Patents by Inventor Tomonori Kimura

Tomonori Kimura 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: 8215743
    Abstract: A recording apparatus includes a carriage; a first head group including a recording head and disposed on the carriage; and a second head group including a recording head and disposed on the carriage adjacent the first head group in a staggered manner with respect to a sub-scan direction. The carriage is configured to move in a main scan direction in order to record an image on a recording medium. The recording apparatus further includes a forming unit configured to form plural test patterns including a first pattern formed by the recording head of the first head group and a second pattern formed by the recording head of the second head group. The test patterns are spaced apart from one another in the sub-scan direction. The position of the second pattern relative to the first pattern in the sub-scan direction is varied successively from one test pattern to another.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: July 10, 2012
    Assignee: Ricoh Company, Limited
    Inventors: Kazushi Takei, Hiroshi Takahashi, Masato Kobayashi, Tomonori Kimura, Yuichi Sakurada, Arata Suzuki, Nobuyuki Satoh, Yasuo Sakurai
  • Patent number: 8191986
    Abstract: An image forming apparatus is disclosed that includes a recording head having a plurality of nozzles and scanning in forward and backward scanning directions to form dot images on the recording medium, an imaging unit imaging an image on the recording medium, a detection unit detecting a positional shift amounts of the dot images and inclination amounts of the recording head based on calibration image data obtained by imaging two first marks and two second marks in a single view by the imaging unit, and a correction unit correcting a drive of the recording head based on the detected positional shift amounts and the inclination amounts of the recording head.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: June 5, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Takahashi, Masato Kobayashi, Tomonori Kimura, Kazushi Takei, Yuichi Sakurada, Nobuyuki Satoh, Yasuo Sakurai
  • Patent number: 8184377
    Abstract: A zoom lens includes, in order from an object-side to an image-plane-side: a positive first lens unit; a negative second lens unit; a stop; a positive third lens unit; a negative fourth lens unit; and a positive fifth lens unit, wherein: during zooming, the first lens unit moves along a locus convex toward the image-plane-side, the second lens unit moves toward the image-plane-side, and the stop moves; at the telephoto end compared with the wide angle end, an interval between the first lens unit and the second lens unit increases, an interval between the second lens unit and the third lens unit decreases, and an interval between the aperture stop and the third lens unit decreases, focal lengths of the fourth lens unit, a focal length of an entire system at the telephoto end, and a movement amount of the first lens unit are appropriately set.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: May 22, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tomonori Kimura
  • Publication number: 20120113516
    Abstract: A zoom lens includes first to fifth lens units having positive, negative, positive, negative, and positive refractive powers. During zooming, the fourth lens unit having a positive lens and a negative lens does not move, and the second, third, and fifth lens units move. The fourth lens unit moves to have a component perpendicular to the optical axis. The focal length of the entire system at the telephoto end, the focal length of the fourth lens unit, the focal length and the material of the positive lens of the fourth lens unit, the maximum moving distance, at the telephoto end, of the fourth lens unit, the lateral magnification of the fourth lens unit at the telephoto end, and the lateral magnification, at the telephoto end, of a lens system disposed at the image plane side with respect to the fourth lens unit are appropriately set.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 10, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Tomonori Kimura
  • Patent number: 8154236
    Abstract: An EPC connected between a three phase motor and a battery fixes a voltage of the V phase of the three phase motor to a voltage potential of a positive electrode of the battery. A converter unit is placed for each of the U and W phases of the three phase motor. Each of the converter units has a chopper circuit part and a capacitor. Each of the converter units converts the voltage of the battery to a desired voltage. The voltage of each of V and W phases is adjusted until the voltage of being twice of the voltage of the battery based on the voltage potential at the positive electrode of the battery as a reference voltage. This makes it possible to adjust the absolute value of a line voltage between V and W phases until the voltage of the battery as an upper limit voltage.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: April 10, 2012
