Plural Diverse Patents (Class 399/349)
  • Patent number: 10653283
    Abstract: A self-propelled electronic device comprising: a housing; a drive wheel that enables the housing to travel; a wheel drop sensor that detects loss of contact of the drive wheel with a floor surface; and a travel control unit that controls travel of the housing, wherein, when the wheel drop sensor detects loss of contact of the drive wheel with the floor surface, the travel control unit continues travel of the housing for a predetermined continuous travel time, and if the wheel drop sensor still detects loss of contact of the drive wheel with the floor surface after the continuous travel time has elapsed, the travel control unit stops the rotation of the drive wheel, and then, rotates the drive wheel in a direction opposite to the direction of the rotation for a predetermined reverse travel time, to cause the housing to travel in a reverse direction.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: May 19, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masanori Tsuboi, Masashi Matsumoto, Toshihiro Senoo, Fumio Yoshimura
  • Patent number: 10571821
    Abstract: Provided is a means in which in a tandem type electrophotographic image forming apparatus, image deletion of a formed image is suppressed, passing through of a toner is suppressed, and the lifetime of an organic photoreceptor and the apparatus itself is prolonged. The invention relates to a tandem type electrophotographic image forming apparatus using an organic photoreceptor in which at least a charge generating layer and a charge transfer layer are sequentially laminated on a conductive support body, in which in at least one of combinations of two adjacent image forming units including toners having colors different from each other, a linear pressure P1 of a cleaning blade A included in the image forming unit disposed on an upstream side, and a linear pressure P2 of a cleaning unit blade B included in the image forming unit disposed on a downstream side, satisfy a predetermined relationship.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: February 25, 2020
    Assignee: KONICA MINOLTA, INC.
    Inventors: Daisuke Kodama, Keiichi Inagaki
  • Patent number: 10451988
    Abstract: A toner includes a plurality of toner particles each including a toner mother particle and an external additive adhering to a surface of the toner mother particle. The external additive includes hydrotalcite particles. The hydrotalcite particles have a number average primary particle diameter of at least 80 nm and no greater than 1,000 nm. The hydrotalcite particles have a volume resistivity of no greater than 1.0×105 ?·cm. An amount of the hydrotalcite particles is at least 0.5 parts by mass and no greater than 3.0 parts by mass relative to 100 parts by mass of the toner mother particles.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: October 22, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Akinori Koyama
  • Patent number: 10216112
    Abstract: An image forming apparatus includes a developing unit which develops a toner image on a surface of a photosensitive member and which collects toner which remains on the surface of the photosensitive member after the developed toner image is transferred to a transfer member. The image forming apparatus includes a controller configured to determine whether a cleaning operation of cleaning the surface of the photosensitive member is to be performed after an image forming operation is performed or control a period of time in which the cleaning operation is performed in accordance with a measured downtime of the image forming apparatus which is a period of time after the image forming operation is terminated and before a next image forming operation is started.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: February 26, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroki Sasame, Kohei Okayasu, Shinsuke Kobayashi, Takaaki Akamatsu, Kenji Shindo, Takehiko Suzuki, Hironori Kato
  • Patent number: 9910397
    Abstract: An image forming apparatus includes a rotatable image bearing drum; a toner image transfer device; a cleaning blade for cleaning the drum after transfer of the image; a rotatable furbrush provided downstream of the transfer device and upstream of the blade, the furbrush being rotatable counterdirectionally with respect to a peripheral movement of the drum; an executing portion for executing a first mode for forming an image on the transfer material on the basis of a signal inputted to the apparatus and a second mode for supplying a band of the toner to the blade; and a controller for controlling a peripheral speed difference between the drum and the furbrush, wherein the difference when the band of the toner passes the furbrush in the second mode is smaller than that when the toner on the drum after the image transfer passes the furbrush in the first mode.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: March 6, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuki Kamimori
  • Patent number: 9772583
    Abstract: A cleaning device includes a cleaning member, a collecting roller and a cleaning blade. The cleaning member is disposed to be rotatable while being in contact with a surface of an image carrier configured to carry a toner image to the surface. The collecting roller is disposed to be rotatable while being in contact with the cleaning member at a downstream side from the image carrier in a rotation direction of the cleaning member. The cleaning blade is disposed while being in contact with the collecting roller in a counter direction with respect to rotation of the collecting roller at a downstream side from the cleaning member in a rotation direction of the collecting roller. The collecting roller is formed so as to have larger surface roughness at an end than that at a central part in an axial direction.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: September 26, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Einosuke Kikuchi
  • Patent number: 9541888
    Abstract: An image forming apparatus includes: a cleaning portion configured to remove toner stuck to a surface of an image carrier; a polishing roller that is rotatable while being in contact with the image carrier; a guide portion disposed with a gap having a predetermined width from an outer circumferential surface of the polishing roller, and configured to guide the removed toner to pass below the outer circumferential surface of the polishing roller; opening portions each formed in a predetermined size at a position below the lower portion of the outer circumferential surface of the polishing roller in the guide portion; and a housing including a wall surface that defines, together with an end of the guide portion in a rotation direction of the polishing roller, a falling path through which the toner falls from the end, the housing storing the cleaning portion and the polishing roller.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: January 10, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Susumu Hanano
