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).
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Patent number: 10359715Abstract: 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: GrantFiled: January 23, 2018Date of Patent: July 23, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Takeharu Nakada, Tatsuya Kinukawa, Tomoo Akizuki, Masahiko Suzumi, Ryo Morihara, Yusuke Nakazono, Junichi Kubota, Takayuki Kanazawa
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Publication number: 20190071508Abstract: The present invention provides a pharmaceutical composition for cancer treatment comprising an antibody against CCR8.Type: ApplicationFiled: November 7, 2018Publication date: March 7, 2019Applicants: SHIONOGI & CO., LTD., OSAKA UNIVERSITYInventors: Tetsuya YOSHIDA, Yujiro KIDANI, Mitsunobu MATSUMOTO, Takayuki KANAZAWA, Satomi SHINONOME, Kanji HOJO, Naganari OHKURA, Shimon SAKAGUCHI, Atsushi TANAKA, Hisashi WADA, Atsunari KAWASHIMA, Norio NONOMURA
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Publication number: 20180341192Abstract: 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: ApplicationFiled: May 24, 2018Publication date: November 29, 2018Inventor: Takayuki Kanazawa
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Publication number: 20180210366Abstract: 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: ApplicationFiled: January 23, 2018Publication date: July 26, 2018Inventors: Takeharu Nakada, Tatsuya Kinukawa, Tomoo Akizuki, Masahiko Suzumi, Ryo Morihara, Yusuke Nakazono, Junichi Kubota, Takayuki Kanazawa
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Patent number: 10025265Abstract: A configuration in which an opening is covered with a plurality of partition members is provided, and timings of causing the partition members to move are differentiated, so that torque is reduced.Type: GrantFiled: April 5, 2017Date of Patent: July 17, 2018Assignee: Canon Kabushiki KaishaInventors: Kazuhisa Shida, Shunsuke Mizukoshi, Yuta Isobe, Takayuki Kanazawa, Makoto Tokudome
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Patent number: 10001726Abstract: Provided is a developer container, including: a frame body having an opening; a sealing member configured to seal the opening; an unsealing member configured to unseal the opening by moving the sealing member and accommodated inside the frame body; and a part of the sealing member peelably bonded to an outer peripheral edge of the opening on an opposite side of the unsealing member with respect to the opening.Type: GrantFiled: January 25, 2017Date of Patent: June 19, 2018Assignee: CANON KABUSHIKI KAISHAInventors: Takayuki Kanazawa, Kazuhisa Shida, Yuta Isobe, Shunsuke Mizukoshi, Nobuo Oshima
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Patent number: 9996032Abstract: The disclosed structure includes a belt-shaped conveying member configured to convey developer. The conveying member includes a partitioning portion, which is a partition for developer contained in a casing with respect to a conveying direction in which the developer is conveyed, wherein, when the developer container is new, a first developer amount which is an amount of the developer contained at an upstream side that is upstream of the partitioning portion in the conveying direction, is larger than a second developer amount which is an amount of the developer contained at a downstream side that is downstream of the partitioning portion in the conveying direction.Type: GrantFiled: March 31, 2017Date of Patent: June 12, 2018Assignee: Canon Kabushiki KaishaInventors: Shunsuke Mizukoshi, Kazuhisa Shida, Takayuki Kanazawa, Yuta Isobe, Makoto Tokudome
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Patent number: 9933726Abstract: A developer container includes a container, provided with an opening and configured to accommodate a developer; a sealing member configured to cover the opening; and an unsealing member configured to unseal the opening by moving the sealing member. The sealing member opposes the container at a central opposing portion positioned in a central side and at an end opposing portion positioned at an end side with respect to a longitudinal direction of the unsealing member. The sealing member and the container are bonded to each other at bonding portion which is at least a part of the central opposing portion. The bonding force at the bonding portion of the central opposing portion is larger than a bonding force between the sealing member and the container at the end opposing portion.Type: GrantFiled: March 13, 2017Date of Patent: April 3, 2018Assignee: CANON KABUSHIKI KAISHAInventors: Yuta Isobe, Kazuhisa Shida, Takayuki Kanazawa, Shunsuke Mizukoshi
