Patents by Inventor Kiyoto Kojima

Kiyoto Kojima 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: 10479396
    Abstract: A second toothed member is configured to change its position between a meshing position where first teeth mesh with second teeth and a meshing releasing position where the first teeth do not mesh with the second teeth. A first toothed member and a facing member move together with an upper jacket. The second toothed member located at the meshing position receives an impact from the first toothed member so as to collide against an impact absorbing member after rupture of a guide shaft and deform the impact absorbing member. The second toothed member located at the meshing releasing position receives an impact from the facing member so as to cause rupture of the guide shaft and deformation of the impact absorbing member to occur concurrently.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: November 19, 2019
    Assignee: JTEKT CORPORATION
    Inventors: Rika Kagawa, Kiyoto Takei, Akihiro Takami, Tomoki Arai, Hideyoshi Hanai, Tsuyoshi Kojima, Hiroshi Obata
  • Publication number: 20180162146
    Abstract: A sheet conveying system includes: an upstream apparatus provided on an upstream side in a conveyance direction of a paper sheet; a downstream apparatus provided on a downstream side of the upstream apparatus; an upstream conveyor that conveys the paper sheet; an upstream driver that drives the upstream conveyor; a downstream conveyor that receives the paper sheet conveyed from the upstream conveyor, and conveys the paper sheet received from the upstream conveyor; a downstream driver that drives the downstream conveyor; an upstream controller that is connected to the upstream and downstream drivers; and a downstream controller that is connected to the downstream and upstream drivers, wherein the sheet conveying system switches control on the basis of sheet information between first control in which the upstream controller controls the upstream and downstream drivers and second control in which the downstream controller controls the downstream and upstream drivers.
    Type: Application
    Filed: November 17, 2017
    Publication date: June 14, 2018
    Applicant: Konica Minolta, Inc.
    Inventors: Kiyoto KOJIMA, Takahiro YOKOYA, Eiji NISHIKAWA
  • Patent number: 9994050
    Abstract: A sheet conveying system includes: an upstream apparatus provided on an upstream side in a conveyance direction of a paper sheet; a downstream apparatus provided on a downstream side of the upstream apparatus; an upstream conveyor that conveys the paper sheet; an upstream driver that drives the upstream conveyor; a downstream conveyor that receives the paper sheet conveyed from the upstream conveyor, and conveys the paper sheet received from the upstream conveyor; a downstream driver that drives the downstream conveyor; an upstream controller that is connected to the upstream and downstream drivers; and a downstream controller that is connected to the downstream and upstream drivers, wherein the sheet conveying system switches control on the basis of sheet information between first control in which the upstream controller controls the upstream and downstream drivers and second control in which the downstream controller controls the downstream and upstream drivers.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: June 12, 2018
    Assignee: Konica Minolta, Inc.
    Inventors: Kiyoto Kojima, Takahiro Yokoya, Eiji Nishikawa
  • Patent number: 9703238
    Abstract: An image forming system includes: an image forming apparatus that forms an image on a sheet; one or more sheet carrying devices successively disposed on the downstream side of the image forming apparatus; and a control device that controls the image forming apparatus and the one or more sheet carrying devices based on a job that designates a page configuration containing a page order and sheet types, wherein the sheet carrying device includes a bypass conveyance path along which the sheet output from an upstream device is conveyed toward a downstream device, and a sheet tray unit that temporarily stores the sheet output from the upstream device and discharges the sheet toward the bypass conveyance path, and the control device divides the job into sheet types and determines a printing order of the divided sheet types and sheet types to be stored in the sheet carrying device.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: July 11, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kenji Izumiya, Kiyoto Kojima, Satoshi Ogata, Hirokatsu Kodama
  • Publication number: 20160259278
    Abstract: An image forming system includes: an image forming apparatus that forms an image on a sheet; one or more sheet carrying devices successively disposed on the downstream side of the image forming apparatus; and a control device that controls the image forming apparatus and the one or more sheet carrying devices based on a job that designates a page configuration containing a page order and sheet types, wherein the sheet carrying device includes a bypass conveyance path along which the sheet output from an upstream device is conveyed toward a downstream device, and a sheet tray unit that temporarily stores the sheet output from the upstream device and discharges the sheet toward the bypass conveyance path, and the control device divides the job into sheet types and determines a printing order of the divided sheet types and sheet types to be stored in the sheet carrying device.
