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: 8798517
    Abstract: A sheet supplying device that is incorporatable in an image forming apparatus includes a recording media container, a sheet feeding unit to feed a recording medium from the recording media container, and a frame to support the recording media container and the sheet feeding unit. The recording media container is detachably attachable to the frame in a first operation in which the recording media container is moved in a sheet conveyance direction in which the recording medium is conveyed upstream or downstream by the sheet feeding unit, and the recording media container is separated from the frame and the sheet feeding unit with the sheet feeding unit remaining in the frame, and a second operation in which the recording media container is moved in a direction perpendicular to the sheet conveyance direction, and the recording media container is separated from the frame together with the sheet feeding unit.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: August 5, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuo Matsuyama, Ippei Kimura, Ikuo Fujii, Takamitsu Ikematsu, Masafumi Takahira, Kaoru Tada, Tomoyoshi Yamazaki, Toru Hanashima, Chikara Hiraoka, Tamotsu Ikeda, Kazuyoshi Kondo
  • Patent number: 8792322
    Abstract: A transmitting apparatus for transmitting signals in a multi carrier system on the basis of a frame structure, each frame including at least two signalling patterns adjacent to each other in the frequency direction and at least two data patterns, the transmitting apparatus including signalling mapping means to map signalling data on frequency carriers of each of the at least two signalling patterns in a frame, each signalling pattern having the same length, data mapping means to map data on frequency carriers of the at least two data patterns in a frame, transforming means to transform the signalling patterns and the data patterns from the frequency domain into the time domain in order to generate a time domain transmission signal, and transmitting means to transmit the transmission signal. A corresponding transmitting method and a frame pattern for a multi carrier system are also provided.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: July 29, 2014
    Assignee: Sony Corporation
    Inventors: Lothar Stadelmeier, Samuel Asangbeng Atungsiri, Martin Lovell, Tamotsu Ikeda
  • Publication number: 20140164565
    Abstract: Provided is a transmission device including a stream input unit configured to input a plurality of streams each constituted of continuous packets, a stream synthesizing unit configured to synthesize the plurality of input streams to obtain one stream, and a stream transmission unit configured to transmit the one obtained stream. The stream synthesizing unit encodes at least a typical pattern portion of each packet of the plurality of streams using keys that are intrinsic to the respective streams for separation of packets of each stream on a reception side, and thereafter performs time-division multiplexing on the packets of the plurality of streams to obtain the one stream.
    Type: Application
    Filed: March 15, 2013
    Publication date: June 12, 2014
    Applicant: SONY CORPORATION
    Inventors: Masahiko Sato, Kazutoyo Sekine, Tamotsu Ikeda
  • Patent number: 8699929
    Abstract: A guide device includes a fixing exit guide, a first rotary body, a second rotary body disposed downstream from the first rotary body in a recording medium conveyance direction and partially protruding from a guide face through a slot of the fixing exit guide to contact and support an image side of a recording medium conveyed over the second rotary body, and at least one guide rib mounted on the guide face of the fixing exit guide and extending substantially in the recording medium conveyance direction. The guide rib includes a contact face contacting the image side of the recording medium and a downstream end disposed downstream from the contact face in the recording medium conveyance direction to overlap the second rotary body in cross-section taken along a direction orthogonal to an axial direction of the second rotary body.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: April 15, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Kohta Sakaya, Yoshiharu Takahashi, Tamotsu Ikeda, Chikara Hiraoka
  • Patent number: 8599015
    Abstract: A receiving device includes: a receiving section configured to output a detection flag indicating that warning information is transmitted or at least part of the warning information if the warning information is transmitted; and a controlling section configured to start processing for outputting warning if the detection flag or the at least part of the warning information is supplied, wherein the supply of the detection flag or the at least part of the warning information to the controlling section is carried out by input of the detection flag or the at least part of the warning information output from a pin of a first semiconductor chip on which the receiving section is mounted to a pin of a second semiconductor chip on which the controlling section is mounted.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: December 3, 2013
    Assignee: Sony Corporation
    Inventors: Tamotsu Ikeda, Ryuichiro Shimura, Takuya Okamoto, Satoshi Okada
  • Publication number: 20130308655
    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: Application
    Filed: May 10, 2013
    Publication date: November 21, 2013
    Applicant: Sony Corporation
    Inventors: Yuichi Hirayama, Satoshi Okada, Tamotsu Ikeda, Naomichi Kishimoto
  • Publication number: 20130259516
    Abstract: An image forming apparatus includes a detachable latent image bearer, a casing including a cover opened and closed when the latent image bearer is detached and attached thereto, an LED array head opposed to the latent image bearer, and a rotation mechanism to rotate the LED array head in synchrony with either insertion and removal operation of the latent image bearer or opening operation of the cover.
