Patents by Inventor Masato Tanabe

Masato Tanabe 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: 9228906
    Abstract: A crystal oscillator (31) (Y-cut) has a temperature characteristic in which its oscillating frequency significantly changes with temperature, whereas a crystal oscillator (32) (AT-cut) has a temperature characteristic in which its oscillating frequency is stable with temperature. Crystal oscillators (31, 32) are cut from a raw material of the same type and configured to be substantially equal in shape, material, and size, and provide a combination of oscillation frequencies such that the frequency of a signal generated by a differential frequency circuit (35) will be less than or equal to 10 kHz within a measuring temperature range of 21 to 30° C. The frequency of a signal generated by differential frequency generating circuit (35) is output to a measurement apparatus main unit and a frequency counting circuit (15) measures the frequency of this signal by a reciprocal counting method to obtain at least eight or more significant digits.
    Type: Grant
    Filed: September 2, 2013
    Date of Patent: January 5, 2016
    Inventor: Masato Tanabe
  • Publication number: 20150277370
    Abstract: A process cartridge includes: a photosensitive drum; a rotatable developing roller for developing an electrostatic latent image formed on the photosensitive drum; a rotatable roller having a rotation shaft in a position deviated from an axis of the developing roller, for transmitting a driving force to the developing roller; a coupling member disposed at an end portion of the shaft of the developing roller; a driving force receiving portion, provided on the coupling member and movable in a direction crossing the shaft of the rotatable roller, for receiving a driving force to be transmitted to the developing roller; an urging member for urging the drive receiving portion in the direction crossing the shaft of the rotatable roller; a supporting portion for rotatably supporting the drive receiving portion so as to be movable together with the drive receiving portion toward the rotatable roller in the direction crossing the shaft of the rotatable roller; and an abutting portion for receiving the supporting portio
    Type: Application
    Filed: June 11, 2015
    Publication date: October 1, 2015
    Inventors: Hideki Maeshima, Masato Tanabe, Keisuke Nomura, Hiroki Shimizu
  • Patent number: 9110439
    Abstract: A cartridge detachably mountable to an apparatus body of an image forming apparatus, includes a grip member that is provided on the frame member for gripping the cartridge when the cartridge is mounted on or dismounted from the apparatus body, the grip member including a first molded member that is integrally molded with the frame member, and a second molded member that is integrally molded on the first molded member with a second resin after the molding of the first molded member.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: August 18, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiro Fujiwara, Susumu Nittani, Masato Tanabe
  • Patent number: 9075387
    Abstract: A cartridge includes: a memory portion; a substrate having the memory portion and an electrical contact; a support portion for supporting the substrate with the electrical contact being exposed; a first movement regulation portion configured to regulate the movement of the substrate ; and a second movement regulation portion configured to regulate the movement of the substrate, wherein the movement regulation direction in which the movement of the substrate is regulated by the second movement regulation portion is the same as the movement regulation direction in which the movement of the substrate is regulated by the first movement regulation portion, and wherein the movement regulation distance that the movement of the substrate is regulated by the second movement regulation portion is shorter than or equal to the movement regulation distance that the movement of the substrate is regulated by the first movement regulation portion.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: July 7, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Tanabe, Hideki Maeshima, Hideki Kakuta
  • Patent number: 8985571
    Abstract: A sheet feeding apparatus that can prevent changes at the time of mounting a sheet cassette, and deformation and changes of the sheets after the sheet cassette is mounted regardless of a sheet size are provided. A movable side regulating plate provided in a frame, regulates positions of width direction side ends of sheets is provided with sheet pressing portions and that press the side ends of the sheets to press the sheets against a fixed side regulating plate in a biasing manner. An indented configuration against which, when short sheets are pressed by the sheet pressing portion are stacked on a sheet stacking plate, upstream ends of the sheets do not abut is formed upward from a bottom end of the sheet pressing portion to a predetermined dimension at a sheet feeding direction center of the sheet pressing portion.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: March 24, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Ueda, Shuji Nishitani, Masato Tanabe
  • Publication number: 20150023388
    Abstract: A crystal oscillator (31) (Y-cut) has a temperature characteristic in which its oscillating frequency significantly changes with temperature, whereas a crystal oscillator (32) (AT-cut) has a temperature characteristic in which its oscillating frequency is stable with temperature. Crystal oscillators (31, 32) are cut from a raw material of the same type and configured to be substantially equal in shape, material, and size, and provide a combination of oscillation frequencies such that the frequency of a signal generated by a differential frequency circuit (35) will be less than or equal to 10 kHz within a measuring temperature range of 21 to 30° C. The frequency of a signal generated by differential frequency generating circuit (35) is output to a measurement apparatus main unit and a frequency counting circuit (15) measures the frequency of this signal by a reciprocal counting method to obtain at least eight or more significant digits.
