Patents by Inventor Mamoru Yorimoto

Mamoru Yorimoto 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: 20130242319
    Abstract: An imaging unit includes a frame having an opening; a sensor unit that captures, via the opening, a subject located outside the frame; a reference chart unit that is arranged on the frame and is captured by the sensor unit together with the subject; and a cover member that covers the opening.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 19, 2013
    Inventors: Yasuyuki SUZUKI, Nobuyuki Satoh, Mamoru Yorimoto, Suguru Yokozawa, Yuichi Sakurada, Masato Kobayashi, Tatsuhiko Okada, Tomokazu Kanzawa, Daisaku Horikawa, Hiroshi Matsumoto, Ryo Honda, Makoto Moriwaki
  • Publication number: 20130242321
    Abstract: An image capturing unit includes a sensor unit that captures a predetermined area including a subject; a reference chart that is arranged in the predetermined area and captured together with the subject by the sensor unit; an optical path length changing member that is arranged on an optical path extending from the subject to the sensor unit and is capable of changing a length of the optical path.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 19, 2013
    Inventors: Tatsuhiko OKADA, Nobuyuki Satoh, Yasuyuki Suzuki, Mamoru Yorimoto, Masato Kobayashi, Yuichi Sakurada, Suguru Yokozawa, Tomokazu Kanzawa, Daisaku Horikawa, Hiroshi Matsumoto
  • Patent number: 8529012
    Abstract: An image forming apparatus including a first carriage having at least two first recording heads, a second carriage separatably dockable with the first carriage, a pattern forming unit to control the at least two first recording heads to form on a recording medium adjustment patterns for correcting a shift in landing positions of liquid droplets ejected from the at least two first recording heads, a pattern detector provided to the first carriage to read the adjustment patterns, and a landing position corrector to correct the shift in the landing positions of the liquid droplets based on a result obtained by the pattern detector. The at least two first recording heads form multiple rows of the adjustment patterns, and the pattern detector successively reads at least two rows of the multiple rows of the adjustment patterns without docking and separation of the first and second carriages.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: September 10, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Mamoru Yorimoto, Ichiro Komuro, Shinichiro Naruse, Soichi Saiga, Ryusuke Mase
  • Publication number: 20130229671
    Abstract: An image capturing unit includes a sensor section that images a predetermined range including a subject; a reference chart section that is imaged by the sensor section with the subject; and an illumination light source that illuminates the subject and the reference chart section. The illumination light source is arranged at a position where a mirror reflection region that mirror reflects light entering from the illumination light source to the sensor section is outside a region of the subject and the reference chart section.
    Type: Application
    Filed: February 28, 2013
    Publication date: September 5, 2013
    Inventors: Suguru YOKOZAWA, Nobuyuki Satoh, Yasuyuki Suzuki, Masato Kobayashi, Yuichi Sakurada, Mamoru Yorimoto, Tatsuhiko Okada, Daisaku Horikawa, Masahiro Shigemoto, Kazushi Takei, Hideaki Suzuki, Satoshi Iwanami
  • Publication number: 20130208289
    Abstract: A color measuring device includes a unit configured to calculate a reference-value matrix for converting imaged reference RGB value of a reference color patch a reference colorimetric value of the reference color patch; a unit configured to convert a color-measurement RGB value of a color measurement object into an imaged colorimetric value of the color measurement object by using the corresponding reference-value matrix; a unit configured to select reference color patches of which the reference colorimetric values each have a close distance from the imaged colorimetric value in the predetermined color space; a unit configured to select, as selection RGB values, the imaged reference RGB values of the selected patches; a unit configured to calculate a selection-RGB-value matrix for converting the selection RGB values into the reference colorimetric values; and a unit configured to convert the color-measurement RGB value into a colorimetric value by using the selection-RGB-value matrix.
