Patents by Inventor Makoto Kikura

Makoto Kikura 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: 20220055386
    Abstract: In an image forming apparatus, a carriage mounts a recording head for discharging droplets, and moves in a main scan direction. A guide member slidably guides the carriage. An encoder scale is arranged along the main scan direction. An encoder sensor reads the encoder scale. The carriage includes a head mounting part for mounting the recording head, and a sensor attaching part for attaching the encoder sensor. The sensor attaching part is provided so as to be extended from the head mounting part. The encoder scale is arranged at a location which the encoder sensor can read. A partition member is provided to separate the head mounting part from the sensor attaching part in the carriage. The head mounting part is arranged in a first space, and the sensor attaching part and the encoder scale are arranged in a second space separated from the first space by the partition member.
    Type: Application
    Filed: November 8, 2021
    Publication date: February 24, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Norikazu YANASE, Makoto KIKURA, Tsuguyori KEMMA
  • Patent number: 11198310
    Abstract: In an image forming apparatus, a carriage mounts a recording head for discharging droplets, and moves in a main scan direction. A guide member slidably guides the carriage. An encoder scale is arranged along the main scan direction. An encoder sensor reads the encoder scale. The carriage includes a head mounting part for mounting the recording head, and a sensor attaching part for attaching the encoder sensor. The sensor attaching part is provided so as to be extended from the head mounting part. The encoder scale is arranged at a location which the encoder sensor can read. A partition member is provided to separate the head mounting part from the sensor attaching part in the carriage. The head mounting part is arranged in a first space, and the sensor attaching part and the encoder scale are arranged in a second space separated from the first apace by the partition member.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: December 14, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Norikazu Yanase, Makoto Kikura, Tsuguyori Kemma
  • Patent number: 10935929
    Abstract: An image forming apparatus includes an image forming device; a fixing device; a first conveyance passage downstream from the fixing device in a sheet conveyance direction; a second conveyance passage downstream from the fixing device and communicating with the first conveyance passage; a sheet reversing member to reverse a conveyance direction of the sheet to the second conveyance passage; a divider to switch a route of the sheet between the first conveyance passage and the second conveyance passage; and a sheet detection sensor disposed downstream from the fixing device and upstream from the divider. The first conveyance passage includes a sheet outlet from which the sheet is ejected outside the apparatus. The apparatus further includes a ventilation passage communicating with an outside, to guide air from the outside to pass the sheet detection sensor and enter at least one of the first conveyance passage and the second conveyance passage.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: March 2, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoya Tanaka, Shoji Asanuma, Taiga Shoen, Yoshihide Ohta, Akimitsu Obana, Makoto Kikura
  • Patent number: 10761477
    Abstract: An image forming apparatus includes an apparatus body including a body side connector and a removable unit removably inserted in the apparatus body. The removable unit includes a unit side connector configured to engage with the body side connector in conjunction with insertion of the removable unit into and from the apparatus body in an insertion direction and disengage from the body side connector in conjunction with removal of the removable unit from the apparatus body in a removal direction. The apparatus further includes a first holder and a second holder. The first holder holds the body side connector and restrict the body side connector from moving in the insertion direction and the removal direction relative to the first holder. The second holder holds the first holder and restrict the first holder from moving in a direction different from the insertion direction and the removal direction.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: September 1, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yoshihide Ohta, Makoto Kikura, Shoji Asanuma, Akimitsu Obana, Tomoya Tanaka, Taiga Shoen
  • Publication number: 20200133195
    Abstract: An image forming apparatus includes an apparatus body including a body side connector and a removable unit removably inserted in the apparatus body. The removable unit includes a unit side connector configured to engage with the body side connector in conjunction with insertion of the removable unit into and from the apparatus body in an insertion direction and disengage from the body side connector in conjunction with removal of the removable unit from the apparatus body in a removal direction. The apparatus further includes a first holder and a second holder. The first holder holds the body side connector and restrict the body side connector from moving in the insertion direction and the removal direction relative to the first holder. The second holder holds the first holder and restrict the first holder from moving in a direction different from the insertion direction and the removal direction.
