Patents by Inventor Satoshi Nishida

Satoshi Nishida 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).

  • Patent number: 12353164
    Abstract: The electrophotographic apparatus includes: an electrophotographic photosensitive member; a charging unit; an image-exposing unit; a charge transfer amount-sensing unit for sensing the amount of charge transferred to the electrophotographic photosensitive member; and an exposed portion potential-controlling unit for controlling the potential of each of the exposed portions of the electrophotographic photosensitive member based on a sensing result, which is obtained by charging the electrophotographic photosensitive member with the charging unit, performing image exposure with the image-exposing unit in at least one light amount weaker than a light amount in which the normalized radius of curvature R of the electrophotographic photosensitive member represented by the following equation (E1), the normalized radius of curvature being obtained by a method of measuring an EV curve, shows a minimum, and in at least two light amounts stronger than the light amount in which the normalized radius of curvature shows th
    Type: Grant
    Filed: July 27, 2022
    Date of Patent: July 8, 2025
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Akihiro Maruyama, Kenichi Kaku, Shuhei Iwasaki, Kohei Makisumi, Michiyo Sekiya, Kaname Watariguchi, Hideharu Shimozawa, Tatsuya Yamaai, Takanori Mitani, Satoshi Nishida
  • Patent number: 12346043
    Abstract: A heating device includes a first rotating body, a heater, a temperature detection element, and a heater holder. The heater includes a heating element and a substrate on which the heating element is located. The temperature detection element is located on a second surface of the substrate opposite to a first surface of the substrate in a thickness direction of the substrate. The heater holder includes a reservoir portion configured to reserve grease to be supplied to between the first rotating body and the heater in a longitudinal direction of a longer side of the first surface of the substrate. A length of an area in the thickness direction of the reservoir portion overlapping an area where the temperature detection element is located is greater than a length of an area in the thickness direction of the reservoir portion not overlapping the area where the temperature detection element is located.
    Type: Grant
    Filed: November 7, 2023
    Date of Patent: July 1, 2025
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takanori Mitani, Satoshi Nishida, Isamu Takeda
  • Publication number: 20250208550
    Abstract: A fixing apparatus includes first and second rotating members, a heater having a heating element and a substrate, and first and second contact members. A direction of a longer side on a surface of the substrate where the heating element is disposed is a longitudinal direction. A direction intersecting the longitudinal direction is a widthwise direction. The first contact member is disposed in a region outside a region where a maximum size recording material conveyed to a nip portion passes through the nip portion on one end side in the longitudinal direction on an outer circumferential surface of the first rotating member, and the second contact member is disposed in the region outside the region where the maximum size recording material conveyed to the nip portion passes through the nip portion on an other end side in the longitudinal direction on an outer circumferential surface of the second rotating member.
    Type: Application
    Filed: March 12, 2025
    Publication date: June 26, 2025
    Inventors: TAKAO KUME, AKIMICHI SUZUKI, SATOSHI NISHIDA, KOHEI OKAYASU, TAKANORI MITANI
  • Publication number: 20250199458
    Abstract: An image forming apparatus including: an apparatus main body having an opening; a moving member holding a cartridge and movable through the opening between a housed position and an exposed position; an opening/closing portion configured to be rotatable between an open position and a closed position, and includes a first support portion and a second support portion that support the moving member located at the exposed position; and a metal member that is attached to the opening/closing portion and faces the moving member in a state in which the moving member is located at the exposed position and supported by the first support portion and the second support portion. The metal member is placed between the first support portion and the second support portion in a rotation axis direction of the opening/closing portion.
    Type: Application
    Filed: December 16, 2024
    Publication date: June 19, 2025
    Inventors: KOHEI OKAYASU, SHUMA HIASA, MASAKI TANAKA, SATOSHI NISHIDA
  • Patent number: 12271133
    Abstract: A fixing apparatus includes first and second rotating members, a heater having a heating element and a substrate, and first and second contact members. A direction of a longer side on a surface of the substrate where the heating element is disposed is a longitudinal direction. A direction intersecting the longitudinal direction is a widthwise direction. The first contact member is disposed in a region outside a region where a maximum size recording material conveyed to a nip portion passes through the nip portion on one end side in the longitudinal direction on an outer circumferential surface of the first rotating member, and the second contact member is disposed in the region outside the region where the maximum size recording material conveyed to the nip portion passes through the nip portion on an other end side in the longitudinal direction on an outer circumferential surface of the second rotating member.
