Patents by Inventor Naoya Kamimura

Naoya Kamimura 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: 20190339632
    Abstract: A developer cartridge may include: a first gear having a small-diameter gear portion and a large-diameter gear portion; and a second gear including: a first columnar portion centered on a second axis; a second columnar portion having a smaller diameter than the first columnar portion; a first engagement portion extending along a portion of a peripheral surface of the first columnar portion and engageable with the small-diameter gear portion; a second engagement portion extending along a portion of a peripheral surface of the second columnar portion and positioned closer to a housing than the first engagement portion in an axial direction and engageable with the large-diameter gear portion; and a protruding portion protruding in the axial direction and rotatable together with the first engagement portion and the second engagement portion. The second engagement portion may engage the large-diameter gear portion after the first engagement portion engages the small-diameter gear portion.
    Type: Application
    Filed: July 22, 2019
    Publication date: November 7, 2019
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Keita SHIMIZU, Takashi SHIMIZU, Hideshi NISHIYAMA, Naoya KAMIMURA, Tomonori WATANABE
  • Patent number: 10466646
    Abstract: A photosensitive drum is rotatable about a first axis extending in a particular direction. A frame rotatably supports the photosensitive drum. A developing roller is rotatable according to driving force about a second axis extending in the particular direction. A surface of the developing roller contacts a surface of the photosensitive drum through toner. A resistance generating member generates a resistance torque TQ1 serving as resistance between the frame and photosensitive drum in a case where the photosensitive drum rotates relative to the frame. In a case where the developing roller rotates according to the driving force in a state where the surface of the developing roller contacts the surface of the photosensitive drum through toner, the resistance torque TQ1 is smaller than a torque TQ2 that causes the photosensitive drum to rotate due to friction between the surface of the developing roller and the surface of the photosensitive drum.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: November 5, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Tomoya Ichikawa, Takashi Shimizu, Masaaki Furukawa, Naoya Kamimura, Takashi Yasuda, Masanari Yoshikawa, Koji Abe
  • Publication number: 20190332052
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Application
    Filed: May 10, 2019
    Publication date: October 31, 2019
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Patent number: 10451995
    Abstract: The image forming apparatus includes a drum cartridge having a photosensitive drum and a drum drive input member; a developing cartridge configured to be movably mounted to the drum cartridge, the developing cartridge comprising a developing roller disposed so as to face the photosensitive drum and a developing drive input member; a drum drive transmission member configured to engage with the drum drive input member and configured to transmit drum driving force to the drum drive input member while permitting a positional gap of the drum drive input member within a predetermined range; and a developing drive transmission member configured to engage with the developing drive input member and configured to transmit developing driving force to the developing drive input member while permitting a positional gap of the developing drive input member within a predetermined range.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: October 22, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Naoya Kamimura, Atsuhisa Nakashima
  • Publication number: 20190286012
    Abstract: A toner cartridge includes a casing, an auger rotatable about an axis extending in a first direction, an auger gear rotatable with the auger, an agitator aligned with the auger in a second direction, an agitator gear rotatable with the agitator, and a detection gear positioned opposite to the auger gear with respect to the agitator gear in the second direction. The detection gear is rotatable from a first position to a second position. At the first position, a through-hole or a cutout of the detection gear is positioned farther away from the auger than an outer surface of another end portion of the casing in the second direction is. At the second position, a portion of the detection gear different from the through-hole or the cutout is positioned farther away from the auger than the outer surface of the another end portion of the casing is.