    Type: Application
    Filed: September 2, 2013
    Publication date: January 22, 2015
    Inventor: Masato Tanabe
  • Patent number: 8886109
    Abstract: A cleaning unit including: frame abutment portions each including a first abutment portion and a second abutment portion; support portions each including a first support portion which abuts against the first abutment portion, and a second support portion which abuts against the second abutment portion so as to support a cleaning member in a pivotable manner about the frame abutment portions as a pivot axis; and an urging member configured to urge the cleaning member in a direction in which an elastic member is brought into contact with a photosensitive drum by pivoting the cleaning member.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: November 11, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuo Chadani, Akihiro Fujiwara, Susumu Nittani, Masato Tanabe, Hideki Kakuta, Keisuke Nomura
  • Publication number: 20140310530
    Abstract: Each of ECUs counts the number of messages transmitted for each of CAN IDs. A transmission node that has transmitted a main message produces an MAC from a data field and the CAN ID in the main message and a counter value corresponding to the CAN ID, and transmits the MAC as an MAC message. A reception node that has received the main message produces an MAC from the data field and the CAN ID contained in the main message and the counter value corresponding to the CAN ID, and determines whether the MAC matches the MAC contained in the MAC message. By so doing, verification whether the main message is valid or not can be made. According to this configuration, message authentication by the MAC can be made without changing a CAN protocol.
    Type: Application
    Filed: October 30, 2012
    Publication date: October 16, 2014
    Inventors: Hisashi Oguma, Tsutomu Matsumoto, Masato Hata, Masato Tanabe, Katsunari Yoshioka, Kazuomi Oishi
  • Publication number: 20140169829
    Abstract: A process cartridge for an image forming apparatus includes a drum unit supporing a photosensitive drum; a developing roller; a driving roller for driving the roller; a drive receiving portion; a developing unit supporting the developing roller and the driving roller; and a connecting portion connecting the drum unit and the developing unit, the connecting portion being disposed below the driving roller. The developing unit is movable relative to the drum unit by rotating about the connecting portion between a contacting position in which the drum and the developing roller contact each other and a spacing position in which the drum and the developing roller are spaced from each other. A direction of the receiving portion is opposite to that of the developing roller, and is the same as athe developing unit rotation from the spacing position toward the contacting position.
    Type: Application
    Filed: December 12, 2013
    Publication date: June 19, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hideki Maeshima, Masato Tanabe, Keisuke Nomura, Hiroki Shimizu
  • Publication number: 20140086627
    Abstract: A cartridge for an image forming apparatus including a movable member is provided with a first engaging portion and a second engaging portion movable between a first position and a second position, the cartridge includes a first engaged portion engageable with the first engaging portion; and a second engaged portion engageable with the second engaging portion, wherein by the first engaged portion being engaged with the first engaging portion in the process of mounting, the movable member is moved from the first position to the second position to permit the second engaged to pass the second engaging portion in a mounting direction.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 27, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masato Tanabe, Kazuo Chadani, Yasunori Toriyama, Sadaaki Tani, Yuuki Nakamura
  • Publication number: 20140086629
    Abstract: A cartridge detachably mountable to an apparatus body of an image forming apparatus, includes a grip member that is provided on the frame member for gripping the cartridge when the cartridge is mounted on or dismounted from the apparatus body, the grip member including a first molded member that is integrally molded with the frame member, and a second molded member that is integrally molded on the first molded member with a second resin after the molding of the first molded member.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 27, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Akihiro Fujiwara, Susumu Nittani, Masato Tanabe
  • Publication number: 20140086597
    Abstract: A cartridge includes: a memory portion; a substrate having the memory portion and an electrical contact; a support portion for supporting the substrate with the electrical contact being exposed; a first movement regulation portion configured to regulate the movement of the substrate ; and a second movement regulation portion configured to regulate the movement of the substrate, wherein the movement regulation direction in which the movement of the substrate is regulated by the second movement regulation portion is the same as the movement regulation direction in which the movement of the substrate is regulated by the first movement regulation portion, and wherein the movement regulation distance that the movement of the substrate is regulated by the second movement regulation portion is shorter than or equal to the movement regulation distance that the movement of the substrate is regulated by the first movement regulation portion.
    Type: Application
    Filed: September 24, 2013
    Publication date: March 27, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masato Tanabe, Hideki Maeshima, Hideki Kakuta
  • Publication number: 20130315621
    Abstract: A process cartridge detachable to an image forming apparatus main body includes an image bearing member, a developer bearing member, a developing frame member configured to support the developer bearing member and to be capable of assuming an abutting state and a separating state, and a force receiving portion configured to allow the developing frame member to enter the separating state by being pressed by a pressing portion, in which the force receiving portion includes a first portion to abut on the pressing portion and to extend along the inserting direction of the process cartridge, and a second portion provided on each of an upstream and downstream side of the first portion in the inserting direction, extending from the first portion in a direction crossing the inserting direction, and to abut on the pressing portion, and the force receiving portion has a space formed between the two second portions.
    Type: Application
    Filed: May 23, 2013
    Publication date: November 28, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yasunori Toriyama, Masato Tanabe, Keisuke Nomura
  • Publication number: 20130287439
    Abstract: A cleaning unit including: frame abutment portions each including a first abutment portion and a second abutment portion; support portions each including a first support portion which abuts against the first abutment portion, and a second support portion which abuts against the second abutment portion so as to support a cleaning member in a pivotable manner about the frame abutment portions as a pivot axis; and an urging member configured to urge the cleaning member in a direction in which an elastic member is brought into contact with a photosensitive drum by pivoting the cleaning member.