    Assignee: Denso Corporation
    Inventor: Tomonori Kimura
  • Patent number: 8154230
    Abstract: A control apparatus is to drive a power converter. The power converter has a power supply unit, a switching member electrically connected to the power supply unit, and a power accumulator electrically connected to the switching member. The control apparatus controls a rotary machine with a terminal electrically connected to the power accumulator. A calculator calculates, based on a command voltage to the rotary machine, a command value for an output current to the power accumulator and the rotary machine. A chopper control unit carries out chopper control of the power converter by switching on and off the switching member based on the command value for the output current to thereby convert a voltage across the power accumulator into a desired voltage relation to a voltage of the power supply unit.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: April 10, 2012
    Assignee: Denso Corporation
    Inventor: Tomonori Kimura
  • Patent number: 8134783
    Abstract: A zoom lens system, in which chromatic aberration, spherical aberration, and coma may be excellently corrected in a balanced manner so as to obtain excellent optical performance over an entire zoom range, includes, in order from an object side to an image side: a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; and a rear lens group including a lens unit having a positive refractive power, in which: at least one of the first lens unit and the second lens unit is moved for zooming so that an interval therebetween at a telephoto end is larger than an interval at a wide angle end; the first lens unit includes at least one negative lens; and an Abbe number (?d1n) and a partial dispersion ratio (?gF1n) of a material of the at least one negative lens are appropriately set.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: March 13, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichiro Saito, Nobuyuki Miyazawa, Tomonori Kimura
  • Patent number: 8102687
    Abstract: The control apparatus is for controlling a power conversion apparatus with a chopper circuit including at least one voltage-controlled type switching element provided with a drive circuit, and a coil to generate back electromotive force. The control apparatus includes a function of outputting an operation command signal to the drive circuit to control an output voltage of the power conversion apparatus, a second function of setting, on the basis a current flowing through the switching element, a switching speed of the switching element to such a value that noise exceeding a withstand voltage between a conduction control terminal and an output terminal of the switching element can be prevented from occurring when the switching element is switched, and a third function of adjusting the drive circuit to drive the switching element such that the switching element is switched at the switching speed set by the second function.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: January 24, 2012
    Assignee: Denso Corporation
    Inventors: Hisashi Takasu, Tomonori Kimura
  • Patent number: 8094474
    Abstract: A drive controller is provided, for controlling driving of a power conversion circuit. The power control circuit includes a switching element for increasing/decreasing an absolute value of current passing through a coil by repeating electrical ON/OFF operation, so that voltage of power storage means is converted to a desired value required by power supply means, the switching element being provided for each positive/negative polarity of output current outputted from a circuit other than the power storage means, to the power storage means. Meanwhile, the drive controller includes energy loading means and OFF-state setting means. The energy loading means loads energy on the coil through a switching element not corresponding to existing polarity of the output current, after the absolute value has been zeroed by the turn OFF of the switching element corresponding to the existing polarity, but preceding an ON operation of the switching element corresponding to the existing polarity.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: January 10, 2012
    Assignee: Denso Corporation
    Inventor: Tomonori Kimura
  • Publication number: 20110254994
    Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a rear lens unit including one or more lens units. An interval between respective adjacent lens units varies during zooming such that an interval between the first lens unit and the second lens unit is larger at a telephoto end than at a wide-angle end and an interval between the second lens unit and the third lens unit is smaller at the telephoto end than at the wide-angle end. The third lens unit includes at least one negative lens. An Abbe number (?d3n) and a relative partial dispersion (?gF3n) of a material of the negative lens are appropriately set based on predetermined conditional expressions.
