Cleaning Of Imaging Surface Patents (Class 399/343)
  • Patent number: 10551786
    Abstract: An image forming apparatus includes a main assembly, a photosensitive drum, an optical print head, a receiving portion, a portion-to-be-engaged, and a guiding portion. The guiding portion is provided between the portion-to-be-engaged and the receiving portion with an interval from both the portion-to-be-engaged and the receiving portion. The guiding portion guides movement of a cleaning member in a direction from the receiving portion toward the portion-to-be-engaged while limiting movement of the cleaning member in a direction different from the longitudinal direction of the cleaning member to engage the engaging portion with the portion-to-be-engaged.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: February 4, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hitoshi Iwai, Daisuke Aruga, Shinichiro Hosoi, Toshiki Momoka, Takehiro Ishidate, Yuya Tamura, Shinichiro Kaikawa
  • Patent number: 10480638
    Abstract: A drive transmitter includes a group of gears to which grease is applied, at least one gear of the group of gears being an internally toothed gear, multiple pulleys, and a drive belt wound around the multiple pulleys to drive the group of gears. An image forming apparatus includes the drive transmitter.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: November 19, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Masahiro Ishida, Narumi Sugita, Naoki Matsuda
  • Patent number: 10001737
    Abstract: An image forming apparatus includes: an image carrier, a developing section, a transfer roller, a power supply section, a conveyance roller, and an operation control section. The operation control section has a cleaning operation mode and an image formation operation mode where images are formed on recording paper. In the cleaning operation mode, the operation control section causes the developing section to supply a predefined amount of toner to a circumferential surface of the image carrier, causes the power supply section to apply a bias of a polarity opposite to a normal charge polarity to the transfer roller, then causes the conveyance roller to convey a single piece of recording paper, causes the conveyance roller to stop rotating operation when the recording paper is located in a nip area, and causes the image carrier and the transfer roller to rotate while the recording paper is stopped in the nip area.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: June 19, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Katsuya Ota
  • Patent number: 9962942
    Abstract: A printing apparatus includes a transport belt which transports a printing medium in a transport direction; a cleaning tank which stores cleaning liquid; and a first cleaning roller and a second cleaning roller which are dipped in the cleaning liquid and are rotatably in contact with the transport belt. The first cleaning roller and the second cleaning roller include spiral brushes which generate water flow for directing the cleaning liquid in one direction by the rotation of the first cleaning roller and the second cleaning roller.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: May 8, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Shuichi Kanemoto
  • Patent number: 9858514
    Abstract: A print control apparatus includes a receiving unit receiving a print instruction; a first converting unit converting a dimension of a sheet of paper specified in a first unit in the print instruction to a dimension in a second unit different from the first unit; a second converting unit converting the dimension in the second unit to a dimension in a third unit employed by a print apparatus; an acquiring unit acquiring, from the print apparatus, information regarding a standard dimension list in the third unit; a selecting unit selecting, from the information, a standard dimension that matches, within a preset tolerance range, the dimension in the third unit; a generating unit generating print data by processing the print instruction by using the selected dimension; and an output controller specifying the selected dimension to control output of the print apparatus on the basis of the print data.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: January 2, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Hisao Komazawa
  • Patent number: 9707751
    Abstract: A transfer-type ink jet recording apparatus including an intermediate image forming unit for applying an ink containing a resin to an intermediate transfer member to form an intermediate image and a transfer unit for transferring the intermediate image to a recording medium. The apparatus further includes a heating unit for heating the intermediate image to a temperature equal to or higher than the minimum film forming temperature of the resin and a cooling unit for cooling the intermediate image heated by the heating unit to a temperature lower than the glass transition temperature of the resin to supply the image to the transfer unit.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: July 18, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Eisuke Nishitani, Takumi Otani, Takayuki Sekine, Koichiro Nakazawa
  • Patent number: 9494888
    Abstract: An electrophotographic imaging device includes a charging device, a cleaning device, and a fuser member that each include hydrophobic carbon nanotubes. The use of hydrophobic carbon nanotubes can increases the charging device's, the cleaning device's, and the fuser member's durability, conductivity, and contaminants deposition.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: November 15, 2016
    Assignee: XEROX CORPORATION
    Inventors: Liang-Bih Lin, David H Pan, Daniel Levy, Jin Wu
  • Patent number: 9483009
    Abstract: An image forming apparatus (100) forms an image on a recording medium. The image forming apparatus (100) includes a substrate (161), a photosensitive drum (120), a heating element (163) that heats the photosensitive drum (120), a light emitting element (162) that performs static elimination on the photosensitive drum (120), and a metal member (167) that transfers heat from the heating element (163) to the photosensitive drum (120). The light emitting element (162) and the heating element (163) are mounted on one of main surfaces of the substrate (161). The metal member (167) is in contact with another of the main surface of the substrate (161).