    Type: Application
    Filed: April 15, 2013
    Publication date: October 31, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazuo Chadani, Akihiro Fujiwara, Susumu Nittani, Masato Tanabe, Hideki Kakuta, Keisuke Nomura
  • Patent number: 8448940
    Abstract: A movable side regulating plate is provided on a frame body. The movable side regulating plate regulates side edges in a width direction of sheets stacked on a sheet stacking plate, and is movable in the width direction. A sheet pressing portion configured to press the side edges of the sheets and press the sheets onto a stationary side regulating plate is provided on the movable side regulating plate. The sheet pressing portion has a relief shape for reducing a pressing force exerted on the sheets when an amount of the sheets stacked on the sheet stacking plate becomes equal to or smaller than a predetermined amount. The relief shape is formed so that a downstream edge in a sheet feeding direction of a lower surface is located higher than an upstream edge in the sheet feeding direction of an upper surface.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: May 28, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Ueda, Shuji Nishitani, Kazushi Nishikata, Masato Tanabe, Satoshi Tsuda
  • Patent number: 8317189
    Abstract: A movable side regulating plate is provided on a frame body. The movable side regulating plate regulates side edges in a width direction of sheets stacked on a sheet stacking plate, and is movable in the width direction. A sheet pressing portion configured to press the side edges of the sheets and press the sheets onto a stationary side regulating plate is provided on the movable side regulating plate. The sheet pressing portion has a relief shape for reducing a pressing force exerted on the sheets when an amount of the sheets stacked on the sheet stacking plate becomes equal to or smaller than a predetermined amount. The relief shape is formed so that a downstream edge in a sheet feeding direction of a lower surface is located higher than an upstream edge in the sheet feeding direction of an upper surface.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: November 27, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Ueda, Shuji Nishitani, Kazushi Nishitaka, Masato Tanabe, Satoshi Tsuda
  • Patent number: 8301054
    Abstract: A process cartridge detachably is mountable to a main assembly of the apparatus of an image forming apparatus including an urging member and a positioning portion. The cartridge includes a photosensitive drum; a positionable portion positioning the cartridge by engaging the positioning portion when the cartridge is mounted to the apparatus; first and second urgable portions being urged respectively, by first and second urging portions of the urging member to urge the positionable portion to the positioning portion during cartridge mounting; and an electrical contact, provided between the first and second urgable portions with respect to a horizontal direction crossing an axis of the drum, for connecting electrically to an electrical contact portion in the urging member, when the cartridge is mounted to the apparatus.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: October 30, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Tanabe, Susumu Nittani, Shinjiro Toba, Tomio Noguchi
  • Publication number: 20120252773
    Abstract: A method is provided for treating a patient with a medical condition that involves angiogenesis or HIF-1 overexpression with a compound having the structure of formula (I) wherein Z, x, y, and R1 through R11 are as defined herein.
    Type: Application
    Filed: April 26, 2012
    Publication date: October 4, 2012
    Inventors: Khalid Amin, Joy M. Calaoagan, Wan-Ru Chao, Peter D. Hobbs, Keith R. Laderoute, Richard H. Peters, Masato Tanabe
  • Publication number: 20120119434
    Abstract: A sheet feeding apparatus that can prevent changes at the time of mounting a sheet cassette, and deformation and changes of the sheets after the sheet cassette is mounted regardless of a sheet size are provided. A movable side regulating plate provided in a frame, regulates positions of width direction side ends of sheets is provided with sheet pressing portions and that press the side ends of the sheets to press the sheets against a fixed side regulating plate in a biasing manner. An indented configuration against which, when short sheets are pressed by the sheet pressing portion are stacked on a sheet stacking plate, upstream ends of the sheets do not abut is formed upward from a bottom end of the sheet pressing portion to a predetermined dimension at a sheet feeding direction center of the sheet pressing portion.
    Type: Application
    Filed: November 8, 2011
    Publication date: May 17, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinichi Ueda, Shuji Nishitani, Masato Tanabe
  • Publication number: 20120061908
    Abstract: A movable side regulating plate is provided on a frame body. The movable side regulating plate regulates side edges in a width direction of sheets stacked on a sheet stacking plate, and is movable in the width direction. A sheet pressing portion configured to press the side edges of the sheets and press the sheets onto a stationary side regulating plate is provided on the movable side regulating plate. The sheet pressing portion has a relief shape for reducing a pressing force exerted on the sheets when an amount of the sheets stacked on the sheet stacking plate becomes equal to or smaller than a predetermined amount. The relief shape is formed so that a downstream edge in a sheet feeding direction of a lower surface is located higher than an upstream edge in the sheet feeding direction of an upper surface.
    Type: Application
    Filed: August 5, 2011
    Publication date: March 15, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinichi Ueda, Shuji Nishitani, Kazushi Nishikata, Masato Tanabe, Satoshi Tsuda