    Type: Application
    Filed: May 31, 2019
    Publication date: September 19, 2019
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Hideshi NISHIYAMA, Naoya KAMIMURA, Tomonori WATANABE, Yasuo FUKAMACHI, Shinya KUSUDA, Tomoya YAMAMOTO
  • Patent number: 10365582
    Abstract: A developer cartridge may include: a first gear having a small-diameter gear portion and a large-diameter gear portion; and a second gear including: a first columnar portion centered on a second axis; a second columnar portion having a smaller diameter than the first columnar portion; a first engagement portion extending along a portion of a peripheral surface of the first columnar portion and engageable with the small-diameter gear portion; a second engagement portion extending along a portion of a peripheral surface of the second columnar portion and positioned closer to a housing than the first engagement portion in an axial direction and engageable with the large-diameter gear portion; and a protruding portion protruding in the axial direction and rotatable together with the first engagement portion and the second engagement portion. The second engagement portion may engage the large-diameter gear portion after the first engagement portion engages the small-diameter gear portion.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: July 30, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Keita Shimizu, Takashi Shimizu, Hideshi Nishiyama, Naoya Kamimura, Tomonori Watanabe
  • Patent number: 10338499
    Abstract: A toner cartridge includes a casing, an auger rotatable about an axis extending in a first direction, an auger gear rotatable with the auger, an agitator aligned with the auger in a second direction, an agitator gear rotatable with the agitator, and a detection gear positioned opposite to the auger gear with respect to the agitator gear in the second direction. The detection gear is rotatable from a first position to a second position. At the first position, a through-hole or a cutout of the detection gear is positioned farther away from the auger than an outer surface of another end portion of the casing in the second direction is. At the second position, a portion of the detection gear different from the through-hole or the cutout is positioned farther away from the auger than the outer surface of the another end portion of the casing is.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: July 2, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Hideshi Nishiyama, Naoya Kamimura, Tomonori Watanabe, Yasuo Fukamachi, Shinya Kusuda, Tomoya Yamamoto
  • Publication number: 20190163092
    Abstract: In a cartridge, a housing has a developer accommodating portion and includes a first side wall and a second side wall. A coupling member is disposed at a position opposite to the developer accommodating portion with respect to the first side wall. A detection body is disposed at a position opposite to the developer accommodating portion with respect to the second side wall. A first driving force transmission member is positioned at the same side with the coupling member with respect to the first side wall, and transmits driving force from the coupling member to a rotating member. A second driving force transmission member is positioned at the same side with the detection body with respect to the second side wall, and transmits driving force from the rotating member to the detection body.
    Type: Application
    Filed: January 31, 2019
    Publication date: May 30, 2019
    Inventors: Nao Itabashi, Naoya Kamimura
  • Patent number: 10303112
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: May 28, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Patent number: 10248076
    Abstract: A cartridge includes: a rotational body; a joint member having a first joint-side engagement part configured to be engaged to a rotational body-side engagement part with a predetermined moving range in a rotational direction, and a press member, wherein the joint member has a second joint-side engagement part configured to be engaged with a transfer-side engagement part with central axes of the joint member and the driving force transfer member being substantially matched, and wherein when the second joint-side engagement part is contacted to the driving force transfer member at a position at which the central axes of the joint member and the driving force transfer member are not matched, the joint member is rotated within the predetermined range and the second joint-side engagement part is thus moved, so that the second joint-side engagement part is engaged with the transfer-side engagement part in the rotational direction.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: April 2, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Naoya Kamimura
  • Patent number: 10209666
    Abstract: A developing cartridge includes first and second rotary members. The first rotary member is rotatable from a first position to a second position and from the second position to a third position, and includes a first gear part and a first rib. The first rib extends along an addendum circle of the first gear part. The second rotary member includes a second gear part and a second rib protruding outward in a radial direction of the second rotary member. The second rib is in contact the first rib during rotation of the first rotary member from the first position toward the second position. The second rib is separated from the first rib during rotation of the first rotary member from the second position toward the third position.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: February 19, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Keita Shimizu, Takashi Shimizu, Naoya Kamimura
  • Publication number: 20190049874
    Abstract: The image forming apparatus includes a drum cartridge having a photosensitive drum and a drum drive input member; a developing cartridge configured to be movably mounted to the drum cartridge, the developing cartridge comprising a developing roller disposed so as to face the photosensitive drum and a developing drive input member; a drum drive transmission member configured to engage with the drum drive input member and configured to transmit drum driving force to the drum drive input member while permitting a positional gap of the drum drive input member within a predetermined range; and a developing drive transmission member configured to engage with the developing drive input member and configured to transmit developing driving force to the developing drive input member while permitting a positional gap of the developing drive input member within a predetermined range.
    Type: Application
    Filed: October 16, 2018
    Publication date: February 14, 2019
    Inventors: Naoya Kamimura, Atsuhisa Nakashima
  • Publication number: 20190033779
    Abstract: A photosensitive drum is rotatable about a first axis extending in a particular direction. A frame rotatably supports the photosensitive drum. A developing roller is rotatable according to driving force about a second axis extending in the particular direction. A surface of the developing roller contacts a surface of the photosensitive drum through toner. A resistance generating member generates a resistance torque TQ1 serving as resistance between the frame and photosensitive drum in a case where the photosensitive drum rotates relative to the frame. In a case where the developing roller rotates according to the driving force in a state where the surface of the developing roller contacts the surface of the photosensitive drum through toner, the resistance torque TQ1 is smaller than a torque TQ2 that causes the photosensitive drum to rotate due to friction between the surface of the developing roller and the surface of the photosensitive drum.
