Patents by Inventor Kei Ishida

Kei Ishida has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210003952
    Abstract: A fixing device includes: a heater including (i) a substrate having conductivity, (ii) a first insulating layer provided on a first surface of the substrate, and (iii) a heating pattern constituted by a heating resistor and provided on an opposite side of the first insulating layer from the substrate; and an endless belt configured to rotate around the heater in a state in which an inner circumferential surface of the endless belt is in contact with the heater. The substrate is grounded.
    Type: Application
    Filed: July 1, 2020
    Publication date: January 7, 2021
    Applicant: Brother Kogyo Kabushiki Kaisha
    Inventor: Kei ISHIDA
  • Publication number: 20210003348
    Abstract: A heater includes: a substrate including a first surface and a second surface located opposite to the first surface relative to the substrate; a first heating pattern disposed on a first-surface side of the substrate; a second heating pattern disposed on the first-surface side of the substrate and located at a position different from a position of the first heating pattern; a first terminal to which electricity is to be supplied; a first power-supply pattern electrically connecting the first terminal and the first heating pattern to each other and disposed on a second-surface side of the substrate; and a first electrically-continuous portion extending through the substrate and electrically connecting the first power-supply pattern and the first heating pattern to each other.
    Type: Application
    Filed: July 1, 2020
    Publication date: January 7, 2021
    Applicant: Brother Kogyo Kabushiki Kaisha
    Inventor: Kei ISHIDA
  • Patent number: 10007214
    Abstract: An image forming apparatus includes a conveying device; a fixing device; and a controller. The controller is configured to perform: in response to determining that a first condition is met, starting sheet conveyance by the sheet conveying device upon expiration of a first predetermined period of time starting from receipt of a print instruction; and in response to determining that a second condition different from the first condition is met, starting sheet conveyance by the sheet conveying device at selective one of a first timing and a second timing. The second timing is selected upon determination that an accumulated amount of usage of the fixing device is not greater than a predetermined amount. The first timing is a timing at which a sensed temperature has reached a first threshold value. The second timing is a timing at which a second predetermine period of time has expired after the first timing.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: June 26, 2018
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masahiko Kamo, Kei Ishida
  • Patent number: 10001733
    Abstract: A fixing device includes a belt, and a belt guide configured to guide movement of the belt. The belt guide includes a base part and a first protrusion protruding from a surface of the base part toward a surface of the belt. The first protrusion has a distal end surface and a side surface, the surface of the belt being configured to contact the distal end surface, the distal end surface having a distal surface roughness, the side surface connecting the distal end surface and the surface of the base part. At least one of the side surface and the surface of the base part includes a rough region having a surface roughness higher than the distal surface roughness.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: June 19, 2018
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Mingguang Zhang, Takuji Matsuno, Kei Ishida, Kotaro Fujishiro
  • Patent number: 9921531
    Abstract: A fixing device includes an endless belt, a heater disposed inside the endless belt and being elongated in a longitudinal direction, the heater having a first end portion in the longitudinal direction and a second end portion opposite to the first end portion in the longitudinal direction, a resin frame having a recess portion opening toward an inner side of the endless belt, and a metal frame inserted into the recess portion of the resin frame. The metal frame has a first wall having a through-hole, and a second wall extending in a direction from the first end portion of the heater toward a second end portion of the heater, the second wall being disposed between the resin frame and the heater.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: March 20, 2018
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Kei Ishida
  • Patent number: 9869955
    Abstract: A fixing device includes: an endless fusing belt; a heater; a nip member; and a backup member. The endless fusing belt has a width in a widthwise direction. The nip member is disposed spaced apart from the heater. The nip member has a contact surface. The contact surface has widthwise end portions in the widthwise direction. The backup member is configured to nip the fusing belt in cooperation with the nip member. The fusing belt is configured to move in a moving direction at a position where the fusing belt is nipped between the nip member and the backup member. The contact surface has at least two grooves one formed in corresponding one of the widthwise end portions and another formed in the other of the widthwise end portions and extending at an angle equal to or smaller than 10 degrees with respect to the moving direction.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: January 16, 2018
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kei Ishida, Takuji Matsuno
  • Publication number: 20170363997
    Abstract: An image forming apparatus includes a conveying device; a fixing device; and a controller. The controller is configured to perform: in response to determining that a first condition is met, starting sheet conveyance by the sheet conveying device upon expiration of a first predetermined period of time starting from receipt of a print instruction; and in response to determining that a second condition different from the first condition is met, starting sheet conveyance by the sheet conveying device at selective one of a first timing and a second timing. The second timing is selected upon determination that an accumulated amount of usage of the fixing device is not greater than a predetermined amount. The first timing is a timing at which a sensed temperature has reached a first threshold value. The second timing is a timing at which a second predetermine period of time has expired after the first timing.