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: November 1, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Yosuke Saito, Shigeki Tsukahara, Ai Takagami, Masaki Kadota
  • Patent number: 9268264
    Abstract: A mode is executed so that a lubricant applying member is rotated based on an image formation start signal, and thereafter a rotation drive of an image bearing member is started.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: February 23, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Makoto Saito
  • Patent number: 9201374
    Abstract: According to one embodiment, an image forming apparatus having an image erasing function to erase an image formed on a recording medium. The apparatus has a heating unit to erase an image, a conveying unit, and a control unit. The control unit controls the conveying unit, when the image is erased, and also when a heating temperature of the heating unit is lower than an erasing temperature, to make the recording medium once stand by at a position in the middle of a conveying path of the conveying unit, and then to convey the recording medium to the heating unit.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: December 1, 2015
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventor: Toshiyuki Umetsu
  • Patent number: 9025209
    Abstract: An image forming apparatus has a control unit configured to: after an image is formed in a color mode, if an integrated supply amount is larger than or equal to a reference supply amount, cause a supply image with a first amount of developer, otherwise, cause a supply image with a second amount of developer larger that the first amount; and, after an image is formed in the monochrome mode, cause a supply image with a third amount of developer smaller than the first amount, and, to make an interval between recording materials when the supply image with the third amount is formed shorter than an interval between recording materials when the supply image with the first amount or larger is formed.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: May 5, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kimitaka Ichinose, Kazuhiro Funatani, Tetsuichiro Fujimoto
  • Patent number: 9002236
    Abstract: A cleaning device, which is detachably attached to a main body of an image forming apparatus, includes a fixing portion provided at a frame member, a cleaning member fixed to the fixing portion for removing a developer from an image bearing member, the cleaning member including a blade portion configured to contact the image bearing member and a flexible support member for supporting the blade portion, a container formed by the frame member and configured to contain the developer removed from the image bearing member, and a restricting member configured to engage with the support member and being capable of restricting the support member from being deformed.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: April 7, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masao Uyama
  • Patent number: 8995861
    Abstract: In an image forming apparatus, when no image is being formed, an image bearing member is rotated at least one rotation, in a state in which a transfer bias is controlled such that a potential on a surface of the image bearing member on the upstream side in the rotational direction of a cleaning apparatus is a polarity opposite to that of a developer.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: March 31, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takuya Kitamura, Hideo Kihara, Yuji Kawaguchi, Kouki Yano, Yuta Isobe
  • Patent number: 8948676
    Abstract: An image forming apparatus includes an image bearing member to bear a toner image, a waste toner storage mechanism to store residual toner, and an intermediate transfer unit detachable from the image forming apparatus. The intermediate transfer unit includes an intermediate transfer member onto which the toner image is transferred, a cleaning device to remove residual toner remaining on the intermediate transfer member after the toner image is transferred to a recording medium, and a connecting mechanism to connect the cleaning device and the waste toner storage mechanism. The connecting mechanism includes a movable connecting tube and a moving device to move the connecting tube between a first position at which the connecting tube engages the cleaning device and the waste toner storage mechanism, and the second position at which the connecting tube separates the cleaning device from the waste toner storage mechanism.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: February 3, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Takeshi Fukao
  • Patent number: 8923743
    Abstract: An image forming apparatus configured to apply a necessary amount of a lubricant to an image bearing member while preventing the lubricant from being excessively consumed. An intermediate transfer belt drive motor controlled by a PID controller drives an intermediate transfer belt. A brush rotation controller for controlling an application brush drive motor detects fluctuation in a frictional force between a cleaning blade and the intermediate transfer belt, and controls the application brush drive motor such that an amount of lubricant to be applied is an amount corresponding to the detected fluctuation in the frictional force.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: December 30, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takeyuki Suda
  • Publication number: 20140376964
    Abstract: An electrophotographic imaging device includes a charging device, a cleaning device, and a fuser member that each include hydrophobic carbon nanotubes. The use of hydrophobic carbon nanotubes can increases the charging device's, the cleaning device's, and the fuser member's durability, conductivity, and contaminants deposition.
