Patents by Inventor Kazuyoshi Hagiwara

Kazuyoshi Hagiwara 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: 9465347
    Abstract: A transport device includes a driving roller that drives an endless belt so that the belt rotates, a transfer roller that presses the belt from an inner side of the belt toward an image carrier, which carries a toner image, and transfers the toner image onto the belt, a first stretching roller that stretches the belt, a second stretching roller that stretches the belt, wherein the second stretching roller is disposed at a position between the driving roller and the first stretching roller, and wherein the second stretching roller is disposed on a side on which the transfer roller is in contact with the belt, and an adjusting mechanism that adjusts a direction of a rotary shaft of the second stretching roller.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: October 11, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Kazuyoshi Hagiwara
  • Patent number: 9335507
    Abstract: The present invention provides a lens driving device having a component for limiting a movement amount generated during impacting, wherein an impact force is alleviated by utilizing the component for limiting the movement amount, so that a driving coil can be prevented from falling off, and the damage to the leaf springs can be alleviated. The leaf springs formed into a cantilever beam structure as the damper for alleviating the impact in the vertical direction and the planar direction are arranged between the lower fixing body and the upper fixing body, and the impact force can be alleviated by utilizing first projection parts and second projection parts projected out from the lens support, and the existing structure does not need to be greatly changed.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: May 10, 2016
    Assignees: HUIZHOU DAYAWAN EVER BRIGHT ELECTRONIC INDUSTRY CO., LTD., JSS OPTICAL TECHNOLOGY CO., LTD., HUIZHOU DAYA BAY JSS OPTICAL TECHNOLOGY CO., LTD.
    Inventor: Kazuyoshi Hagiwara
  • Patent number: 9335508
    Abstract: The present invention provides a lens driving device which does not cause a large size or has no need to add components. Damage of components for limiting the amount of movement in all directions caused by impact can be alleviated, and durability is easily improved. Clamping parts protruding from a lens support for alleviating the impact in the vertical, plane, and rotation directions are arranged between a lower side fixing body and an upper side fixing body, and the clamping parts of the lens support abut with clamping parts arranged on a lower side fixed member and/or clamping parts arranged on an upper fixed member mutually so as to limit the maximum amount of movement in the vertical direction, the plane direction and the rotation direction, thus great change is not required for an existing structure, and the durability for impact can also be improved.
    Type: Grant
    Filed: December 14, 2014
    Date of Patent: May 10, 2016
    Assignees: HUIZHOU DAYAWAN EVER BRIGHT ELECTRONIC INDUSTRY CO, JSS OPTICAL TECHNOLOGY CO., LTD., HUIZHOU DAYA BAY JSS OPTICAL TECHNOLOGY. CO., LTD.
    Inventor: Kazuyoshi Hagiwara
  • Publication number: 20160041363
    Abstract: A lens driver which has a high driving effectiveness and a compact form, and which does not require a precise assembling and a assembling time.
    Type: Application
    Filed: August 5, 2015
    Publication date: February 11, 2016
    Inventor: Kazuyoshi Hagiwara
  • Publication number: 20150277081
    Abstract: The present invention provides a lens driving device which can limit rotations caused by torque generated when a lens is inserted or disassembled. The state that the lens driving device is damaged can be distinguished, and the finished product rate and reliability of a camera assembly are improved more easily. The lens driving device includes a lens support, a coil disposed on the lens support, a fixing assembly and springs for supporting the lens support to move along the optical axis, and a magnet yoke. Extruding clamping parts closer to the upper side than a mounting surface for the springs to mount are arranged on the lens support, the magnet yoke is provided with bending parts extending from the edge part of the opening part downwardly, and the bending parts of the magnet yoke are located closer to the upper side than the mounting surface.
    Type: Application
    Filed: March 28, 2015
    Publication date: October 1, 2015
    Inventor: Kazuyoshi Hagiwara
  • Publication number: 20150277330
    Abstract: A transport device includes a driving roller that drives an endless belt so that the belt rotates, a transfer roller that presses the belt from an inner side of the belt toward an image carrier, which carries a toner image, and transfers the toner image onto the belt, a first stretching roller that stretches the belt, a second stretching roller that stretches the belt the driving roller and the first stretching roller and on a side on which the transfer roller is in contact with the belt, and an adjusting mechanism that adjusts a direction of a rotary shaft of the second stretching roller.