  • Patent number: 9261820
    Abstract: A cleaning device includes a cleaning portion, a polishing roller, a layer thickness restricting member, and a swaying portion. The cleaning portion removes toner that has adhered to a surface of a rotation body. The polishing roller polishes a surface of the rotation body by rotating in a state where a surface of the polishing roller is in contact with the surface of the rotation body and the toner removed by the cleaning portion has adhered to the surface of the polishing roller. The layer thickness restricting member restricts a layer thickness of the toner that has adhered to the surface of the polishing roller. The swaying portion includes a biasing portion, an undulating portion and a support portion, and causes the polishing roller to sway in an axis direction of the rotation body.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: February 16, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Kei Wakayama
  • Patent number: 9244387
    Abstract: A developer collecting device includes a suction duct, a collecting box, and a suction mechanism. The suction duct has one end adjacent to a development device and another end. The collecting box is connected to the other end and configured to suction and collect developer around the development device via the suction duct. The suction mechanism is disposed in the middle of the suction duct. The suction mechanism includes a suction port that is openable and closable. The suction mechanism is configured to suction the developer inside the suction duct from an outside of the suction duct.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: January 26, 2016
    Assignee: Kyocera Document Solutions Inc.
    Inventors: Kaori Harada, Shinsaku Yoneda
  • Patent number: 9229353
    Abstract: In test modes correcting at least one of an exposure timing of a first exposure portion and an exposure timing of a second exposure portion after transferring test toner images on an endless belt, a control portion is configured to be able to start the exposure of the first exposure portion after a position of an intermediate transfer belt, having been located at a developing position when a developing bias is started to be applied to the second developing portion, arrives at a transfer position.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: January 5, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuyuki Iwamoto
  • Patent number: 9195164
    Abstract: An image forming apparatus includes an image carrier which carries thereon a developer image, a holding roller which holds thereon developer attached on the image carrier, a collection device which collects the developer on the holding roller via at least the image carrier, and a control device which executes a holding control of applying to the holding roller a holding bias having a polarity opposite to the developer such that the holding roller holds developer and a collection control of applying to the holding roller a discharge bias having a polarity same as the developer such that the developer held on the holding roller is moved to the image carrier and the collection device collects the developer via the image carrier. The control device starts the collection control at a timing after a predetermined point of time according to an estimated charge amount of the developer.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: November 24, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Mayu Wakamatsu, Masatoshi Shiraki
  • Patent number: 9152120
    Abstract: Provided is a cleaning blade for cleaning a surface of an image holding member, including a contact member that contacts the surface of the image holding member at a corner portion of a tip end of the cleaning blade, wherein, when the position of the corner portion in a state where the image holding member is stopped is set to be a standard, a movement distance of the cleaning blade to the position of the corner portion in a state where the image holding member is driven is from 10 ?m to 30 ?m.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: October 6, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Yoshinori Takahashi
  • Patent number: 9031430
    Abstract: An image forming apparatus includes an image bearing member, an image forming device for forming a toner image on the image bearing member, a recording material, a transfer device for transferring the toner image from the image bearing member to the recording material, a transfer belt for carrying the recording material, a first cleaning member, a second cleaning member, and a voltage control device. When continuously forming toner images on sheets of the recording material, a detection toner image is formed on the image bearing member between images to be formed on sheets of the recording material. The first cleaning member cleans the image bearing member. The second cleaning member cleans the transfer belt. The voltage control device controls the voltage applied to the transfer device so that the number of operations to clean the detection toner image is higher for the second cleaning member than the first cleaning member.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: May 12, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroki Takayanagi
  • Publication number: 20150098726
    Abstract: A cleaning device includes a housing, a cleaning member, a cleaning blade, a collection member, a seal member, and a protection member. The housing is disposed above an image carrier, and an opening is formed in a face thereof facing the image carrier. The cleaning member rotates contacting a surface of the image carrier and the image carrier contact each other, and thereby, residual toner adhered to the image carrier is removed downstream of the image carrier in the rotation direction of the image carrier. The seal member is disposed at an upstream-side edge of the opening of the housing with respect to the rotation direction of the image carrier, and the seal member prevents leakage of waste toner through a gap between the housing and the image carrier. The protection member is disposed above the seal member with an interval therebetween, and the protection member contacts the cleaning member.