    Type: Application
    Filed: February 5, 2016
    Publication date: September 8, 2016
    Inventors: Kenji IZUMIYA, Kiyoto KOJIMA, Satoshi OGATA, Hirokatsu KODAMA
  • Patent number: 9229387
    Abstract: A fixing apparatus included in an image forming apparatus includes a fixing heater that performs heat fixing, a control unit that controls the fixing heater based on control patterns, a temperature sensor that detects temperature of the fixing heater, and a voltage detection unit that detects a voltage that is applied to the fixing heater. In each control pattern, turn-on period of the fixing heater and turn-off period of the fixing heater are set according to a control cycle of a half cycle duty control. The control unit controls the switching unit to turn on or off the fixing heater using a combination of the control patterns each satisfying a standard for preventing a flicker during each control period of time that is integral multiplication of the control cycle according to the temperature of the fixing heater and the voltage value allied to the fixing heater.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: January 5, 2016
    Assignee: Konica Minolta, Inc.
    Inventors: Kosuke Sasaki, Kenji Tamaki, Masayuki Watanabe, Kiyoto Kojima, Kenji Izumiya, Hiroshi Oyama
  • Publication number: 20150268593
    Abstract: A fixing apparatus included in an image forming apparatus includes a fixing heater that performs heat fixing, a control unit that controls the fixing heater based on control patterns, a temperature sensor that detects temperature of the fixing heater, and a voltage detection unit that detects a voltage that is applied to the fixing heater. In each control pattern, turn-on period of the fixing heater and turn-off period of the fixing heater are set according to a control cycle of a half cycle duty control. The control unit controls the switching unit to turn on or off the fixing heater using a combination of the control patterns each satisfying a standard for preventing a flicker during each control period of time that is integral multiplication of the control cycle according to the temperature of the fixing heater and the voltage value allied to the fixing heater.
    Type: Application
    Filed: March 16, 2015
    Publication date: September 24, 2015
    Inventors: Kosuke SASAKI, Kenji TAMAKI, Masayuki WATANABE, Kiyoto KOJIMA, Kenji IZUMIYA, Hiroshi OYAMA
  • Patent number: 8955839
    Abstract: A paper feed apparatus is capable of correcting the skew of a sheet irrespective of a differential conveyance distance. The paper feed apparatus is provided with a first large volume paper feed apparatus 100A having a control unit 130 which performs first correction control to correct the skew of a sheet by controlling a first conveyance unit 110 and forming a loop of the sheet P before a paper stop rollers 110d, and also performs second correction control to correct the skew of a sheet by controlling a second conveyance unit 120 and forming a loop of the sheet before a paper stop rollers 110d. In this case, the control unit 130 controls the first conveyance unit 110 and the second conveyance unit 120 in order that the skew correcting ability of the second correction control becomes greater than the skew correcting ability of the first correction control.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: February 17, 2015
    Assignee: Konica Minolta, Inc.
    Inventors: Hiroshi Oyama, Kenji Izumiya, Kiyoto Kojima, Atsushi Takahashi
  • Patent number: 8764003
    Abstract: When conveying an envelope, a posture of the envelope is corrected by hitting a closed portion of the envelope, which is opposite side of an opened portion of the envelope, against a nip portion between upper and lower rollers of the pre-registration rollers and the envelope is then conveyed with the envelope being nipped by the upper and lower rollers of the pre-registration rollers. The upper and lower rollers of the pre-registration rollers nip the envelope to remove air from the envelope. When setting an envelope mode to control a conveying speed of the envelope based on a coverage rate of an image to be formed on the envelope, the conveying speed of the envelope is controlled by adjusting a rotation speed of the registration rollers based on the coverage rate of the set envelope mode.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: July 1, 2014
    Assignee: Konica Minolta Business Technologies, Icn.