    Type: Application
    Filed: September 8, 2014
    Publication date: December 25, 2014
    Inventors: Liang-Bih Lin, David H Pan, Daniel Levy, Jin Wu
  • Publication number: 20140348560
    Abstract: A member moving mechanism includes a moving member movable in first positive and negative directions, a moved member that moves in second positive and negative directions when the moving member moves, a belt member connecting the moving member to the moved member, a belt-member guide member, an openable-closable cover engaged with the moving member, a first biasing member that biases the moved member in the second negative direction, and a second biasing member that biases the moving member in the first positive direction with a biasing force larger than that of the first biasing member. The moving member moves in the first positive direction with the biasing force of the second biasing member when the openable-closable cover moves in an opening direction, while the moving member moves in the first negative direction against the biasing force of the second biasing member when the openable-closable cover moves in a closing direction.
    Type: Application
    Filed: May 20, 2014
    Publication date: November 27, 2014
    Applicant: KYOCERA Document Solutions Inc.
    Inventor: Akinori MATSUNO
  • Patent number: 8897665
    Abstract: A photosensitive member unit includes a photosensitive member, first and second side walls, a rotatable body and a unit electrode. The photosensitive member defines an axis extending in an axial direction, and has first and second end portions in the axial direction. The first side wall rotatably supports the first end portion and the second side wall rotatably supports the second end portion. The rotatable body is rotatably disposed between the first and the second side walls. The rotatable body confronts and contacts the photosensitive member in a prescribed direction perpendicular to the axial direction to be movable in the prescribed direction. The unit electrode is provided at the first side wall and supports the rotatable body, the first side wall supporting the unit electrode to permit the unit electrode to be movable in the prescribed direction in conjunction with movement of the rotatable body in the axial direction.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: November 25, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Naoya Kamimura
  • Patent number: 8837972
    Abstract: An image forming apparatus includes an image bearing body, a latent image forming section that forms a latent image on the image bearing body, a development section that develops the latent image using toner, a transfer section that transfers a toner image to a transferred body, a pressuring and contacting section that pressures and contact the transfer section against and with the image bearing body via the transferred body, a cleaning blade that removes residual toner, and a controller. The controller analyzes a print pattern of the image to be formed on the sheet. The controller controls the pressuring and contacting section to change a contact state between the image bearing body and the transferred body while adjusting an image patch formed in a domain corresponding to an inter-sheet portion between the sheet and the next sheet on the image bearing body according to an analysis result.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: September 16, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Yohei Nakade
  • Patent number: 8827410
    Abstract: A method of cleaning a heated drum within a continuous web printer includes operating an actuator to rotate a drum that is heated to a first temperature. The drum rotates in a process direction of a media web contacting the drum and heats the media web as the media web moves over a portion of the drum. The method also includes stopping movement of the media web, heating the drum to a second temperature that is greater than the first temperature, and operating the actuator to rotate the drum against a portion of the stopped media web to transfer ink from the drum to the portion of the stopped media web.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: September 9, 2014
    Assignee: Xerox Corporation
    Inventors: Joseph C. Sheflin, Michael J. Levy, Jason M. LeFevre
  • Patent number: 8831471
    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: July 18, 2013
    Date of Patent: September 9, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Shougo Sato, Susumu Sakuma
  • Patent number: 8824936
    Abstract: The image forming apparatus is an image forming apparatus including an image bearing member, a developing device, a transfer device, and a cleaning device. The developing device includes a toner bearing member having a surface subjected to alumite treatment. Toner that is used in the image forming apparatus is magnetic mono-component developer including magnetic toner particles containing at least binder resin and iron-containing magnetic powder, and an external additive to be externally added to the magnetic toner particles. The external additive is formed from inorganic fine particles which have been subjected to surface treatment with a tin-containing compound and an antimony-containing compound. In the image forming apparatus, the ratio of antimony to iron of the toner that has been removed by the cleaning device is double or more the ratio of antimony to iron of the toner before being conveyed by the toner bearing member.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: September 2, 2014
    Assignee: Kyocera Document Solutions Inc.
