Patents by Inventor Koki Watanabe

Koki Watanabe 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).

  • Cleaning apparatus and image forming apparatus
    Patent number: 6801747
    Abstract: A cleaning device includes a cleaning member for cleaning a surface of an image bearing member while it is moving, a holding member for holding the cleaning member, a vibrating member which per se is vibratable, and a controller for controlling operation of the vibrating member. The holding member is movable toward and away from the image bearing member, the vibrating member is held on the holding member, and the controller actuates the vibrating member upon stoppage of movement of the image bearing member.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: October 5, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keizo Ogara, Jun Asai, Koki Watanabe
  • Image forming apparatus
    Patent number: 6801726
    Abstract: In an image forming apparatus provided with a stripping device for stripping a sheet from a photosensitive member, a fan for sucking the sheet, and a duct for connecting the stripping device and the fan together, the fan is started when an operation signal detector for detecting an electrical signal by a predetermined operation in preparation for the start of a copy job detects the electrical signal.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: October 5, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiro Shimizu, Koki Watanabe
  • Cleaning device and image forming apparatus provided with same
    Publication number: 20040109712
    Abstract: A cleaning device comprising a cleaning member contactable to a moving image bearing member to clean a surface of the image bearing member; holding means for holding the cleaning member; vibrating means which is vibratable; wherein the holding means this movable toward and away from the image bearing member, and wherein the vibrating means is supported on the holding means.
    Type: Application
    Filed: December 1, 2003
    Publication date: June 10, 2004
    Applicant: Canon Kabushiki Kaisha
    Inventors: Kazuhumi Muto, Jun Asai, Koki Watanabe, Keizo Ogara
  • Cleaning device and image forming apparatus provided with same
    Patent number: 6694122
    Abstract: A cleaning device includes a cleaning member, which is contactable to a moving image bearing member to clean a surface of the image bearing member; a holder holds the cleaning member; and a vibrator. The holder is movable in a direction substantially perpendicular to a surface of the image bearing member. The vibrating means is supported by the holder.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: February 17, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhumi Muto, Jun Asai, Koki Watanabe, Keizo Ogara
  • Non-volatile memory device with plurality of threshold voltage distributions
    Patent number: 6519184
    Abstract: In a verify operation after a write or erase to check whether a memory cell threshold voltage is contained in a predetermined threshold voltage distribution, verify voltage is changed in three stages or more in a direction to mitigate the decision condition. This prevents non-convergence of write and erase operation and can complete the write or erase in a short time.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: February 11, 2003
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Toshihiro Tanaka, Hiroyuki Tanikawa, Masayoshi Nakano, Norio Oza, Koki Watanabe, Yutaka Shinagawa
  • Image forming apparatus
    Publication number: 20030021610
    Abstract: In an image forming apparatus provided with a stripping device for stripping a sheet from a photosensitive member, a fan for sucking the sheet, and a duct for connecting the stripping device and the fan together, the fan is started when an operation signal detector for detecting an electrical signal by a predetermined operation in preparation for the start of a copy job detects the electrical signal.
    Type: Application
    Filed: July 22, 2002
    Publication date: January 30, 2003
    Applicant: Canon Kabushiki Kaisha
    Inventors: Akihiro Shimizu, Koki Watanabe
  • Cleaning apparatus and image forming apparatus
    Publication number: 20030021618
    Abstract: A cleaning device includes a cleaning member for cleaning a surface of an image bearing member while it is moving; holding means for holding the cleaning member; vibrating means which per se is vibratable; control means for controlling operation of the vibrating means; wherein the holding means is movable toward and away from the image bearing member; the vibrating means is held on the holding means; and the control means actuates the vibrating means upon stop of movement of the image bearing member.
    Type: Application
    Filed: July 25, 2002
    Publication date: January 30, 2003
    Applicant: Canon Kabushiki Kaisha
    Inventors: Keizo Ogara, Jun Asai, Koki Watanabe
  • Cleaning device and image forming apparatus provided with same
    Publication number: 20020181981
    Abstract: A cleaning device comprising a cleaning member contactable to a moving image bearing member to clean a surface of the image bearing member; holding means for holding the cleaning member; vibrating means which is vibratable; wherein the holding means this movable toward and away from the image bearing member, and wherein the vibrating means is supported on the holding means.
    Type: Application
    Filed: March 12, 2002
    Publication date: December 5, 2002
    Applicant: Canon Kabushiki Kaisha
    Inventors: Kazuhumi Muto, Jun Asai, Koki Watanabe, Keizo Ogara
  • Non-volatile memory device with plurality of threshold voltage distributions
    Publication number: 20020154545
    Abstract: In a verify operation after a write or erase to check whether a memory cell threshold voltage is contained in a predetermined threshold voltage distribution, verify voltage is changed in three stages or more in a direction to mitigate the decision condition. This prevents non-convergence of write and erase operation and can complete the write or erase in a short time.
    Type: Application
    Filed: February 26, 2002
    Publication date: October 24, 2002
    Applicant: Hitachi, Ltd.
    Inventors: Toshihiro Tanaka, Hiroyuki Tanikawa, Masayoshi Nakano, Norio Oza, Koki Watanabe, Yutaka Shinagawa