By Heat And Pressure Patents (Class 399/328)
  • Patent number: 11226575
    Abstract: An imaging system includes a heating device, a conveyor belt including a surface layer located on an outer surface of the heating device to receive a printing medium, and a cooling device to cool the surface layer after the conveyor belt passes along the outer surface of the heating device. The surface layer includes a temperature sensitive material to vary an adhesive force of the conveyor belt with respect to the printing medium in response to a change in temperature of the surface layer. The adhesive force increases in response to an increase in temperature of the surface layer.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: January 18, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Satoshi Ohwada
  • Patent number: 11194273
    Abstract: In a fixing device according to the disclosure, a first surface of a restriction member is inclined so that, as the first surface goes further away from a nip portion, the first surface inclines toward a direction coming closer to an edge surface of the film, and the first surface is inclined so that, as the first surface comes downstream in the conveying direction, the first surface inclines toward a direction going further away from the edge surface of the film. A second surface is inclined so that, as the second surface comes closer to a center in the rotational axis direction of the film, the second surface inclines toward a direction coming closer to a roller, and inclines in a direction going downstream in the conveying direction.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: December 7, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hikaru Osada, Toru Imaizumi
  • Patent number: 11106164
    Abstract: A heating device includes a cylindrical film configured to be rotated about an axis, a heater including a substrate that extends along a longitudinal direction parallel to the axis, and a heater element on the substrate and facing an inner surface of the cylindrical film. A heat conductor extends along the longitudinal direction and has first and second surfaces. A first portion of the heat conductor contacts the substrate and a second portion of the heat conductor has a groove in the first surface. A temperature sensing element is disposed at a position on the second surface at a position opposite the groove.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: August 31, 2021
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Kazuhiko Kikuchi, Sasuke Endo, Masaya Tanaka, Ryota Saeki, Kiyotaka Murakami, Kousei Miyashita, Ryosuke Kojima, Yohei Doi, Yuki Kawashima, Eiji Shinohara
  • Patent number: 11106171
    Abstract: An image forming apparatus for forming an image on a recording material. The image forming apparatus includes an image forming portion, a fixing portion, an oblique movement detecting portion, and a controller. The image forming portion is configured to form the image on the recording material. The fixing portion includes a flexible cylindrical rotatable member and a roller in press contact with the rotatable member. The rotatable member and the roller are configured to form a fixing nip, in which the recording material, on which the image is formed, is nipped and fed. The oblique movement detecting portion is configured to detect oblique movement of the recording material. When the oblique movement detecting portion detects the oblique movement of the recording material, the controller increases a feeding interval of the recording material to the image forming portion.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: August 31, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toru Imaizumi, Hikaru Osada
  • Patent number: 11054777
    Abstract: Provided is a fixing device that makes it difficult for a sheet to adhere to a heating unit when the sheet is caught in a gap between the heating unit and a fixing member, and an image forming apparatus that includes the fixing device. The fixing device includes a fixing belt, a pressure roller, an IH heater, and convex portions. The fixing belt is rotatable. The pressure roller forms a pressure region in which the sheet is held and conveyed between the pressure roller and the fixing belt. The IH heater is such that the surface facing the outer peripheral surface of the fixing belt is formed in a shape along the outer peripheral surface, and the IH heater heats the fixing belt. The convex portions are formed on the surface of the IH heater facing the outer peripheral surface of the fixing belt.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: July 6, 2021
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Eiji Nakajima
  • Patent number: 11048194
    Abstract: A fixing device includes a contact portion contacting a recording material transported; a heat source heating the contact portion and including a heat generator extending in a width direction intersecting a transport direction in which the recording material is transported, and a support portion supporting the heat generator, the heat source having a counter surface facing the contact portion, and an opposite surface; a high-thermal-conductivity portion is provided on the opposite surface of the heat source and extends in the width direction such that a part of the high-thermal-conductivity portion overlaps the heat generator of the heat source, the high-thermal-conductivity portion having a higher thermal conductivity than the support portion or the contact portion. A length of an area of overlap between the high-thermal-conductivity portion and the heat generator of the heat source in the transport direction is shorter in a width-direction central portion than in two width-direction end portions.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: June 29, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Kazuyoshi Itoh, Kiyoshi Koyanagi, Takaaki Sato