    Inventors: Hiroshi Oyama, Kenji Izumiya, Kiyoto Kojima, Atsushi Takahashi
  • Publication number: 20140138899
    Abstract: A paper feed apparatus is capable of correcting the skew of a sheet irrespective of a differential conveyance distance. The paper feed apparatus is provided with a first Large volume paper feed apparatus 100A having a control unit 130 which performs first correction control to correct the skew of a sheet by controlling a first conveyance unit 110 and forming a loop of the sheet P before a paper stop rollers 110d, and also performs second correction control to correct the skew of a sheet by controlling a second conveyance unit 120 and forming a loop of the sheet before a paper stop rollers 110d. In this case, the control unit 130 controls the first conveyance unit 110 and the second conveyance unit 120 in order that the skew correcting ability of the second correction control becomes greater than the skew correcting ability of the first correction control.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 22, 2014
    Applicant: Konica Minolta , Inc.
    Inventors: Hiroshi OYAMA, Kenji IZUMIYA, Kiyoto KOJIMA, Atsushi TAKAHASHI
  • Publication number: 20130264763
    Abstract: When conveying an envelope, a posture of the envelope is corrected by hitting a closed portion of the envelope, which is opposite side of an opened portion of the envelope, against a nip portion between upper and lower rollers of the pre-registration rollers and the envelope is then conveyed with the envelope being nipped by the upper and lower rollers of the pre-registration, rollers. The upper and lower rollers of the pre-registration rollers nip the envelope to remove air from the envelope. When setting an envelope mode to control a conveying speed of the envelope based on a coverage rate of an image to be formed on the envelope, the conveying speed of the envelope is controlled by adjusting a rotation speed of the registration rollers based on the coverage rate of the set envelope mode.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 10, 2013
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Hiroshi OYAMA, Kenji IZUMIYA, Kiyoto KOJIMA, Atsushi TAKAHASHI
  • Patent number: 8007111
    Abstract: A projector includes: an image pickup unit which obtains an image of a subject; an image signal processing unit which cuts an image corresponding to a projection display area of the subject contained in an image obtained by the image pickup unit, and processes an image signal such that the cut image has a predetermined size to produce a projection image signal; and a projection unit which produces an image according to the image signal produced by the image signal processing unit and projects the image.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: August 30, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Kiyoto Kojima
  • Publication number: 20090102987
    Abstract: A projector includes: an image pickup unit which obtains an image of a subject; an image signal processing unit which cuts an image corresponding to a projection display area of the subject contained in an image obtained by the image pickup unit, and processes an image signal such that the cut image has a predetermined size to produce a projection image signal; and a projection unit which produces an image according to the image signal produced by the image signal processing unit and projects the image.
    Type: Application
    Filed: October 9, 2008
    Publication date: April 23, 2009
    Applicant: Seiko Epson Corporation
    Inventor: Kiyoto Kojima
  • Publication number: 20080211961
    Abstract: A sequential scanning conversion device includes: N (N is 3 or larger integer) line memories which store each input image data of successive N main scanning lines contained in input image data for interlaced scanning; an input/output control unit which sequentially selects one of the N line memories and writes the input image data to the selected line memory, and also reads (N?1) input image data written to the other (N?1) line memories in such timing at least a part of which overlaps with the writing timing; and an image processing unit which produces output image data for sequential scanning corresponding to M (M is one or larger integer) main scanning lines by applying predetermined process established in advance to the (N?1) input image data.
    Type: Application
    Filed: February 26, 2008
    Publication date: September 4, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Kiyoto KOJIMA