    Type: Application
    Filed: March 22, 2018
    Publication date: January 31, 2019
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Tomoya ICHIKAWA, Takashi SHIMIZU, Masaaki FURUKAWA, Naoya KAMIMURA, Takashi YASUDA, Masanari YOSHIKAWA, Koji ABE
  • Patent number: 10191429
    Abstract: A main casing includes a driving source, a first sheet passage sensor for detecting a sheet, and a detecting sensor. A drum cartridge is detachably mounted on the main casing. The drum cartridge includes: a photosensitive drum being rotatable about a first axis extending in a first direction; a first detection gear being rotatable by receiving driving force from the driving source; and a first detection protrusion being rotatable together with the first detection gear. The first detection protrusion is arranged to contact the first sheet passage sensor. A developing cartridge is detachably mounted on the drum cartridge. The developing cartridge includes: a developing roller; a second detection gear being rotatable by receiving driving force from the driving source; and a second detection protrusion being rotatable together with the second detection gear. The second detection protrusion is arranged to contact the detecting sensor.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: January 29, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Naoya Kamimura
  • Patent number: 10189781
    Abstract: The onium salt of the present invention contains predetermined compound A represented by the general formula (1). The composition of the present invention contains the onium salt of the present invention, and an onium salt containing predetermined compound B represented by the general formula (2). The onium salt and the composition of the present invention exert well-balanced excellent physical properties in terms of cold curing properties, storage stability, thermal shock resistance after curing, and moisture resistance.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: January 29, 2019
    Assignee: ASAHI KASEI E-MATERIALS CORPORATION
    Inventors: Tadashi Shimura, Naoya Kamimura, Akira Otani, Hitoshi Shimada
  • Patent number: 10139749
    Abstract: The image forming apparatus includes a drum cartridge having a photosensitive drum and a drum drive input member; a developing cartridge configured to be movably mounted to the drum cartridge, the developing cartridge comprising a developing roller disposed so as to face the photosensitive drum and a developing drive input member; a drum drive transmission member configured to engage with the drum drive input member and configured to transmit drum driving force to the drum drive input member while permitting a positional gap of the drum drive input member within a predetermined range; and a developing drive transmission member configured to engage with the developing drive input member and configured to transmit developing driving force to the developing drive input member while permitting a positional gap of the developing drive input member within a predetermined range.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: November 27, 2018
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Naoya Kamimura, Atsuhisa Nakashima
  • Publication number: 20180321632
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Application
    Filed: July 11, 2018
    Publication date: November 8, 2018
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Patent number: 10048616
    Abstract: A developing cartridge may include: a casing; a first gear; and a second gear. The first gear may include: a small-diameter gear portion and a large-diameter gear portion. The second gear may include: a first columnar portion; a second columnar portion; a first engaging portion; a second engaging portion; and a protrusion. The first engaging portion may be provided at the first columnar portion and may be engageable with the small-diameter gear portion. The second engaging portion may be provided at the second columnar portion and positioned closer than the first engaging portion to the casing in the axials direction. The second engaging portion may be engageable with the large-diameter gear portion. The protrusion may be rotatable together with the first and second engaging portions. The second engaging portion may be engageable with the large-diameter gear portion after the first engaging portion has engaged with the small-diameter gear portion.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: August 14, 2018
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Keita Shimizu, Takashi Shimizu, Hideshi Nishiyama, Naoya Kamimura, Tomonori Watanabe
  • Patent number: 10048645
    Abstract: A process cartridge including: a photosensitive member cartridge including a photosensitive member; and a developing cartridge including a developer carrier. The developing cartridge further includes: an inputting portion; a first cover; and a second cover. The first cover has a first engagement portion configured to move the developer carrier away from the photosensitive member. The first engagement portion is positioned between an axis of the developer carrier extending in an axial direction and an axis of the inputting portion extending in the axial direction, when projected in the axial direction. The second cover has a second engagement portion configured to move the developer carrier away from the photosensitive member. The second engagement portion is positioned between the axis of the developer carrier and the axis of the inputting portion, when projected in the axial direction.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: August 14, 2018
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Nao Itabashi, Naoya Kamimura, Ryuya Yamazaki, Hideshi Nishiyama
  • Patent number: D849131
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: May 21, 2019
    Assignee: BROTHER INDUSTRIES, LTD.
    Inventors: Takashi Shimizu, Naoya Kamimura, Koji Abe, Hideshi Nishiyama, Keita Shimizu, Shinya Kusuda, Atsushi Fukaya, Tomoya Ichikawa