    Type: Application
    Filed: February 28, 2013
    Publication date: October 3, 2013
    Applicant: Ricoh Company, Ltd.
    Inventors: Tamotsu IKEDA, Kuniyori TAKANO
  • Publication number: 20130242108
    Abstract: Disclosed herein is an image transmission system including a plurality of cameras and a coaxial cable for transmitting image signals from the cameras, wherein: each of the cameras includes an imaging block configured to acquire an image signal by imaging an object, a coding block configured to compression-code the image signal through intra-frame compression and inter-frame compression so as to generate a coded signal, and a signal output block configured to output the coded signal onto the coaxial cable; and the camera of interest outputs the coded signal obtained through inter-frame compression onto the coaxial cable when another of the cameras outputs the coded signal obtained through intra-frame compression onto the coaxial cable.
    Type: Application
    Filed: February 21, 2013
    Publication date: September 19, 2013
    Applicant: SONY CORPORATION
    Inventors: Hideyuki MATSUMOTO, Tamotsu Ikeda, Tetsuya Narita
  • Patent number: 8537933
    Abstract: Disclosed herein is a receiving device, including a receiving section configured to receive only a partial segment among a plurality of segments obtained by dividing a frequency band of one physical channel when the receiving device is in a waiting state, and return from the waiting state to an activated state when warning information is transmitted, if transmission of the warning information by the partial segment is possible.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: September 17, 2013
    Assignee: Sony Corporation
    Inventors: Tamotsu Ikeda, Satoshi Okada, Ryuichiro Shimura, Takuya Okamoto
  • Publication number: 20130235194
    Abstract: Disclosed herein is an imaging apparatus including: an imaging portion capturing an image of a subject, thereby acquiring a video signal; a first coding portion compression-coding the video signal through intra-frame compression and inter-frame compression, thereby generating a first coded signal; a second coding portion compression-coding the video signal through the intra-frame compression, thereby generating a second coded signal an amount of information on which is less than that of the first coded signal; and a signal sending portion sending the first coded signal and the second coded signal to a coaxial cable.
