Patents by Inventor Toshihiro Sone

Toshihiro Sone 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).

  • Publication number: 20110076043
    Abstract: A fixing device includes a belt that has an endless shape, a roller that forms a nip with the belt, a support member that supports the belt interposed between the support member and the roller, a coil that generates a magnetic field for inducing current in the belt, an auxiliary heat generation member that generates heat with the current induced by the magnetic field in the loop of the belt, and a temperature sensor that is opposed to the auxiliary heat generation member with the belt interposed between the element and the auxiliary heat generation member and detects the temperature of an outer peripheral surface of the belt.
    Type: Application
    Filed: September 24, 2010
    Publication date: March 31, 2011
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Kazuhiko KIKUCHI, Satoshi Kinouchi, Shuji Yokoyama, Hiroyuki Kunugi, Hiroshi Nakayama, Yoshiaki Okano, Setsuo Takada, Toshihiro Sone
  • Patent number: 7917075
    Abstract: To provide a technique for preventing a temperature rise in a non-sheet passing areas in a fixing device. The fixing device includes: a heating rotational member that includes at least one roller and heats a toner transferred on a sheet; a pressing roller that nips and carries the sheet in cooperation with the heating rotational member; a heating device that heats the heating rotational member; and heat pipes arranged, on the inside of at least one of the roller of the heating rotational member and the pressing roller, in ranges on both the sides in an axial direction of the roller from positions closer to the center in the axial direction than both the ends of a minimum sheet passing range in the axial direction of the roller of the nipped and carried sheet to positions further on the outer sides in the axial direction than both the ends of a maximum sheet passing range.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: March 29, 2011
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Toshihiro Sone, Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda
  • Publication number: 20110070006
    Abstract: A temperature equalizing roller includes a metal pipe, a heat pipe that is located inside the metal pipe and has a thermal expansion coefficient higher than that of the metal pipe, and a joining layer. The joining layer lies between an outer peripheral surface of the heat pipe and an inner peripheral surface of the metal pipe, joins the outer peripheral surface of the heat pipe and the inner peripheral surface of the metal pipe, and has a higher thermal conductivity than a thermal conductivity of air.
    Type: Application
    Filed: September 17, 2010
    Publication date: March 24, 2011
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Toshihiro Sone, Kazuhiko Kikuchi, Satoshi Kinouchi, Hiroshi Nakayama, Hiroyuki Kunugi, Setsuo Takada, Shuji Yokoyama, Yoshiaki Okano
  • Patent number: 7894735
    Abstract: The fixing device of the image forming apparatus of the present invention is provided with a heat transfer probe which contacts the heat roller and a surface temperature of the heat roller is transferred thereto. The erroneous detection of the surface temperature of the heat roller caused from materials adhered to the heat roller is prevented, induction heating coils is regulated at a high level of accuracy using the highly precious detection result obtained from the heat transfer probe, the temperature control of the heat roller is promoted and a fixed image of high quality is obtained.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: February 22, 2011
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Toshihiro Sone, Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda
  • Patent number: 7881625
    Abstract: A fixing device of the invention detects a temperature of plural positions of a heat roller by a multiple non-contact temperature sensor at the same time and controls the temperature of plural heat source members. The non-contact temperature sensor and a contact temperature sensor detect the temperature of the same position. According to the detection result, maintenance is performed or a temperature conversion table is corrected, the non-contact temperature sensor is maintained with high precision, and the heat roller is controlled the temperature with high precision.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: February 1, 2011
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Toshiba
    Inventors: Satoshi Kinouchi, Osamu Takagi, Yoshinori Tsueda, Toshihiro Sone
  • Publication number: 20100322659
    Abstract: A fixing apparatus of the present invention includes a heating roller 2 that is a cylindrical member having a center axis, a pressurizing roller 3 that exerts pressure on the heating roller 2, and a temperature detecting element 6 that detects the temperature of the heating roller 2. The outer peripheral surface of the heating roller 2 is induction heated on the basis of the temperature information detected by the temperature detecting element 6. The fixing apparatus thus utilizes induction heating. The present invention is characterized in that the temperature detecting element 6 is placed in an area located vertically below the center axis of the heating member 2 and vertically below the outer peripheral surface of the heating member. The temperature detecting element 6 is thus provided at a position where it is unlikely to suffer thermal convection from the heating roller 2.