    Inventor: Takeshi Arakawa
  • Patent number: 8824004
    Abstract: An image forming apparatus and method are provided. The image forming apparatus includes a communication interface unit that receives printing data, an image forming unit that performs an ordinary printing to form an image on printing paper based on the printing data, a paper supplying unit that provides the printing paper to the image forming unit along with a paper supplying route, a determination unit that determines whether a functional printing may be performed on the paper supplying route in an interval section between sheets of the printing paper, and a controller that controls the image forming unit to perform a functional printing, wherein the ordinary printing is a printing performed on one or more sheets of printing paper, and the functional printing is a printing performed in an interval section between the sheets of printing paper.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: September 2, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Myung-ho Kyung, Jeong-hwan Kim, Byoung-chul Bae
  • Publication number: 20140219691
    Abstract: A method of transferring an image includes the steps of; bringing an image bearer bearing an image thereon as a transfer origin in contact with a transferring objective (onto which the image is transferred) as a transfer destination; moving at least one of the image bearer and the transferring objective in a prescribed direction; and sequentially transferring the image borne on the image bearer onto the transferring objective in a contacting section in which the image bearer and the transferring objective contact each other in a direction in which the image does not pass through the contacting section.
    Type: Application
    Filed: January 24, 2014
    Publication date: August 7, 2014
    Inventors: Junichi Ichikawa, Kenji Sengoku, Shinya Tanaka, Junpei Fujita, Kunio Hasegawa
  • Patent number: 8798495
    Abstract: An image forming apparatus includes a housing provided with an opening opposed to a developer carrying member that carries developer; a collecting member provided along a downstream edge of the opening in a transporting direction of the developer and capable of coming into contact with and separating from the developer carrying member; a sealing member provided along an upstream edge of the opening in the transporting direction; a suction member that sucks air from the opening; a suction path provided between the opening and the suction member; an opening-closing unit that opens or closes the suction path; and a controller that controls the opening-closing unit so as to open the suction path at a time that is before separation of the collecting member from the developer carrying member and a predetermined time period after the time of contact between the collecting member and the developer carrying member.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: August 5, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroyuki Koide, Katsunori Kikuchihara, Kazuyuki Yagata
  • Patent number: 8784946
    Abstract: A method feeds a continuous core of a print cartridge cleaning blade along a path. The path passes, in the following order, firstly through a coating bath or spray coating station, secondly by a curing station, thirdly through a cutter, and fourthly to a finisher station. Thus, the method herein coats portions of the continuous core that are in the coating bath/spray station with an outer covering. For portions of the continuous core that are adjacent the curing station, the method cures the outer covering of the continuous core; for portions of the continuous core that are in the cutter, the method cuts the continuous core into predetermined lengths; and for portions of the predetermined lengths of the continuous core that are adjacent the finishing station, the method finishes the outer covering of the predetermined lengths of the continuous core to produce a finished print cartridge cleaning blade.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: July 22, 2014
    Assignee: Xerox Corporation
    Inventors: Jeffrey M. Fowler, Steven C. Hart
  • Patent number: 8781384
    Abstract: A cleaning blade, which is configured to be pressed against a toner image carrier that rotates in one direction, for removing residual toner from the toner image carrier, the cleaning blade having: a contact layer that is located in a side to come into contact with the toner image carrier; and a supporting layer that is located in a side not to come into contact with the toner image carrier, wherein tensile stress characteristic curves of a material of the contact layer and a material of the supporting layer intersect with each other. An image forming apparatus having a toner image carrier and the cleaning blade.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: July 15, 2014
    Assignee: Konica Minolta, Inc.