    Type: Application
    Filed: September 8, 2014
    Publication date: April 9, 2015
    Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Kiyotaka KOBAYASHI, Shingo SAKATO, Takuji WATANABE
  • Patent number: 8977183
    Abstract: A cleaning device includes a case, a rotating member, a sheet member, and a cover member. The rotating member includes a peripheral face which comes into contact with the cylindrical face of an image carrier, is rotatively driven in a same direction as the image carrier at a contact position, and recovers a toner which has attached on the image carrier. The sheet member extends toward a direction approaching a straight line that connects the rotating axis of the image carrier and the contact position of the rotating member, and includes a leading end which comes into contact with the cylindrical face. The cover member is provided in the case so as to cover an upside of the sheet member, extends toward the direction approaching the straight line, and reaches a position above the leading end of the sheet member.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: March 10, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Mitsuhiro Goda
  • Patent number: 8923744
    Abstract: A cleaning device includes: a cleaning rotating body 160; a scraping member 130; a toner restriction face 141; and a downstream side restriction portion 140. The cleaning rotating body 160 is arranged in sliding contact with the surface of the image carrying body 2. A front end portion 131 of the scraping member 130 is arranged in contact with or in proximity to a surface of the cleaning rotating body 160. The scraping member 130 is a plate-like member and includes a toner receiving face 133 to which the toner is carried from the front end portion 131. The toner restriction face 141 is arranged to be orthogonal to the toner receiving face 133. The downstream side restriction portion 140 restricts movement of the toner to a downstream side in a rotational direction of the cleaning rotating body 166.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: December 30, 2014
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Yoshimi Shimizu, Takahiko Murata, Ai Takagami
  • Publication number: 20140356041
    Abstract: A drum cleaning device includes a toner supply roller, a toner layer restricting member, and a toner receiving member. The toner layer restricting member includes an inclined portion formed in a lateral region outside of an image forming region to incline gradually away from a surface of a cleaning roller with increasing distance from an inner side of the lateral region. The toner receiving member includes a lower-level upper end portion provided in the lateral region outside of the image forming region, the lower-level upper end portion being located below a second contact region where the cleaning roller and the toner supply roller come into contact with each other. The inclined portion is disposed in a region overlapping the lower-level upper end portion.