    Type: Application
    Filed: March 27, 2017
    Publication date: December 21, 2017
    Inventors: Masahiko Kamo, Kei Ishida
  • Publication number: 20170227900
    Abstract: A fixing device includes: an endless fusing belt; a heater; a nip member; and a backup member. The endless fusing belt has a width in a widthwise direction. The nip member is disposed spaced apart from the heater. The nip member has a contact surface. The contact surface has widthwise end portions in the widthwise direction. The backup member is configured to nip the fusing belt in cooperation with the nip member. The fusing belt is configured to move in a moving direction at a position where the fusing belt is nipped between the nip member and the backup member. The contact surface has at least two grooves one formed in corresponding one of the widthwise end portions and another formed in the other of the widthwise end portions and extending at an angle equal to or smaller than 10 degrees with respect to the moving direction.
    Type: Application
    Filed: April 27, 2017
    Publication date: August 10, 2017
    Inventors: Kei Ishida, Takuji Matsuno
  • Patent number: 9720359
    Abstract: A fixing device includes a frame, a first fixing member, a second fixing member, a first conducting member, and a second conducting member. The second fixing member includes a belt configured to form a nip region. The first fixing member is positioned at a first side and the second fixing member is positioned at a second side opposite to the first side. The first conducting member includes a first contacting portion exposed to an outside from the frame, and a first connecting portion electrically connecting the first fixing member and the first contacting portion. The second conducting member includes a second contacting portion exposed to an outside from the frame, and a second connecting portion electrically connecting the second fixing member and the second contacting portion. Both of the first contacting portion and the second contacting portion are positioned at one of the first side and the second side.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: August 1, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kei Ishida, Takuji Matsuno, Keita Shimizu
  • Patent number: 9690241
    Abstract: A fuser unit includes: an endless belt, which has an end portion having an end surface in a first direction; a nip member, which extends in the first direction and is arranged inside the endless belt; a belt guide, which is arranged to be in contact with the end surface of the endless belt and includes: a restraining part, which is configured to restrain the endless belt from moving in the first direction; and an inner surface guide, which extends from the restraining part into an inside of the endless belt and guides the inner circumferential surface of the endless belt; and an urging member, which is configured to urge the belt guide in a urging direction so that the inner surface guide is urged toward the inner circumferential surface of the endless belt.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: June 27, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Kei Ishida
  • Publication number: 20170160684
    Abstract: A fixing device includes a belt, and a belt guide configured to guide movement of the belt. The belt guide includes a base part and a first protrusion protruding from a surface of the base part toward a surface of the belt. The first protrusion has a distal end surface and a side surface, the surface of the belt being configured to contact the distal end surface, the distal end surface having a distal surface roughness, the side surface connecting the distal end surface and the surface of the base part. At least one of the side surface and the surface of the base part includes a rough region having a surface roughness higher than the distal surface roughness.
    Type: Application
    Filed: December 2, 2016
    Publication date: June 8, 2017
    Inventors: Mingguang Zhang, Takuji Matsuno, Kei Ishida, Kotaro Fujishiro
  • Patent number: 9671726
    Abstract: A fixing device for thermally fixing a developer image transferred onto a recording sheet, includes: a flexible fusing member which is flexibly deformable; a heating element; a nip member disposed in such a manner as to contact with a surface of the flexible fusing member and to allow the flexible fusing member to slide along the nip member; a reflecting plate configured to reflect radiant heat from the heating element in a direction toward the nip member; a backup member configured to nip the flexible fusing member with the nip member to thereby form a nip portion for the recording sheet between the flexible fusing member and the backup member; and a stay configured to support both end portions of the nip member. The reflecting plate has at least one flange portion, and the flange portion is held and supported between the nip member and the stay.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: June 6, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yoshihiro Miyauchi, Yasushi Fujiwara, Takuji Matsuno, Kei Ishida, Noboru Suzuki, Tomohiro Kondo
  • Patent number: 9651904
    Abstract: A fuser unit of this disclosure includes: an endless belt, a nip member; a belt guide; a first member, which has a contact surface configured to be in contact with the belt guide; and a second member, which includes a guide portion to guide the belt guide in a guide direction, wherein the belt guide comprises: a restraining part, which is arranged to be in contact with an end surface of the endless belt and which is spaced apart from the first member, an inner surface guide, which guides the inner circumferential surface of the endless belt, and a protrusion, which protrudes from the restraining part towards the contact surface of the first member and is arranged to be in contact with the contact surface of the first member.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: May 16, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kei Ishida, Atsushi Ozawa
  • Patent number: 9625864
    Abstract: A fixing device includes an endless belt, a heating plate, a pressure roller, a first belt guide and a second belt guide. The endless belt has a tubular shape and extends in a first direction. The heating plate is disposed inside the endless belt and extends in the first direction. The first belt guide guides an end of the endless belt in the first direction and includes an inner guide and a restriction portion to restrict movement of the endless belt in the first direction. The second belt guide faces the first belt guide in a second direction and extends from a vicinity of the heating plate to a vicinity of the inner guide along the inner peripheral surface of the endless belt. An end of the restriction portion in the second direction closer to the heating plate is located closer to the second belt guide than the inner guide.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: April 18, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kei Ishida, Takuji Matsuno, Hiroki Mori, Akihiro Kobayashi
