Patents by Inventor Mitsuru Hasegawa

Mitsuru Hasegawa 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: 20240066606
    Abstract: An insert may include a first surface, a second surface, a third surface located on a side opposite to the first surface, a cutting edge located on a ridgeline between the first surface and the second surface, and a convex part located more inside the first surface than the cutting edge. The first surface may include a groove extending from a first end part closest to the cutting edge to a second end part. The groove may include an opening located in the first surface, and a bottom surface. An imaginary plane which is orthogonal to a central axis and is located between the first surface and the third surface may be a reference plane, the bottom surface may include an inclined portion inclined so as to come closer to the reference plane as going toward the first end part in a breaker region.
    Type: Application
    Filed: October 28, 2021
    Publication date: February 29, 2024
    Inventor: Mitsuru HASEGAWA
  • Patent number: 11897666
    Abstract: A package includes a first side, a second side and a hinge. As the first side and the second side pivot around the hinge, the first side and the second side make transition between a closed state and an opened state. The first side includes a first fitting portion in a projecting shape, a rigid portion provided in a partial section on a line that goes around the first fitting portion, and a first weak portion provided in a remaining section on the line that goes around the first fitting portion and being lower in rigidity than the rigid portion. The second side includes a second fitting portion in a recessed shape and fitted to the first fitting portion in the closed state and a second weak portion provided on a line that goes around the second fitting portion and being lower in rigidity than the rigid portion.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: February 13, 2024
    Assignee: NIPRO CORPORATION
    Inventor: Mitsuru Hasegawa
  • Publication number: 20230364345
    Abstract: A pre-filled syringe includes a tubular container, a front end gasket, a rear end gasket, an intermediate gasket, and a plunger. The tubular container has an inner peripheral surface, a protruding inner side surface, and a receiving surface. A groove is formed in an outer peripheral surface of the intermediate gasket. The plunger has a connection portion, a pushing portion, and a guide rib. The protruding inner side surface is formed at a position facing the pushing portion in a pushing completion state. The guide rib is provided with a recess. A rear end portion of the recess is located rearward with respect to a rear end portion of the protruding inner side surface in the pushing completion state.
    Type: Application
    Filed: September 10, 2021
    Publication date: November 16, 2023
    Applicant: NIPRO CORPORATION
    Inventors: Ryo OGINO, Mitsuru HASEGAWA
  • Publication number: 20230338661
    Abstract: A pre-filled syringe includes a tubular container, a front end gasket, a rear end gasket, an intermediate gasket, a medicine, a liquid medicine, and a plunger. The tubular container has a barrel and a nozzle portion. The barrel has an inner peripheral surface and a protruding inner side surface. A groove is formed in an outer peripheral surface of the intermediate gasket. The front end gasket has a rear-end pressure-contact portion. The nozzle portion has an accommodation portion. The accommodation portion has a bottom wall, a peripheral wall, and a supporting portion. The rear-end pressure-contact portion is in pressure contact with the inner peripheral surface of the barrel in an abutment state in which the liquid medicine is introduced in the front chamber and the front end portion of the front end gasket is in abutment with the supporting portion.
    Type: Application
    Filed: September 10, 2021
    Publication date: October 26, 2023
    Applicant: NIPRO CORPORATION
    Inventors: Ryo OGINO, Mitsuru HASEGAWA, Yuma SHIRAISHI
  • Publication number: 20230304132
    Abstract: Provided are: a wear-resistant member using a Cr-based alloy material in which the cost can be reduced as compared with a Co-based alloy material and has wear resistance superior to that of the conventional Co-based alloy material; and a mechanical device using the wear-resistant member. The present invention is a wear-resistant member using a Cr-based alloy material, in which the Cr-based alloy material includes: more than 40 mass % and 65 mass % or less of Cr; 15 mass % or more and 40 mass % or less of Ni; more than 0 mass % and 30 mass % or less of Fe; 5 mass % or more and 16 mass % or less of Nb; 0.1 mass % or more and 0.9 mass % or less of Ti; 0.6 mass % or more and 2.5 mass % or less of C; 2 mass % or less of Mn; and impurities, and in which a mass ratio Ti/Nb of the Nb and the Ti is 0.063 or less.
    Type: Application
    Filed: June 9, 2021
    Publication date: September 28, 2023
    Applicant: Hitachi, Ltd.