    Type: Application
    Filed: May 15, 2014
    Publication date: December 4, 2014
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Katsuya Ota, Jun Nakai
  • Patent number: 8879941
    Abstract: A cleaning device and an image forming apparatus capable of suppressing staying of toner in a brush and reducing stress on a brush by discharge products are provided. A cleaning device includes upstream and downstream cleaning brushes and a cleaning roller, which respectively contact the surface of a secondary transfer belt, and first to third bias applying sections. The first bias applying section applies a bias voltage having a polarity opposite to that of the normal toner to the upstream cleaning brush. The second bias applying section applies a bias voltage having a polarity opposite to that of the normal toner and set to be not less than the absolute value of the bias voltage applied to the upstream cleaning brush, to the downstream cleaning brush. The third bias applying section applies a bias voltage having the same polarity as that of the normal toner to the cleaning roller.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: November 4, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Taichi Meguro
  • Patent number: 8862020
    Abstract: Brush rollers rotate in a direction indicated by an arrow while being in contact with an image formation surface to remove toner remaining on the image formation surface from an intermediate transfer belt. The brush rollers each mainly include a rotational shaft and a brush. The brush rollers face the intermediate transfer belt with brush winding directions being opposite from one another. The brush rollers rotate in the direction indicated by the arrow. Thus, seams of the brush rollers can be prevented from being in contact with the same portion on the image formation surface of the intermediate transfer belt.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: October 14, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Hidetoshi Noguchi, Kazuyoshi Hara, Takahiro Kuroda, Satoru Shibuya
  • Publication number: 20140233997
    Abstract: A cleaning unit, which is included in a process cartridge or an image forming apparatus, includes a brush rotary body to remove toner, a toner collecting rotary body to collect the toner, a toner collecting blade to scrape the toner, and a cleaning blade to scrape the toner falling from the brush rotary body. The image carrier, the brush rotary body, and the toner collecting rotary body rotate in the same direction. The cleaning blade, the brush rotary body, and the toner collecting rotary body are located to cause a tangential line passing through a contact area of the brush rotary body and the toner collecting rotary body on an outer peripheral circle around a shaft of the brush rotary body to have an intersection point intersecting a non-contact surface of the cleaning blade disposed opposite to a contact portion of the cleaning blade with the image carrier.
    Type: Application
    Filed: January 30, 2014
    Publication date: August 21, 2014
    Inventors: Akira ASAOKA, Hirotaka HATTA, Toshiya SATO, Takeshi KOJIMA, Hiroyuki UENISHI, Yusuke ISHIZUKA
  • Patent number: 8811881
    Abstract: A cleaning device, including, a first blade to slidably contact with a surface of an image carrier to which a toner including an external additive adheres, a second blade to slidably contact with the surface of the image carrier and to be provided downstream of the first blade in a rotation direction of the image carrier, and a lubricant applying mechanism section to apply a lubricant to the surface of the image carrier, wherein hardness of the first blade is equal to or more than hardness of the second blade.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: August 19, 2014
    Assignee: Konica Minolta, Inc.
    Inventor: Satoshi Nishida
  • Patent number: 8805240
    Abstract: There is provided a cleaning device for removing residual toner on an image carrier. The cleaning device includes a housing to cover a specified region of an image carrier. A first cleaning section and a second cleaning section are respectively placed in upper and lower parts of the housing partitioned by a partition member. The first cleaning section includes a first cleaning brush and a first regulating member. The second cleaning section includes a second cleaning brush and a second regulating member. The partition member substantially extends in a continuous manner with respect to a horizontal direction from the specified region to at least a position equivalent to an end portion on a housing sidewall side of the first or the second regulating member. A clearance exists between the housing sidewall and an end portion on the housing sidewall side of the partition member.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: August 12, 2014
    Assignee: Konica Minolta, Inc.
    Inventors: Katsumi Shirai, Hideji Higashimura, Morihisa Kawahara, Takumi Michibata
  • 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: 8792815
    Abstract: A cleaning device includes: a collection member configured to contact a photosensitive member, on which an electrostatic latent image is configured to be formed, and collect foreign substances on the photosensitive member; a shaft configured to attract the foreign substances from the collection member so as to make the foreign substances cling thereto; a scraping member configured to contact the shaft and scrape the foreign substances cling on the shaft; and a housing configured to accommodate the collection member and the shaft, wherein the scraping member is mounted to the housing. The scraping member includes: an elastic member; and a fiber member configured to be adhered to the elastic member and slidingly contact the shaft. The elastic member is configured to press the shaft to such an extent that fibers of the fiber member are pressed and compressed.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: July 29, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Kenta Tosuji
  • Patent number: 8761654
    Abstract: A cleaning device to remove untransferred toner from a surface of an image carrier rotatable in a predetermined direction. The cleaning device includes a lubricant supply roller contacting the surface of the image carrier to supply a lubricant carried thereon to the surface of the image carrier, a first blade provided upstream from the lubricant supply roller in the direction of rotation of the image carrier, and a second blade provided downstream from the lubricant supply roller. The first blade contacts the surface of the image carrier to level the untransferred toner attaching to the surface of the image carrier to a thin layer. The second blade contacts the surface of the image carrier to level the lubricant supplied to the surface of the image carrier by the lubricant supply roller to a thin layer and to remove the untransferred toner from the surface of the image carrier.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: June 24, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinichi Kawahara, Nobuo Kuwabara, Takeshi Shintani, Akio Kosuge, Daisuke Tomita
  • Publication number: 20140147181
    Abstract: A belt device incorporatable in an image forming apparatus includes an endless belt, multiple belt tension rollers disposed in contact with an inner surface of the endless belt, a rotary cleaning member to contact a belt wound area of the endless belt facing an opposing roller to form a cleaning nip between the rotary cleaning member and the endless belt and rotate the rotary cleaning member in a direction opposite the belt moving direction within the cleaning nip, and a voltage applier. The cleaning nip is formed by offsetting a center of the cleaning nip upstream from a center of the belt wound area of the endless belt in the belt moving direction and by at least contacting the rotary cleaning member in a range from the belt wound area to a tensioned belt area located upstream from the belt wound area in the belt moving direction.