    Type: Application
    Filed: February 13, 2013
    Publication date: September 12, 2013
    Applicant: Sony Corporation
    Inventors: Hideyuki MATSUMOTO, Tamotsu IKEDA
  • Patent number: 8498560
    Abstract: A fixing device and an image forming apparatus using this, in which even if permanent warping is produced on a roller member that forms a fixing nip portion, no collision sound is produced due to the collision of gears, the fixing device including: two roller members that form a nip portion in which a recording medium is pressed by pressure means and transported; and a drive gear that engages with a shaft portion of one of the two roller members and transmits driving force to that roller member. A key is formed in the drive gear and a key groove having a gap opened therein is formed in the shaft portion, and when a rotation velocity of the roller member increases, transmission of driving force from the drive gear to the shaft portion is suspended and the drive gear slides on the shaft portion.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: July 30, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Kohta Sakaya, Shigeo Nanno, Tamotsu Ikeda
  • Publication number: 20130177101
    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 that indicates that connected transmission of a plurality of transmission channels is being performed, and includes a field indicating that a 13-segment format is at least one segment format among the transmission channels being subjected to the connected transmission. 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: Application
    Filed: October 11, 2011
    Publication date: July 11, 2013
    Applicant: SONY CORPORATION
    Inventors: Tamotsu Ikeda, Takuya Okamoto
  • Publication number: 20130170570
    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: Application
    Filed: October 11, 2011
    Publication date: July 4, 2013
    Applicant: Sony Corporation
    Inventors: Tamotsu Ikeda, Takuya Okamoto
  • Patent number: 8417137
    Abstract: A fixing device includes a rotary fixing member, a counter member to contact the rotary fixing member, a first heater to heat the rotary fixing member, a driving unit to rotate the rotary fixing member, a temperature detector to detect a temperature of the rotary fixing member, and a contact-and-separation unit to switch between contact and separation states of the rotary fixing member relative to the counter member. In a temperature-raising operation, the driving unit causes the rotary fixing member to rotate when the temperature detector detects that the temperature of the rotary fixing member has reached a first setting temperature. The contact-and-separation unit causes the rotary fixing member in rotation and the counter member to contact each other when the temperature detector detects that the temperature of the rotary fixing member has reached a second setting temperature that is higher than the first setting temperature.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: April 9, 2013
    Assignee: Ricoh Company Limited
    Inventors: Yutaka Naitoh, Toshio Ogiso, Tamotsu Ikeda
  • Patent number: 8364051
    Abstract: A fixing device includes a cylindrical fixing member, having an external circumferential surface including a crown portion curved radially outward and a inverted-crown portion curved radially inward, a pressing unit including a convexity and a concavity formed on a facing surface facing the fixing member, a first heating member to heat the fixing member, corresponding to the crown portion of the fixing member, a second heating member to heat the fixing member, corresponding to the inverted-crown portion of the fixing member, a temperature detector to detect a surface temperature of the fixing member, and a controller to control the first heating member and the second heating member independently. The pressing unit presses against the fixing member while the crown portion and the inverted-crown portion of the fixing member match the concavity and the convexity of the pressing unit, respectively, forming a curved fixing nip therebetween.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: January 29, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Kohta Sakaya, Yoshihiro Fukuhta, Tamotsu Ikeda
  • Publication number: 20130004217
    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: Application
    Filed: May 15, 2012
    Publication date: January 3, 2013
    Inventors: TAMOTSU IKEDA, KOHTA SAKAYA, YOSHIHARU TAKAHASHI, CHIKARA HIRAOKA
  • Publication number: 20130004216
    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: Application
    Filed: May 31, 2012
    Publication date: January 3, 2013
    Inventor: Tamotsu IKEDA
  • Publication number: 20130004192
    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: Application
    Filed: June 8, 2012
    Publication date: January 3, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yoshihiro Kawakami, Tamotsu Ikeda, Kaoru Tada
  • Publication number: 20130004214
    Abstract: A guide device includes a fixing exit guide, a first rotary body, a second rotary body disposed downstream from the first rotary body in a recording medium conveyance direction and partially protruding from a guide face through a slot of the fixing exit guide to contact and support an image side of a recording medium conveyed over the second rotary body, and at least one guide rib mounted on the guide face of the fixing exit guide and extending substantially in the recording medium conveyance direction. The guide rib includes a contact face contacting the image side of the recording medium and a downstream end disposed downstream from the contact face in the recording medium conveyance direction to overlap the second rotary body in cross-section taken along a direction orthogonal to an axial direction of the second rotary body.
    Type: Application
    Filed: June 18, 2012
    Publication date: January 3, 2013
    Inventors: Kohta SAKAYA, Yoshiharu Takahashi, Tamotsu Ikeda, Chikara Hiraoka
  • Publication number: 20130004222
    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: Application
    Filed: June 28, 2012
    Publication date: January 3, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventors: Kohta Sakaya, Yasuhide Ohkubo, Tamotsu Ikeda, Yoshiharu Takahashi, Chikara Hiraoka, Toshio Ogiso