Patents by Inventor Tamotsu Ikeda

Tamotsu Ikeda 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: 9116476
    Abstract: A fixing device, including a fixing member; an opposing member contacting the fixing member to form a fixing nip; plural separation assisting members; a contact direction biasing member contacting an end of the auxiliary separation members to the surface of the fixing member; a contact and release switching member switching contacting the end of the auxiliary separation members to the surface of the fixing member and releasing the end of the auxiliary separation members therefrom; a fixing exit guide member guiding a recording medium to a discharge direction and separated from the fixing member by the separation assisting member; a first rotating member near the auxiliary separation members downstream from an end thereof; and a second rotating member guiding a recording medium guided by the fixing exit guide member in the recording medium conveyance direction while rotating.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: August 25, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiharu Takahashi, Chikara Hiraoka, Tamotsu Ikeda, Kohta Sakaya, Yoshihiro Kawakami
  • Patent number: 9112641
    Abstract: The present invention relates to a transmission device that enables transmission and reception of connected transmission channels in a 13-segment format and a transmission method of the transmission device, and to a reception device. The transmission device transmits connected transmission information indicating that connected transmission of a plurality of transmission channels is being performed, the connected transmission information including a field that specifies the modulation method type of each of three or more layers of layered transmission that can be performed on at least one of the transmission channels in the three or more layers. The reception device receives the connected transmission information transmitted by the transmission device. The present invention can be applied to transmission devices that transmit terrestrial digital broadcast signals, for example.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: August 18, 2015
    Assignee: SONY CORPORATION
    Inventors: Tamotsu Ikeda, Takuya Okamoto
  • Patent number: 9100379
    Abstract: Disclosed herein is a transmitting apparatus, including: a stream inputting portion inputting plural transport streams; an information adding portion adding additional information containing therein a stream identifier used to identify at least corresponding transport stream to respective transport stream packets of the plural transport streams thus inputted; a stream synthesizing portion synthesizing the plural transport streams in which the additional information is added to each of the transport stream packets, thereby obtaining one stream; and a stream transmitting portion transmitting the resulting one stream to an external apparatus. The information adding portion adds the additional information forward, backward or midway with respect to each of the transport stream packets.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: August 4, 2015
    Assignee: Sony Corporation
    Inventors: Yuichi Hirayama, Satoshi Okada, Tamotsu Ikeda, Naomichi Kishimoto
  • Patent number: 9073724
    Abstract: A sheet discharge device includes a fixing device that fixes a sheet, a curl correcting device that corrects a curl of the fixed sheet, a first guiding member that guides the fixed sheet in a sheet discharging direction, a second guiding member that guides the fixed sheet in the sheet discharging direction and is arranged on a side opposite to the first guiding member, a support part that rotatably supports the first guiding member, and an engaging part that engages with the support part. The curl correcting device includes a correcting roller that is attached to the first guiding member. The engaging part includes a hole including an oblong shape so that the first guiding member is movable apart from the second guiding member. An image forming apparatus includes an image forming device that forms an image on a sheet, and the sheet discharge device.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: July 7, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Kentaro Uehara, Tamotsu Ikeda, Yoo Dongkyu, Park Sungkyu
  • Publication number: 20150154905
    Abstract: A display panel includes: a driver section configured to generate a first pixel packet including digital luminance data; a plurality of unit pixels successively connected, each of the unit pixels configured to perform a display operation, based on the digital luminance data of the first pixel packet, and one or more of the unit pixels configured to perform a detection operation of a physical quantity thereof to generate a second pixel packet including digital detection data acquired by the detection operation and then output the second pixel packet to a subsequent one of the unit pixels; and a receiver section configured to receive the second pixel packet.
    Type: Application
    Filed: November 5, 2014
    Publication date: June 4, 2015
    Applicant: SONY CORPORATION
    Inventors: Kazukuni Takanohashi, Hideyuki Suzuki, Kazunori Yasuda, Toshiyuki Miyauchi, Tamotsu Ikeda
  • Publication number: 20150146743
    Abstract: There is provided an electronic device including a composite stream generation unit to generate a composite stream by combining transport stream packets of transport streams, a stream transmission unit to transmit the composite stream to an external device, a processing information output unit to output processing information for processing each transport stream packet of the composite stream according to a transmission timing of each transport stream packet, a processing information delay unit to output the processing information with a delay of an amount of time corresponding to a delay time from reception to transmission of the composite stream at the external device, a stream reception unit to receive the composite stream from the external device, and a processing unit to process each transport stream packet of the composite stream based on the processing information that has been output with the delay and corresponds to each transport stream packet.