    Inventors: Kuniaki Kashiwakura, Tsugihito Yoshiyama, Yoshiki Nakane, Hokuto Hatano, Yohei Ito
  • Patent number: 8745870
    Abstract: A regenerated elastic rollers manufacturing process is provided. The process includes the step of removing an agglutinated stain of toner adhered to the surface of an elastic roller including a mandrel and an elastic layer. The step further includes the steps of: (1) pressing a pressing roller against the surface of the elastic roller so as to crack the agglutinated stain on the surface of the elastic roller; and (2) removing the agglutinated stain cracked in the step (1) from the surface of the elastic roller by means of an adhesive roller.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: June 10, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kunimasa Kawamura, Masahiro Watanabe, Kazuaki Nagaoka
  • Publication number: 20140147182
    Abstract: An image forming apparatus includes an image bearing member, an image forming unit for forming a toner image and a toner pattern comprising toner not to be transferred onto a recording medium for adjustment of a density of toner on a surface of the image bearing member, a nip forming member contacting the surface of the image bearing member to form a transfer nip therebetween, a transfer bias applicator for applying a transfer bias in which an alternating current component and a direct current component are superimposed to transfer the toner image onto the recording medium in the transfer nip, a first cleaning device to mechanically remove toner remaining on the image bearing member after passing through the transfer nip. The transfer bias applicator applies a charge eliminating bias to remove charge from toner in the toner pattern when the toner pattern passes through the transfer nip.
    Type: Application
    Filed: January 29, 2014
    Publication date: May 29, 2014
    Inventors: Kenji Sengoku, Hiroyoshi Haga, Hiromi Ogiyama, Yasunobu Shimizu, Tomokazu Takeuchi
  • Patent number: 8725054
    Abstract: An image forming device, including: photosensitive bodies arranged in parallel in a predetermined direction; a belt that runs in the predetermined direction to transfer a developer image formed on each of the photosensitive bodies to a sheet-like medium; recovering members that are respectively provided for the photosensitive bodies, wherein each recovering member recovers adhered substances adhered to each photosensitive body after the developer image was transferred to the sheet-like medium; a belt cleaner that removes the adhered substances adhered to the belt; a cleaning process execution unit that executes a cleaning process in which the adhered substances are transferred from each recovering member to the belt via each photosensitive body; and a cleaning time determination unit that determines a time period for which the cleaning process is executed, based on a color of the image formed on the sheet-like medium.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: May 13, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Tsunemitsu Fukami, Tetsuya Okano
  • Patent number: 8682208
    Abstract: A cleaning device including: multiple cleaning members arranged consecutively in a direction of movement of a cleaning target to remove adhered substances from the cleaning target; multiple casings to individually hold and at least partially enclose the multiple cleaning members, respectively, the casings and the cleaning members together constituting multiple sub-units; and a sub-unit holder to hold the multiple sub-units, from which the sub-units are individually removable.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: March 25, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Akira Asaoka, Takaya Muraishi, Kenji Sugiura, Hisashi Kikuchi, Yoshiki Hozumi, Yuu Sakakibara
  • Patent number: 8682210
    Abstract: An image-forming device includes photosensitive drums arranged parallel to each other and extending in a first direction; developing units corresponding to the photosensitive drums; a belt in contact with the photosensitive drums and moving in a second direction crossing the first direction; a cleaner for cleaning waste toner on the belt; a first conveying unit extending in the first direction; a second conveying unit extending in the first direction separately from the first conveying unit in a third direction orthogonal to the first and second directions; and a connecting unit connecting the first and second conveying units. The toner is conveyed by the first conveying unit to pass through the connecting unit, and conveyed by the second conveying unit. One of the developing units includes a toner container. The connecting unit is positioned on one end side of the photosensitive drums and overlaps the container in the first direction.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: March 25, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Shougo Sato, Susumu Sakuma
  • Patent number: 8670685
