recess formed at a position spaced apart from the first recess along a longer length of the plate body, the gripping device including: a first movable member entering the first recess; a second movable member entering the second recess; and opposing members opposed to the first and second movable members along the shorter length of the plate body and serving to grip the plate member in cooperation with the first and second movable members, wherein the gripping device grips the plate member by causing the second movable member to press against at least two positions of the second recess as well as the first movable member to press against a bottom of the first recess.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: August 23, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takashi Ohno, Yusaku Sato
  • Patent number: 8000643
    Abstract: An image forming apparatus includes a lubricant applicator and a process cartridge using the same. The lubricant applicator includes a solid lubricant, a lubricant retainer, a lubricant holder, a lubricant application mechanism, a pressure mechanism, a friction resistance reduction mechanism. The lubricant retainer holds the solid lubricant. The lubricant holder stores the solid lubricant and the lubricant retainer. The lubricant application mechanism applies the solid lubricant to an object. The pressure mechanism is provided between the lubricant retainer and the lubricant holder, and presses the lubricant retainer to push the solid lubricant from the lubricant holder. The friction resistance reduction mechanism is disposed at a position where the lubricant retainer and the lubricant holder come into contact in a frictionally sliding manner.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: August 16, 2011
    Assignee: Ricoh Company, Ltd.
    Inventor: Hiroomi Harada
  • Patent number: 8000628
    Abstract: An image forming apparatus includes: an image forming unit having a plurality of photoconductor drums arranged in tandem; an intermediate transfer belt arranged opposite to the photoconductor drums and configured to receive developer images formed on the photoconductor drums and to transfer the developer images onto a recording sheet; a cleaning unit comprising a cleaning member positioned in contact with the intermediate transfer belt and configured to collect substance adhering to the intermediate transfer belt, and a receptacle configured to store the substance collected by the cleaning member, wherein the cleaning unit is arranged on the same side as the image forming unit with respect to the intermediate transfer belt; and a support member configured to support the image forming unit and the cleaning unit and to be pulled out from a main body.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: August 16, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Shougo Sato, Susumu Sakuma
  • Patent number: 7995960
    Abstract: An image forming apparatus includes photosensitive members which are aligned along a conveying direction of a transfer medium and on each of which an electrostatic latent image is to be formed; developing units which supply a plurality of colors of developing agent to the photosensitive members, respectively; and cleaning rollers which slidably contact the photosensitive members to collect at least one of paper powder and developing agent adhering to surfaces of the photosensitive members, respectively. A most upstream cleaning roller which slidably contacts a most upstream photosensitive member in the conveying direction is provided with a paper powder absorption shaft which attracts and absorbs paper powder from the cleaning roller. A most downstream cleaning roller which slidably contacts a most downstream photosensitive member in the conveying direction is not provided with the paper powder absorption shaft.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: August 9, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Naoya Kamimura
  • Patent number: 7991342
    Abstract: A protective material block including a metal soap, wherein the surface of the protective material block has an X-ray diffraction pattern wherein a ratio (P2/P1) of a maximum peak height (P2) on a surface separation of from 3.6 to 5.0 ? to a maximum peak height (P1) on a surface separation of from 11 to 16 ? not greater than 0.5.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: August 2, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Kabata, Kumiko Hatakeyama, Kunio Hasegawa, Shinya Tanaka, Masahide Yamashita, Masato Iio, Hiroshi Nakai
  • Publication number: 20110182620
    Abstract: A fixing device that allows simple and safe replacement of heating rollers is provided, which fixing device comprises a first lamp holder provided in the inner periphery of a retaining member, and interlock means for locking and unlocking the first lamp holder and the retaining member, wherein when replacing the heat roller, the interlock between the first lamp cartridge and the retaining member is unlocked to take out the retaining member and the heating roller from the opening of the frame of the image forming apparatus, while leaving the lamp cartridge inside the apparatus.
