Patents by Inventor Kazushige Kawamura

Kazushige Kawamura 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: 10003711
    Abstract: A light irradiation device includes a light source, a light guide member, and a holding member. The light guide member includes an incident surface, an exit surface, and a held surface. The incident surface has an elongated shape in a main scanning direction and faces a light emitting surface of the light source. The light guide member includes a securing structure in each of both end portions in the main scanning direction, which are out of a light guide area of the light guide member. The securing structure in one end portion is an engagement lug structure protruding to penetrate into a through-hole of the holding member, including a lug on a leading end, and engaging the holding member. The securing structure on another end portion is a fastening structure having a fastening hole penetrated with a fastening member and being secured to the holding member with the fastening member.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: June 19, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Akihiro Iwamatsu, Kazushige Kawamura, Takuya Kohda
  • Patent number: 9988223
    Abstract: An automatic document feeding device includes a document tray, an ejection tray, and a document takeout port. The document tray is rotatably attached to a rotation fulcrum provided in a body of the automatic document feeder, to load a document. The document tray includes a first positioner and a second positioner. The first positioner is disposed at a front side of the body in a direction perpendicular to a document feed direction. The second positioner is disposed at a depth side of the body in the direction perpendicular to the document feed direction. The first positioner is disposed upstream from the rotation fulcrum in the document feed direction and above the document takeout port in the body. An upper portion and side surfaces of the first positioner in the direction perpendicular to the document feed direction are surrounded by the document tray in a closed state of the document tray.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: June 5, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Munekazu Hirata, Takayuki Andoh, Koji Hatayama, Kaoru Tada, Tatsuaki Nagano, Yasunobu Youda, Toshiyuki Horikawa, Yohei Osanai, Kazushige Kawamura, Takuji Kawai
  • Patent number: 9819838
    Abstract: An automatic document feeding device includes a conveyance unit, an image reading unit, a color reference member, a moving assembly, and a drive source. The drive source includes a rotation output shaft to drive the conveyance unit and the moving assembly. The drive source changes the rotation output shaft from a forward rotation direction to a reverse rotation direction to reversely rotate the rotation output shaft to a set reverse rotation angle set in advance, according to a condition of conveyance of the document. In a rotation transmission route from the rotation output shaft to the moving assembly, the movement regulator is disposed in a first reverse rotation drive region from when a rotation direction of the rotation output shaft is changed to the reverse rotation direction to when a rotation angle of the rotation output shaft after the change in the reverse rotation direction reaches the set reverse rotation angle.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: November 14, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Koji Hatayama, Takayuki Andoh, Tatsuaki Nagano, Kaoru Tada, Munekazu Hirata, Kazushige Kawamura, Toshiyuki Horikawa, Takuji Kawai, Yohei Osanai, Yasunobu Youda
  • Patent number: 9796252
    Abstract: A restricting device includes: a movable member that is capable of changing a posture with respect to a support member; and a buffer member that is fixed to the movable member, comes into contact with the support member in accordance with a posture change of the movable member, and restricts the posture of the movable member, wherein in the movable member, a mounting recess portion, an outlet port, a slip-off preventing piece, and a fitting piece are formed, and the buffer member has a fixing portion, an elastic portion, and a connecting portion, and in the elastic portion, a fitting recess portion is fitted is formed.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: October 24, 2017
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yoji Nagashima, Yoshitaka Ide, Kazushige Kawamura
  • Publication number: 20170264770
    Abstract: A light irradiation device includes a light source, a light guide member, and a holding member. The light guide member includes an incident surface, an exit surface, and a held surface. The incident surface has an elongated shape in a main scanning direction and faces a light emitting surface of the light source. The light guide member includes a securing structure in each of both end portions in the main scanning direction, which are out of a light guide area of the light guide member. The securing structure in one end portion is an engagement lug structure protruding to penetrate into a through-hole of the holding member, including a lug on a leading end, and engaging the holding member. The securing structure on another end portion is a fastening structure having a fastening hole penetrated with a fastening member and being secured to the holding member with the fastening member.