  • Patent number: 11036168
    Abstract: An image forming method for an image forming apparatus having a fixing rotator and a pressure rotator opposite the fixing rotator includes transferring white toner and color toner onto a surface of a metallic sheet. The metallic sheet has a thermal conductivity of 0.34 W/m·K or less as measured by hot-wire method. The transferring process forms an unfixed color toner layer layered on an unfixed white toner layer on the metallic sheet. Further, the method includes conveying the metallic sheet, with the surface on which the white toner layer and the color toner layer being transferred facing the fixing rotator, between the fixing rotator heated and the pressure rotator to fix the white toner layer and the color toner layer onto the metallic sheet.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: June 15, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Kabata, Megumi Arai, Akira Azami, Toshiaki Motohashi
  • Patent number: 10996597
    Abstract: A pair of pressure members are disposed at both ends of a pressure roller and rotatably support the pressure roller to press the pressure roller against a fixing roller including an elastic layer via a fixing belt. One of the pressure members that includes a fulcrum engaging section engaged with a rotation fulcrum at one end and is locked to a biasing member at a side opposite to the fulcrum engaging section is moved by a moving member in a direction intersecting a pressing direction of the pressure roller in a state where deformation of the elastic layer is regulated. Thus, a force acting on a fixing nip formed by the deformation of the elastic layer of the fixing roller is stabilized. As a result, the traveling performance of the fixing belt is stabilized, whereby the offset control can be performed with high accuracy.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: May 4, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Kimihide Tsukamoto
  • Patent number: 10983464
    Abstract: A plurality of electric conductors provided on a substrate of a heater of an image heating device has a conductor group A including a plurality of first electric conductors and a conductor group B including a plurality of second electric conductors. The plurality of first electric conductors each have a first portion having a width W1 and a second portion having a width W2 smaller than the width W1, are provided on the substrate to be arranged side by side in a width direction. The plurality of second electric conductors each have a width W3 larger than the width W2, are provided on the substrate to be arranged side by side in a width direction so as to partially overlap the second portion.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: April 20, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yusuke Nakashima, Teruhiko Namiki, Takao Kawazu, Ryota Ogura
  • Patent number: 10983461
    Abstract: The present invention provides an image heating apparatus including an acquiring portion which acquires thickness information of a recording material, and a control portion controls a power to be supplied to a heating element which heats a region where the recording material does not pass through among a plurality of heating regions based on a control target temperature which is set based on the thickness information.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: April 20, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Munehito Kurata
  • Patent number: 10901353
    Abstract: A fuser has a heater, a heat roller, an endless belt, a pressure pad, and a slidable sheet. The pressure pad forms a nipping portion to nip the endless belt between the pressure pad and the heat roller. The slidable sheet is interposed between an inner circumferential surface of the endless belt and the pressure pad in the nipping portion. The slidable sheet includes a plurality of dents and a plurality of projections on a surface contacting the inner circumferential surface of the endless belt. The plurality of dents are arranged in a first part of the surface of the slidable sheet. The first part is located in a range corresponding to the nipping portion. The plurality of projections are arranged in a second part of the surface of the slidable sheet. The second part is located in a range corresponding to a portion different from the nipping portion.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: January 26, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Tokifumi Tanaka, Hideki Kanada
  • Patent number: 10901348
    Abstract: A fuser assembly includes a heated member and backup member forming a fusing nip. Nip loading springs on either ends of the fusing nip bias into contact the backup member and the heated member. Bellcranks contact the nip loading springs. Rotatable latches on either ends of the fusing nip act on the bellcranks to compress or relax the nip loading springs to open or close the fusing nip at respective distal or proximate ends of the fuser assembly. The rotatable latches are acted upon by corresponding latches of an access door of an imaging device that when opened provides access to the fuser assembly in an interior of the imaging device. The rotatable latches are independently movable. They can reside in different positions, yet allow closing the door of the imaging device.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: January 26, 2021