    Type: Grant
    Filed: December 18, 2023
    Date of Patent: April 8, 2025
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takao Kume, Akimichi Suzuki, Satoshi Nishida, Kohei Okayasu, Takanori Mitani
  • Publication number: 20250110430
    Abstract: An image forming apparatus includes a plurality of developing member to form toner images, respectively, a transfer member to sequentially transfer the toner images onto a recording material and to overlappingly form toner on the recording material. A fixing member presses and heats the recording material on which the toner images are transferred and fixes the toner images on the recording material. A storage medium stores a usage history of the developing member. A controller controls a fixing temperature of the fixing member. The controller determines the fixing temperature based on a difference between the usage history of one of the developing member stored in the storage medium and the usage history of another of the developing member.
    Type: Application
    Filed: August 23, 2024
    Publication date: April 3, 2025
    Inventors: SATOSHI NISHIDA, TAKANORI MITANI, KOHEI OKAYASU
  • Patent number: 12265340
    Abstract: An image-forming apparatus includes first and second photosensitive drums, first and second image-forming portion including first and second development rollers configured to bear developers composed of first and second toner particles and organosilicon protrusions formed on surfaces of the first and second toner particles, an intermediate transfer member to which a developer image is to be transferred in first and second contact portions in contact with the first and second photosensitive drums, and a transfer member configured to transfer the developer image to a recording material in a transfer portion. The first contact portion is formed downstream of the transfer portion and upstream of the second contact portion in a movement direction of the surface of the intermediate transfer member. A protrusion formed on the second developer has a lower height than a protrusion formed on the first developer.
    Type: Grant
    Filed: May 21, 2024
    Date of Patent: April 1, 2025
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takanori Mitani, Takao Kume, Satoshi Nishida, Isamu Takeda, Kohei Okayasu
  • Patent number: 12181819
    Abstract: A fixing apparatus includes a first rotary member, a heating element, a second rotary member, a nip member, a reflection member, and a support member. The support member configured to transit to a pressurized state and a non-pressurized state, the pressurized state being a state in which a first position and a second position of the support member are pressurized in a pressurization direction toward the second rotary member, the non-pressurized state being in which the pressurized state of the support member is released. The support member includes a contact surface in contact with the reflection member in the pressurized state. The contact surface takes such a posture that a center position between the first and second positions in the rotation axial direction is close to the second rotary member rather than the first and second positions in a case where the support member is in the non-pressurized state.
    Type: Grant
    Filed: March 1, 2023
    Date of Patent: December 31, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Jun Hara, Satoshi Nishida, Takanori Mitani
  • Publication number: 20240368416
    Abstract: An aqueous ink for ink jet recording includes: a polysaccharide; a coloring agent; and water. The polysaccharide includes at least one of a polysaccharide having a glucose skeleton in a structure, and a derivative thereof, and a viscosity of a 30 wt % aqueous solution of the polysaccharide measured at 25° C. is 10.0 mPa·s or less.
    Type: Application
    Filed: April 29, 2024
    Publication date: November 7, 2024
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masato ISOGAI, Yuka TSUZAKA, Satoshi NISHIDA, Nanako MIYAGAWA
  • Publication number: 20240343282
    Abstract: A railroad crossing obstruction notification system includes a railroad crossing ground system that sends notification information based on detection information on a railroad crossing trouble at a railroad crossing and a relay ground system that is arranged along a track and can relay the notification information. The railroad crossing ground system sends the notification information including an instruction to a train based on the detection information and the railroad crossing ID of the railroad crossing in association with each other. If the railroad crossing ID included in the received notification information matches a relay-required railroad crossing ID of the railroad crossing that is stored as a relay target of the notification information, the relay ground system relays the received notification information.