    Type: Application
    Filed: March 7, 2017
    Publication date: September 14, 2017
    Inventors: Akihiro IWAMATSU, Kazushige KAWAMURA, Takuya KOHDA
  • Patent number: 9687781
    Abstract: This desulfurization device is for desulfurizing a discharge gas which contains sulfur oxides and which was discharged from a device for sulfuric acid production that includes a concentrated-sulfuric-acid production step in which sulfur trioxide gas obtained by oxidizing sulfur dioxide gas is absorbed in an aqueous sulfuric acid solution while supplying water thereto to thereby produce sulfuric acid having a concentration as high as 90 wt % or more but less than 99 wt %, the desulfurization device comprising: a desulfurization tower in which the sulfur oxides are removed from the discharge gas and, simultaneously therewith, dilute sulfuric acid is formed from the sulfur oxides; and a dilute sulfuric acid mixer which, in the concentrated-sulfuric-acid production step, mixes the dilute sulfuric acid with the aqueous sulfuric acid solution.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: June 27, 2017
    Assignee: Chiyoda Corporation
    Inventors: Kazushige Kawamura, Dai Takeda, Eiji Awai, Noboru Takei, Masataka Uemura
  • Publication number: 20170122021
    Abstract: A restricting device includes: a movable member that is capable of changing a posture with respect to a support member; and a buffer member that is fixed to the movable member, comes into contact with the support member in accordance with a posture change of the movable member, and restricts the posture of the movable member, wherein in the movable member, a mounting recess portion, an outlet port, a slip-off preventing piece, and a fitting piece are formed, and the buffer member has a fixing portion, an elastic portion, and a connecting portion, and in the elastic portion, a fitting recess portion is fitted is formed.
    Type: Application
    Filed: October 28, 2016
    Publication date: May 4, 2017
    Applicant: AISIN SEIKI KABUSHISIKI KAISHA
    Inventors: Yoji NAGASHIMA, Yoshitaka IDE, Kazushige KAWAMURA
  • Patent number: 9609159
    Abstract: A sheet conveyance device includes a sheet mount on which a standard-sized sheet is mountable; a first conveyor to bring in the sheet from the mount, convey the sheet through a reverse conveyance path such that the sheet passes through a specific operation position, and eject the sheet into a sheet ejection area outside the mount; and a second conveyor to bring in a hard sheet with a higher bending rigidity than the sheet from one end of a straight conveyance path along a plane passing through the specific position of the reverse path, and eject the hard sheet conveyed along the straight path from another end of the straight path at a sheet ejection area side. The mount includes a hard sheet ejection port to let through at least a leading edge portion of the hard sheet to be ejected from the second conveyor in a sheet ejection direction.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: March 28, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Koji Hatayama, Yasunobu Youda, Yohei Osanai, Tatsuaki Nagano, Kazushige Kawamura, Toshiyuki Horikawa
  • Patent number: 9571690
    Abstract: An image scanner, which is incorporated in an image forming apparatus, includes a stationary-document reading section, a moving-document reading section disposed at an angle to the stationary-document reading section, a reader movable between the stationary-document reading section and the moving-document reading section, and a reading element movable to different angles while contacting the stationary-document reading section and the moving-document reading section to selectively read a document placed on the stationary-document reading section and a document moving over the moving-document reading section. The image scanner further includes any one of position detector, a combination of a moving device and at least one position sensor, and a combination of at least one pressing member, a framework, and an angle changer.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: February 14, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yohei Osanai, Yasunobu Youda, Tatsuaki Nagano, Takayuki Andoh, Kaoru Tada, Munekazu Hirata, Toshiyuki Horikawa, Kazushige Kawamura, Takuji Kawai, Koji Hatayama
  • Publication number: 20160368728
    Abstract: An automatic document feeding device includes a document tray, an ejection tray, and a document takeout port. The document tray is rotatably attached to a rotation fulcrum provided in a body of the automatic document feeder, to load a document. The document tray includes a first positioner and a second positioner. The first positioner is disposed at a front side of the body in a direction perpendicular to a document feed direction. The second positioner is disposed at a depth side of the body in the direction perpendicular to the document feed direction. The first positioner is disposed upstream from the rotation fulcrum in the document feed direction and above the document takeout port in the body. An upper portion and side surfaces of the first positioner in the direction perpendicular to the document feed direction are surrounded by the document tray in a closed state of the document tray.