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Jeffery James Buchanan, Peter Alden Bayerle
  • Patent number: 10895834
    Abstract: A fixing device that includes a rotatable endless fixing member, a fixing heat source which heats the fixing member, a pressure member provided on the outside of the fixing member and facing the fixing member, a nip forming member provided inside the fixing member and forming a fixing nip between the fixing member and the pressure member, a nip forming support member for supporting the nip forming member, a high-thermal-conductive member provided between the fixing member and the nip forming member, an adhesive provided between the high-thermal-conductive member and the nip forming member. The thermal conductivity of the adhesive is larger than the thermal conductivity of the nip forming member and lower than the thermal conductivity of the high-thermal-conductive member.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: January 19, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryohei Matsuda, Hiroyuki Shimada
  • Patent number: 10877414
    Abstract: An image forming apparatus including an image forming portion, a fixing device, a pressure switching mechanism, and a controller. The fixing device includes a fixing member, a heating portion, and a pressing member. The pressure switching mechanism is configured to switch pressure between the fixing member and the pressing member. The controller is configured to execute an operation in an image forming mode in which the image is capable of being formed on an envelope. The controller is configured to cause the pressure switching mechanism to switch the pressure to a first pressure when an instruction to form the image on an address side of the envelope is inputted and to cause the pressure switching mechanism to switch the pressure to a second pressure when an instruction to form the image on a non-address side of the envelope is inputted. The second pressure is higher than the first pressure.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: December 29, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Rikiya Takemasa
  • Patent number: 10870291
    Abstract: In one example, a partially dried inkjet media conditioner can include: a print engine that encases a print zone within a housing, and a media path to provide partially dried inkjet media from the print zone to a conditioner within the print engine, wherein the conditioner comprises a heated pressure roller.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: December 22, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Steve O Rasmussen, Kevin Lo, Richard Lee Brinkly, Mark H MacKenzie
  • Patent number: 10866550
    Abstract: A fixing device includes a fixing belt, a pressure roller, a reserving portion, and a heater. The pressure roller is provided in contact with an outer peripheral surface of the fixing belt. The reserving portion is provided inside the fixing belt and configured to reserve a lubricant. The heater is provided between the reserving portion and the fixing belt in such a way as to be pressed against the fixing belt, wherein a moving path is formed in the heater such that the lubricant moves from the reserving portion toward the pressure roller in the moving path.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: December 15, 2020
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Kotatsu Kawaguchi, Rina Kikugawa
  • Patent number: 10838337
    Abstract: A fixing device includes a fixing rotator, a pressure rotator, a gear, and a sleeve. The pressure rotator is configured to contact the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator. The gear is disposed on an axial end side of the pressure rotator to transmit a driving force. The sleeve extends from the gear in an axial direction of the pressure rotator.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: November 17, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventor: Yukio Kazama
  • Patent number: 10841440
    Abstract: An image reading apparatus includes a supply tray which support sheets and includes a movable plate configured to move in correspondence to reduction in a number of the sheets supported on the supply tray, a discharge tray which is located below the supply tray and supports discharged sheets, a conveyance guide which guides a sheet conveyed from the supply tray toward the discharge tray, a reading sensor which reads an image on the sheet conveyed along the conveyance guide, and a discharge unit having a discharge opening for discharging the sheet to the discharge tray and moves from a third position to a fourth position in correspondence to reduction in the number of the sheets supported on the supply tray. A first timing for which the movable plate is to move and a second timing for which the discharge unit is to move are different.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: November 17, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Atsushi Miwa
  • Patent number: 10824100
    Abstract: In a fixing device according to the disclosure, a first surface of a restriction member is inclined so that, as the first surface goes further away from a nip portion, the first surface inclines toward a direction coming closer to an edge surface of the film, and the first surface is inclined so that, as the first surface comes downstream in the conveying direction, the first surface inclines toward a direction going further away from the edge surface of the film. A second surface is inclined so that, as the second surface comes closer to a center in the rotational axis direction of the film, the second surface inclines toward a direction coming closer to a roller, and inclines in a direction going downstream in the conveying direction.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: November 3, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hikaru Osada, Toru Imaizumi