    Inventors: Mitsuru HASEGAWA, Tomonori KIMURA, Masafumi NOUJIMA
  • Patent number: 11714368
    Abstract: An image forming apparatus includes a heating rotary member, a pressure rotary member, a nip portion formed by the rotary members, a temperature adjustment control section controlling a temperature of the heating rotary member to a target temperature, a cleaning web removing toner adhering to the heating rotary member, and a controller selectively executing one of a cleaning mode and a non-cleaning mode. A first basis weight and a second basis weight greater than the first predetermined basis weight are set, in a job that mixedly uses recording media with the first and second basis weights. When the controller executes the non-cleaning mode, the temperature adjustment control section sets a target temperature of a recording medium with a basis weight less than or equal to the first basis weight to a temperature lower than a target temperature of the recording medium in the cleaning mode.
    Type: Grant
    Filed: March 28, 2022
    Date of Patent: August 1, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsuru Hasegawa, Hiroki Kawai, Ayano Ogata, Yasuharu Toratani, Suguru Takeuchi, Youichi Chikugo, Hidekazu Tatezawa, Yutaro Tsuno, Kenichi Tanaka, Rikiya Takemasa
  • Publication number: 20230159233
    Abstract: A package includes a first side, a second side and a hinge. As the first side and the second side pivot around the hinge, the first side and the second side make transition between a closed state and an opened state. The first side includes a first fitting portion in a projecting shape, a rigid portion provided in a partial section on a line that goes around the first fitting portion, and a first weak portion provided in a remaining section on the line that goes around the first fitting portion and being lower in rigidity than the rigid portion. The second side includes a second fitting portion in a recessed shape and fitted to the first fitting portion in the closed state and a second weak portion provided on a line that goes around the second fitting portion and being lower in rigidity than the rigid portion.
    Type: Application
    Filed: September 27, 2019
    Publication date: May 25, 2023
    Applicant: NIPRO CORPORATION
    Inventor: Mitsuru HASEGAWA
  • Publication number: 20220308508
    Abstract: An image forming apparatus includes a heating rotary member, a pressure rotary member, a nip portion formed by the rotary members, a temperature adjustment control section controlling a temperature of the heating rotary member to a target temperature, a cleaning web removing toner adhering to the heating rotary member, and a controller selectively executing one of a cleaning mode and a non-cleaning mode. A first basis weight and a second basis weight greater than the first predetermined basis weight are set, in a job that mixedly uses recording media with the first and second basis weights. When the controller executes the non-cleaning mode, the temperature adjustment control section sets a target temperature of a recording medium with a basis weight less than or equal to the first basis weight to a temperature lower than a target temperature of the recording medium in the cleaning mode.
    Type: Application
    Filed: March 28, 2022
    Publication date: September 29, 2022
    Inventors: Mitsuru Hasegawa, Hiroki Kawai, Ayano Ogata, Yasuharu Toratani, Suguru Takeuchi, Youichi Chikugo, Hidekazu Tatezawa, Yutaro Tsuno, Kenichi Tanaka, Rikiya Takemasa
  • Publication number: 20220143715
    Abstract: An insert includes a base which includes a first surface, a second surface connecting to the first surface, and a cutting edge located on at least a part of a ridgeline of the first surface and the second surface. The first surface includes a plurality of grooves located at a position away from the ridgeline and extended at an angle of 20-90° relative to the ridgeline. The grooves are away from the ridgeline in a range of 40-700 ?m. A width W of the grooves is 50-700 ?m, and a depth D of the grooves is 20-700 ?m. Spacing S between the grooves adjacent to each other is 50-700 ?m. A cutting tool includes a holder, which has a length extending from a first end to a second end and includes a pocket located on a side of the first end, and the insert is located in the pocket.
    Type: Application
    Filed: March 12, 2020
    Publication date: May 12, 2022
    Inventor: Mitsuru HASEGAWA
  • Publication number: 20220126375
    Abstract: An insert includes a base. The base includes first and second surfaces, and a cutting edge on at least a part of a ridgeline of the first and second surfaces. The first surface includes a groove away from the ridgeline and at an angle ?1 of 20-90° relative to the ridgeline. The groove extends from a first end part closest to the cutting edge to a second end part most away from the cutting edge. The groove includes an opening and a bottom surface. An angle ?2 formed by the bottom surface and a raised surface extended from the bottom surface toward the first end part is 95-135°. A cutting tool includes a holder, which has a length extending from a first end to a second end and includes a pocket located on a side of the first end, and the insert located in the pocket.