    Type: Application
    Filed: January 30, 2014
    Publication date: May 29, 2014
    Inventors: Kenji SUGIURA, Osamu Naruse, Naomi Sugimoto, Hisashi Kikuchi, Yoshiki Hozumi
  • 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
  • Publication number: 20140093295
    Abstract: A cleaning device includes a brush to contact a photoconductive member, a roller to contact the brush, and a blade. The blade is located along the roller in a longitudinal direction. The blade has a first portion, a second portion, and a bent portion between the first portion and the second portion. A contact surface or edge of the first portion contacts a surface of the roller to remove toner therefrom.
    Type: Application
    Filed: August 23, 2013
    Publication date: April 3, 2014
    Inventors: Takeshi KOJIMA, Hirotaka HATTA, Toshiya SATOH, Akira ASAOKA
  • Patent number: 8688009
    Abstract: There is described an applicator for use in an image forming apparatus. The applicator includes an applicator comprising an elastomeric matrix and a functional material dispersed therein. The applicator includes an actuator for moving the applicator between a first position having the applicator in contact with a surface, and a second position. The actuator moves the applicator from the first position to the second position at a frequency of from about 10?5 Hz to about 10 kHz wherein the functional material diffuses from the elastomeric matrix to the surface.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: April 1, 2014
    Assignee: Xerox Corporation
    Inventors: Yu Liu, Johann Junginger, Gaetano J. Lavigne, Sarah J. Vella, Vladislav Skorokhod, Nan-Xing Hu, Gregory M. McGuire
  • Patent number: 8688024
    Abstract: A cleaning device of an image forming apparatus includes: a magnetic brush roller rubbing a surface of a photosensitive drum by a magnetic brush formed of a toner and carriers; a cleaning blade removing the toner remaining on a photosensitive drum; a toner concentration initialization control part, in order that toner-to-carrier ratio T/C of the magnetic brush formed on the magnetic brush roller falls within a predetermined range, controlling bias applied to the magnetic brush roller and an amount of the toner supplied from a developing device to the photosensitive drum.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: April 1, 2014
    Assignee: Kyocera Document Solutions Inc.
    Inventors: Kouichi Hayashi, Shigeki Tsukahara
  • Patent number: 8676109
    Abstract: A cleaning apparatus includes a cleaning blade configured to abut with a surface of the image carrier member, and to remove residual toner from the surface of the image carrier member; a cleaning roller rotatably configured to attach residual toner removed by the cleaning blade to the surface and make abrasive contact with the surface of the image carrier member; a toner layer regulating member configured to regulate residual toner attached to the cleaning roller to a predetermined toner layer thickness and scrape and remove excess residual toner; a frame member configured to store residual toner scraped and removed from the cleaning roller; and a toner supply member configured to make contact with the cleaning roller to attach residual toner stored in the frame member to the surface, and to attach residual toner attached to the surface to the cleaning roller.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: March 18, 2014
    Assignee: Kyocera Document Solutions Inc.
    Inventor: Kei Wakayama
  • Publication number: 20140056609
    Abstract: A cleaning device includes first and second cleaning members and a moving member. The first cleaning member contacts a surface of a rotating member, which is in contact with an image carrier, to clean the rotating member by removing substances attached thereto. The moving member supports the first cleaning member in a movable manner. The second cleaning member is disposed downstream of the first cleaning member in a rotation direction in which the rotating member rotates and contacts the surface of the rotating member to clean the rotating member by removing the substances. The second cleaning member removes the substances that remain on the surface of the rotating member after the first cleaning member has been separated from the rotating member so that the substances are removed before a part of the surface of the rotating member on which the substances remain comes into contact with the image carrier.