    Type: Application
    Filed: January 21, 2011
    Publication date: July 28, 2011
    Inventor: Genichiro KAWAMICHI
  • Patent number: 7986910
    Abstract: The present invention provides a lubricant coater including an applying member for applying a lubricant powder on a surface of an image bearing member, wherein the lubricant powder contains paraffin as a main component, and the lubricant coatability of the applying member is controlled such that a maximum thickness of a lubricant film formed on the image bearing member, which is obtained after the lubricant powder is continuously applied on the surface of the image bearing member for 120 minutes, is 0.25 ?m or less.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: July 26, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Kabata, Kumiko Hatakeyama, Masahide Yamashita
  • Patent number: 7983609
    Abstract: An image forming apparatus is provided with a cassette configured to accommodate printing sheets, a casing of the image forming apparatus, a belt member which circularly moves inside the casing, a cleaning device configured to remove particles adhering on the belt member, and a collection box in which the particles removed by the cleaning unit is collected. The casing has a cassette accommodating section for accommodating the cassette, a box accommodating section defined inside the casing and communicating with the cassette accommodating section and an opening formed on the casing and communicating with the cassette accommodating section. The cassette is removably installable into the cassette accommodating section through the opening, and the collection box is detached from or inserted in the box accommodating section through the opening.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: July 19, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Eiji Yokota
  • Patent number: 7983608
    Abstract: A cleaning apparatus for cleaning toner on an image bearing member includes a cleaning blade for collecting the toner by contacting an edge portion thereof with the image bearing member, a container for storing the toner, a first rotation axis for rotatably supporting the cleaning blade, an urging member for urging the cleaning blade, a positioning portion for positioning the cleaning blade so that the cleaning blade urged by the urging member stands by at a predetermined position when the cleaning blade is not in contact with the image bearing member, and a second rotation axis for rotatably supporting the cleaning apparatus while contacting a part of a main body when the cleaning apparatus is mounted on the main body, wherein the edge portion is positioned on a straight line or away from the image bearing member with respect to the straight line connecting rotation centers of the first rotation axis and of the second rotation axis when the cleaning blade is located at the predetermined position.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: July 19, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shin-ichi Sugiyama
  • Patent number: 7974565
    Abstract: The present invention relates to a cleaning device that allows the obtaining of a high level of removal performance while reducing wear between a plate-shaped elastic member and a cleaning-targeted surface moving member, while also being able to stably maintain the contact status between the surface moving member and the plate-shaped elastic member, and an image forming apparatus and a process cartridge provided therewith.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: July 5, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiki Hozumi, Kazuhiko Watanabe
  • Patent number: 7965971
    Abstract: Blades, printing apparatuses, replaceable cartridges and methods of treating substances on surfaces are disclosed. An embodiment of a blade for treating a substance on a surface of a component includes a body having a free end portion with a surface, and which is comprised of an elastomeric material. A bi-material spring is adapted to apply a load to the body such that the surface of the body treats the substance on the surface of the component.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: June 21, 2011
    Assignee: Xerox Corporation
    Inventors: Bruce E. Thayer, Richard W. Seyfried, Cheryl A. Linton
  • Publication number: 20110142490
    Abstract: An electrophotographic image forming apparatus for forming an image on a recording material, the apparatus includes a plurality of electrophotographic photosensitive drums; a cartridge which contains a developer and which is detachably mountable to a main assembly of the apparatus of the electrophotographic image forming apparatus in a direction perpendicular to an axis of the electrophotographic photosensitive drum; a cartridge mounting portion for mounting the cartridge; a plurality of cleaning members for removing the developers remaining on surfaces of the electrophotographic photosensitive drums; a removed-developer accommodating container for accommodating the developers removed by the cleaning members, the removed-developer accommodating container being detachably mountable to the main assembly of the apparatus in a direction perpendicular to the axial direction, wherein the cartridges are disposed along a second direction, and the removed-developer accommodating container are adjacent to the cartridge
    Type: Application
    Filed: April 27, 2010
    Publication date: June 16, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Ken Kikuchi, Tsutomu Nishiuwatoko, Takashi Akutsu
  • Publication number: 20110142497
    Abstract: An image forming apparatus includes a transfer unit detachably supported by a body frame to transfer an image on an image holding member to a recording medium. A driving unit installed on the body frame provides a rotational driving force to the transfer unit. A waste developing agent container is selectively attached to the body frame to store waste developing agent collected from the transfer unit. An engagement assembly is installed on the body frame to selectively engage the transfer unit with the driving unit to the transfer unit while at the same time allowing or blocking the installation of the waste developing agent container in the body frame in accordance with the state of engagement of the transfer unit.