    Type: Application
    Filed: March 12, 2020
    Publication date: April 28, 2022
    Inventor: Mitsuru HASEGAWA
  • Patent number: 11300906
    Abstract: A fixing device for fixing a toner image on a sheet includes a rotatable fixing belt; a heating roller wherein the belt is stretched and entrained around the heating roller to heat the belt; a pressing pad of resin material provided inside of the belt; a rotatable pressing member contacting an outer peripheral surface of the belt and pressing against the pad through the belt to form a nip configured to nip and feed the sheet; a supporting metal stay supporting the pad and including a planar bottom surface faced to the pad; and projected portions integrally molded with the pad and provided along a widthwise direction of the pad, the projected portions projecting and contacting to the bottom surface such that the pad is supported by the stay. A contact area between the projected portions and the bottom surface is not less than 5% and not more than 40% of the area of the bottom surface.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: April 12, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Rikiya Takemasa, Hidekazu Tatezawa, Yutaro Tsuno, Kenichi Tanaka, Youichi Chikugo, Mitsuru Hasegawa, Hiroki Kawai, Suguru Takeuchi, Ayano Ogata, Yasuharu Toratani
  • Patent number: 11300904
    Abstract: A fixing apparatus includes a heating roller including a plurality of halogen heaters whose number is three or more and a driving-force transmission member disposed on one end portion of the heating roller and configured to transmit rotational force that rotates the heating roller. The plurality of halogen heaters whose number is three or more includes at least one asymmetric halogen heater in which an amount of heat generated from one end side on which the driving-force transmission member is provided is larger than an amount of heat generated from another end side, and in which heat generation distribution is asymmetric with respect to a center of a heat generating portion in a longitudinal direction, and at least one symmetric halogen heater in which heat generation distribution is symmetric with respect to a center of a heat generating portion in a longitudinal direction, and the number of symmetric halogen heaters is larger than the number of asymmetric halogen heaters.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: April 12, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroki Kawai, Mitsuru Hasegawa, Ayano Ogata, Yasuharu Toratani
  • Patent number: 11294313
    Abstract: An image forming apparatus includes a heater, heating roller heated by the heater and a fixing belt heated by the heating roller. A thermistor detects a temperature of the fixing belt at an area where the belt is stretched by the heating roller. When a CPU receives a signal which instructs the stop of rotation of the fixing belt, the CPU continues rotation of the fixing belt until the detected temperature detected by the thermistor decreases a predetermined temperature in a case in which the detected temperature is higher than the predetermined temperature.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: April 5, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mitsuru Hasegawa, Hiroki Kawai, Yasuharu Toratani, Ayano Ogata
  • Patent number: 11281141
    Abstract: An image forming apparatus includes an endless rotatable belt, a rotary pressing member, a pressing member, a driving unit, a heating roller, a temperature detection member, and a control unit. The rotary pressing member is configured to form a nip portion between the rotary pressing member and the belt, the nip portion being a portion in which a toner image borne by a recording material is fixed to the recording material while the recording material is nipped and conveyed. The control unit is configured to control the driving unit such that the driving unit does not start to rotate the belt during a period of time for a preparatory operation if a temperature of the heating roller is higher than a predetermined temperature, wherein the preparatory operation is an operation performed for enabling image formation after an error or a jam is handled.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: March 22, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuharu Toratani, Mitsuru Hasegawa, Hiroki Kawai, Ayano Ogata
  • Patent number: 11269272
    Abstract: A fixing device includes a rotatable fixing belt, a pad, a rotatable pressing member, a pressing member driving source, an auxiliary driving roller, and a transmission mechanism for transmitting a driving force from the pressing member driving source to the auxiliary driving roller, wherein a peripheral speed of the auxiliary driving roller is faster than a peripheral speed of the pressing member, and a steering roller provided so as to stretch the fixing belt at the inner surface of the fixing belt in a position downstream of the auxiliary driving roller and upstream the pad with respect to a rotational direction of the fixing belt. The steering roller adjusts a position of the fixing belt with respect to a widthwise direction of the fixing belt by inclining the fixing belt so as to be positioned within a predetermined range.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: March 8, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidekazu Tatezawa, Youichi Chikugo, Rikiya Takemasa, Kenichi Tanaka, Yutaro Tsuno, Mitsuru Hasegawa, Suguru Takeuchi, Hiroki Kawai, Yasuharu Toratani, Ayano Ogata