    Type: Application
    Filed: January 18, 2013
    Publication date: February 27, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Koichi SATO, Kazuyoshi HAGIWARA, Kazutoshi SUGITANI, Kuniaki TANAKA, Yuji KAMIKAWA, Koji DEGUCHI, Yusuke SAKAI, Kaoru MATSUSHITA
  • Publication number: 20130336694
    Abstract: A cleaning device includes a rotary member, a sheet member, and a toner conveying member. The rotary member is held in contact with a cylindrical surface of an image carrier above a rotation axis of the image carrier. The sheet member is in contact at a distal end thereof with the cylindrical surface of the image carrier above the rotation axis of the image carrier and upstream of a contact position of the rotary member with the cylindrical surface of the image carrier in a direction of rotation of the image carrier. The toner conveying member is disposed above the sheet member and facing the peripheral surface of the rotary member.
    Type: Application
    Filed: June 10, 2013
    Publication date: December 19, 2013
    Inventors: Masaki KADOTA, Shigeki TSUKAHARA, Koichi HAYASHI
  • Patent number: 8611793
    Abstract: Apparatus for electrically reconditioning a rotatable photoreceptor in an electrophotographic (EP) printer includes a charger, an exposure subsystem, a transfer station, and an erase lamp arranged in that order around the photoreceptor in the direction of rotation thereof. A first corona electrode is disposed within 3 cm of the surface of the photoreceptor, but not in contact therewith, between the transfer station and the erase lamp. The transfer station and the erase lamp are at most 1 cm apart. A second corona electrode is disposed within 3 cm of the surface of the photoreceptor, but not in contact therewith, after the erase lamp in the direction of rotation of the photoreceptor. The erase lamp and the second corona electrode are less than 1 cm apart.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: December 17, 2013
    Assignee: Eastman Kodak Company
    Inventors: Mark Cameron Zaretsky, David Steven Weiss
  • Patent number: 8606148
    Abstract: An electrophotographic photoreceptor is prepared for charging. Corona electrodes before and after the erase lamp apply respective biases to provide the correct sign of charge for cleaning, and to discharged trapped charges in the photoreceptor. Toner is then cleaned off the photoreceptor. This leaves the photoreceptor electrically and mechanically reconditioned and ready for its next printing cycle.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: December 10, 2013
    Assignee: Eastman Kodak Company
    Inventors: Mark Cameron Zaretsky, David Steven Weiss
  • Patent number: 8548350
    Abstract: There is provided a pre-cleaning brush roller being a pre-cleaning member which is disposed on an upstream of a normally-charged-toner cleaning brush roller and an oppositely-charged-toner cleaning brush roller in a surface moving direction of an intermediate transfer belt, is applied with a voltage having a polarity opposite to a normal charge polarity of toner, and electrostatically removes the toner having the normal charge polarity.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: October 1, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Yoshiki Hozumi, Kenji Sugiura, Osamu Naruse, Naomi Sugimoto, Hisashi Kikuchi, Yuu Sakakibara
  • Patent number: 8526855
    Abstract: An image forming apparatus includes: an image carrier; an exposure device; a developing device that develops the latent image on the image carrier by using a toner charged to a predetermined polarity and having an external additive; a transfer device that transfers a toner image developed on the image carrier to a transfer medium; a first charging member that charges the external additive and the transfer residual toner remaining on the image carrier and the image carrier after transfer to the same polarity as a polarity of the toner; a cleaning member that electrostatically attracts the external additive and the transfer residual toner charged by the first charging member; and a second charging member that charges the image carrier to an electric potential smaller in absolute value than an electric potential of the image carrier generated after the image carrier passes the cleaning member.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: September 3, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Masaru Kobashi, Yoichi Yamada, Koji Migita, Takatomo Fukumoto
  • Publication number: 20130223904
    Abstract: A cleaning device includes a case, a rotating member, a sheet member, and a cover member. The rotating member includes a peripheral face which comes into contact with the cylindrical face of an image carrier, is rotatively driven in a same direction as the image carrier at a contact position, and recovers a toner which has attached on the image carrier. The sheet member extends toward a direction approaching a straight line that connects the rotating axis of the image carrier and the contact position of the rotating member, and includes a leading end which comes into contact with the cylindrical face. The cover member is provided in the case so as to cover an upside of the sheet member, extends toward the direction approaching the straight line, and reaches a position above the leading end of the sheet member.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 29, 2013
    Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: KYOCERA DOCUMENT SOLUTIONS INC.
