Patents by Inventor Takayuki Kanazawa

Takayuki Kanazawa 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: 11860566
    Abstract: An image forming apparatus includes a rotatable image bearing member, a developing member, a transfer member, and a brush contacting a surface of the image bearing member in a contact portion downstream of a transfer portion and upstream of a developing portion with respect to a rotational direction of the image bearing member. The toner which is not transferred onto a toner image receiving member is collected by the developing member. In a charging series, the toner is positioned on the same side as a normal charge polarity of the toner relative to the brush. In the contact portion, a maximum value of a contact pressure of 0.7 gf/mm2 or more and 3.5 gf/mm2 or less, a maximum contact area ratio is 18% or more and 74% or less, and a Clark-Evans index of the brush is 1 or more.
    Type: Grant
    Filed: December 15, 2022
    Date of Patent: January 2, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Kanazawa, Nobuo Oshima, Takayoshi Kihara, Kuniaki Tamagaki, Shuhei Tokiwa, Taichi Sato
  • Publication number: 20230195026
    Abstract: An image forming apparatus includes a rotatable image bearing member, a developing member, a transfer member, and a brush contacting a surface of the image bearing member in a contact portion downstream of a transfer portion and upstream of a developing portion with respect to a rotational direction of the image bearing member. The toner which is not transferred onto a toner image receiving member is collected by the developing member. In a charging series, the toner is positioned on the same side as a normal charge polarity of the toner relative to the brush. In the contact portion, a maximum value of a contact pressure of 0.7 gf/mm2 or more and 3.5 gf/mm2 or less, a maximum contact area ratio is 18% or more and 74% or less, and a Clark-Evans index of the brush is 1 or more.
    Type: Application
    Filed: December 15, 2022
    Publication date: June 22, 2023
    Inventors: Takayuki Kanazawa, Nobuo Oshima, Takayoshi Kihara, Kuniaki Tamagaki, Shuhei Tokiwa, Taichi Sato
  • Publication number: 20230125722
    Abstract: An image forming apparatus includes a rotatable image bearing member, a charging member, a developing member, a transfer member, an exposure unit, and a controller. The controller executes a preparatory operation in which before an image forming operation, rotation of the image bearing member is started and a charging voltage and a developing voltage are increased stepwise. In the preparatory operation, the controller carries out control so as to start application of the charging voltage at a voltage value not less than a discharge start voltage of the charging member before a surface region of the image bearing member positioned in a developing portion at a time of a start of the rotation of the image bearing member reaches a charging portion in a state which a surface of the image bearing member is exposed to light by the exposure unit.
    Type: Application
    Filed: October 19, 2022
    Publication date: April 27, 2023
    Inventors: Shuhei Tokiwa, Takayoshi Kihara, Takayuki Kanazawa, Taichi Sato
  • Publication number: 20220177300
    Abstract: The present disclosure provides a method for producing a microchannel device, which can form a channel that has high hydrophobicity, high solvent resistance as well, and also resistance to heat and damage, on demand with high accuracy, and produces the microchannel device at a low cost, while having high productivity. The method for producing a microchannel device includes: forming a channel pattern from a hydrophobic resin on a porous substrate by an electrophotographic method; melting the channel pattern by heat to allow the channel pattern to permeate into the porous substrate, thereby forming a channel in the inside of the porous substrate.
    Type: Application
    Filed: February 22, 2022
    Publication date: June 9, 2022
    Inventors: Takeshi Yamamoto, Jun Miura, Keiji Miyazaki, Hiroki Tanaka, Makoto Fukatsu, Akihisa Matsukawa, Takayuki Kanazawa, Keigo Mizusawa, Masanori Seki, Masanori Tanaka
  • Publication number: 20220168731
    Abstract: Provided is a microchannel device, which has high hydrophobicity, high mechanical strength, and safety and also has high solvent resistance, and thus has wider applicability. The microchannel device includes a porous substrate having formed therein channel walls each containing a cyclic olefin copolymer that is a copolymer of an alkene and a cyclic olefin.
    Type: Application
    Filed: February 17, 2022
    Publication date: June 2, 2022
    Inventors: Takeshi Yamamoto, Hiroki Tanaka, Jun Miura, Keiji Miyazaki, Makoto Fukatsu, Akihisa Matsukawa, Takayuki Kanazawa, Keigo Mizusawa, Masanori Seki, Masanori Tanaka
  • Publication number: 20210115148
    Abstract: The present invention provides a pharmaceutical composition for cancer treatment comprising an antibody against CCR8.
    Type: Application
    Filed: December 28, 2020
    Publication date: April 22, 2021
    Applicants: Shionogi & Co., Ltd., Osaka University
    Inventors: Tetsuya Yoshida, Yujiro Kidani, Mitsunobu Matsumoto, Takayuki Kanazawa, Satomi Shinonome, Kanji Hojo, Naganari Ohkura, Shimon Sakaguchi, Atsushi Tanaka, Hisashi Wada, Atsunari Kawashima, Norio Nonomura
  • Publication number: 20210047421
    Abstract: The present invention provides a pharmaceutical composition for cancer treatment comprising an antibody against CCR8.