    Type: Application
    Filed: September 24, 2019
    Publication date: April 30, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Yoshihide OHTA, Makoto KIKURA, Shoji ASANUMA, Akimitsu OBANA, Tomoya TANAKA, Taiga SHOEN
  • Publication number: 20200103823
    Abstract: An image forming apparatus includes an image forming device; a fixing device; a first conveyance passage downstream from the fixing device in a sheet conveyance direction; a second conveyance passage downstream from the fixing device and communicating with the first conveyance passage; a sheet reversing member to reverse a conveyance direction of the sheet to the second conveyance passage; a divider to switch a route of the sheet between the first conveyance passage and the second conveyance passage; and a sheet detection sensor disposed downstream from the fixing device and upstream from the divider. The first conveyance passage includes a sheet outlet from which the sheet is ejected outside the apparatus. The apparatus further includes a ventilation passage communicating with an outside, to guide air from the outside to pass the sheet detection sensor and enter at least one of the first conveyance passage and the second conveyance passage.
    Type: Application
    Filed: September 10, 2019
    Publication date: April 2, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Tomoya TANAKA, Shoji ASANUMA, Taiga SHOEN, Yoshihide OHTA, Akimitsu OBANA, Makoto KIKURA
  • Patent number: 10599091
    Abstract: A cabinet includes a first body side engagement and a second body side engagement mounted on a body and a first cover side engagement and a second cover side engagement mounted on a cover. Slide restriction faces of the first cover side engagement and the second cover side engagement come into contact with slide restriction faces of the first body side engagement and the second body side engagement, respectively, to restrict sliding of a slider when the first cover side engagement does not engage the first body side engagement. The slide restriction face of at least one of the first body side engagement and the first cover side engagement has a length that is greater than a length of the slide restriction face of other one of the first body side engagement, the first cover side engagement, the second body side engagement, and the second cover side engagement.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: March 24, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Makoto Kikura, Yoshihide Ohta, Shoji Asanuma, Gakushi Tanaka, Tomoya Tanaka, Akimitsu Obana, Taiga Shoen
  • Publication number: 20190227478
    Abstract: A cabinet includes a first body side engagement and a second body side engagement mounted on a body and a first cover side engagement and a second cover side engagement mounted on a cover. Slide restriction faces of the first cover side engagement and the second cover side engagement come into contact with slide restriction faces of the first body side engagement and the second body side engagement, respectively, to restrict sliding of a slider when the first cover side engagement does not engage the first body side engagement. The slide restriction face of at least one of the first body side engagement and the first cover side engagement has a length that is greater than a length of the slide restriction face of other one of the first body side engagement, the first cover side engagement, the second body side engagement, and the second cover side engagement.
    Type: Application
    Filed: December 12, 2018
    Publication date: July 25, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Makoto Kikura, Yoshihide Ohta, Shoji Asanuma, Gakushi Tanaka, Tomoya Tanaka, Akimitsu Obana, Taiga Shoen
  • Publication number: 20190009586
    Abstract: In an image forming apparatus, a carriage mounts a recording head for discharging droplets, and moves in a main scan direction. A guide member slidably guides the carriage. An encoder scale is arranged along the main scan direction. An encoder sensor reads the encoder scale. The carriage includes a head mounting part for mounting the recording head, and a sensor attaching part for attaching the encoder sensor. The sensor attaching part is provided so as to be extended from the head mounting part. The encoder scale is arranged at a location which the encoder sensor can read. A partition member is provided to separate the head mounting part from the sensor attaching part in the carriage. The head mounting part is arranged in a first space, and the sensor attaching part and the encoder scale are arranged in a second space separated from the first apace by the partition member.