  • Patent number: 9606483
    Abstract: A fixing device includes an endless belt, a nip member, a heater, a reflecting member, a load receiving member, and a protective member. The endless belt has end portions in the first direction and a middle portion defined between the end portions. The nip member is configured to contact an inner circumferential surface of the endless belt. The heater is disposed inside the endless belt. The reflecting member is entirely disposed on a nip-member side with respect to the heater and is configured to reflect radiant heat emitted from the heater toward the inner circumferential surface. The protective member is disposed between the middle portion of the endless belt and the heater and on a side opposite to the nip member with respect to the heater, and is configured to allow light to pass therethrough. The protective member is fastened to the load receiving member.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: March 28, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kei Ishida, Masahito Kajita, Kaoru Suzuki, Atsushi Ozawa, Kenji Takeuchi
  • Patent number: 9568870
    Abstract: A fuser unit of this disclosure includes: an endless belt; a nip member; a belt guide; a stay; a first member; a second member; and a backup member, wherein the belt guide, which is configured to guide the endless belt, has: a first surface, which faces in a direction from a second end portion towards a first end portion of the endless belt; a second surface, which faces in a direction from the first end portion towards the second end portion of the endless belt; a third surface, which faces in a direction from the stay towards the nip member; a fourth surface, which faces in a direction from the nip member towards the stay; a fifth surface and a sixth surface, which face in the conveyance direction and is arranged to be in contact with the first member.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: February 14, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kei Ishida, Takuji Matsuno, Atsushi Ozawa, Hiroki Mori
  • Patent number: 9541871
    Abstract: A fixing device includes a fixing belt, a heater, a nip plate, a pressure roller, a stay, a cover, and a spring. The fixing belt has an inner surface. The heater is configured to heat the fixing belt. The nip plate is configured to contact the inner surface. The pressure roller is configured to press the fixing belt in cooperation with the nip plate. The stay is provided at a position opposite to the pressure roller with respect to the nip plate. The stay is configured to receive a force applied to the nip plate from the pressure roller. The cover is configured to cover the stay. The spring includes a first portion configured to urge the stay to the cover, and a second portion configured to urge the cover to the stay.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: January 10, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Kei Ishida
  • Patent number: 9541870
    Abstract: A fixing device includes a tubular fusing film, a heater, a nip member, a backup member, a backup member, first supporting member, and a second supporting member. The heater may be disposed inside the tubular shape of the fusing film. The nip member may be disposed so as to be in sliding contact with the inner surface of the fusing film and heated by the heater. The backup member may form a nip portion between the backup member and the fusing film with the fusing film between the backup member and the nip member. The first supporting member may be configured to integrally support the heater and the nip member. The second supporting member may be configured to movably support the first supporting member so that the nip member moves relative to the backup member.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: January 10, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yasushi Fujiwara, Noboru Suzuki, Kei Ishida, Yoshihiro Miyauchi, Tomohiro Kondo
  • Publication number: 20160306307
    Abstract: A fixing device includes a frame, a first fixing member, a second fixing member, a first conducting member, and a second conducting member. The second fixing member includes a belt configured to form a nip region. The first fixing member is positioned at a first side and the second fixing member is positioned at a second side opposite to the first side. The first conducting member includes a first contacting portion exposed to an outside from the frame, and a first connecting portion electrically connecting the first fixing member and the first contacting portion. The second conducting member includes a second contacting portion exposed to an outside from the frame, and a second connecting portion electrically connecting the second fixing member and the second contacting portion. Both of the first contacting portion and the second contacting portion are positioned at one of the first side and the second side.
    Type: Application
    Filed: March 28, 2016
    Publication date: October 20, 2016
    Inventors: Kei Ishida, Takuji Matsuno, Keita Shimizu
  • Patent number: 9459571
    Abstract: A fixing device includes a heating element disposed inside a flexible fusing member, a nip member disposed to contact with a surface of the flexible fusing member and to allow the flexible fusing member to slide along the nip member, a reflecting plate for reflecting radiant heat from the heating element toward the nip member, and a backup member for nipping the flexible fusing member with the nip member. The reflecting plate includes a central reflecting portion extending along a longitudinal direction of the heating element at least in a region corresponding to along a heat generating portion of the heating element, and end reflecting portions stationarily provided on both ends of the central reflecting portion. The end reflecting portions are disposed in positions longitudinally outward of the heat generating portion and each has a reflecting surface tilted with respect to the longitudinal direction of the heating element.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: October 4, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Tomohiro Kondo, Yasushi Fujiwara, Kei Ishida, Noboru Suzuki, Takuji Matsuno