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Publication number: 20170293256Abstract: A configuration in which an opening is covered with a plurality of partition members is provided, and timings of causing the partition members to move are differentiated, so that torque is reduced.Type: ApplicationFiled: April 5, 2017Publication date: October 12, 2017Inventors: Kazuhisa Shida, Shunsuke Mizukoshi, Yuta Isobe, Takayuki Kanazawa, Makoto Tokudome
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Publication number: 20170293243Abstract: The disclosed structure includes a belt-shaped conveying member configured to convey developer. The conveying member includes a partitioning portion, which is a partition for developer contained in a casing with respect to a conveying direction in which the developer is conveyed, wherein, when the developer container is new, a first developer amount which is an amount of the developer contained at an upstream side that is upstream of the partitioning portion in the conveying direction, is larger than a second developer amount which is an amount of the developer contained at a downstream side that is downstream of the partitioning portion in the conveying direction.Type: ApplicationFiled: March 31, 2017Publication date: October 12, 2017Inventors: Shunsuke Mizukoshi, Kazuhisa Shida, Takayuki Kanazawa, Yuta Isobe, Makoto Tokudome
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Publication number: 20170261886Abstract: A developer container includes a container, provided with an opening and configured to accommodate a developer; a sealing member configured to cover the opening; and an unsealing member configured to unseal the opening by moving the sealing member. The sealing member opposes the container at a central opposing portion positioned in a central side and at an end opposing portion positioned at an end side with respect to a longitudinal direction of the unsealing member. The sealing member and the container are bonded to each other at bonding portion which is at least a part of the central opposing portion. The bonding force at the bonding portion of the central opposing portion is larger than a bonding force between the sealing member and the container at the end opposing portion.Type: ApplicationFiled: March 13, 2017Publication date: September 14, 2017Inventors: Yuta Isobe, Kazuhisa Shida, Takayuki Kanazawa, Shunsuke Mizukoshi
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Publication number: 20170219963Abstract: Provided is a developer container, including: a frame body having an opening; a sealing member configured to seal the opening; an unsealing member configured to unseal the opening by moving the sealing member and accommodated inside the frame body; and a part of the sealing member peelably bonded to an outer peripheral edge of the opening on an opposite side of the unsealing member with respect to the opening.Type: ApplicationFiled: January 25, 2017Publication date: August 3, 2017Inventors: Takayuki Kanazawa, Kazuhisa Shida, Yuta Isobe, Shunsuke Mizukoshi, Nobuo Oshima
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Patent number: 9563148Abstract: An image forming apparatus includes a storage chamber configured to store developer, a plurality of sheet members disposed between a first electrode and a second electrode and disposed in the storage chamber, and a detecting portion configured to detect an output value relating to the capacitance between the first electrode and the second electrode. The amount of the developer is detected on the basis of the degree of deterioration of any one of the plurality of sheet members and the output value.Type: GrantFiled: November 6, 2015Date of Patent: February 7, 2017Assignee: Canon Kabushiki KaishaInventors: Takayuki Kanazawa, Takayuki Namiki
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Publication number: 20160131990Abstract: An image forming apparatus includes a storage chamber configured to store developer, a plurality of sheet members disposed between a first electrode and a second electrode and disposed in the storage chamber, and a detecting portion configured to detect an output value relating to the capacitance between the first electrode and the second electrode. The amount of the developer is detected on the basis of the degree of deterioration of any one of the plurality of sheet members and the output value.Type: ApplicationFiled: November 6, 2015Publication date: May 12, 2016Inventors: Takayuki Kanazawa, Takayuki Namiki
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Patent number: 9207581Abstract: A developer accommodating unit for accommodating a developer includes: an accommodating portion, provided with an opening, for accommodating the developer; a sealing member for sealing the opening; and an unsealing member rotatable for winding up the sealing member. The sealing member is peelable off from the accommodating portion to unseal the opening in a first unsealing direction and a second unsealing direction opposite to the first unsealing direction.Type: GrantFiled: June 2, 2014Date of Patent: December 8, 2015Assignee: Canon Kabushiki KaishaInventors: Koji Wada, Takashi Kase, Takayuki Kanazawa, Yusuke Usui, Masaki Furutani, Kojiro Yasui, Hiroomi Matsuzaki, Tetsuo Uesugi, Tatsuo Fujisaki, Masaaki Matsushita, Junichi Matsumura