    Type: Application
    Filed: June 7, 2013
    Publication date: May 28, 2015
    Applicant: Sony Corporation
    Inventors: Yuichi Hirayama, Satoshi Okada, Tamotsu Ikeda, Naomichi Kishimoto
  • Publication number: 20150117901
    Abstract: A process unit includes a rotatable image bearer to bear a toner image on a surface thereof; a developer bearer to supply developer to the image bearer and including a first range, a second range different in property from the first range and adjacent to the first range on an outer side in an axial direction via a first boundary, and a second boundary on an outer side of the first boundary in the axial direction; a cleaning member to remove residual developer from the image bearer; and an abutment part disposed to contact the surface of the image bearer to remove a foreign substance from the image bearer. The abutment part is disposed astride at least one of a first position on the image bearer corresponding to the first boundary, and a second position on the image bearer corresponding to the second boundary.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 30, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Mitsutoshi KICHISE, Kenji NAKAMURA, Takeshi YAMASHITA, Tamotsu IKEDA, Minoru TOYODA, Yasuhide MATSUNO
  • Patent number: 9007409
    Abstract: An optical writing head positioning mechanism includes spacers provided between a latent image carrier for carrying an electrostatic latent image and an optical writing head for exposing the latent image carrier. The spacers each include at least one carrier contact surface that contacts the latent image carrier and at least one head contact surface that contacts the optical writing head to determine an interval between the latent image carrier and the optical writing head. The latent image carrier is in contact with a cleaning member that cleans a cleaning area on a surface of the latent image carrier. In at least one of the spacers, the at least one carrier contact surface includes plural carrier contact surfaces not disposed on edges of the cleaning area, and one of the edges of the cleaning area is located between two adjacent ones of the plural carrier contact surfaces.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: April 14, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Kenji Nakamura, Tamotsu Ikeda, Yasuhide Matsuno, Minoru Toyoda, Masanari Fujita, Takahiro Yoshimi
  • Patent number: 8989641
    Abstract: A fixing device includes a fixing rotary body rotatable in a predetermined direction of rotation; an opposed rotary body contacting the fixing rotary body to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed; a plurality of separation pawls separatably contacting an outer circumferential surface of the fixing rotary body to separate the recording medium discharged from the fixing nip from the fixing rotary body; a temperature detector contacting the outer circumferential surface of the fixing rotary body to detect a temperature of the fixing rotary body; and a fixing rotary body cleaner interposed between the plurality of separation pawls and the temperature detector in the direction of rotation of the fixing rotary body and contacting the outer circumferential surface of the fixing rotary body to clean the outer circumferential surface of the fixing rotary body.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: March 24, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Tamotsu Ikeda
  • Publication number: 20150062204
    Abstract: A display panel includes: a display section including a plurality of unit pixels; and a display drive section configured to generate first pixel packets and supply the first pixel packets to the display section, the first pixel packets each including luminance data of a digital signal, the pieces of luminance data determining respective luminances of respective predetermined number of unit pixels of the plurality of unit pixels, and the first pixel packets being equal in number to the predetermined number of unit pixels.
    Type: Application
    Filed: August 7, 2014
    Publication date: March 5, 2015
    Inventors: Kazukuni TAKANOHASHI, Hideyuki SUZUKI, Toshiyuki MIYAUCHI, Tamotsu IKEDA
  • Publication number: 20150035928
    Abstract: An optical writing head positioning mechanism includes spacers provided between a latent image carrier for carrying an electrostatic latent image and an optical writing head for exposing the latent image carrier. The spacers each include at least one carrier contact surface that contacts the latent image carrier and at least one head contact surface that contacts the optical writing head to determine an interval between the latent image carrier and the optical writing head. The latent image carrier is in contact with a cleaning member that cleans a cleaning area on a surface of the latent image carrier. In at least one of the spacers, the at least one carrier contact surface includes plural carrier contact surfaces not disposed on edges of the cleaning area, and one of the edges of the cleaning area is located between two adjacent ones of the plural carrier contact surfaces.
    Type: Application
    Filed: July 8, 2014
    Publication date: February 5, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Kenji NAKAMURA, Tamotsu IKEDA, Yasuhide MATSUNO, Minoru TOYODA, Masanari FUJITA, Takahiro YOSHIMI
  • Patent number: 8948639
    Abstract: A fixing device includes a pressurization member connected to a pressing rotary body to press the pressing rotary body against a fixing rotary body; a depressurization assembly interposed between the pressing rotary body and the pressurization member and movable between a reduced pressure position where the depressurization assembly causes the pressurization member to press the pressing rotary body against the fixing rotary body with reduced pressure therebetween and an enhanced pressure position where the depressurization assembly is free from pressure from the pressurization member to cause the pressurization member to press the pressing rotary body against the fixing rotary body with enhanced pressure therebetween; a positioner separatably contacting the depressurization assembly to immovably halt the depressurization assembly at the enhanced pressure position; and a position detector separatably contacting the depressurization assembly to detect the position of the depressurization assembly.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: February 3, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshihiro Kawakami, Tamotsu Ikeda, Kaoru Tada
  • Patent number: 8941492
    Abstract: An information receiving apparatus that includes a receiver that receives an alert signal including a predetermined number of bits, and a controller that detects that the alert signal includes alert information by processing a subset of the predetermined number of bits of the alert signal, and outputs an indication corresponding to the detection.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: January 27, 2015
    Assignee: Sony Corporation
    Inventors: Tamotsu Ikeda, Ryuichiro Shimura, Takuya Okamoto, Satoshi Okada
  • Publication number: 20150020112
    Abstract: Provided is a transmitting apparatus including a stream input unit that inputs a transport stream containing PID data packets of a plurality of service channels in a time-division manner, an information addition unit that adds a time stamp corresponding to a time of the input to PID packets remaining after the PID data packets of the service channels that are not selected of the input transport stream are removed, and a stream transmitting unit that successively transmits each of the PID packets to which the time stamp is added to an external device.