    Type: Application
    Filed: September 3, 2014
    Publication date: October 1, 2015
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Kazuyoshi HAGIWARA
  • Publication number: 20150277297
    Abstract: An image forming apparatus includes an image bearing member that bears an image, a transfer belt that is constituted of an endless belt member and onto which the image on the image bearing member is transferred, and multiple roller members around which the transfer belt is rotatably wrapped. The multiple roller members include a drive roller that rotationally drives the transfer belt and a tilt changeable roller that is capable of changing a tilt angle thereof. An area of the tilt changeable roller that is in contact with the belt member is provided with a contact portion composed of rubber with a coefficient of static friction selected from a range between 0.7 and 1.3.
    Type: Application
    Filed: March 10, 2015
    Publication date: October 1, 2015
    Inventors: Yuichi FUJISAWA, Kazuyoshi HAGIWARA, Arichika TANAKA
  • Publication number: 20150177478
    Abstract: The present invention provides a lens driving device which does not cause a large size or has no need to add components. Damage of components for limiting the amount of movement in all directions caused by impact can be alleviated, and durability is easily improved. Clamping parts protruding from a lens support for alleviating the impact in the vertical, plane, and rotation directions are arranged between a lower side fixing body and an upper side fixing body, and the clamping parts of the lens support abut with clamping parts arranged on a lower side fixed member and/or clamping parts arranged on an upper fixed member mutually so as to limit the maximum amount of movement in the vertical direction, the plane direction and the rotation direction, thus great change is not required for an existing structure, and the durability for impact can also be improved.
    Type: Application
    Filed: December 14, 2014
    Publication date: June 25, 2015
    Inventor: Kazuyoshi Hagiwara
  • Patent number: 9046866
    Abstract: A cleaning device includes first and second cleaning members and a moving member. The first cleaning member contacts a surface of a rotating member, which is in contact with an image carrier, to clean the rotating member by removing substances attached thereto. The moving member supports the first cleaning member in a movable manner. The second cleaning member is disposed downstream of the first cleaning member in a rotation direction in which the rotating member rotates and contacts the surface of the rotating member to clean the rotating member by removing the substances. The second cleaning member removes the substances that remain on the surface of the rotating member after the first cleaning member has been separated from the rotating member so that the substances are removed before a part of the surface of the rotating member on which the substances remain comes into contact with the image carrier.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: June 2, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Koichi Sato, Kazuyoshi Hagiwara, Kazutoshi Sugitani, Kuniaki Tanaka, Yuji Kamikawa, Koji Deguchi, Yusuke Sakai, Kaoru Matsushita
  • Publication number: 20150147092
    Abstract: Provided is an image forming apparatus including an apparatus body, an opening and closing member that is provided to be opened and closed with respect to the apparatus body, and a toner image holding unit that is configured such that an image holding member holding toner images formed by plural toner image forming units is movable between a first contact position at which the image holding member comes into contact with all toner image forming units and a second contact position at which the image holding member comes into contact with at least one of the toner image forming units, wherein when the opening and closing member is opened with respect to the apparatus body or when a power supply supplying power to the apparatus body is disconnected, the image holding member moves to the second contact position.
    Type: Application
    Filed: May 7, 2014
    Publication date: May 28, 2015
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Kazuyoshi HAGIWARA
  • Publication number: 20150055231
    Abstract: The present invention provides a lens driving device having a component for limiting a movement amount generated during impacting, wherein an impact force is alleviated by utilizing the component for limiting the movement amount, so that a driving coil can be prevented from falling off, and the damage to the leaf springs can be alleviated. The leaf springs formed into a cantilever beam structure as the damper for alleviating the impact in the vertical direction and the planar direction are arranged between the lower fixing body and the upper fixing body, and the impact force can be alleviated by utilizing first projection parts and second projection parts projected out from the lens support, and the existing structure does not need to be greatly changed.