    Type: Application
    Filed: June 24, 2024
    Publication date: October 17, 2024
    Inventors: Tossaporn SRISOOKSAI, Satoshi NISHIDA, Shuji NAMBU, Takeshi KOKUBU
  • Publication number: 20240302768
    Abstract: An image-forming apparatus includes first and second photosensitive drums, first and second image-forming portion including first and second development rollers configured to bear developers composed of first and second toner particles and organosilicon protrusions formed on surfaces of the first and second toner particles, an intermediate transfer member to which a developer image is to be transferred in first and second contact portions in contact with the first and second photosensitive drums, and a transfer member configured to transfer the developer image to a recording material in a transfer portion. The first contact portion is formed downstream of the transfer portion and upstream of the second contact portion in a movement direction of the surface of the intermediate transfer member. A protrusion formed on the second developer has a lower height than a protrusion formed on the first developer.
    Type: Application
    Filed: May 21, 2024
    Publication date: September 12, 2024
    Inventors: TAKANORI MITANI, TAKAO KUME, SATOSHI NISHIDA, ISAMU TAKEDA, KOHEI OKAYASU
  • Publication number: 20240255875
    Abstract: A fixing apparatus includes first and second rotating members, a heater having a heating element and a substrate, and first and second contact members. A direction of a longer side on a surface of the substrate where the heating element is disposed is a longitudinal direction. A direction intersecting the longitudinal direction is a widthwise direction. The first contact member is disposed in a region outside a region where a maximum size recording material conveyed to a nip portion passes through the nip portion on one end side in the longitudinal direction on an outer circumferential surface of the first rotating member, and the second contact member is disposed in the region outside the region where the maximum size recording material conveyed to the nip portion passes through the nip portion on an other end side in the longitudinal direction on an outer circumferential surface of the second rotating member.
    Type: Application
    Filed: December 18, 2023
    Publication date: August 1, 2024
    Inventors: TAKAO KUME, AKIMICHI SUZUKI, SATOSHI NISHIDA, KOHEI OKAYASU, TAKANORI MITANI
  • Patent number: 12019380
    Abstract: An image-forming apparatus includes first and second photosensitive drums, first and second image-forming portion including first and second development rollers configured to bear developers composed of first and second toner particles and organosilicon protrusions formed on surfaces of the first and second toner particles, an intermediate transfer member to which a developer image is to be transferred in first and second contact portions in contact with the first and second photosensitive drums, and a transfer member configured to transfer the developer image to a recording material in a transfer portion. The first contact portion is formed downstream of the transfer portion and upstream of the second contact portion in a movement direction of the surface of the intermediate transfer member. A protrusion formed on the second developer has a lower height than a protrusion formed on the first developer.
    Type: Grant
    Filed: January 19, 2023
    Date of Patent: June 25, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takanori Mitani, Takao Kume, Satoshi Nishida, Isamu Takeda, Kohei Okayasu
  • Patent number: 11988982
    Abstract: A heater includes a substrate, a first heating element and a second heating element disposed on a first surface of the substrate, a temperature detection element, and a conductor. The temperature detection element is disposed on a second surface of the substrate opposite the first surface of the substrate. The conductor is disposed on the second surface and connected to the temperature detection element. The first heating element has a first distance from the temperature detection element in a lateral direction of the substrate orthogonal to a longitudinal direction of the substrate, and the second heating element has a second distance that is greater than the first distance from the temperature detection element in the lateral direction. As viewed in a thickness direction of the substrate orthogonal to the lateral direction and the longitudinal direction of the substrate, the conductor overlaps the first heating element and the second heating element.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: May 21, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Nishida, Masahito Omata, Isamu Takeda, Takao Kume
  • Publication number: 20240152079
    Abstract: A heating device includes a first rotating body, a heater, a temperature detection element, and a heater holder. The heater includes a heating element and a substrate on which the heating element is located. The temperature detection element is located on a second surface of the substrate opposite to a first surface of the substrate in a thickness direction of the substrate. The heater holder includes a reservoir portion configured to reserve grease to be supplied to between the first rotating body and the heater in a longitudinal direction of a longer side of the first surface of the substrate. A length of an area in the thickness direction of the reservoir portion overlapping an area where the temperature detection element is located is greater than a length of an area in the thickness direction of the reservoir portion not overlapping the area where the temperature detection element is located.