    Type: Application
    Filed: September 14, 2018
    Publication date: January 10, 2019
    Inventors: Norikazu Yanase, Makoto Kikura, Tsuguyori Kemma
  • Patent number: 9358817
    Abstract: An image forming apparatus includes an image forming unit and a conveyance unit. The image forming unit forms an image on a print medium. The conveyance unit has a belt member to convey the print medium in a state in which an end of the print medium in a width direction perpendicular to a conveyance direction of the print medium is placed outside an end of the belt member in the width direction.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: June 7, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuuzoh Obata, Makoto Kikura, Kazuyoshi Matsumoto, Kazuyoshi Kondo, Gaku Hosono, Yoshinori Uchino, Norikazu Yanase, Daisuke Nakamura
  • Patent number: 9315045
    Abstract: An image forming apparatus includes a media roll, art image forming device, and a feeder. In the media roll, a printing medium having an adhesive face is wound in a roll shape. The image forming device forms an image on the printing medium. The feeder feeds the printing medium. The feeder includes a protection belt and a pair of rotary bodies. The protection belt presses against and protects the adhesive face of the printing medium. The pair of rotary bodies sandwich and press the printing medium and the protection belt between the pair of rotary bodies. An approach angle of the printing medium is within a range from 0° to 30° and is formed by the printing medium drawn from the media roll and approaching to between the pair of rotary bodies and an opposing face of the protection belt opposing the image forming device.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: April 19, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kazuyoshi Kondo, Kazuyoshi Matsumoto, Makoto Kikura, Yuuzoh Obata, Norikazu Yanase, Gaku Hosono, Satoru Yoshida, Masashi Ohnishi, Suguru Masunaga
  • Patent number: 9308756
    Abstract: An image forming apparatus includes an apparatus body, a sheet feeder to load a roll body including a recording medium wound around, an image forming unit to form an image on the recording medium, and a conveyance unit including a conveyance belt to convey the recording medium drawn out from the roll body so as to oppose the recording medium to the image forming unit. The sheet feeder and the conveyance unit are integrated as a sheet feed conveyance unit. The sheet feed conveyance unit is configured to load the roll body in at least the sheet feeder and be drawable from the apparatus body to a position at which the conveyance belt is visible.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: April 12, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kazuyoshi Matsumoto, Makoto Kikura, Kazuyoshi Kondo, Yuuzoh Obata, Norikazu Yanase, Yoshinori Uchino, Gaku Hosono, Tohru Watanabe, Toshihisa Nakamura, Tadashi Okano, Naoki Saitoh
  • Patent number: 9283785
    Abstract: In an image forming apparatus, a carriage mounts a recording head for discharging droplets, and moves in a main scan direction. A guide member slidably guides the carriage. An encoder scale is arranged along the main scan direction. An encoder sensor reads the encoder scale. The carriage includes a head mounting part for mounting the recording head, and a sensor attaching part for attaching the encoder sensor. The sensor attaching part is provided so as to be extended from the head mounting part. The encoder scale is arranged at a location which the encoder sensor can read. A partition member is provided to separate the head mounting part from the sensor attaching part in the carriage. The head mounting part is arranged in a first space, and the sensor attaching part and the encoder scale are arranged in a second space separated from the first space by the partition member.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: March 15, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Norikazu Yanase, Makoto Kikura, Tsuguyori Kemma
  • Patent number: 9233560
    Abstract: An image forming apparatus includes an image forming device to form an image on a print medium by a reciprocation operation of a print head. There is a conveying device including a belt that holds the print medium, a fan that adsorbs air through suction holes in the belt, and a fan drive controller that drives the suction fan and adjusts power of adsorption of the suction fan. The fan drive controller performs control which makes the power of adsorption for the first reciprocation movement of the image forming device stronger than the power of adsorption for the second reciprocation movement of the image forming device.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: January 12, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Norikazu Yanase, Kazuyoshi Matsumoto, Makoto Kikura, Kazuyoshi Kondoh, Yuuzoh Obata, Gaku Hosono
  • Patent number: 9186920
    Abstract: An image forming apparatus includes, an image forming device, a transporting device, a first medium holding device, and a second medium holding device. The image forming device forms an image on a print medium unwound from a roll. The transporting device is configured to transport the unwound print medium on a transport path facing the image forming device. The first medium holding device is disposed upstream of the image forming device in a medium transporting direction, and configured to hold the print medium on the transport path and retract to an open position for opening the transport path. The second medium holding device is disposed downstream of the image forming device in the medium transporting direction, and configured to hold the print medium on the transport path and retract to an open position for opening the transport path.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: November 17, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Makoto Kikura, Kazuyoshi Matsumoto, Kazuyoshi Kondo, Yuuzoh Obata, Norikazu Yanase, Yoshinori Uchino, Gaku Hosono