  • Publication number: 20130195528
    Abstract: Brush rollers rotate in a direction indicated by an arrow while being in contact with an image formation surface to remove toner remaining on the image formation surface from an intermediate transfer belt. The brush rollers each mainly include a rotational shaft and a brush. The brush rollers face the intermediate transfer belt with brush winding directions being opposite from one another. The brush rollers rotate in the direction indicated by the arrow. Thus, seams of the brush rollers can be prevented from being in contact with the same portion on the image formation surface of the intermediate transfer belt.
    Type: Application
    Filed: January 24, 2013
    Publication date: August 1, 2013
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Hidetoshi NOGUCHI, Kazuyoshi Hara, Takahiro Kuroda, Satoru Shibuya
  • Publication number: 20130189009
    Abstract: A cleaning device includes: a cleaning rotating body 160; a scraping member 130; a toner restriction face 141; and a downstream side restriction portion 140. The cleaning rotating body 160 is arranged in sliding contact with the surface of the image carrying body 2. A front end portion 131 of the scraping member 130 is arranged in contact with or in proximity to a surface of the cleaning rotating body 160. The scraping member 130 is a plate-like member and includes a toner receiving face 133 to which the toner is carried from the front end portion 131. The toner restriction face 141 is arranged to be orthogonal to the toner receiving face 133. The downstream side restriction portion 140 restricts movement of the toner to a downstream side in a rotational direction of the cleaning rotating body 166.
    Type: Application
    Filed: January 17, 2013
    Publication date: July 25, 2013
    Applicant: Kyocera Document Solutions Inc.
    Inventor: Kyocera Document Solutions Inc.
  • Patent number: 8463172
    Abstract: A cleaning device, including, a first blade to slidably contact with a surface of an image carrier to which a toner including an external additive adheres, a second blade to slidably contact with the surface of the image carrier and to be provided downstream of the first blade in a rotation direction of the image carrier, and a lubricant applying mechanism section to apply a lubricant to the surface of the image carrier, wherein hardness of the first blade is equal to or more than hardness of the second blade.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: June 11, 2013
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Satoshi Nishida
  • Patent number: 8369767
    Abstract: An electrophotographic printer includes a transfer roller cleaning device 12 and a carrier liquid supply unit 11 disposed at a portion of the circumference of a transfer roller 2 between a position of image transfer onto a recording medium 7 and the transfer roller cleaning device and including a carrier liquid supply roll 13 in rotational contact with a surface of the transfer roller. The transfer roller cleaning device comprises a cleaning roll 17 rotating in rubbing contact with the surface of the transfer roller and having a bias voltage applied thereto which is of a polarity opposite to that of a residual toner; a peripheral surface scraping blade 18 positioned downstream of the cleaning roll in the rotation direction of the transfer roller; a side surface scraping blade 19 likewise positioned downward; and a surface scraping blade 26 disposed at a portion of the circumference of the cleaning roll.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: February 5, 2013
    Assignee: Miyakoshi Printing Machinery Co., Ltd.
