By Heat And Pressure Patents (Class 399/328)
  • Patent number: 11561491
    Abstract: A heating device comprising: a first rotating member having an internal space in which a heating member and a holding member are disposed; a second rotating member that contacts an outer peripheral surface of the first rotating member; and a frame that integrally supports the heating member, the holding member, the first rotating member and the second rotating member, wherein the second rotating member forms a nip portion between the first rotating member and the second rotating member, the holding member holds the heating member such that at least a part of at least one end face of the heating member in a longitudinal direction thereof is exposed in the longitudinal direction, and the frame is configured such that at least the part of the heating member, which is exposed from the holding member, is also exposed out of the frame.
    Type: Grant
    Filed: August 2, 2021
    Date of Patent: January 24, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masashi Tanaka, Hikaru Osada
  • Patent number: 11550242
    Abstract: A heating device includes a heating unit that heats in a non-contact manner an upper surface of a transport material that is transported, and a blowing unit that blows air against a lower surface of the transport material via a blowing hole that is provided in an opposing surface opposing the lower surface of the transport material, the opposing surface being obliquely disposed with respect to a horizontal direction.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: January 10, 2023
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Kosuke Yamada, Tetsuro Kodera, Takayuki Yamashita, Nobuyuki Nakayama
  • Patent number: 11520257
    Abstract: A first protrusion is provided between an operation lever and a lock lever. The operation lever is for moving a pressure roller. The lock lever is provided for a sheet guide member for guiding a sheet that has passed through a fixing unit downstream in the sheet conveyance direction. The lock lever is for locking the sheet guide member at a position where the sheet guide member is engaged with a housing. The first protrusion protrudes from the sheet guide member toward an exterior cover. The first protrusion is provided with a second protrusion on the lock lever side of the first protrusion.
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: December 6, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Koyama
  • Patent number: 11492502
    Abstract: The present invention provides a polyimide composite having a structural formula of PI/Fe3O4-(?-CD-Ada)x, wherein x=3-5. One aspect of the invention provides a polyimide composite. By introducing Fe3O4 as a host material of an electromagnetic wave absorption material and introducing a guest material, a repairing property of the material itself is imparted by an interaction between the host material and the guest material. Therefore, the polyimide composite has an electromagnetic radiation shielding property and a self-repairing property.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: November 8, 2022
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Yamin Wang
  • Patent number: 11454910
    Abstract: A nip formation member includes a base, a high thermal conduction member, and a securing member. The high thermal conduction member has a thermal conductivity greater than a thermal conductivity of the base. The securing member is independent from the base and the high thermal conduction member. The securing member is configured to restrict movement of the base relative to the high thermal conduction member.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: September 27, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Naoki Iwaya, Hitoshi Fujiwara
  • Patent number: 11454909
    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: November 11, 2021
    Date of Patent: September 27, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hikaru Osada, Toru Imaizumi
  • Patent number: 11314187
    Abstract: A fixing device includes a belt, a roller, a heater, a reflector board, a stay, and a thermally-conductive member. The belt is rotatable in a rotational direction. The roller is positioned to be in contact with an outer surface of the belt so as to form a nip between the roller and the belt. The heater is configured to heat an inner surface of the belt. The reflector board is configured to reflect heat generated by the heater toward the inner surface of the belt. The stay is in contact with the reflector board. The thermally-conducive member is thermally connected between the belt and at least one of the reflector board and the stay. The thermally-conducive member includes a first portion that is in contact with the belt at a first region downstream with respect to the nip in the rotational direction.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: April 26, 2022
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Kazuhiko Kikuchi
  • Patent number: 11300908
    Abstract: A fixing device includes a pressing member including a nip plate, and an electron beam-irradiated fluorinated resin film is to be on an outer surface of the nip plate facing toward the backup member.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: April 12, 2022
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Sunhyung Lee, Seachul Bae, Jaehyeok Jang, Jingue Ko, Yongho Chun
  • Patent number: 11281131
    Abstract: A fixing device includes a first fixing member, a second fixing member, a heater, a temperature sensor, a sensor holder, and a first frame. The temperature sensor detects a temperature of the first fixing member or the second fixing member. The sensor holder is configured to hold the temperature sensor and is fixed on the first frame. The first frame is made of metal and includes a first bend, a second bend, a third bend, a first wall, a second wall, a third wall, and a fourth wall. The second wall is connected to the first wall via the first bend. The third wall is connected to the second wall via the second bend. The fourth wall is connected to the third wall via the third bend. The first wall and the second wall form an acute angle.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: March 22, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Kazuna Taguchi
  • Patent number: 11243487
    Abstract: A heating unit includes a rotating cylinder rotating about an axis parallel to a first direction. A heater having a width in a second direction is on the inner surface of the cylinder. A support member holds the heater fixed relative to the cylinder and includes an upstream member adjacent to the heater in the second direction and a downstream member adjacent to the heater in the second direction. The support member has upstream ribs on the upstream member and downstream ribs on the downstream member, each rib having a curved shape facing the inner surface of the rotating cylinder and being spaced from each other in the first direction. The heating unit may include, in some examples, a stay supporting the support member, a guide member on the stay, and a temperature sensor.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: February 8, 2022
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Kousei Miyashita, Sasuke Endo
  • Patent number: 11237503
    Abstract: A heater includes an electrode, a heat generator, and a plurality of layers including a first layer and at least one additional layer disposed in an opposite side with respect to a surface on which the electrode is disposed. The at least one additional layer includes at least one of a plurality of portions, a gap at a location corresponding to the electrode, existing between the plurality of portions and a single portion, at least a part of the single portion corresponding to the electrode, being relatively thinner than a part of the single portion corresponding to the heat generator.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: February 1, 2022
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuusuke Furuichi, Tomoya Adachi, Yukimichi Someya
  • 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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