    Type: Application
    Filed: November 7, 2023
    Publication date: May 9, 2024
    Inventors: TAKANORI MITANI, SATOSHI NISHIDA, ISAMU TAKEDA
  • Publication number: 20240111231
    Abstract: An image forming apparatus includes: a first and second rotation bodies; a heater disposed in the first rotation body; and a frame body supporting the first and second rotation bodies. A second length is smaller than a first length in a rotational axis direction of the second rotation body, the first length and the second length being a length of a rotation shaft of the second rotation body exposed on a one-end side and an other-end side of the second rotation body, and a second value is larger than a first value, the first value and the second value being a total area of openings disposed in a first region and a second region of the frame body respectively corresponding to the one-end side and the other-end side of the frame body with respect to a center of the frame body.
    Type: Application
    Filed: September 22, 2023
    Publication date: April 4, 2024
    Inventors: SATOSHI NISHIDA, KOHEI OKAYASU, TAKAO KUME
  • Patent number: 11927894
    Abstract: An image forming apparatus includes first and second image bearing members and first and second developing members. The controller controls to execute first and second controls based on image information in a case that the first developing member is separated from the first image bearing member when an operation in which the image is sequentially transferred to a transferred member from the first and second image bearing members is terminated. The first developing member is started to separate from the first image bearing member in the first control after an end of an image forming area on the first image bearing member in a moving direction passes through the first transfer position, and in the second control after the end of the image forming area on the first image bearing member in the moving direction passes through the developing position and before the end of the image forming area reaches the first transfer position.
    Type: Grant
    Filed: July 8, 2022
    Date of Patent: March 12, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takao Kume, Satoshi Nishida, Isamu Takeda, Takanori Mitani
  • Publication number: 20240077816
    Abstract: A fixing apparatus includes an endless first rotary member, a heating element, a second rotary member configured to form a nip portion, and a nip member configured to receive radiant heat from the heating element and heat the nip portion. The nip member includes a main-body portion that contains aluminum or aluminum alloy and a protective layer that includes an oxide film formed on a surface of the main-body portion. The main-body portion contains a heat receiving surface that faces the heating element and receives radiant heat from the heating element, and a rubbed surface that is rubbed against the inner circumferential surface of the first rotary member. The protective layer contains coloring agent that causes an emissivity of the heat receiving surface and the rubbed surface to be higher than an emissivity of a natural color oxide film.
    Type: Application
    Filed: October 18, 2023
    Publication date: March 7, 2024
    Inventors: Isamu Takeda, Takanori Mitani, Satoshi Nishida, Takeshi Shinji
  • Patent number: 11852987
    Abstract: An image forming apparatus includes a rotatable photosensitive member, a charging member, an exposing unit to form an electrostatic latent image by exposing the surface of the photosensitive member charged by the charging member to light and, a developing member to develop the electrostatic latent image with toner. A controller controls so that a predetermined charging voltage is charged and the light is emitted by a low light quantity to a first non-print area, which is a non-print area provided in a region including the print area and the first non-print area with respect to a main scanning direction, and controls so that a charging voltage lower than the predetermined voltage is charged and exposure is not performed on a second non-print area, which is provided in a region including only the non-print area with respect to the main scanning direction.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: December 26, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isamu Takeda, Takanori Mitani, Satoshi Nishida, Takao Kume
  • Patent number: 11829089
    Abstract: A fixing apparatus includes an endless first rotary member, a heating element, a second rotary member configured to form a nip portion, and a nip member configured to receive radiant heat from the heating element and heat the nip portion. The nip member includes a main-body portion that contains aluminum or aluminum alloy and a protective layer that includes an oxide film formed on a surface of the main-body portion. The main-body portion contains a heat receiving surface that faces the heating element and receives radiant heat from the heating element, and a rubbed surface that is rubbed against the inner circumferential surface of the first rotary member. The protective layer contains coloring agent that causes an emissivity of the heat receiving surface and the rubbed surface to be higher than an emissivity of a natural color oxide film.
    Type: Grant
    Filed: February 15, 2023
    Date of Patent: November 28, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Isamu Takeda, Takanori Mitani, Satoshi Nishida, Takeshi Shinji