    Inventors: Hideo Izawa, Takao Namiki, Junichi Setoyama, Kouichi Ooyama
  • Patent number: 8355664
    Abstract: A cleaning device for a photosensitive drum includes a cleaning roller, a cleaning blade, and a layer control member. The layer control member may include an upstream scraper having a surface that surface contacts the cleaning roller in a substantially same direction as a rotation direction of the cleaning roller. In addition, the layer control member may include a downstream scraper having an edge that contacts the cleaning roller. The downstream scraper may be positioned downstream of the contact position between the cleaning roller and the upstream scraper in the rotation direction of the cleaning roller. In some embodiments, the downstream scraper edge may line contact the cleaning roller in a direction opposing the rotation direction of the cleaning roller.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: January 15, 2013
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Takashi Eiki
  • Patent number: 8346119
    Abstract: A cleaning device includes: a brush that has numerous bristles rotating and contacting to the surface of an image carrier, a removing member disposed so as to contact to the numerous bristles and removes a developer adhering to the numerous bristles by elastically deforming the numerous bristles and further returning the numerous deformed bristles back to normal, and a transport member disposed lower than the removing member in the gravitational direction and transports the developer removed with the removing member by rotating on an axis, wherein at least a part of the developer removed from the numerous bristles falls to a farther position than the axis of the transport member from the brush in the horizontal direction.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: January 1, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takatoshi Ishikawa, Takashi Kawabata, Osamu Handa, Atsuhito Tokuyama, Tsutomu Komiyama
  • Patent number: 8340561
    Abstract: In a cleaning arrangement for a moving element to be cleaned in an electrographic printing apparatus, a cleaning element is provided that has a cleaning member for cleaning which rests on a surface of the moving element to be cleaned. A drive unit for the cleaning element is provided that actuates the cleaning element such that the cleaning member cleans the surface of the moving element to be cleaned region-by-region.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: December 25, 2012
    Assignee: Océ Printing Systems GmbH
    Inventor: Walter Kopp
  • Patent number: 8335463
    Abstract: A cleaning device including a first blade contacting a surface of an image carrier and a second blade separate from the first blade to contact the surface of the image carrier at a position downstream from the first blade in a direction of rotation of the image carrier relative to a transfer position on the surface of the image carrier. A leading end of the second blade facing up is positioned upstream from a trailing end of the second blade relative to the direction of rotation of the image carrier. A first edge of the leading end of the second blade contacts the surface of the image carrier at a point on the surface of the image carrier below a second edge of the leading end of the second blade.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: December 18, 2012
    Assignee: Ricoh Company, Ltd.
    Inventor: Akira Fujimori
  • Patent number: 8295756
    Abstract: The image forming apparatus has a plurality of image forming units for forming a developer image on a recording medium, and a fixing device for fixing the developer image to the recording medium. Each of said image forming units has an image bearing body that bears the developer image, and a cleaning portion that removes residual developer from said image bearing body. Said cleaning portion of said image forming unit is disposed closest to said fixing device and includes a cleaning blade that has repulsion elasticity at a predetermined temperature, and said repulsion elasticity is lower than that of a cleaning blade of said cleaning portion of at least one of said image forming units disposed farther from said fixing device.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: October 23, 2012
    Assignee: Oki Data Corporation
    Inventor: Arihiro Tsunoda
  • Patent number: 8280294
    Abstract: A cleaning device includes a rotary member that contacts with an image carrier and moves materials on a surface of the image carrier along a rotation direction of the rotary member; a scraping member that contacts with the rotary member to scrape the materials adhering on the rotary member; a collected material receiving portion disposed downstream of a contact portion of the rotary member and the scraping member in a gravity direction; plural openings provided along a width direction of the image carrier by a partition member, through which the materials scraped by the scraping member pass to the collected material receiving portion; a protrusion portion that is arranged between the openings and the contact portion of the rotary member and the scraping member, and protrudes toward an upstream side in a rotation direction of the rotary member.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: October 2, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Kuniaki Tanaka
  • Patent number: 8270868
    Abstract: According to one embodiment, a method for cleaning including, scraping off, agitating, or capturing, in non-contact with a belt surface, a visualizing material present on the belt surface and fiber or powder different from the visualizing material, coming into contact with the belt surface and scraping off, agitating, or capturing the visualizing material present on the belt surface and the fiber or the powder different from the visualizing material, and being located in contact with the belt surface at predetermined pressure and scraping off the visualizing material present on the belt surface and the fiber or powder different from the visualizing material.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: September 18, 2012
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventor: Yoshihiko Sugiyama
  • Patent number: 8254820
    Abstract: A cleaning device may include a polishing roller, an ejection member, and a conveying member. In some embodiments, the polishing roller may be configured to remove and collect a residual substance adhering to a surface of an image bearing member while rotating in contact with the image bearing member. In an embodiment, the ejection member may be configured to eject the substance collected by the polishing roller to the outside of the cleaning device. An embodiment may include a conveying member configured to follow the rotation of the polishing roller by being in contact with the polishing roller and to convey toner in the cleaning device on a surface of the polishing roller in an axial direction of the polishing roller. When an image is not formed, the polishing roller rotates in a direction opposite a rotating direction in which the polishing roller rotates when an image is formed.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: August 28, 2012
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Susumu Hanano