    Type: Application
    Filed: January 16, 2013
    Publication date: January 15, 2015
    Inventors: Kazutoyo Sekine, Masahiko Sato, Tamotsu Ikeda
  • Publication number: 20140377578
    Abstract: A welded portion (1) formed at a joint between a plurality of steel plates (10) is formed of a plurality of nuggets (11) arranged along a virtual closed curve (12), and when the thickness of the thinnest steel plate (10) of the steel plates (10) is denoted by t, the diameter d of each nugget (11) is 3 ?t or less, and the pitch p between adjacent nuggets is 2 d or more but no more than 5 d, and the number of nuggets is three or more.
    Type: Application
    Filed: December 19, 2012
    Publication date: December 25, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kohei Hisada, Shuhei Ogura, Atsushi Kawakita, Tamotsu Ikeda, Hidenori Kosugi
  • Publication number: 20140374987
    Abstract: A sheet discharge device includes a fixing device that fixes a sheet, a curl correcting device that corrects a curl of the fixed sheet, a first guiding member that guides the fixed sheet in a sheet discharging direction, a second guiding member that guides the fixed sheet in the sheet discharging direction and is arranged on a side opposite to the first guiding member, a support part that rotatably supports the first guiding member, and an engaging part that engages with the support part. The curl correcting device includes a correcting roller that is attached to the first guiding member. The engaging part includes a hole including an oblong shape so that the first guiding member is movable apart from the second guiding member. An image forming apparatus includes an image forming device that forms an image on a sheet, and the sheet discharge device.
    Type: Application
    Filed: May 30, 2014
    Publication date: December 25, 2014
    Inventors: Kentaro UEHARA, Tamotsu IKEDA, Yoo DONGKYU, Park SUNGKYU
  • Patent number: 8874021
    Abstract: A mechanism for guiding a recording medium into a nip formed between a first rotary member subjected to heating, and a second rotary member pressed against the first rotary member includes a guide member and a biasing member. The guide member is disposed upstream from the nip to guide the recording medium therealong. The biasing member is connected to the guide member to mechanically bias the guide member. The guide member is subjected to a constant biasing force from the biasing member and to a pressure force from the recording medium. The pressure force is opposite the biasing force and variable with a stiffness of the recording medium being guided. The guide member is movable to different operational positions depending on the biasing and pressure forces acting thereon.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: October 28, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Kohta Sakaya, Yasuhide Ohkubo, Tamotsu Ikeda, Yoshiharu Takahashi, Chikara Hiraoka, Toshio Ogiso
  • Patent number: 8867942
    Abstract: A fixing device includes a first opposed body and a second opposed body pressed against the first opposed body. A resilient member exerts a resilient bias to the second opposed body that presses the second opposed body against the first opposed body. A lever assembly is swingable to move the second opposed body against the resilient bias exerted by the resilient member between at least a reduced pressure position where the second opposed body presses against the first opposed body with reduced pressure therebetween and an enhanced pressure position where the second opposed body presses against the first opposed body with enhanced pressure therebetween. A resistance applier engages the lever assembly to exert drag on the lever assembly when the lever assembly moves the second opposed body from the reduced pressure position to the enhanced pressure position.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: October 21, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Tamotsu Ikeda, Kohta Sakaya, Yoshiharu Takahashi, Chikara Hiraoka
  • Publication number: 20140295908
    Abstract: The present technique relates to a transmission device, a transmission method, a reception device, a reception method, and a program capable of reducing interference to an adjacent channel in a case where connected-transmission is performed. A transmission device according to an aspect of the present technique includes a signal generating unit configured to generate a plurality of signals having a predetermined frequency bandwidth, a power adjusting unit configured to adjust power of signals so that the power of a signal transmitted using a frequency band close to an end of a channel is less than the power of the signal transmitted using a frequency band close to a center of the channel, and a transmission unit configured to use the channel to transmit, in a connected manner, the signals of which powers have been adjusted. The present technique can be applied to a transmission device for performing connected-transmission.
    Type: Application
    Filed: October 19, 2012
    Publication date: October 2, 2014
    Applicant: Sony Corporation
    Inventors: Tamotsu Ikeda, Takuya Okamoto, TAkashi Yokokawa, Hidetoshi Kawauchi
  • Publication number: 20140254610
    Abstract: Provided is an electronic apparatus including a synthesized stream creation unit, a stream transmission unit, a process information retaining unit, a count information addition unit, a stream reception unit, and a processing unit.
    Type: Application
    Filed: June 20, 2013
    Publication date: September 11, 2014
    Applicant: Sony Corporation
    Inventors: Yuichi Hirayama, Satoshi Okada, Tamotsu Ikeda, Naomichi Kishimoto