  • Patent number: 9108433
    Abstract: An image forming apparatus includes an image forming unit, a conveyance unit, and an adhesive-surface guide unit. The adhesive-surface guide unit includes a second rotary body and an adhesive-surface guide member. The second rotary body is disposed at a position downstream from a first rotary body of a pair of rotary bodies of the conveyance unit in a conveyance direction. The adhesive-surface guide member is wound around the first and second rotary bodies to guide an adhesive surface of a print medium. The adhesive-surface guide unit is configured to press the adhesive-surface guide member against the adhesive surface, sandwich the print medium and the second rotary body between the pair of rotary bodies, move the print medium and the second rotary body together, and separate the adhesive-surface guide member from the adhesive surface at a side of the adhesive-surface guide unit at which the second rotary body is disposed.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: August 18, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kazuyoshi Kondo, Kazuyoshi Matsumoto, Makoto Kikura, Yuuzoh Obata, Norikazu Yanase, Yoshinori Uchino, Gaku Hosono, Tadayasu Enomoto
  • Patent number: 9110424
    Abstract: An image forming apparatus includes a roll body including a print medium wound around, the medium having an adhesive face, an image forming unit to form an image on the adhesive face, a conveyance unit having a pair of a conveyance rotor and an opposed rotor to convey the medium with the medium interposed between the conveyance rotor and the opposed rotor and an adhesive face guide unit to guide the medium when the conveyance unit returns the medium in a return direction opposite a conveyance direction of the medium. The adhesive face guide unit has a downstream rotor disposed downstream from the opposed rotor in the return direction and an endless adhesive face guide member wound around the opposed rotor and the downstream rotor. The adhesive face guide member is configured to receive and guide the adhesive face of the medium returned, in a separable state.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: August 18, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kazuyoshi Kondo, Kazuyoshi Matsumoto, Makoto Kikura, Yuuzoh Obata, Norikazu Yanase, Gaku Hosono, Yoshinori Uchino, Masateru Ujiie, Shu Kanno
  • Patent number: 9050838
    Abstract: An image forming apparatus includes a main body and a printing assembly. The printing assembly includes a carriage, an encoder scale, an encoder sensor, and a flexible cable. The carriage has a head mounting part and a board mounting part arranged along a direction perpendicular to the main scanning direction. The head mounting part mounts a recording head. The board mounting part mounts both the sensor and a carriage-side circuit board connected to the cable. A housing of the body has a first cover portion to cover an area opposing the head mounting part and a second cover portion to cover an area opposing the board mounting part. The first cover portion is openably disposed at the body to allow a user to open the first cover portion. The second cover portion is stationarily fixed at the body to prevent a user from opening the second cover portion.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: June 9, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tsuguyori Kemma, Makoto Kikura, Norikazu Yanase
  • Patent number: 8998371
    Abstract: An image forming apparatus includes an image forming device, a conveyance unit, a correction unit, and an attitude controller. The image forming device forms an image on a printing medium. The conveyance unit is disposed opposing the image forming device to convey the printing medium. The correction unit corrects an attitude of a leading edge of the printing medium sent out from the conveyance unit. The attitude controller controls correction of the attitude of the leading edge of the punting medium performed by the correction unit. The attitude controller determines whether or not the correction of the attitude of the leading edge of the printing medium is to be performed, and causes the correction unit to perform the correction when the attitude controller determines that the correction is to be performed.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: April 7, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoaki Nakano, Kazuyoshi Matsumoto, Shingo Masaoka, Yasukazu Kitamura, Namio Ogihara, Yoshimitsu Ogura, Makoto Kikura, Kazuyoshi Kondo, Yuuzoh Obata, Norikazu Yanase, Yoshinori Uchino, Gaku Hosono, Takao Otsuka, Seiya Ogawa, Yuuichiroh Tsujiguchi, Masashi Ohnishi
  • Publication number: 20150077494
    Abstract: An image forming apparatus includes an image forming device, a conveyor, and a separation unit. The image forming device forms an image on a printing medium. The separation unit separates a printing medium from the belt. The separation unit includes a claw portion to contact the belt, and a first wing and a second wing disposed at both sides of the claw portion in a direction perpendicular to a conveyance direction of the printing medium. Each of the first wing and the second wing has a guide face to guide the printing medium. The guide face is a sloped face that slopes downward in a direction away from the claw portion with respect to the direction perpendicular to the conveyance direction of the printing medium. Each of the first wing and the second wing has an upstream end that recedes toward a downstream side in the conveyance direction.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 19, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yuuzoh Obata, Tohru Watanabe, Kazuyoshi Matsumoto, Toshihisa Nakamura, Makoto Kikura, Kazuyoshi Kondo, Norikazu Yanase, Gaku Hosono