  • Patent number: 10816921
    Abstract: A fixing apparatus includes a heating section including a belt having a layered structure in which a metal layer is held between nonmetal layers. The belt has a front surface that comes into contact with a toner image and a back surface that does not come into contact with the toner image. The belt has a first thickness from the front surface to the metal layer inside the belt and a second thickness from the back surface to the metal layer inside the belt. The fixing apparatus also includes a pressure section that holds, between the pressure section and the belt, a transported sheet of paper holding the toner image and that applies pressure to the sheet of paper. The fixing apparatus further includes a first static eliminating section that eliminates static from the belt while being in contact with a surface of the belt.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: October 27, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Tsuyoshi Sunohara, Nobuyoshi Komatsu, Yuichiro Saito, Yasunori Fujimoto
  • Patent number: 10802430
    Abstract: An image heating apparatus includes a first rotary member, a second rotary member a retaining portion, and a regulating portion. An end portion of the first rotary member abuts against the regulating portion and the regulating portion regulates movement of the first rotary member to the sheet width direction. The regulating portion comprises a curved surface shape having a radius of curvature of 10 mm or greater and 500 mm or smaller and protruding toward the first rotary member. An apex portion of the curved surface shape is, when viewed in the sheet width direction, positioned in an area outside of the retaining portion and on a side of the first rotary member from a tangent of the first rotary member at the nip portion. The apex portion is positioned in an area upstream in the sheet conveyance direction of a straight line that is orthogonal to the tangent.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: October 13, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuharu Toratani, Toru Katsumi, Nobuaki Hara, Kengo Koyama, Ayano Ogata, Masanobu Tanaka
  • Patent number: 10795294
    Abstract: A fixing apparatus includes an endless belt, a heating member configured to heat the belt, a detection unit configured to detect temperature of the heating member, a signal line connected to the detection unit, a holding member configured to hold the temperature detecting member, and an urging member configured to urge the temperature detecting member toward the heating member. The holding member includes a through hole for leading out the signal line and a contact portion being in contact with the signal line at a position located, in a width direction of the belt, between the through hole and the temperature detecting member and located, in an urging direction of the urging member, at a same position with a connecting portion between the signal line and the temperature detecting member or at a position closer to the heating member than the connecting portion.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: October 6, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tomoaki Tanto
  • Patent number: 10768561
    Abstract: A fixing device includes a cylindrical rotatable fixing belt, a flat heater, a safety device, a heater holding part and a pressuring member. The flat heater has a plurality of heat generating parts. The safety device is arranged across two adjacent heat generating parts to interrupt power supply to the heat generating parts in a case where temperature reaches a threshold value. The heater holding part holds the flat heater so that the flat heater comes into contact with an inner circumference face of the fixing belt. The pressuring member sandwiches the fixing belt with the flat heater to form a pressuring area for sandwiching and conveying a sheet between the fixing belt and the pressuring roller.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: September 8, 2020
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Takashi Eiki, Hiroki Kawasaki, Atsushi Kohama, Yuhiro Sakai
  • Patent number: 10725408
    Abstract: A fixing device fixing a toner image onto a recording sheet passing through a nip, the fixing device including: a pressure structure and a heating structure forming the nip when in pressure contact; and a switching unit selectively switching a pressure contact state of the heating structure and the pressure structure between a first state, a second state, and a release state. The switching unit includes: a first switcher directly switching the pressure contact state between the first state and the second state without switching the pressure contact state to the release state; a second switcher switching the pressure contact state between the first state and the release state; an acquirer acquiring information relating to which state the pressure contact state is to be switched into; and a controller controlling the first switcher and the second switcher based on the acquired information to switch the pressure contact state.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: July 28, 2020
    Assignee: Konica Minolta, Inc.