    Type: Application
    Filed: April 13, 2011
    Publication date: October 20, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinichiro Saito, Nobuyuki Miyazawa, Tomonori Kimura
  • Publication number: 20110211265
    Abstract: A zoom lens includes positive, negative, positive, and positive lens units, and the second lens unit includes negative, negative, negative and positive lenses. The first and third lens units are fixed and the second and fourth lens units are moved in zooming. 0.01<|f2/?(fw*ft)|<0.35 and 0.070<D2/TL<0.105 are satisfied. fw and ft are focal lengths of an overall system at wide angle and telephoto ends, f2 is a focal length of the second lens unit, TL is a distance on an optical axis from a lens surface closest to an object plane to an image plane when a distance from a lens surface closest to the image plane to the image plane is aerially converted, and D2 is a distance on the optical axis from a lens surface closest to the object plane in the second lens unit to the lens surface closest to the image plane in the second lens unit.
    Type: Application
    Filed: February 18, 2011
    Publication date: September 1, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tomonori KIMURA, Akihisa HORIUCHI
  • Patent number: 8009228
    Abstract: A camera includes a direction indicating switch to specify an arbitrary indicating direction which is attached to a case member. The direction indicating switch has a switch base having a contact point which is capable of abutting intermittently; an operating section held by the switch base to be capable of tilting for tilting for intermittently abutting of the contact point; and a tilt controlling section which controls a tilt of the operating section. The operating section is capable of tilting in a radial direction from a reference position where the contact point is in a nonconductive state. When the operating section is tilted over a predetermined angle from the reference position, the contact point is in a conductive state.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: August 30, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomonori Kimura, Kimiharu Yanagisawa
  • Publication number: 20110205275
    Abstract: A recording device having a recording head including a nozzle line that eject ink from nozzles arranged in a transfer direction of a recording medium, a carriage, a moving device that moves the carriage forward and backward, a transfer device that transfers the recording medium, an ejection control device that forms a detection pattern by ejecting the ink, a two-dimensional sensor that detects the detection pattern, an analyzer that analyzes the image data of the detection pattern, and a detection device that detects misalignment of the printed dots, the ejection control device having a first dot group formation device that forms a first dot group, a second dot group formation device that forms a second dot group, and a third dot group formation device that forms a third dot group, the detection pattern being formed of the first dot group, the second dot group, and the third dot group.
    Type: Application
    Filed: February 4, 2011
    Publication date: August 25, 2011
    Applicant: Ricoh Company, Ltd.
    Inventors: Tomonori Kimura, Yasuo Sakurai, Nobuyuki Satoh, Masato Kobayashi, Yuichi Sakurada, Arata Suzuki
  • Patent number: 7995286
    Abstract: A zoom lens includes first to fourth lens units in order from the object side to the image side. The first, third, and fourth lens units have a positive refractive power. The second lens unit has a negative refractive power. During zooming from a wide-angle end to a telephoto end, the first lens unit moves along a locus convex toward the image side, the second lens unit moves along a locus convex toward the image side from the wide-angle end to an intermediate zoom position and along a locus convex toward the object side from the intermediate zoom position to the telephoto end, and the third lens unit moves such that the distance to the second lens unit at the telephoto end is smaller than that at the wide-angle end. Focal lengths of the first lens unit and the entire lens system at the telephoto end are adequately set.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: August 9, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tomonori Kimura
  • Publication number: 20110141577
    Abstract: A zoom lens includes, in order from an object-side to an image-plane-side: a positive first lens unit; a negative second lens unit; a stop; a positive third lens unit; a negative fourth lens unit; and a positive fifth lens unit, wherein: during zooming, the first lens unit moves along a locus convex toward the image-plane-side, the second lens unit moves toward the image-plane-side, and the stop moves; at the telephoto end compared with the wide angle end, an interval between the first lens unit and the second lens unit increases, an interval between the second lens unit and the third lens unit decreases, and an interval between the aperture stop and the third lens unit decreases, focal lengths of the fourth lens unit, a focal length of an entire system at the telephoto end, and a movement amount of the first lens unit are appropriately set.