    Abstract: A cleaning blade mounting method includes the steps of: moving a toner image carrier on which a toner layer is formed so that the toner layer reaches a cleaning position by a cleaning device; after bringing a tip of a cleaning blade into contact with the toner layer, bringing the tip into contact with the toner image carrier, mounting the cleaning blade to a temporary position with a second load lower than a first load that is a contact load at a time of an image formation; moving the cleaning blade with the second load from the temporary position to a final position at which a cleaning operation is carried out; bringing the cleaning blade with the first load into contact with the toner image carrier; and mounting the cleaning blade to the final position at the time of the image formation.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: March 11, 2014
    Assignee: Konica Minolta Business Technologies, Inc
    Inventor: Satoshi Nishida
  • Patent number: 8655215
    Abstract: A method for reducing wear upon an electro-photographic printer drum includes the steps of determining a non-image region of a page to be printed, applying a halftone pattern of toner to a portion of the printer drum corresponding to the non-image region, and rotating the printer drum against a cleaning blade, the halftone pattern of toner providing lubrication between the drum and the cleaning blade.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: February 18, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Steve Testardi, Anthony Holden
  • Publication number: 20140044463
    Abstract: An image forming apparatus includes an image bearing member to bear a toner image, a waste toner storage mechanism to store residual toner, and an intermediate transfer unit detachable from the image forming apparatus. The intermediate transfer unit includes an intermediate transfer member onto which the toner image is transferred, a cleaning device to remove residual toner remaining on the intermediate transfer member after the toner image is transferred to a recording medium, and a connecting mechanism to connect the cleaning device and the waste toner storage mechanism. The connecting mechanism includes a movable connecting tube and a moving device to move the connecting tube between a first position at which the connecting tube engages the cleaning device and the waste toner storage mechanism, and the second position at which the connecting tube separates the cleaning device from the waste toner storage mechanism.
    Type: Application
    Filed: October 17, 2013
    Publication date: February 13, 2014
    Inventor: Takeshi FUKAO
  • Patent number: 8639172
    Abstract: A sheet-fed duplex and a sheet-fed duplex multi-color printer which is compact, using an electrophotographic printing system. For a long image to be printed on both faces of a sheet of paper, the printer enables producing printed matter at high efficiency and high precision, and yet when printing front and rear faces of a sheet of paper in succession the printer is able to prevent a printing face of the sheet of paper printed on upstream in its conveyance direction from becoming soiled by toner transferred from a printing face of the sheet of paper printed on downstream in its conveyance direction.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: January 28, 2014
    Assignee: Miyakoshi Printing Machinery Co., Ltd.
    Inventors: Hideo Izawa, Kenji Takahashi, Junichi Setoyama
  • Patent number: 8606126
    Abstract: The image forming apparatus comprises: a first driving section causing an image carrying body carrying a developer image to perform regular rotation or reverse rotation; a fixing section fixing the developer image and conveying a sheet; a second driving section rotating the fixing section; and a control section. The control section controls the first driving section to cause the image carrying body to perform regular rotation such as to convey the sheet and transfer onto the sheet the developer image formed on the image carrying body, and controls the second driving section to cause the fixing section to fix the developer image on the sheet. Further, in a state that the fixing section nips but does not convey the sheet, the control section controls the first driving section to cause the image carrying body to perform reverse rotation so that the image carrying body is cleaned using the sheet.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: December 10, 2013
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Tetsuya Okano, Yuki Fukusada, Yoshifumi Kajikawa
  • Patent number: 8600265
    Abstract: An image forming apparatus includes a photosensitive member; a charging device for electrically charging the photosensitive member; an exposure device for exposing to light the photosensitive member charged by the charging device to form an electrostatic image on the photosensitive member; a developing device for developing the electrostatic image on the photosensitive member with toner to form a toner image; a transfer portion for transferring the toner image from the photosensitive member onto an image receiving member; a toner charging portion, disposed upstream of the charging device and downstream of the transfer portion with respect to a rotational direction of the photosensitive member, for electrically charging the toner remaining on the photosensitive member without being transferred onto the image receiving member; and control portion for controlling the charging device and the exposure device so that a stripe-shaped electrostatic image is repeatedly formed in substantially parallel to a longitudina
