Patents by Inventor Hirofumi Tsuji

Hirofumi Tsuji 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: 8744317
    Abstract: An electrification apparatus includes: an electrification roller that rotates touching An image carrier to electrify a surface of the image carrier; a support member that by a bearing portion, supports rotatably a rotation shaft which is disposed at an end portion in a shaft direction of the electrification roller; and a cover member that is disposed on the rotation shaft and covers a portion of the rotation shaft which is near the bearing portion.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: June 3, 2014
    Assignee: Kyocera Document Solutions Inc.
    Inventor: Hirofumi Tsuji
  • Publication number: 20140064752
    Abstract: A driving device includes a motor, a pulley, a metal belt, a first unit, a second unit, a biasing member and a detector. The motor includes a drive shaft. The pulley includes an output shaft extending in parallel to the drive shaft. The pulley is rotatably supported on the first unit with the output shaft as a rotary shaft and the circumferential surface is arranged at a distance from the drive shaft in a radial direction of the rotation. The second unit supports the motor and is slidable relative to the first unit. The biasing member biases the second unit in a direction to move the drive shaft away from the output shaft in a state where the metal belt is mounted between the drive shaft and the pulley. The detector detects a change in an inter-axial distance between the drive shaft and the output shaft.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 6, 2014
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Hirofumi Tsuji, Akihiro Yamaguchi
  • Patent number: 8543049
    Abstract: A cleaning apparatus is provided with a cleaning roller that is positioned so as to be in contact with a photosensitive drum, and with a toner layer thickness regulating member that regulates the thickness of a toner layer adhering to the surface of this cleaning roller. The toner layer thickness regulating member is formed by a toner layer thickness regulating roller that rotates in contact with the cleaning roller.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: September 24, 2013
    Assignee: Kyocera Document Solutions Inc.
    Inventors: Kiyotaka Kobayashi, Takahiko Murata, Ai Takagami, Yoshimi Shimizu, Mitsuhiro Goda, Susumu Hanano, Hirofumi Tsuji, Chisato Hatakeyama, Katsuya Ota
  • Publication number: 20120121295
    Abstract: An electrification apparatus includes: an electrification roller that rotates touching an image carrier to electrify a surface of the image carrier; a support member that by means of a bearing portion, supports rotatably a rotation shat which is disposed at an end portion in a shaft direction of the electrification roller; and a cover member that is disposed on the rotation shaft and covers a portion of the rotation shaft which is near the bearing portion.
    Type: Application
    Filed: October 18, 2011
    Publication date: May 17, 2012
    Applicant: KYOCERA MITA CORPORATION
    Inventor: Hirofumi TSUJI
  • Publication number: 20120051788
    Abstract: The belt driving mechanism of the present invention includes: a driving pulley; a driven pulley; a looped transmission belt extended over the driving pulley and the driven pulley; a first holding member that bearing-supports and holds the driving pulley; a second holding member that bearing-supports and holds the driven pulley, and is combined with the first holding member; and a biasing member that biases the first holding member and the second holding member to be separated, in a state in which the first holding member and the second holding member are combined.
    Type: Application
    Filed: August 26, 2011
    Publication date: March 1, 2012
    Applicant: KYOCERA MITA CORPORATION
    Inventors: Hirofumi TSUJI, Akihiro YAMAGUCHI
  • Publication number: 20110158722
    Abstract: A cleaning apparatus is provided with a cleaning roller that is positioned so as to be in contact with a photosensitive drum, and with a toner layer thickness regulating member that regulates the thickness of a toner layer adhering to the surface of this cleaning roller. The toner layer thickness regulating member is formed by a toner layer thickness regulating roller that rotates in contact with the cleaning roller.