    Inventors: Masashi Nakabo, Naoki Kataoka
  • Patent number: 10719040
    Abstract: A fixing device is for fixing a toner image on a recording medium an image forming apparatus. The fixing device includes a fixing belt, a heating member, a nip area member, a pressing member, and a protrusion. The fixing belt is held by the heating member and the nip area member. The pressing member presses the fixing belt against the nip area member while being rotationally driven. The toner image is fixed on the recording medium in a nip area where the pressing member presses the fixing belt against the nip area member. The protrusion is in contact with the inner surface of the fixing belt. In the fixing device, the fixing belt is in contact with small areas only other than the heating area and the nip area to reduce the heat loss.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: July 21, 2020
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yoshikazu Tsubotani, Yusuke Mamiya, Motoki Nakano
  • Patent number: 10684578
    Abstract: An image forming apparatus includes: an image forming unit that forms an unfixed image on a sheet; and a fixing unit that includes a first rotary member and a second rotary member, which are in contact with each other to form a nip part, and that fixes the unfixed image formed in the image forming unit to the sheet by allowing the sheet to pass through the nip part. When a large-width sheet having a larger width than a preceding sheet that has previously passed through the nip part is allowed to pass through the nip part, adjustment in which the first rotary member and the second rotary member are displaced in directions away from each other, while forming the nip part, is performed in the fixing unit.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: June 16, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Masataka Konishi
  • Patent number: 10678170
    Abstract: A fixing device includes a fixing rotator being rotatable and a heater to heat the fixing rotator. The heater includes a tube, a heat generator, disposed inside the tube, to generate heat, and a sealing portion, disposed at each lateral end of the tube in a longitudinal direction of the heater, to seal the tube. A reflector reflects heat radiated from the heater toward the fixing rotator. The reflector includes an outboard edge being disposed inboard from at least a part of the sealing portion in an axial direction of the fixing rotator.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: June 9, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasunori Ishigaya, Kazuya Saito, Keitaro Shoji, Toshihiko Shimokawa, Hiromasa Takagi
  • Patent number: 10649376
    Abstract: When a nip portion has a region through which a recording material passes, and a part of the region is an image heating region where an image region on the recording material passes through, and the rest of the region is a non-image heating region where a non-image region on the recording material passes through, a control portion controls heating elements corresponding to the non-image heating region, out of the plurality of heating elements, so as to maintain a control target temperature, which is set based on the amount of the image heating apparatus used.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: May 12, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yusuke Jota, Atsushi Iwasaki
  • Patent number: 10635035
    Abstract: A fixing device includes a pressure roller and a pressure pad that form a nip portion, and a nip member disposed opposite to the pressure roller as viewed from the pressure pad. The pressure pad is formed of an elongated flat-plate member and includes a first main surface located on a pressure roller side and a second main surface located on a nip member side. The nip member includes a receiving portion abutting against the pressure pad in a pressed state. A portion of the second main surface which corresponds to a passage region of the recording material provided at the nip portion is provided with a plurality of recesses, and the entire perimeter of each of the plurality of recesses is surrounded by projections. Top surfaces of the projections are in close contact with the receiving portion in the pressed state.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: April 28, 2020
    Assignee: KONICA MINOLTA, INC.