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: December 3, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jiro Kinokuni, Michihiro Yoshida
  • Patent number: 8594552
    Abstract: To provide a blade for electrophotographic apparatus that can have much superior durability as being made low frictional at its touching part and also improved in bonding force between the touching part and the blade member, a blade for electrophotographic apparatus is provided which has a blade member having a touching part which is to come into touch with an object member, and a support member which holds the blade member; the touching part being formed of a material which is different from that for the blade member; the touching part having a touching face having a coefficient of static friction which is smaller than that of a surface of the blade member; and the touching part having a joint surface at which the touching part is joined with the blade member which joint surface has a center line average roughness Ra of from 0.5 ?m to 10.0 ?m.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: November 26, 2013
    Assignee: Canon Kasei Kabushiki Kaisha
    Inventors: Arihiro Yamamoto, Erika Umeki, Syouji Inoue
  • Patent number: 8583022
    Abstract: A lubricant supplying device comprises a solid lubricant, a lubricant applicator to scrape and supply the lubricant to a target, and a pressing mechanism to press the solid lubricant against the lubricant applicator. An amount of pressure applied to the solid lubricant by the pressing mechanism increases until one of a thickness of the solid lubricant and a number of printed sheets reaches a prescribed level after the lubricant starts being consumed.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: November 12, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Yohhei Watanabe, Tsutomu Katoh, Hajime Teraji, Yoshihisa Watanabe, Arinobu Yoshiura
  • Patent number: 8583021
    Abstract: A method of maintaining a photoconductive member of an image forming apparatus is disclosed. The method includes applying fluid to a photoconductive member to form an image thereon, transferring the fluid from the photoconductive member in the form of the image and providing sponge applicator fluid to respective sponge applicator units. The method also includes squeezing the sponge applicator units to remove at least a portion of the sponge applicator fluid therefrom and sequentially placing each one of the sponge applicator units in contact with the photoconductive member to cool and clean the photoconductive member.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: November 12, 2013
    Assignee: Hewlett_Packard Indigo B.V.
    Inventors: Giries Kadis, Wael Salalha, Shunit Petachia, Sharon Nagler, Marko Richter, Assaf Bendek, Roy Har-Tsvi
  • Patent number: 8565661
    Abstract: A cleaning device that can be incorporated in an image forming apparatus which includes an image carrier configured to form a toner image, and a cleaning device configured to clean residual toner on the surface of the image carrier. The cleaning device includes a cleaning blade having a blade member provided to contact the surface of the image carrier and a holder to hold the blade member. The cleaning device further includes a frame to hold the cleaning blade and a vibration suppression member provided across the cleaning blade and the frame to couple the cleaning blade and the frame together and suppress vibration.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: October 22, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Michiya Okamoto, Hiroyuki Nagashima, Fumihito Itoh, Hiroshi Ono, Ken Amemiya, Masahiko Shakuto, Toshio Koike, Yuji Arai, Kaoru Yoshino, Takuma Iwasaki
  • Patent number: 8548351
    Abstract: An image-forming device includes a plurality of developing units, an endless belt, and a cleaning unit. The cleaning unit includes a cleaning member and a conveying unit. The cleaning member contacts the endless belt to clean toner remaining on the endless belt. The conveying unit includes a first conveying unit, a second conveying unit, and a first relaying member. The first relaying member relays the remaining toner conveyed by the first conveying unit to the second conveying unit, and has a relay-axis. The cleaning member pivots about the relay axis to move between a contacting position for contacting the endless belt and a separating position for separating from the endless belt.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: October 1, 2013
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Shougo Sato, Susumu Sakuma
  • Patent number: 8543049
    Abstract: A cleaning apparatus is provided with a cleaning roller that is positioned so as to be in contact with a photosensitive drum, and with a toner layer thickness regulating member that regulates the thickness of a toner layer adhering to the surface of this cleaning roller. The toner layer thickness regulating member is formed by a toner layer thickness regulating roller that rotates in contact with the cleaning roller.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: September 24, 2013
    Assignee: Kyocera Document Solutions Inc.