    Type: Application
    Filed: August 4, 2010
    Publication date: December 23, 2010
    Inventors: Yoshinori TSUEDA, Satoshi Kinouchi, Osamu Takagi, Toshihiro Sone
  • Patent number: 7843713
    Abstract: When the three U-, V-, W-phase arms of a DC/DC converter are turned on, they are alternately turned on by gate drive signals. When the U-, V-, W-phase arms are alternately turned on, an upper arm switching device of the U-phase arm, for example, is turned on, and thereafter a lower arm switching device of the U-phase arm is turned on. Thereafter, an upper arm switching device of the V-phase arm which is next to the U-phase arm is turned on, and thereafter a lower arm switching device of the V-phase arm is turned on. The upper and lower arm switching devices are thus turned on in a rotation switching process.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: November 30, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hidekazu Takenaka, Toshihiro Sone
  • Patent number: 7835681
    Abstract: An induction heating device of the invention is made to have a two-layer structure in which at an end of a magnetic core of an induction current generating coil, a litz wire of outside three turns is stacked on a litz wire of inside three turns. The width of a joint portion between plural induction current generating coils is made narrow, and a mutual induction current generated at the joint portion is reduced. Further, the whole length of the litz wire is shortened without changing the length of the magnetic core of the inductor current generating coil.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: November 16, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda, Toshihiro Sone
  • Patent number: 7826785
    Abstract: In an induction heating fixing device according to the invention, a first induction heating coil that generates an induced current across the total length of a heat roller is provided on the outer circumference of the heat roller having a metal conductive layer. A second induction heating coil that generates an induced current at a central part of the heat roller is provided, which crosses the first induction heating coil and is arranged on the outer side than the first induction heating coil. With the first induction heating coil, the heat roller is heated across the total length without generating any uneven temperature. On-off control of the first induction heating coil and the second induction heating coil is carried out, and the temperature distribution in the longitudinal direction of the heat roller is kept constant irrespective of the size of a sheet of paper P.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: November 2, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Satoshi Kinouchi, Osamu Takagi, Yoshinori Tsueda, Toshihiro Sone
  • Publication number: 20100266316
    Abstract: A transferring and fixing device includes an image carrier member to hold an unfixed toner image, a heat member to heat the unfixed toner image on the image carrier member, a pressure member which comes in press contact with the image carrier member, nips a recording medium with the image carrier member, and presses and conveys the recording medium, and a vibrating member to transmit vibrations to the recording medium passing through between the image carrier member and the pressure member.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 21, 2010
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Ryota SAEKI, Satoshi KINOUCHI, Toshihiro SONE
  • Patent number: 7792450
    Abstract: A fixing device of this invention enables variable control of power to be supplied to a heat roller side or a press roller side in accordance with the temperature of the heat roller and the press roller while each mode is carried out. A secondary battery is used in addition to a commercial power source, thus enabling supply of power to the heat roller side or the press roller side. The secondary battery is used when necessary, thus increasing the power supply. In a copy mode, the temperature of the heat roller and the press roller is controlled in detail. In a non-copy state, the power supply to the fixing device is stopped.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: September 7, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda, Toshihiro Sone
  • Patent number: 7792445
    Abstract: In a drive detection device for a fixing device according to an embodiment of the present invention, a non-paper passing area of a heat roller is formed by a surface where a metal conductive layer is exposed and a surface where a silicon rubber layer is exposed. The drive detection device has an infrared temperature sensor that detects the temperature of the non-paper passing area. When a detection result of the infrared temperature sensor is fluctuated a fixed amount or more in a predetermined time, the drive detection device determines that the heat roller is rotating. Otherwise, the drive detection device determines that the heat roller is not rotating.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: September 7, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Toshihiro Sone, Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda, Tetsuo Kitamura, Hiroshi Nakayama, Yohei Doi, Kazuhiko Kikuchi, Masanori Takai, Toyoyasu Kusaka
  • Patent number: 7787790
    Abstract: A fixing apparatus of the present invention includes a heating roller 2 that is a cylindrical member having a center axis, a pressurizing roller 3 that exerts pressure on the heating roller 2, and a temperature detecting element 6 that detects the temperature of the heating roller 2. The outer peripheral surface of the heating roller 2 is induction heated on the basis of the temperature information detected by the temperature detecting element 6. The fixing apparatus thus utilizes induction heating. The present invention is characterized in that the temperature detecting element 6 is placed in an area located vertically below the center axis of the heating member 2 and vertically below the outer peripheral surface of the heating member. The temperature detecting element 6 is thus provided at a position where it is unlikely to suffer thermal convection from the heating roller 2.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: August 31, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Yoshinori Tsueda, Satoshi Kinouchi, Osamu Takagi, Toshihiro Sone