    Type: Application
    Filed: September 14, 2010
    Publication date: June 16, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Gi-cheol JEONG
  • Patent number: 7962066
    Abstract: A cleaning unit includes a cleaner. The cleaner includes: a support member; a toner scraping member; and a toner storing mechanism. The toner storing mechanism includes: a toner catching member provided in a vicinity of a leading end of the toner scraping member so as to catch the toner scraped off; and a swingably supporting mechanism which supports swingably the toner catching member with a middle portion of the toner catching member as a swing fulcrum. A free end portion of the toner catching member protruding from the toner scraping member in the moving direction is a storage moving portion which moves based on an amount of the stored toner, and a portion opposite to the free end portion with respect to the swing fulcrum is a press portion which presses the toner scraping member toward the cleaned member based on a moving amount of the storage moving portion.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: June 14, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kazuhiko Arai, Koichiro Yuasa
  • Patent number: 7945200
    Abstract: Systems and methods of remanufacturing an imaging cartridge include providing the imaging cartridge comprising a developer material supplying roller, a developer roller, a developer blade which regulates a layer of thickness of the developer material on the outer surface of the developer roller, the developer blade held in a first position to exert a first pressure on the outer surface of the developer roller, providing a replacement developer material having a set of characteristics, and adjusting the position of the developer blade to a second position to exert a second pressure on the outer surface of the developer roller, the second position of the developer blade selected to function with the replacement developer material having the set of characteristics.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: May 17, 2011
    Assignee: Static Control Components, Inc.
    Inventors: Jeffrey Ray Norris, Lawrence Dale Lewis
  • Patent number: 7941071
    Abstract: A lubricant application device includes a lubricant, a lubricant supplier, a lubricant smoother, and a sealing member. The lubricant is supplied to a surface of an image carrier for carrying a toner image. The lubricant supplier is provided downstream from a cleaning blade for removing residual toner after the toner image is transferred from the image carrier in a direction of movement of the image carrier and supplies the lubricant onto the surface of the image carrier. The lubricant smoother is provided downstream from the lubricant supplier in the direction of movement of the image carrier and slidably contacts the image carrier to smooth the supplied lubricant. The sealing member seals a space between the cleaning blade and the lubricant smoother at both ends of the lubricant supplier in an axial direction of the image carrier.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: May 10, 2011
    Assignee: Ricoh Company Limited
    Inventor: Akira Fujimori
  • Patent number: 7941067
    Abstract: An apparatus (100) that detects blade deflection from a print assembly contact surface is disclosed. The apparatus can include a print assembly (110) rotationally supported in the apparatus, where the print assembly can have a print assembly contact surface (112) and a print assembly conductor (114). The apparatus can include a blade (120) configured to be coupled to the print assembly contact surface and a blade conductive layer (130) coupled to the blade. The apparatus can include a sensor (140) configured to measure a capacitance between the blade conductive layer and the print assembly conductor.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: May 10, 2011
    Assignee: Xerox Corporation
    Inventors: Bruce Earl Thayer, Aaron Michael Burry
  • Publication number: 20110091243
    Abstract: An image forming apparatus including: an image carrier, rotating in a first direction and a second direction, and the second direction is opposite to the first direction; a transfer device for transferring the toner image; a cleaning device comprising a cleaning blade for cleaning the image carrier; and a cleaning blade exchanging section for exchanging the cleaning blade, wherein the apparatus works in such ways that, after the cleaning blade exchanging section has retracted the cleaning blade to a retracted position, the cleaning blade exchanging section rotates the image carrier in the second direction, whereby any foreign material, adhered onto the image carrier while the cleaning blade is exchanged, is moved upstream of the cleaning position of the cleaning blade, then the cleaning blade is pressed against the image carrier, and the image carrier is subsequently rotated in the first direction, so that the image carrier is cleaned.
    Type: Application
    Filed: October 6, 2010
    Publication date: April 21, 2011
    Inventors: Toshiaki Tomino, Hiroshi Isokawa, Shinichi Tsukamura, Tetsuya Ishikawa
  • Publication number: 20110085821
    Abstract: An image forming apparatus includes an image carrier, a developing device that forms a toner image on the surface of the image carrier, a transfer unit that transfers the toner image formed on the image carrier onto a transfer material such as paper, a neutralizing unit that neutralizes an electrostatic latent image on the surface of the image carrier by light radiation, a cleaning unit that cleans toner remaining on the surface of the image carrier after the toner image is transferred. The image carrier, the developing device, the transfer unit, the neutralizing unit, and the cleaning unit are provided to the main body of the image forming apparatus. The image forming apparatus further includes a withdrawal mechanism that withdraws at least the image carrier, the cleaning unit, and the neutralizing unit integrally from the main body of the image forming apparatus.