    Type: Application
    Filed: August 19, 2014
    Publication date: February 26, 2015
    Inventor: Kazuyoshi Hagiwara
  • Patent number: 8897668
    Abstract: A cleaning device includes first to third cleaning members that clean a surface of an endless belt that is looped over rollers including a driving roller. The first cleaning member is brought into contact with and separated from the surface at a predetermined timing. The second cleaning member is disposed upstream of the first cleaning member and downstream of the driving roller in a movement direction of the endless belt. The second cleaning member is in contact with the endless belt so as to prevent a tension variation of the endless belt caused by the first cleaning member from affecting the driving roller. The third cleaning member is disposed downstream of the first cleaning member. A contact state in which the third cleaning member is in contact with the endless belt is switched from a first contact state to a second contact state so as to reduce the tension variation.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: November 25, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Atsushi Kaneko, Kazuyoshi Hagiwara, Masaaki Tokunaga, Kazutoshi Sugitani, Koichi Sato, Tsutomu Komiyama
  • Patent number: 8879968
    Abstract: An image forming apparatus includes an image bearing member, a medium transport member, an image transfer member, a first detection member detecting widthwise deviation of the image bearing member, a first deviation correcting member tiltable relative to the width direction and supporting the image bearing member, a first correction control section tilting the first deviation correcting member to correct deviation of the image bearing member, a second detection member detecting widthwise deviation of the transport member, a second deviation correcting member tiltable relative to the width direction and supporting the transport member, and a second correction control section tilting the second deviation correcting member to correct deviation of the transport member.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: November 4, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masaaki Takahashi, Yasuhiro Shimada, Takashi Hoshino, Koichi Sato, Kazutoshi Sugitani, Yusuke Sakai, Koji Deguchi, Kazuyoshi Hagiwara
  • Patent number: 8862019
    Abstract: A cleaning device includes at least one first cleaning member that removes residual substances that remain on a surface of an endless belt by being in contact with the surface of the endless belt while rotating in a direction that is opposite to a movement direction in which the endless belt moves; a second cleaning member that is brought into contact with and separated from the surface of the endless belt at a predetermined timing and removes the residual substances that remain on the surface of the endless belt; and a switching unit that switches a rotation direction of the first cleaning member to a direction the same as the movement direction of the endless belt when the second cleaning member is brought into contact with the surface of the endless belt and cleans the surface.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: October 14, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Tsutomu Komiyama, Masaaki Tokunaga, Masakazu Shirai, Kazuyoshi Hagiwara, Kazutoshi Sugitani, Koichi Sato, Masaaki Takahashi
  • Patent number: 8744302
    Abstract: A cleaning device includes a first cleaning member, a first opposing member, a second cleaning member, a second opposing member, and a pressing member. The first and second cleaning members clean an outer surface of a belt member by coming into contact with the outer surface. The first and second opposing members are in contact with an inner face of the belt member at positions that are opposite the first and second cleaning members. The pressing member is disposed between the first and second opposing members and is in contact with the outer surface of the belt member. The pressing member presses a portion of the belt member that is located between the first and second opposing members from an outer surface side of the belt member toward an inner face side of the belt member.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: June 3, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kaoru Matsushita, Kazuyoshi Hagiwara, Kazutoshi Sugitani, Kuniaki Tanaka, Koichi Sato, Yuji Kamikawa, Koji Deguchi, Yusuke Sakai
  • Publication number: 20140056609
    Abstract: A cleaning device includes first and second cleaning members and a moving member. The first cleaning member contacts a surface of a rotating member, which is in contact with an image carrier, to clean the rotating member by removing substances attached thereto. The moving member supports the first cleaning member in a movable manner. The second cleaning member is disposed downstream of the first cleaning member in a rotation direction in which the rotating member rotates and contacts the surface of the rotating member to clean the rotating member by removing the substances. The second cleaning member removes the substances that remain on the surface of the rotating member after the first cleaning member has been separated from the rotating member so that the substances are removed before a part of the surface of the rotating member on which the substances remain comes into contact with the image carrier.