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Patent number: 9134652Abstract: A developing device includes a developer carrying member, rotatable while carrying a developer, for supplying developer to an image bearing member, a developer supplying member, which is provided with a foam layer at its surface and is rotatable in contact with the developer carrying member, for supplying the developer to the developer carrying member, and a first gear for transmitting a driving force to the developer supplying member. The first gear is movable to a first position where the driving force is not transmitted to the developer supplying member and to a second position where the driving force is transmitted to the developer supplying member. During initial drive of the developer carrying member, the developer supplying member is rotated by a frictional force generated between the developer supplying member and the developer carrying member, with the first gear to be moved from the first position to the second position.Type: GrantFiled: August 13, 2012Date of Patent: September 15, 2015Assignee: CANON KABUSHIKI KAISHAInventors: Masanori Tanaka, Motoki Adachi, Kentaro Kawata, Takayuki Kanazawa, Shunsuke Mizukoshi
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Patent number: 9110433Abstract: An image forming apparatus includes a control unit that performs two types of stop operations in which an image bearing member is rotated or is not rotated after forming an image. The control unit selects the stop operation according to operation time of the image bearing member.Type: GrantFiled: March 14, 2014Date of Patent: August 18, 2015Assignee: Canon Kabushiki KaishaInventors: Takayuki Kanazawa, Kentaro Kawata, Takuya Kitamura, Yuji Kawaguchi
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Patent number: 9098005Abstract: An image forming apparatus includes a rotatable image bearing member configured to bear an electrostatic latent image, a plurality of development devices including a developer bearing member configured to bear a developer for developing the electrostatic latent image, a rotatable development device supporting member configured to support the plurality of development devices. The developer bearing member is configured to execute development while contacting the image bearing member at a development position via the developer, rotating in the same direction as rotating direction of the image bearing member at the development position, and rotating at a speed faster than a surface speed of the image bearing member.Type: GrantFiled: June 8, 2011Date of Patent: August 4, 2015Assignee: Canon Kabushiki KaishaInventors: Kentaro Kawata, Takuya Kitamura, Takayuki Kanazawa, Yuji Kawaguchi
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Patent number: 9091963Abstract: A developing device includes: a flexible container, provide with an opening, for accommodating the developer; a frame for accommodating the container; an urging member, rotatably provided inside the frame, for urging the container by rotation thereof to deform the container; and a developer carrying member for carrying the developer on its surface to feed the developer. A distance X from a rotation center of the urging member to the surface of the developer carrying member and a length T from the rotation center of the urging member to a free end thereof for urging the container satisfy a relationship of X<T. A shielding member for preventing contact of the urging member with the developer carrying member is provided between the rotation center of the urging member and the surface of the developer carrying member or in a neighborhood thereof.Type: GrantFiled: November 28, 2012Date of Patent: July 28, 2015Assignee: Canon Kabushiki KaishaInventors: Masaaki Matsushita, Tomonori Matsunaga, Shunsuke Mizukoshi, Kohei Matsuda, Jun Miura, Takayuki Kanazawa, Takashi Mukai
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Publication number: 20140363196Abstract: A developer accommodating unit for accommodating a developer includes: an accommodating portion, provided with an opening, for accommodating the developer; a sealing member for sealing the opening; and an unsealing member rotatable for winding up the sealing member. The sealing member is peelable off from the accommodating portion to unseal the opening in a first unsealing direction and a second unsealing direction opposite to the first unsealing direction.Type: ApplicationFiled: June 2, 2014Publication date: December 11, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Koji Wada, Takashi Kase, Takayuki Kanazawa, Yusuke Usui, Masaki Furutani, Kojiro Yasui, Hiroomi Matsuzaki, Tetsuo Uesugi, Tatsuo Fujisaki, Masaaki Matsushita, Junichi Matsumura