  • Patent number: 7787789
    Abstract: A fixing device according to an embodiment of the present invention includes a microcomputer that exclusively performs temperature control for the fixing device. The microcomputer periodically calculates electric power that can be supplied to the fixing device. The microcomputer detects the temperature of the fixing device and the temperature in a printer unit and feedback-controls electric power supplied to the fixing device.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: August 31, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Hiroshi Nakayama, Yohei Doi, Tetsuo Kitamura, Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda, Kazuhiko Kikuchi, Masanori Takai, Toyoyasu Kusaka, Toshihiro Sone
  • Patent number: 7778564
    Abstract: In a fixing device of an image forming apparatus of the present invention, inner surfaces of upper and lower frames for respectively supporting a heat roller and a pressure roller are formed as a mirror surface. Between the heat roller and an infrared temperature sensor, an infrared transmission filter for cutting infrared rays beyond a wave length zone equivalent to a heatable area of the heat roller is installed. Detection results of a surface temperature of the heat roller by the infrared temperature sensor are prevented from exceeding the error tolerance due to infrared rays radiated from other than the heat roller. Temperature control for the heat roller is improved and a fixed image of high image quality is obtained.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: August 17, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Toshihiro Sone, Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda
  • Patent number: 7769335
    Abstract: A fixing apparatus according to the present invention ensures a nip width larger than a certain value by a heating roller which has a thin film metal conductive layer, and a foamed rubber layer which is bonded to the end part of the metal conductive layer, formed with a gap in a center part, and not bonded to the metal conductive layer.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: August 3, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda, Toshihiro Sone
  • Patent number: 7751740
    Abstract: A fixing apparatus includes an endless heating member having a metallic conductive layer, and a pressure member pressed to the heating member to form a nip to hold and convey a medium to be fixed. The apparatus also includes an induction heating coil arranged on an outer periphery of the heating member to generate an induced current, and a position sensor to detect a front end of the medium conveyed. The apparatus further includes a controller for controlling so as to increase an output value of the induction heating coil.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: July 6, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Satoshi Kinouchi, Osamu Takagi, Yoshinori Tsueda, Toshihiro Sone
  • Publication number: 20100150596
    Abstract: According to an embodiment, a heating device having a plurality of heating members which heat the heating roller, a first thermoelectric converting section having a plurality of thermoelectric converting elements, each of which has a heat-absorbing surface and a cooling surface and generates electromotive force by difference in temperature between the heat-absorbing surface and the cooling surface, and formed along a curved surface of the heating roller, in which the heat-absorbing surface is disposed with a predetermined space from an outer circumferential surface of the heating roller, an auxiliary power supply charged with electric power generated by the first thermoelectric converting section, and a switching section which switches the apparatus between a first state in which electric power is supplied from utility power to the heating members and a second state in which electric power is supplied from the auxiliary power supply to the heating members, based on a predetermined signal.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 17, 2010
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Toshihiro Sone, Osamu Takagi, Satoshi Kinouchi, Yoshinori Tsueda
  • Publication number: 20100150597
    Abstract: A center coil and side coils alternately operate at least once while a heat belt passes positions corresponding to the center coil and the side coils. A controller controls the operation time of the center coil and the operation time of the side coils according to comparison of detected temperature of a first temperature sensor and detected temperature of a second temperature sensor.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 17, 2010
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Satoshi KINOUCHI, Kazuhiko KIKUCHI, Toshihiro SONE
  • Publication number: 20100150625
    Abstract: According to an embodiment of the invention, a fixing apparatus includes, a first endless body configured to be heated by a heating mechanism and maintain temperature reached by the heating, a second endless body configured to fix a visualizing agent supported by a sheet medium on the sheet medium in cooperation with the first endless body, a heat equalizing member configured to be located in a predetermined position on an inner side of the first endless body and apply, to the first endless body, tension for supplying heat, and a heat accumulating member configured to have a large heat capacity compared with a heat capacity of the heat equalizing member and to be located in a predetermined position on the inner side of the first endless body and apply, to the first endless body, tension for supplying heat.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 17, 2010
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Toshihiro SONE, Kazuhiko KIKUCHI, Satoshi KINOUCHI