    Type: Application
    Filed: October 30, 2020
    Publication date: February 18, 2021
    Applicants: Shionogi & Co., Ltd., Osaka University
    Inventors: Tetsuya Yoshida, Yujiro Kidani, Mitsunobu Matsumoto, Takayuki Kanazawa, Satomi Shinonome, Kanji Hojo, Naganari Ohkura, Shimon Sakaguchi, Atsushi Tanaka, Hisashi Wada, Atsunari Kawashima, Norio Nonomura
  • Patent number: 10921741
    Abstract: In an image forming apparatus of a direct transfer system, when in a region where a transfer nip portion of a photosensitive drum is formed, a region in which the toner image can be formed is defined as a first region, and a region where the recording medium does not pass while the recording medium is conveyed by the transfer nip portion is defined as a second region, in forming the toner image on the recording medium, the photosensitive drum enters the transfer nip portion in a state where the second region of the photosensitive drum includes a region in which an absolute value of a surface potential is smaller than an absolute value of a surface potential of a region in which the toner image is not formed in the first region.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: February 16, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Shindo, Takayuki Kanazawa
  • Patent number: 10871743
    Abstract: A cleaning device, including: a cleaning frame; a cleaning member having one end and the other end, an image bearing member being capable of rotating and bearing a developer image formed of a developer so as to remove the developer remaining on the image bearing member after transfer of the developer image from the image bearing member; and a sheet member having flexibility and having one end and the other end; wherein a work function W (D) of the developer and a work function W (S) of the sheet member satisfy 0?W(D)?W(S)?0.23 and the developer includes inorganic particles, and at least one kind of the inorganic particles has an average primary particle diameter of 50 nm or larger.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: December 22, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shuhei Tokiwa, Takayuki Kanazawa
  • Patent number: 10852686
    Abstract: A cleaning device has: a cleaning frame; a cleaning member which, after transfer through contact with an image bearing member, removes a developer remaining on the image bearing member; and a sheet member having flexibility and coming into contact with the image bearing member at an upstream side of a contact position between the cleaning member and the image bearing member in the rotation direction of the image bearing member. An external additive is an inorganic salt having a charging polarity on the positive side with respect to the developer, and work functions ?(S), ?(A), ?(T) of the sheet member, the external additive and the developer satisfy 0?|?(A)??(S)|<0.57; and ?(A)<?(T).
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: December 1, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takayuki Kanazawa, Shuhei Tokiwa
  • Publication number: 20200232973
    Abstract: The disclosure provides a method of measuring an efficacy of a drug composition for cancer and a method for treating a cancer by administering to a subject an effective amount of a pharmaceutical composition having a polypeptide that binds to a peptide produced by cDNA of GenBank ACC No. NM_005201.3 or NM_007720.2.
    Type: Application
    Filed: January 2, 2020
    Publication date: July 23, 2020
    Applicants: Shionogi & Co., Ltd., Osaka University
    Inventors: Tetsuya Yoshida, Yujiro Kidani, Mitsunobu Matsumoto, Takayuki Kanazawa, Satomi Shinonome, Kanji Hojo, Naganari Ohkura, Shimon Sakaguchi, Atsushi Tanaka, Hisashi Wada, Atsunari Kawashima, Norio Nonomura
  • Publication number: 20200222463
    Abstract: The disclosure provides a pharmaceutical composition with a polypeptide that binds to a peptide produced by cDNA of GenBank ACC No. NM_005201.3 or NM_007720.2, and methods of use thereof.
    Type: Application
    Filed: January 2, 2020
    Publication date: July 16, 2020
    Applicants: Shionogi & Co., Ltd., Osaka University
    Inventors: Tetsuya Yoshida, Yujiro Kidani, Mitsunobu Matsumoto, Takayuki Kanazawa, Satomi Shinonome, Kanji Hojo, Naganari Ohkura, Shimon Sakaguchi, Atsushi Tanaka, Hisashi Wada, Atsunari Kawashima, Norio Nonomura
  • Publication number: 20200201237
    Abstract: A cleaning device has: a cleaning frame; a cleaning member which, after transfer through contact with an image bearing member, removes a developer remaining on the image bearing member; and a sheet member having flexibility and coming into contact with the image bearing member at an upstream side of a contact position between the cleaning member and the image bearing member in the rotation direction of the image bearing member. The external additive is an inorganic salt having a charging polarity on the positive side with respect to the developer, and work functions ?(S), ?(A), ?(T) of the recovery member, the external additive and the developer satisfy 0?|?(A)??(S)|<0.57; and ?(A)<?(T).
    Type: Application
    Filed: December 16, 2019
    Publication date: June 25, 2020
    Inventors: Takayuki Kanazawa, Shuhei Tokiwa
  • Publication number: 20200201243
    Abstract: A cleaning device, including: a cleaning frame; a cleaning member having one end and the other end, the image bearing member being capable of rotating and bearing a developer image formed of a developer so as to remove the developer remaining on the image bearing member after transfer of the developer image from the image bearing member; and a sheet member having flexibility and having one end and the other end; wherein a work function W (D) of the developer and a work function W (S) of the sheet member satisfy 0?W(D)?W(S)?0.23 and the developer includes inorganic particles, and at least one kind of the inorganic particles has an average primary particle diameter of 50 nm or larger.