    Type: Application
    Filed: February 15, 2013
    Publication date: August 15, 2013
    Inventors: Nobuyuki SATOH, Yasuyuki Suzuki, Masato Kobayashi, Yuichi Sakurada, Suguru Yokozawa, Mamoru Yorimoto, Tatsuhiko Okada, Daisaku Horikawa, Ryo Honda
  • Publication number: 20130135484
    Abstract: An image capturing unit includes a sensor unit that image-captures a predetermined area including a subject; and a reference chart unit that is arranged in the predetermined area and captured with the subject by the sensor unit.
    Type: Application
    Filed: November 28, 2012
    Publication date: May 30, 2013
    Inventors: Nobuyuki SATOH, Yasuyuki Suzuki, Masato Kobayashi, Suguru Yokozawa, Tatsuhiko Okada, Mamoru Yorimoto, Daisaku Horikawa, Yuichi Sakurada
  • Patent number: 8425006
    Abstract: An image forming apparatus including a first carriage having a recording head that ejects black liquid droplets and is movable in a main scanning direction, a second carriage having a recording head that ejects color liquid droplets and is detachably attachable to the first carriage to move in the main scanning direction together with the first carriage while attached to the first carriage, and a cap member that caps the recording head of the second carriage while the first carriage is moving with the second carriage separated from the first carriage. Attachment and detachment of the second carriage to and from the first carriage are performed within a scanning range through which the first carriage is movable.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: April 23, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryusuke Mase, Ichiro Komuro, Mamoru Yorimoto, Shinichiro Naruse, Soichi Saiga
  • Patent number: 8414105
    Abstract: An image forming apparatus including a first carriage having a first recording head and a first lifting/lowering unit, a second carriage having a second recording head and a second lifting/lowering unit, a drive source, a drive coupling unit provided to the drive source, a first coupling unit, a second coupling unit, a docking/separation unit that docks and separates the first and second carriages, and an accommodation/coupling unit. A first end of the second coupling unit is coupled to the drive coupling unit, and the accommodation/coupling unit couples the first coupling unit to a second end of the second coupling unit and accommodates the first coupling unit within the first carriage to uncouple the first coupling unit from the second end of the second coupling unit. Accommodation and coupling of the first coupling unit are performed in conjunction with docking and separation of the first and second carriages.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: April 9, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Ichiro Komuro, Shinichiro Naruse, Mamoru Yorimoto, Ryusuke Mase, Soichi Saiga
  • Publication number: 20130027457
    Abstract: A disclosed image forming apparatus includes a reading unit including a light emitting element for emitting light to a record medium, and a light receiving element for receiving reflected light; a print data storing unit storing print data of a uniform pattern which has a color different from a color of the test pattern and is provided in an area including the test pattern, a pattern forming unit printing the test pattern on the uniform pattern after the uniform pattern is printed, a relatively moving unit moving the record medium or the reading unit relatively at a constant speed, a first detection data obtaining unit obtaining first detection data received as the reflection light while the light moves and impinges on the test pattern, and a position detecting unit providing a calculation for determining a position of a line of the test pattern to detect the test pattern.
    Type: Application
    Filed: July 26, 2012
    Publication date: January 31, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventors: Atsushi YAMAZAKI, Tatsuhiko OKADA, Mamoru YORIMOTO, Daisaku HORIKAWA, Makoto MORIWAKI
  • Patent number: 8308272
    Abstract: An image forming apparatus including a first carriage movable in a main scanning direction, a second carriage separatably dockable with the first carriage, a first positioning unit to position the second carriage relative to the first carriage in a sub-scanning direction, a second positioning unit to position the second carriage relative to the first carriage in a rotary direction, and a third positioning unit to position the second carriage relative to the first carriage in the main scanning direction. The first positioning unit includes a reference shaft and notched positioning members to engage the reference shaft. The second positioning unit contacts one of the first and second carriages in the rotary direction upon docking of the first and second carriages. The third positioning unit includes a positioning member, parallel grooved members in the sub-scanning direction, and parallel shafts extending in the sub-scanning direction to engage the grooved members.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: November 13, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinichiro Naruse, Ichiro Komuro, Mamoru Yorimoto, Soichi Saiga, Ryusuke Mase
  • Publication number: 20120229546
    Abstract: An image forming apparatus which reads a test pattern formed onto a recording medium to adjust an ejection timing of liquid droplets is disclosed. The apparatus includes a reading unit; a pattern data storage unit; an image forming unit; a relative movement unit; an intensity data obtaining unit which obtains intensity data on a reflected light which is received by a light receiving unit from a scanning position of a light while the light moves over the test pattern; and a position detecting unit which applies a line position determining operation on the intensity data and detects a line position.