    Type: Application
    Filed: January 18, 2013
    Publication date: February 27, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Koichi SATO, Kazuyoshi HAGIWARA, Kazutoshi SUGITANI, Kuniaki TANAKA, Yuji KAMIKAWA, Koji DEGUCHI, Yusuke SAKAI, Kaoru MATSUSHITA
  • Publication number: 20130142540
    Abstract: A cleaning device includes first to third cleaning members that clean a surface of an endless belt that is looped over rollers including a driving roller. The first cleaning member is brought into contact with and separated from the surface at a predetermined timing. The second cleaning member is disposed upstream of the first cleaning member and downstream of the driving roller in a movement direction of the endless belt. The second cleaning member is in contact with the endless belt so as to prevent a tension variation of the endless belt caused by the first cleaning member from affecting the driving roller. The third cleaning member is disposed downstream of the first cleaning member. A contact state in which the third cleaning member is in contact with the endless belt is switched from a first contact state to a second contact state so as to reduce the tension variation.
    Type: Application
    Filed: May 31, 2012
    Publication date: June 6, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Atsushi KANEKO, Kazuyoshi HAGIWARA, Masaaki TOKUNAGA, Kazutoshi SUGITANI, Koichi SATO, Tsutomu KOMIYAMA
  • Publication number: 20130142539
    Abstract: A cleaning device includes at least one first cleaning member that removes residual substances that remain on a surface of an endless belt by being in contact with the surface of the endless belt while rotating in a direction that is opposite to a movement direction in which the endless belt moves; a second cleaning member that is brought into contact with and separated from the surface of the endless belt at a predetermined timing and removes the residual substances that remain on the surface of the endless belt; and a switching unit that switches a rotation direction of the first cleaning member to a direction the same as the movement direction of the endless belt when the second cleaning member is brought into contact with the surface of the endless belt and cleans the surface.
    Type: Application
    Filed: May 25, 2012
    Publication date: June 6, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tsutomu KOMIYAMA, Masaaki TOKUNAGA, Masakazu SHIRAI, Kazuyoshi HAGIWARA, Kazutoshi SUGITANI, Koichi SATO, Masaaki TAKAHASHI
  • Publication number: 20130136487
    Abstract: A cleaning device includes a first cleaning member, a first opposing member, a second cleaning member, a second opposing member, and a pressing member. The first and second cleaning members clean an outer surface of a belt member by coming into contact with the outer surface. The first and second opposing members are in contact with an inner face of the belt member at positions that are opposite the first and second cleaning members. The pressing member is disposed between the first and second opposing members and is in contact with the outer surface of the belt member. The pressing member presses a portion of the belt member that is located between the first and second opposing members from an outer surface side of the belt member toward an inner face side of the belt member.
    Type: Application
    Filed: May 25, 2012
    Publication date: May 30, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kaoru MATSUSHITA, Kazuyoshi HAGIWARA, Kazutoshi SUGITANI, Kuniaki TANAKA, Koichi SATO, Yuji KAMIKAWA, Koji DEGUCHI, Yusuke SAKAI
  • Publication number: 20130064579
    Abstract: An image forming apparatus includes an image bearing member, a medium transport member, an image transfer member, a first detection member detecting widthwise deviation of the image bearing member, a first deviation correcting member tiltable relative to the width direction and supporting the image bearing member, a first correction control section tilting the first deviation correcting member to correct deviation of the image bearing member, a second detection member detecting widthwise deviation of the transport member, a second deviation correcting member tiltable relative to the width direction and supporting the transport member, and a second correction control section tilting the second deviation correcting member to correct deviation of the transport member. A width-direction moving amount of the image bearing member per unit time when the first deviation correcting member is tilted is larger than that of the transport member per unit time when the second deviation correcting member is tilted.
    Type: Application
    Filed: February 17, 2012
    Publication date: March 14, 2013
    Applicant: FUJI XEROX Co., Ltd.
    Inventors: Masaaki Takahashi, Yasuhiro Shimada, Takashi Hoshino, Koichi Sato, Kazutoshi Sugitani, Yusuke Sakai, Koji Deguchi, Kazuyoshi Hagiwara