    Inventor: Shinichi Yabuki
  • Patent number: 10599080
    Abstract: A fixing device includes a casing, a fixing member, a pressuring member, a pressure adjusting part and a correction biasing part. The fixing member heats a toner image on a medium while rotating inside the casing. The pressuring member forms a pressuring area with the fixing member while rotating inside the casing to pressure a toner on the medium passing through the pressuring area. The pressure adjusting part presses one of the fixing member and the pressuring member to the other to pressurize the pressuring area, and releases pressing of the one to depressurize the pressuring area. The correction biasing part, in a case where a supporting shaft part supporting the other by the casing penetrates the casing, biases both sides in an axial direction of the supporting shaft part extended to the outside of the casing in a similar direction to a pressurizing direction of the pressure adjusting part.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: March 24, 2020
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hirofumi Tsuji
  • Patent number: 10599092
    Abstract: An image forming apparatus includes: a heating unit; a pressure roller; a first frame supporting the heating unit; a second frame engaging the first frame; a first gear; a second gear; and a fixing member. The second frame supports a shaft portion of the pressure roller. The first gear is provided at one end of the shaft portion and rotatable with the pressure roller. The second gear engages the first gear and transmits a drive force to the first gear. The fixing member has a first portion engaging the shaft portion and a second portion engaging the second frame. At least a part of the first portion engages the shaft portion at a position on a downstream side of the shaft portion in a second direction in which the shaft portion receives a force upon transmission of the drive force.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: March 24, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Hiroki Mori, Hiroshi Handa, Tatsuo Ogasawara, Takuji Matsuno
  • Patent number: 10571837
    Abstract: A fixing device includes a fixing rotator that is flexible, endless, and rotatable. A heater heats the fixing rotator. A pressure rotator is disposed opposite the fixing rotator. A nip former defines a fixing nip between the fixing rotator and the pressure rotator. A support supports the nip former. The nip former includes a back face that contacts the support and has a nonlinear shape in a longitudinal direction of the nip former.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: February 25, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yoshiki Yamaguchi, Ippei Fujimoto, Hiroyuki Shimada, Takayuki Seki, Takashi Seto, Yoshiyuki Fukuda, Hiroshi Yoshinaga
  • Patent number: 10571834
    Abstract: A fixing method is provided including the step of fixing a toner on a recording medium with a fixing device. The toner has a binder resin, a colorant, and a release agent, and has a release agent amount indicator of from 0.01 to 0.20. The release agent amount indicator is represented by a ratio (P2850/P828) of an intensity (P2850) at a wave number of 2,850 cm?1 to an intensity (P828) at a wave number of 828 cm?1 of the toner measured by a Fourier transform infrared spectroscopy attenuated total reflection method. The fixing device includes a fixing rotator driven to rotate by a driving source, a pressure rotator driven to rotate by rotation of the fixing rotator, a fixing belt interposed between the fixing rotator and the pressure rotator, and a heater to heat the fixing belt.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: February 25, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryohei Matsuda, Takamasa Hase, Daisuke Inoue, Teppei Kawata, Akio Takei
  • Patent number: 10551778
    Abstract: A fixing device includes a fixing member, a fixing frame and an upper cover. The fixing member is configured to rotate around a rotation axis extending along one direction and configured to fix a toner image on a recording medium. The fixing frame is configured to cover an upper side of the fixing member. The upper cover is configured to cover an upper side of the fixing frame. An air layer for heat insulation is formed between the fixing frame and the upper cover.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: February 4, 2020
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Tomohiro Watatani
  • Patent number: 10551773
    Abstract: A cleaning apparatus and a fixing apparatus include a cleaning web configured to remove toner adhering to a rotation member, the cleaning web including a recessed portion in at least a part thereof, and a displacement mechanism configured to situate a relative position between the rotation member and a pressure member configured to press the cleaning web toward the rotation member at a first position where the cleaning web is pressed toward the rotation member by the pressure member and at a second position where the rotation member and the pressure member are farther from each other than at the first position. The displacement mechanism situates the relative position at the second position based on an output of a detection position configured to detect a position of the recessed portion, so that a rear end of the recessed portion is not pressed toward the rotation member by the pressure member.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: February 4, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji Takematsu, Taiya Hirayama, Kenichi Tanaka, Takeshi Kozuma, Atsushi Ishigami
  • Patent number: 10539376