    Type: Application
    Filed: June 21, 2016
    Publication date: December 22, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Munekazu HIRATA, Takayuki ANDOH, Koji HATAYAMA, Kaoru TADA, Tatsuaki NAGANO, Yasunobu YOUDA, Toshiyuki HORIKAWA, Yohei OSANAI, Kazushige KAWAMURA, Takuji KAWAI
  • Publication number: 20160360073
    Abstract: An automatic document feeding device includes a conveyance unit, an image reading unit, a color reference member, a moving assembly, and a drive source. The conveyance unit conveys a document to an image reading position. The image reading unit reads an image of the document. The color reference member faces the image reading unit and includes a white reference face to correct shading. The moving assembly relatively moves the image reading unit and the color reference member. The movement regulator regulates a relative movement of the image reading unit and the color reference member by the moving assembly. The drive source includes a common rotation output shaft to drive the conveyance unit and the moving assembly. The drive source changes the rotation output shaft from a forward rotation direction to a reverse rotation direction to reversely rotate the rotation output shaft to a set reverse rotation angle set in advance, according to a condition of conveyance of the document by the conveyance unit.
    Type: Application
    Filed: June 2, 2016
    Publication date: December 8, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Koji HATAYAMA, Takayuki ANDOH, Tatsuaki NAGANO, Kaoru TADA, Munekazu HIRATA, Kazushige KAWAMURA, Toshiyuki HORIKAWA, Takuji KAWAI, Yohei OSANAI, Yasunobu YOUDA
  • Publication number: 20160277624
    Abstract: An image scanner, which is incorporated in an image forming apparatus, includes a stationary-document reading section, a moving-document reading section disposed at an angle to the stationary-document reading section, a reader movable between the stationary-document reading section and the moving-document reading section, and a reading element movable to different angles while contacting the stationary-document reading section and the moving-document reading section to selectively read a document placed on the stationary-document reading section and a document moving over the moving-document reading section. The image scanner further includes any one of position detector, a combination of a moving device and at least one position sensor, and a combination of at least one pressing member, a framework, and an angle changer.
    Type: Application
    Filed: March 11, 2016
    Publication date: September 22, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Yohei OSANAI, Yasunobu YOUDA, Tatsuaki NAGANO, Takayuki ANDOH, Kaoru TADA, Munekazu HIRATA, Toshiyuki HORIKAWA, Kazushige KAWAMURA, Takuji KAWAI, Koji HATAYAMA
  • Publication number: 20160257578
    Abstract: Disclosed herein is a water treatment process for efficiently removing oils from oil-containing water. The water treatment process is a method for treating oil-containing water, comprising the steps of: preparing an oil-adsorbing material that is made of a lipophilic resin such as a pyridine resin and that has many pores in its surface and bears hydrophilic groups on an inner surface of the pores; and bringing oil-containing water into contact with the surface of the oil-adsorbing material. The step of preparing an oil-adsorbing material includes the step of converting some of hydrophobic groups, such as nitrogen-containing aromatic rings, on the inner surface of the pores to hydrophilic groups such as quaternized amine or sulfonic acid.
    Type: Application
    Filed: July 15, 2014
    Publication date: September 8, 2016
    Inventors: Zhixiong You, Yoichi Umehara, Masayo Shinohara, Kazushige Kawamura, Takeshi Minami
  • Publication number: 20160127590
    Abstract: A sheet conveyance device includes a sheet mount on which a standard-sized sheet is mountable; a first conveyor to bring in the sheet from the mount, convey the sheet through a reverse conveyance path such that the sheet passes through a specific operation position, and eject the sheet into a sheet ejection area outside the mount; and a second conveyor to bring in a hard sheet with a higher bending rigidity than the sheet from one end of a straight conveyance path along a plane passing through the specific position of the reverse path, and eject the hard sheet conveyed along the straight path from another end of the straight path at a sheet ejection area side. The mount includes a hard sheet ejection port to let through at least a leading edge portion of the hard sheet to be ejected from the second conveyor in a sheet ejection direction.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 5, 2016
    Applicant: RICOH COMPANY, LTD.