    Type: Application
    Filed: December 16, 2019
    Publication date: June 25, 2020
    Inventors: Shuhei Tokiwa, Takayuki Kanazawa
  • Patent number: 10550191
    Abstract: The present invention provides a pharmaceutical composition for cancer treatment comprising an antibody against CCR8.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: February 4, 2020
    Assignees: Shionogi & Co., Ltd., Osaka University
    Inventors: Tetsuya Yoshida, Yujiro Kidani, Mitsunobu Matsumoto, Takayuki Kanazawa, Satomi Shinonome, Kanji Hojo, Naganari Ohkura, Shimon Sakaguchi, Atsushi Tanaka, Hisashi Wada, Atsunari Kawashima, Norio Nonomura
  • Publication number: 20190339639
    Abstract: In an image forming apparatus of a direct transfer system, when in a region where a transfer nip portion of a photosensitive drum is formed, a region in which the toner image can be formed is defined as a first region, and a region where the recording medium does not pass while the recording medium is conveyed by the transfer nip portion is defined as a second region, in forming the toner image on the recording medium, the photosensitive drum enters the transfer nip portion in a state where the second region of the photosensitive drum includes a region in which an absolute value of a surface potential is smaller than an absolute value of a surface potential of a region in which the toner image is not formed in the first region.
    Type: Application
    Filed: April 30, 2019
    Publication date: November 7, 2019
    Inventors: Kenji Shindo, Takayuki Kanazawa
  • Patent number: 10444656
    Abstract: An image forming apparatus includes an image bearing member, a charging member, a charging voltage source, an electrostatic image forming portion, a developing member, a developing voltage source, a transfer portion, a cleaning member, and a controller. The controller effects control so that a peak-to-peak voltage of an AC component of a charging voltage satisfying the following relationship is applied to the charging member to execute a toner supplying operation: 2Vth (V)?Vpp1 (V)?(2Vth+200) (V), where a discharge start voltage of a DC component of a charging voltage between the image bearing member and the charging member is Vth (V), and the peak-to-peak voltage of the AC component applied during execution of the toner supplying operation is Vpp1 (V). A peak-to-peak voltage of the AC component applied during image formation is larger than the peak-to-peak voltage Vpp1 (V).
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: October 15, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takayuki Kanazawa
  • Patent number: 10359715
    Abstract: An image forming apparatus including: a charging member configured to charge a photosensitive member at a charging portion by a charging voltage in which an alternate-current voltage is superimposed on a direct-current voltage; a transfer member configured to transfer a toner image formed on the photosensitive member to a recording material at a transfer portion; and a controller configured to control the charging voltage, a predetermined area of the photosensitive member passing through the transfer portion during a trailing edge of the recording material passing through the transfer portion, wherein the controller controls a value of a peak-to-peak voltage of the alternate-current voltage when the predetermined area passes through the charging portion to be larger than a value of a peak-to-peak voltage when an area that becomes the image area other than the predetermined area passes through the charging portion.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: July 23, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takeharu Nakada, Tatsuya Kinukawa, Tomoo Akizuki, Masahiko Suzumi, Ryo Morihara, Yusuke Nakazono, Junichi Kubota, Takayuki Kanazawa
  • Publication number: 20190071508
    Abstract: The present invention provides a pharmaceutical composition for cancer treatment comprising an antibody against CCR8.
    Type: Application
    Filed: November 7, 2018
    Publication date: March 7, 2019
    Applicants: SHIONOGI & CO., LTD., OSAKA UNIVERSITY
    Inventors: Tetsuya YOSHIDA, Yujiro KIDANI, Mitsunobu MATSUMOTO, Takayuki KANAZAWA, Satomi SHINONOME, Kanji HOJO, Naganari OHKURA, Shimon SAKAGUCHI, Atsushi TANAKA, Hisashi WADA, Atsunari KAWASHIMA, Norio NONOMURA
  • Publication number: 20180341192
    Abstract: An image forming apparatus includes an image bearing member, a charging member, a charging voltage source, an electrostatic image forming portion, a developing member, a developing voltage source, a transfer portion, a cleaning member, and a controller. The controller effects control so that a peak-to-peak voltage of an AC component of a charging voltage satisfying the following relationship is applied to the charging member to execute a toner supplying operation: 2Vth (V)?Vpp1 (V)?(2Vth+200) (V), where a discharge start voltage of a DC component of a charging voltage between the image bearing member and the charging member is Vth (V), and the peak-to-peak voltage of the AC component applied during execution of the toner supplying operation is Vpp1 (V). A peak-to-peak voltage of the AC component applied during image formation is larger than the peak-to-peak voltage Vpp1 (V).
    Type: Application
    Filed: May 24, 2018
    Publication date: November 29, 2018
    Inventor: Takayuki Kanazawa