    Type: Application
    Filed: March 7, 2012
    Publication date: September 13, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tatsuhiko Okada, Mamoru Yorimoto, Daisaku Horikawa, Makoto Moriwaki
  • Publication number: 20120218340
    Abstract: An image forming apparatus is disclosed which reads a test pattern, including a reading unit, a relative movement unit, a second detected data obtaining unit which obtains one or more second detected data sets of a reflected light which is received from a scanning position of a light by a light receiving unit while the reading unit moves relatively with respect to the recording medium before the test pattern is formed, a first detected data obtaining unit which obtains one or more first detected data sets of the reflected light which is received by the light receiving unit when the light moves over the test pattern at generally the same scanning position as the scanning position while the reading unit moves relatively with respect to the recording medium after the test pattern is formed, and a signal correction unit.
    Type: Application
    Filed: February 21, 2012
    Publication date: August 30, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Daisaku Horikawa, Mamoru Yorimoto, Tatsuhiko Okada, Makoto Moriwaki
  • Publication number: 20120218568
    Abstract: An image forming apparatus which reads a test pattern formed by ejecting liquid droplets onto a recording medium to adjust an ejection timing of the liquid droplets is disclosed. The image forming apparatus includes an image forming unit; a reading unit; a relative movement unit; an intensity data obtaining unit which obtains intensity data on a reflected light which is received from a scanning position of a light by a light receiving unit while the light moves over the test pattern; and a position detection unit which applies a line position determining operation on the intensity data in the vicinity of a point of inflection included between an upper-limit threshold value and a lower-limit threshold value, and detects a position of a line.
    Type: Application
    Filed: February 15, 2012
    Publication date: August 30, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Mamoru Yorimoto, Tatsuhiko Okada, Daisaku Horikawa, Makoto Moriwaki
  • Publication number: 20120218336
    Abstract: An image forming apparatus is disclosed which reads a test pattern formed by ejecting liquid droplets onto a recording medium to adjust an ejection timing of the liquid droplets. The image forming apparatus includes a reading unit; a relative movement unit; a second detected data obtaining unit; a first detected data obtaining unit; a subtraction processing unit which subtracts a value comparable to a local minimum value of first detected data sets from each of the first detected data sets and second detected data sets; and a signal correction unit which calculates a proportion of the subtracted first detected data sets relative to the subtracted second detected data sets to align a local maximum value of the first detected data sets such that it is generally constant.