    Abstract: Some examples include a fuser assembly to operate with a roller including a fuser housing, and an array of fusers disposed in the fuser housing, each fuser including a heating element exposed along a surface of the fuser housing and adjacent to an outer surface of the roller.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: January 21, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Steve O Rasmussen
  • Patent number: 10527984
    Abstract: The fixing device includes a fixing belt, a pressing member, a pushing member and a cap. The fixing belt is endless and rotatable. The pressing member is configured to form a pressing area with the fixing belt. The pushing member is configured to come into contact with an inner circumferential face of the fixing belt via a lubricant and to push the fixing belt to the pressing member at the pressing area. The cap is configured to be attached to an end portion of the fixing belt through an elastic member. The cap has a contact part with which an end face of the fixing belt comes into contact. The contact part has a groove configured to store the lubricant leaked from the fixing belt. The groove is formed such that a width is varied along a radial direction of the cap.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: January 7, 2020
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Yuzuru Nanjo
  • Patent number: 10509356
    Abstract: An image forming apparatus includes an image forming portion, a fixing portion, a reversing portion, a re-feeding path, a detecting portion, a first feeding path, a second feeding path, an air flow generating portion, and a flow path forming portion. The flow path forming portion forms a flow path along which air flow is passed through between a recording material passing through the second feeding path and a constituent portion constituting the second feeding path on a side toward the detecting portion and guides the recording material passing through the second feeding path, when the recording material passes through the second feeding path.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: December 17, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshitaka Zaitsu, Kazushi Suzuki, Atsushi Ogata
  • Patent number: 10479110
    Abstract: In one example, a system for partially dried inkjet media fusers include a plurality of fusers aligned to receive partially dried inkjet media from a printing device, wherein the plurality of fusers each comprise a top roller and a bottom roller to apply pressure to the received partially dried inkjet media, and a finisher to receive the partially dried inkjet media from the plurality of fusers.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: November 19, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Steve O Rasmussen, Mark H MacKenzie, Bradley B Branham, Jeffrey G Bingham
  • Patent number: 10474077
    Abstract: A fixing device includes a heating unit that is rotatable and includes a heat source; a pressing unit that is rotatable and forms a nip together with the heating unit; and a contact unit capable of coming into contact with and moving away from the heating unit. The contact unit is positioned so that the contact unit does not overlap a region above the heating unit in a vertical direction when the contact unit is in contact with the heating unit and also does not overlap the region above the heating unit in the vertical direction when the contact unit is separated from the heating unit.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: November 12, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Yuichiro Saito
  • Patent number: 10474074
    Abstract: A film for use in a fixing device includes a base layer having a cylindrical shape. An electrode portion is formed at an end part of the base layer in a longitudinal direction of the film. A heat generation portion is formed at a central part of the base layer in the longitudinal direction of the film and electrically connected to the electrode portion. The heat generation portion is formed of a conductive layer made of a same material as a material of the electrode portion. A thickness of the conductive layer is larger in the electrode portion than in the heat generation portion. A surface area of the conductive layer per unit length in the longitudinal direction of the film is larger in the electrode portion than in the heat generation portion.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: November 12, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Shinji, Takashi Narahara, Kazuhiro Doda, Yutaka Sato, Kohei Wakatsu
  • Patent number: 10466628
    Abstract: A fixing belt includes a base composed of a foamed resin layer which contains a flat-shaped heat transfer agent and whose thermal conductivity in a direction of the thickness of the belt is 0.5 W/(m·K) or more.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: November 5, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Shigeru Fukuda
  • Patent number: 10466612
    Abstract: An image forming apparatus has a holding member that holds a lens array and a circuit board. In the holding member, a portion where a light emission portion is attached, a portion where the lens array is attached, a portion where the circuit board is attached, and a portion where a first link member and a second link member are connected, are integrally molded as a molded resin article.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: November 5, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuta Okada, Yasuaki Otoguro, Daisuke Aruga, Hitoshi Iwai, Shinichiro Hosoi, Yuichiro Imai, Toshiki Momoka, Yoshitaka Otsubo, Saimon Gokyu, Takehiro Ishidate
  • Patent number: 10466631