    Inventors: Koji HATAYAMA, Yasunobu YOUDA, Yohei OSANAI, Tatsuaki NAGANO, Kazushige KAWAMURA, Toshiyuki HORIKAWA
  • Patent number: 9296283
    Abstract: A sunroof device comprising: a drive cable having driving teeth arranged in a longitudinal direction and being driven to move in the vehicle front-rear direction along a guiderail; and a sliding member that controls the posture of a functional bracket together with a movable panel, in conjunction with movement in the vehicle front-rear direction. The sunroof device also comprises: driven teeth formed on the sliding member, that are meshed with the driving teeth and restrict relative movement of the drive cable and the sliding member in the vehicle front-rear direction; and a mounted portion formed on the guiderail. The drive cable and the sliding member, in which the driving teeth are meshed with the driven teeth, are mounted on the mounted portion, and the mounted portion holds these in the vehicle lateral and vertical directions.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: March 29, 2016
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yoji Nagashima, Yusuke Kokubo, Shinichi Hiramatsu, Yoshitaka Ide, Kazushige Kawamura
  • Publication number: 20150298056
    Abstract: This desulfurization device is for desulfurizing a discharge gas which contains sulfur oxides and which was discharged from a device for sulfuric acid production that includes a concentrated-sulfuric-acid production step in which sulfur trioxide gas obtained by oxidizing sulfur dioxide gas is absorbed in an aqueous sulfuric acid solution while supplying water thereto to thereby produce sulfuric acid having a concentration as high as 90 wt % or more but less than 99 wt %, the desulfurization device comprising: a desulfurization tower in which the sulfur oxides are removed from the discharge gas and, simultaneously therewith, dilute sulfuric acid is formed from the sulfur oxides; and a dilute sulfuric acid mixer which, in the concentrated-sulfuric-acid production step, mixes the dilute sulfuric acid with the aqueous sulfuric acid solution.
    Type: Application
    Filed: October 25, 2013
    Publication date: October 22, 2015
    Inventors: Kazushige Kawamura, Dai Takeda, Eiji Awai, Noboru Takei, Masataka Uemura
  • Publication number: 20150130229
    Abstract: A sunroof device comprising: a drive cable having driving teeth arranged in a longitudinal direction and being driven to move in the vehicle front-rear direction along a guiderail; and a sliding member that controls the posture of a functional bracket together with a movable panel, in conjunction with movement in the vehicle front-rear direction. The sunroof device also comprises: driven teeth formed on the sliding member, that are meshed with the driving teeth and restrict relative movement of the drive cable and the sliding member in the vehicle front-rear direction; and a mounted portion formed on the guiderail. The drive cable and the sliding member, in which the driving teeth are meshed with the driven teeth, are mounted on the mounted portion, and the mounted portion holds these in the vehicle lateral and vertical directions.
    Type: Application
    Filed: May 14, 2013
    Publication date: May 14, 2015
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yoji Nagashima, Yusuke Kokubo, Shinichi Hiramatsu, Yoshitaka Ide, Kazushige Kawamura
  • Patent number: 8663594
    Abstract: An exhaust gas treating method removes sulfur dioxide from exhaust gas containing at least sulfur dioxide and mercury by bringing the exhaust gas into contact with absorption liquid. Persulfate is added into the absorption liquid or alternatively, iodine gas is added to the exhaust gas before the exhaust gas is brought into contact with the absorption liquid. A high removal rate for both sulfur dioxide and mercury is stably maintained if the load of power generation and the composition of exhaust gas fluctuate.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: March 4, 2014
    Assignee: Chiyoda Corporation
    Inventors: Kazushige Kawamura, Dai Takeda, Eiji Awai, Akira Kumagai
  • Patent number: 8600288
    Abstract: An image forming apparatus includes an image forming unit, a first sheet stack portion, a sheet output section, and a post processing unit. The image forming unit forms an image on a sheet. The first sheet stack portion is provided at an upper face of the image forming unit. The sheet output section outputs the sheet on which the image is formed by the image forming unit from one side of the image forming apparatus to the first sheet stack portion. The post processing unit is provided adjacent to a lateral side of the image forming unit at an upstream side of the sheet output section to execute post processing on the sheet. A sheet subjected to post-processing by the post-processing unit is output to the first sheet stack portion from the same direction as a sheet not subjected to post-processing by the post-processing unit.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: December 3, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Takamasa Shiraki, Kazushige Kawamura, Yoshihide Ohta, Takayuki Andoh, Masato Ogawa, Takuji Takahashi, Tetsuya Fujioka, Yasunobu Youda, Kohji Hatayama
  • Patent number: 8524186
    Abstract: A carbon-based catalyst for flue gas desulfurization is brought into contact with a flue gas containing at least SO2 gas, oxygen and water vapor so that the SO2 gas can react with the oxygen and the water vapor to form sulfuric acid which is to be recovered. On a surface of the carbon-based catalyst, iodine, bromine or a compound thereof is added, ion exchanged or supported and a water-repellent treatment is applied. The carbon-based catalyst can also be used as a mercury adsorbent for flue gas treatment for adsorbing and removing metallic mercury from a flue gas containing metallic mercury, SO2 gas, oxygen and water vapor.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: September 3, 2013
    Assignee: Chiyoda Corporation
    Inventors: Kazushige Kawamura, Dai Takeda, Eiji Awai