    Type: Application
    Filed: December 9, 2010
    Publication date: June 30, 2011
    Inventors: Kiyotaka KOBAYASHI, Takahiko MURATA, Ai TAKAGAMI, Yoshimi SHIMIZU, Mitsuhiro GODA, Susumu HANANO, Hirofumi TSUJI, Chisato HATAKEYAMA, Katsuya OTA
  • Patent number: 7820205
    Abstract: The present invention provides a composition comprising precious metal particles for treating or preventing a psychiatric symptom. The composition of the invention is able to improve various psychiatric symptoms and useful for treating or preventing psychiatric disorders.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: October 26, 2010
    Assignee: Inovex Co., Ltd.
    Inventors: Mamoru Takakusagi, Shigeki Shimizu, Hirofumi Tsuji
  • Patent number: 7455401
    Abstract: A line dot recorder which prevents the throughput (print time per sheet) from lowering (time lengthens) in multi-pass dot recording in a predetermined print area on the printing medium being moved by a rotary drum, thereby forms high-quality images efficiently on a plurality of printing papers. The line dot recorder A includes a nozzle head 1 as a recording head having recording elements in the form of a plurality of ink orifices (nozzles) of an inkjet system, a rotary drum 2 having its outer periphery close to the recording head, a paper feed means 3 for supplying paper to the drum, a mounting/holding means 4 for mounting four papers on the drum, and a paper delivery means 5 for delivering paper, and can form high-quality images while eliminating the lowering of throughput by dot recording by a 4-pass multi-pass system in the sub-scanning direction while rotating the drum at quadruple speed and forming images by four rotations of the drum.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: November 25, 2008
    Assignee: Hamada Printing Press Co., Ltd.
    Inventors: Haruhiko Koto, Hirofumi Tsuji, Hiroyuki Santo, Masaru Nakano, Osamu Satake, Makoto Miyaji
  • Publication number: 20080031953
    Abstract: The present invention provides a composition comprising precious metal particles for treating or preventing a psychiatric symptom. The composition of the invention is able to improve various psychiatric symptoms and useful for treating or preventing psychiatric disorders.
    Type: Application
    Filed: September 29, 2005
    Publication date: February 7, 2008
    Applicant: Inovex Co., Ltd.
    Inventors: Mamoru Takakusagi, Shigeki Shimizu, Hirofumi Tsuji
  • Publication number: 20070035569
    Abstract: This invention aims to provide a line dot recorder which prevents the throughput (print time per sheet) from lowering (time lengthens) in multi-pass dot recording in predetermined print area on the printing medium being moved by a rotary drum, thereby forming high-quality images efficiently on a plurality of printing papers. The line dot recorder A includes a nozzle head 1 as a recording head having recording elements in the form of a plurality of ink orifices (nozzles) of inkjet system, a rotary drum 2 having its outer periphery close to the recording head, a paper feed means 3 for supplying paper to the drum, a mounting/holding means 4 for mounting four papers on the drum, and a paper delivery means 5 for delivering paper, and can form high-quality images while eliminating the lowering of throughput by dot recording by 4-pass multi-pass system in the sub-scanning direction while rotating the drum at quadruple speed and forming images by four rotations of the drum.
    Type: Application
    Filed: September 21, 2004
    Publication date: February 15, 2007
    Inventors: Haruhiko Koto, Hirofumi Tsuji, Hiroyuki Santo, Masaru Nakano, Osamu Satake, Makoto Miyaji
  • Patent number: 6455594
    Abstract: A platinum colloid is formed by reducing platinum ions by agitating a treatment solution, while controlling temperature of the treatment solution under a reductive atmospheric condition. The solution contains one part of capacity of a platinum chloride acid solution, 400 to 500 parts of capacity of water, a non-ion based surface-active agent in an amount of 0.2 to 2 times with respect to an amount of the platinum chloride acid solution, a reducing agent in an amount of 40 to 60 times with respect to the amount of the platinum cloride acid solution, and a Ph compensating agent in an amount of 10 to 30 times with respect to the amount of the platinum chloride acid solution if the concentration thereof is 5%, to thereby adjust pH of the treatment solution to neutral or weak alkalinity.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: September 24, 2002
    Assignee: Yokohama Town Service Co., Ltd.
    Inventor: Hirofumi Tsuji