    Type: Application
    Filed: November 5, 2010
    Publication date: June 16, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Tomonori Kimura
  • Publication number: 20110122184
    Abstract: An image forming apparatus including a first carriage having a print head independently movable in a main scanning direction, a second carriage having a print head movable with the first carriage, an encoder sheet, first and second home position reference units provided to the first and second carriages, a home position detector that detects the first and second home position reference units, and first and second position detectors provided to the first and second carriages, which detect positions of the first and second carriages by reading the encoder sheet. A control unit controls ejection of ink from the print head of the first carriage based on an output from the first position detector, and ejection of ink from the print head of the second carriage based on the output from the second position detector.
    Type: Application
    Filed: November 22, 2010
    Publication date: May 26, 2011
    Inventors: Tomonori Kimura, Yasuo Sakurai, Yuichi Sakurada, Arata Suzuki
  • Patent number: 7932685
    Abstract: The control apparatus for a power conversion apparatus having chopper circuits and a capacitor, each of which includes a switching circuit and a coil, the switching circuit being on/off-controlled in accordance with specific timings determined in accordance with a current flowing through the coil to create required voltage in the capacitor, includes a function of evenly dividing an interval between adjacent specific timings of one of the chopper circuits to produce divided timings to be allocated to the other chopper circuits, and a function of setting, for each of the other chopper circuits, an on-time period of the switching circuit such that, when the interval varies as a result of which the specific timing of each of the other chopper circuits deviates from a corresponding one of the divided timings, an interval between adjacent specific timings of each of the other chopper circuits is varied to reduce the deviation.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: April 26, 2011
    Assignee: Denso Corporation
    Inventors: Seikoh Arimura, Tomonori Kimura
  • Publication number: 20110080653
    Abstract: A zoom lens system comprises, from an object side to an image side: a first lens unit; a second lens unit; a third lens unit; a fourth lens unit; and a fifth lens unit having positive refractive power, wherein: in zooming from a wide angle end to a telephoto end, the first, the second, the third, and the fourth lens units move so that an interval between the first and the second lens units is larger at the telephoto end than that at the wide angle end, an interval between the second and the third lens units is smaller at the telephoto end than that at the wide angle end, and a distance between the third and the fourth lens units varies; and a focal length of the first lens unit, and focal lengths of an entire system at the wide angle end and the telephoto end are appropriately set.
    Type: Application
    Filed: October 6, 2010
    Publication date: April 7, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Tomonori KIMURA
  • Patent number: 7872813
    Abstract: An optical element having an optical surface and at least three convex portions on a surface different from the optical surface, wherein, among the at least three convex portions, two convex portions a space between whose centers is a maximum and one convex portion a length of a perpendicular from whose center to a straight line connecting centers of the two convex portions is a maximum satisfy a relationship of tan?1 (h/p)?a first specification value, wherein h is a greater one of heights of the optical element at centers of the two convex portions with reference to a tangential plane of the optical element at a position of a foot of the perpendicular, and p is a length of the perpendicular.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: January 18, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomonori Kimura, Eiichi Hayashi, Yasuo Yamanaka
  • Publication number: 20110007112
    Abstract: A recording apparatus includes a carriage; a first head group including a recording head and disposed on the carriage; and a second head group including a recording head and disposed on the carriage adjacent the first head group in a staggered manner with respect to a sub-scan direction. The carriage is configured to move in a main scan direction in order to record an image on a recording medium. The recording apparatus further includes a forming unit configured to form plural test patterns including a first pattern formed by the recording head of the first head group and a second pattern formed by the recording head of the second head group. The test patterns are spaced apart from one another in the sub-scan direction. The position of the second pattern relative to the first pattern in the sub-scan direction is varied successively from one test pattern to another.
    Type: Application
    Filed: July 12, 2010
    Publication date: January 13, 2011
    Applicant: Ricoh Company, Ltd.
    Inventors: Kazushi Takei, Hiroshi Takahashi, Masato Kobayashi, Tomonori Kimura, Yuichi Sakurada, Arata Suzuki, Nobuyuki Satoh, Yasuo Sakurai