    Inventors: Kiyotaka Kobayashi, Takahiko Murata, Ai Takagami, Yoshimi Shimizu, Mitsuhiro Goda, Susumu Hanano, Hirofumi Tsuji, Chisato Hatakeyama, Katsuya Ota
  • Patent number: 8538308
    Abstract: An image forming device includes a rotation member being held rotatably while making contact with an image carrier, a solid lubricant pressed so as to make contact with the rotation member, and a potential application unit for applying a potential to the rotation member, wherein the material of the solid lubricant and the material of the rotation member are selected so that the charged polarity of the solid lubricant charged due to the friction between the rotation member and the solid lubricant becomes identical with the charged polarity of toner, and the potential to be applied to the rotation member is set so as to be higher or lower than the surface potential of the neutralized image carrier so that the charges having the same polarity as the charged polarity of the solid lubricant are attracted from the rotation member to the neutralized image carrier.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: September 17, 2013
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Kuniaki Kashiwakura, Yoshiki Nakane, Ikuko Kanazawa
  • Patent number: 8498551
    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: January 29, 2013
    Date of Patent: July 30, 2013
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Shougo Sato, Susumu Sakuma
  • Patent number: 8472832
    Abstract: A multiple-output power supply unit includes: a transformer including: a primary winding; and a secondary winding which has a first node and a second node and which generates a secondary-side voltage at the secondary winding; first output terminal to output a first voltage corresponding to the secondary-side voltage; a first constant voltage element; a current limiting resistor; a second constant voltage element; a second output terminal to output a second voltage different from the first voltage; a current generation circuit provided between the first node and the ground so as to cause a predetermined current to flow between the first node and the ground; a transformer driver circuit connected to the primary winding so as to drive the transformer; and a secondary-side voltage control circuit that controls the transformer driver circuit so as to generate the secondary-side voltage having a predetermined value at the first node.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: June 25, 2013
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Katsumi Inukai
  • Patent number: 8449229
    Abstract: A method of making a slotted scavenger wherein a rigid sheet is used as a starting material. A slot is formed through the sheet having horizontally angled sidewalls such that an opening of the slot on a first major surface of the sheet is smaller than an opening of the slot in a second major surface of the sheet. Modifications of the method include using a rotating cutting tool for cutting through the sheet to form slots.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: May 28, 2013
    Assignee: Eastman Kodak Company
    Inventors: Kenneth J. Brown, Michael T. Dobbertin, Dennis J. Grabb
  • Patent number: 8437657
    Abstract: A cleaning apparatus including: a normally-charged toner cleaning member that receives a voltage having a polarity reverse to a normal charging polarity of a toner and electostatically removes a toner having the normal charging polarity on a cleaning target; a reversely-charged toner cleaning member that receives a voltage having the same polarity as the normal charging polarity of a toner and electrostatically removes a toner having a polarity reverse to the normal charging polarity on the cleaning target; and a pre-cleaning member that is disposed at an upstream side of the normally-charged toner cleaning member and the reverse-charged toner cleaning member in a surface moving direction of the cleaning target, receives a voltage having a polarity reverse to the normal charging polarity of the toner, and electrostatically removes a toner having the normal charging polarity on the cleaning target, is provided.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: May 7, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Hisashi Kikuchi, Kenji Sugiura, Osamu Naruse, Naomi Sugimoto, Yoshiki Hozumi, Yuu Sakakibara
  • Patent number: 8428481
    Abstract: According to aspects of the embodiments, there is provided an apparatus and method to manage the contact of a cleaning blade and a moving surface to increase the useful life of the blade. For example, a cleaning apparatus for a photoreceptor surface comprises a cleaning unit with a blade holder that rotates about a pivot point, a cleaning blade that is coupled to the blade holder and is positioned to chisel excess toner from the photoreceptor surface, and which cleans excess toner from the photoreceptor surface. The apparatus further comprises a sensor that senses the start and the end of an operational procedure, and an actuator that rotates the blade holder about the pivot point to selectively advance or retract the blade during the start-up procedure and the shut-down procedure. After the cleaning surface has begun to move or reached operating speed, blade contact is increased to bring the blade load up to operational level.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: April 23, 2013
    Inventors: Bruce Earl Thayer, Aaron Michael Burry, William C. Dean