    Type: Application
    Filed: February 15, 2012
    Publication date: August 30, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tatsuhiko Okada, Daisaku Horikawa, Mamoru Yorimoto, Makoto Moriwaki
  • Patent number: 8186799
    Abstract: An image forming apparatus is provided with a carriage in which recording heads having nozzles for ejecting liquid droplets are mounted and is configured to form an image on a recording medium being transported. The image forming apparatus includes a pattern forming unit that forms an impact position displacement adjustment pattern formed of plural independent liquid droplets on a water repellent member; a reading unit that includes a light emitting unit for emitting light onto the adjustment pattern and a light receiving unit for receiving specular reflection light from the adjustment pattern; and an impact position correcting unit that corrects an impact position of a liquid droplet to be ejected from the recording head based on a read result by the reading unit. The reading unit is disposed on the carriage and is arranged close to the side of a guide member that guides movement of the carriage.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: May 29, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsu Morino, Noboru Sawayama, Kenichi Kawabata, Mamoru Yorimoto, Tetsuro Hirota, Takumi Hagiwara
  • Patent number: 8157342
    Abstract: A disclosed liquid-jet device includes a liquid-jet head configured to jet liquid droplets; a pattern formation control unit configured to control the liquid-jet head and thereby to form a test pattern composed of separate liquid droplets on a water-repellent part; a detecting unit including a light-emitting element configured to illuminate the test pattern on the water-repellent part and a light-receiving element configured to receive specularly reflected light from the illuminated test pattern and to output a detection signal proportional to the received specularly reflected light; and a landing position adjusting unit configured to adjust landing positions of the liquid droplets based on the detection signal from the light-receiving element.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: April 17, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsu Morino, Noboru Sawayama, Kenichi Kawabata, Mamoru Yorimoto, Tetsuro Hirota, Takumi Hagiwara, Masatoshi Sakakitani
  • Patent number: 8132883
    Abstract: An inkjet-type image forming apparatus includes a recording head configured to eject ink to form an image; a carriage where the recording head is provided, the carriage being configured to reciprocate in a direction orthogonal to a sheet transport direction; a transport unit disposed upstream of a print area in the sheet transport direction, the transport unit being configured to intermittently transport a sheet to the print area; a transport control unit configured to control the transport unit; a platen guide plate; a suction unit configured to suction the sheet onto the platen guide plate; and a control unit.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: March 13, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Takayuki Niihara, Mamoru Yorimoto, Yuichiro Maeyama
  • Patent number: 8066348
    Abstract: An image forming apparatus includes a recording head, a water-repellent transfer belt, a pattern formation controller, a read unit, and a detection unit. The recording head has a plurality of nozzles aligned in a given direction, and ejects droplets of a liquid therefrom. The pattern formation controller directs each of the plurality of nozzles to eject the liquid to form a detection pattern on the transfer belt. The detection pattern has multiple droplets ejected from each of the plurality of nozzles sequentially arranged and spaced apart from each other both in the given direction and in a direction orthogonal to the given direction. The read unit includes a light emitting element and a light receiving element, and reads the detection pattern to output a read result. The detection unit detects a defective nozzle according to the read result.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: November 29, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsuro Hirota, Takumi Hagiwara, Kenichi Kawabata, Mamoru Yorimoto, Tetsu Morino, Noboru Sawayama
  • Patent number: 8042904
    Abstract: A side wall surface of a carriage is disclosed with two first projection parts and a second projection part that define the inclination of a reflective optical sensor in its vertical direction. The two first projection parts are arranged at the same height position with a detection surface as a reference, and the second projection part is arranged at a position higher than the first projection parts with the detection surface as the reference. The second projection part has a first part higher in position from the side wall surface of the carriage than the first projection parts and has a second part lower in position than the first part. The second part has a screw hole into which a clamping member for fixing the reflective optical sensor to the second part is tightened.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: October 25, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Takayuki Niihara, Kenichi Kawabata, Shinichiro Naruse, Mamoru Yorimoto, Takumi Hagiwara, Tetsu Morino
  • Publication number: 20110216113
    Abstract: An image forming apparatus including a first carriage having at least two first recording heads, a second carriage separatably dockable with the first carriage, a pattern forming unit to control the at least two first recording heads to form on a recording medium adjustment patterns for correcting a shift in landing positions of liquid droplets ejected from the at least two first recording heads, a pattern detector provided to the first carriage to read the adjustment patterns, and a landing position corrector to correct the shift in the landing positions of the liquid droplets based on a result obtained by the pattern detector. The at least two first recording heads form multiple rows of the adjustment patterns, and the pattern detector successively reads at least two rows of the multiple rows of the adjustment patterns without docking and separation of the first and second carriages.
    Type: Application
    Filed: March 1, 2011
    Publication date: September 8, 2011
    Applicant: RICOH COMPANY, LTD.
    Inventors: Mamoru YORIMOTO, Ichiro KOMURO, Shinichiro NARUSE, Soichi SAIGA, Ryusuke MASE