  • Patent number: 11194275
    Abstract: A toner image fixing device include a fixing belt; a heating roller training the belt around; a pressing pad of resin material provided inside the belt; a rotatable pressing member contacting the belt and pressing against the pad through the belt to form a nip for nipping and feeding the sheet; a supporting stay supporting the pad and including a surface contacting the pad, one of the pad and the stay being provided with a projection, and the other being provided with a recess engaged with the projection at an engaging position; and a separation plate provided without contact to the belt at a position opposed to the pad downstream of the nip in the sheet feeding direction. A distance between the engaging position and a downstream end of the pad is 0-35% of a length of the pad measured along the feeding direction.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: December 7, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Rikiya Takemasa, Youichi Chikugo, Hidekazu Tatezawa, Kenichi Tanaka, Yutaro Tsuno, Mitsuru Hasegawa, Hiroki Kawai, Suguru Takeuchi, Ayano Ogata, Yasuharu Toratani
  • Publication number: 20210373471
    Abstract: An image forming apparatus included an endless rotatable belt, a rotary pressing member, a pressing member, a driving unit, a heating roller, a temperature detection member, and a control unit. The rotary pressing member is configured to form a nip portion between the rotary pressing member and the belt, the nip portion being a portion in which a toner image borne by a recording material is fixed to the recording material while the recording material is nipped and conveyed. The control unit is configured to control the driving unit such that the driving unit does not start to rotate the belt in a period of time for a preparatory operation if a temperature of the heating roller is higher than a predetermined temperature, wherein the preparatory operation is performed for enabling image formation after an error or a jam is handled.
    Type: Application
    Filed: May 18, 2021
    Publication date: December 2, 2021
    Inventors: Yasuharu Toratani, Mitsuru Hasegawa, Hiroki Kawai, Ayano Ogata
  • Publication number: 20210373468
    Abstract: A fixing apparatus includes a heating roller including a plurality of halogen heaters whose number is three or more, a driving-force transmission member disposed on one end portion of the heating roller and configured to transmit rotational force that rotates the heating roller. The plurality of halogen heaters whose number is three or more includes a halogen heater in which an amount of heat generated from one end side on which the driving-force transmission member is provided is larger than an amount of heat generated from another end side, and in which heat generation distribution is asymmetric with respect to a center of a heat generating portion in a longitudinal direction, and a halogen heater in which heat generation distribution is symmetric with respect to a center of a heat generating portion in a longitudinal direction, and the symmetric halogen heater is larger in number than the asymmetric halogen heater.
    Type: Application
    Filed: May 26, 2021
    Publication date: December 2, 2021
    Inventors: Hiroki Kawai, Mitsuru Hasegawa, Ayano Ogata, Yasuharu Toratani
  • Publication number: 20210302879
    Abstract: An image forming apparatus includes a heater, heating roller heated by the heater and a fixing belt heated by the heating roller. A thermistor detects a temperature of the fixing belt at an area where the belt is stretched by the heating roller. When a CPU receives a signal which instructs the stop of rotation of the fixing belt, the CPU continues rotation of the fixing belt until the detected temperature detected by the thermistor decreases a predetermined temperature in a case in which the detected temperature is higher than the predetermined temperature.
    Type: Application
    Filed: March 29, 2021
    Publication date: September 30, 2021
    Inventors: Mitsuru HASEGAWA, Hiroki KAWAI, Yasuharu TORATANI, Ayano OGATA
  • Publication number: 20210191298
    Abstract: A fixing device for fixing a toner image on a sheet includes a rotatable fixing belt; a heating roller training the belt around; a pressing pad of resin material provided inside of the belt; a rotatable pressing member contacting an outer peripheral surface of the belt and pressing against the pad through the belt to form a nip configured to nip and feed the sheet; a supporting metal stay supporting the pad and including a planar bottom surface faced to the pad; and projected portions integrally molded with the pad and provided along a widthwise direction of the pad, the projected portions projecting and contacting to the bottom surface such that the pad is supported by the stay. A contact area between the projections and the bottom surface is not less than 5% and not more than 40% of the area of the bottom surface.
    Type: Application
    Filed: December 16, 2020
    Publication date: June 24, 2021
    Inventors: Rikiya Takemasa, Hidekazu Tatezawa, Yutaro Tsuno, Kenichi Tanaka, Youichi Chikugo, Mitsuru Hasegawa, Hiroki Kawai, Suguru Takeuchi, Ayano Ogata, Yasuharu Toratani