    Type: Application
    Filed: September 17, 2010
    Publication date: April 14, 2011
    Inventor: Toshiya Satoh
  • Patent number: 7917061
    Abstract: Disclosed is an image forming apparatus with an improved structure for mounting or dismounting a cleaning device. An image forming unit includes an image carrier for transporting a developer image. A cleaning device includes a cleaning member to remove residual developer from the image carrier. The cleaning device is mounted or dismounted to/from the image forming unit by moving along a first direction and along a second direction. A first guide device includes a restraining unit to generally restrict movement of the cleaning device in the second direction when the cleaning device moves in the first direction, and a receiving unit to receive the restraining unit so as to allow the cleaning device to move in the second direction when desirable.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: March 29, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hye Young Min, Moon Bae Park
  • Patent number: 7907867
    Abstract: There is provided a cleaning device capable of maintaining a sufficient cleaning effect by preventing creep deformation of a cleaning member. The cleaning device of the present invention for cleaning a transfer body in an image forming apparatus includes a first cleaning member whose top end is brought into pressure contact with the transfer body, and a second cleaning member which is placed downstream from the first cleaning member with respect to a moving direction of the transfer body and whose top end is brought into pressure contact with the transfer body, wherein the second cleaning member is provided rotatably with respect to the first cleaning member.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: March 15, 2011
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Fuminori Moro, Shoichi Yoshikawa, Toshiyuki Sakai, Hiroshi Ibaraki, Takayuki Ito
  • Patent number: 7899355
    Abstract: An image forming apparatus includes: an image forming unit including a plurality of photoconductor drums arranged in tandem; a conveyor belt arranged opposite to the photoconductor drums and configured to convey a recording sheet; and a cleaning unit including a cleaning member positioned in contact with the conveyor belt and configured to collect substance adhering to the conveyor belt, and a receptacle configured to store the substance collected by the cleaning member. The cleaning member is arranged on the same side as the image forming unit with respect to the conveyor belt and upstream from the image forming unit as viewed in a sheet conveyance direction along which the recording sheet is conveyed on the conveyor belt, and the image forming unit and the cleaning unit are pulled out together from a main body of the image forming apparatus toward an upstream side of the sheet conveyance direction.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: March 1, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Susumu Sakuma
  • Patent number: 7890016
    Abstract: A charging apparatus includes a charging roller and a cleaning member. The charging roller charges a surface of an image bearing body. The cleaning member extends in a longitudinal direction parallel to the charging roller and that cleans the charging roller. The charging apparatus includes a bearing and a supporting member. The bearing supports a shaft of the charging roller. The cleaning member is mounted to the supporting member the cleaning member is held between the supporting member and the charging roller. The supporting member includes a surface to which the cleaning member is mounted, the surface being a curved surface configured to a circumferential surface of the charging roller. The supporting member includes a surface to which the cleaning member is mounted, the surface including a flat portion extending upstream with respect to rotation of the charging roller and a curved portion extending downstream.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: February 15, 2011
    Assignee: Oki Data Corporation
    Inventor: Atsushi Ota
  • Patent number: 7882590
    Abstract: The present invention provides a cleaning assembly for use in a media processing device. In various embodiments, the cleaning assembly includes a first roller that at least partially engages a second roller, and a media feed path that passes between the first roller and the second roller. There may also be a third roller that at least partially engages the second roller, and which may be replaceable. In one embodiment, the second roller defines a surface adherence that is greater than a surface adherence of the first roller and the third roller defines a surface adherence that is greater than the surface adherence of the second roller. As a result, the present invention provides a cleaning assembly capable of cleaning opposed surfaces of a media unit in a single pass.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: February 8, 2011
    Assignee: ZIH Corp.