    Abstract: A fixing device capable of stably performing a fixing operation for a long time is provided. The fixing device includes a cylindrical fixing belt and a heater. The fixing belt includes a resin layer forming an inner circumferential surface contactable with the heater. The heater includes a surface layer forming a sliding surface sliding on the fixing belt. The surface layer is an amorphous carbon film containing graphite particles. The sliding surface includes protrusions derived from the graphite particles. The protrusions have a distribution density of 50 to 2000 per 1 square millimeter of the sliding surface.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: November 5, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yusuke Owaki, Hirotaka Fukushima
  • Patent number: 10459382
    Abstract: The image forming apparatus of the present invention has an apparatus main body including a link mechanism that an opening and closing member contacts, and a regulating portion regulating the movement of a shutter, and when the opening and closing member is further pushed in a closing direction at the time when the shutter is located at a second position, the link mechanism allows to move the opening and closing member in the closing direction while keeping a position of the shutter maintains at the second position by the regulating portion.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: October 29, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoichiro Iizuka
  • Patent number: 10452009
    Abstract: A heater holder includes a restriction portion and a recessed portion. The restriction portion determines the position of a cable in the longitudinal direction of the heater. The recessed portion, against which a bare conductive portion of the cable is to be positioned, is provided at a position that is different from the position of the restriction portion as viewed in a direction intersecting with the longitudinal direction. A wire is joined to the bare conductive portion somewhere between the restriction portion and the recessed portion.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: October 22, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keisuke Fujita, Takayuki Sugiyama
  • Patent number: 10452018
    Abstract: A paper dust collecting member removes and collects paper dust attached to a conveying roller, and is attachable along the attaching direction parallel to the axial direction of the conveying roller via an opening portion provided in a side plate of an apparatus main body. The paper dust collecting member has a removing member and a holding member. The removing member removes paper dust attached to the conveying roller. The holding member holds the removing member. The holding member includes a protrusion portion which is disposed, on its distal end portion side, along a side surface of the removing member and which protrudes in the thickness direction of the removing member beyond a contact surface of the removing member.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: October 22, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Hiroyuki Maeda, Yoshiaki Tashiro
  • Patent number: 10444684
    Abstract: A fixing device includes an endless fixing belt, a flat heater, a holder and a pressuring member. The flat heater heats the fixing belt. The holder holds the flat heater so that the flat heater comes into contact with an inner circumference face of the fixing belt, and includes a recessed portion composing a gap between the holder and a face of the flat heater at an opposite side to the fixing belt across the flat heater. The pressuring member sandwiches the fixing belt between the flat heater and the pressuring member, and forms a pressuring area, where a sheet is sandwiched and conveyed at, between the fixing belt and the pressuring member. In a conveying direction of the sheet, a depth of the gap at a first position is larger than a depth of the gap at a second position at a downstream side from the first position.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: October 15, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Kotatsu Kawaguchi
  • Patent number: 10429783
    Abstract: In a fixing apparatus, a width of a first portion of a first heat generating resistor is narrower than a width of a second portion, at least a portion of an outline of the first portion on the near side with respect to a power shut-off member is provided at a position closer to the power shut-off member than an outline of the second portion on the near side with respect to the power shut-off member, and at least a portion of an outline of the first portion on the far side with respect to the power shut-off member is provided at a position closer to the power shut-off member than an outline of the second portion on the far side with respect to the power shut-off member.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: October 1, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toru Imaizumi, Hikaru Osada, Nozomu Nakajima, Shoichiro Ikegami
  • Patent number: 10429779
    Abstract: An image forming apparatus includes a heater and a controller. The heater includes a plurality of heater elements arranged in a main scanning direction to fix an image on a sheet passing a nip. The controller is configured to determine image-forming regions and non-image-forming regions among sheet regions of the sheet divided in the main scanning direction and a sub-scanning direction based on image data of the image. The controller is further configured to determine, as heating regions, the image-forming regions and a first part of the non-image-forming regions satisfying a predetermined condition, and determine, as non-heating regions, a second part of the non-image-forming regions not satisfying the predetermined condition. The controller is configured to energize one or more of the heater elements corresponding to the heating regions, selectively at timing when the heating regions pass the nip.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: October 1, 2019
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Ken Iguchi