    Inventor: Thomas Richard Helma
  • Patent number: 7881651
    Abstract: A lubricant applying device, includes: an image carrier; a lubricant; a lubricant applying member that contacts the image carrier and the lubricant, and maintains a portion of the lubricant on an outer periphery of the lubricant applying member due to rotating so as to apply the lubricant to the image carrier; and a solid material that is adjacently provided with the lubricant on an upstream side in a rotation direction of the lubricant applying member, wherein the solid material has a higher level of hardness than the lubricant and is worn out due to contact with the lubricant applying member.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: February 1, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Sho Watanabe
  • Patent number: 7873302
    Abstract: A cleaning device includes a cleaning blade, a receiving member, an inlet seal, an adhering member, and an end seal. The cleaning blade is brought into contact with a photosensitive drum to remove residual toner therefrom. The receiving member receives the residual toner. The inlet seal guides the residual toner to the receiving member. The adhering member adheres the inlet seal to the receiving member. The end seal is arranged along the end portions of the cleaning blade and the inlet seal. The inlet seal covers the end seal and extends out from the end seal in its longitudinal direction.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: January 18, 2011
    Assignee: Ricoh Company, Limited
    Inventors: Yoshihiro Kawakami, Koji Kato, Hirobumi Ooyoshi, Tomofumi Yoshida, Kenzo Tatsumi, Yoshiyuki Shimizu, Tomohiro Kubota
  • Patent number: 7858277
    Abstract: A photosensitive body according to this invention includes a photosensitive layer formed on a surface thereof for being electrically charged and having an electrostatic latent image formed thereon by being exposed to light irradiation, and wherein the photosensitive layer has an initial dynamic friction coefficient ?k0 of 0.6 or less against a prescribed member, and wherein where a dynamic friction coefficient of the photosensitive layer against the prescribed member after a prescribed friction is given is defined as a dynamic friction coefficient ?k1, the photosensitive layer has a dynamic friction coefficient variation amount ??k, as a difference between the initial dynamic friction coefficient ?k0 and the dynamic friction coefficient ?k1, of 0.06 or less.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: December 28, 2010
    Assignee: Oki Data Corporation
    Inventor: Makoto Takeda
  • Patent number: 7853170
    Abstract: An image forming apparatus including a cartridge that has a photosensitive drum and can be attached to and detached from a main body of the image forming apparatus, an optical device that has a cover glass through which light emitted toward the photosensitive drum passes, a cleaning member that can move from a cleaning start position to a cleaning end position for cleaning the cover glass, and a lock member that prevents the cleaning member from moving. Before the cartridge is attached, the lock member prevents the cleaning member from moving in the longitudinal direction of the cover glass. During the attachment of the cartridge, the cartridge engages with the lock member and unlocks the cleaning member and enables the cleaning member to move from the cleaning start position.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: December 14, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Ueda, Shuji Nishitani, Naonori Kayama, Masaki Sato, Hiroshi Kawamura
  • Patent number: 7848694
    Abstract: An image forming device including toner image forming means that forms toner images on the surface of an image carrier, transfer means that transfers the toner images on the surface of the image carrier onto a transfer member, and a plate shaped cleaning blade. The cleaning blade is configured to contact the surface of the image carrier at a pressure of greater than 40 N/m and to scrape off residual toner remaining on the surface of the image carrier after the transfer process by the transfer means has been completed. The surface of the image carrier has a static coefficient of friction with a sheet as measured by the Euler belt type coefficient of friction measurement method of 0.5 or greater, and the cleaning blade has a static coefficient of friction with a polytetrafluoroethylene tape in the range 1.0 to 2.0.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: December 7, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoki Nakatake, Hidekazu Shono
  • Publication number: 20100296839
    Abstract: There is provided an image forming apparatus in which occurrence of defective cleaning is prevented, replacement is easy, and occurrence of toner spillage can also be prevented. A cleaner unit of an image forming apparatus of the invention includes a cleaning member that is brought into contact with a toner bearing body in order to collect toner from the toner bearing body bearing the toner, a toner removal member to remove the toner from the cleaning member, and a waste toner storage part to store the removed toner, the cleaning member, the toner removal member and the waste toner storage part are integrally constructed into a unit structure, and the unit is constructed to be attachable to and detachable from the toner bearing body or a main body of the image forming apparatus.
    Type: Application
    Filed: August 9, 2010
    Publication date: November 25, 2010
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Takeshi Watanabe, Masashi Takahashi, Mitsuaki Kouyama
  • Patent number: 7840157
    Abstract: To improve the user maintainability and cost performance with respect to replacing replaceable components in an image forming apparatus using a tandem type intermediate transfer member.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: November 23, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoki Nakatake, Hidekazu Shono, Takeshi Yamashita
  • Patent number: 7835682
    Abstract: Disclosed is an image forming apparatus, comprising: an image carrier; a brush to remove toner remaining on the image carrier by scrubbing a surface of the image carrier; a flicker to remove the toner adhering to the brush by contacting to the brush; a brush driving section to rotate the brush; and a control section to obtain a quantity of the toner adhering to the brush and to control the brush driving section so as to change a rotation speed of the brush based on the obtained quantity of the toner.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: November 16, 2010
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Satoshi Nishida, Hiroshi Morimoto, Kazuteru Ishizuka