Patents by Inventor Junpei KAMICHI
Junpei KAMICHI 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).
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Patent number: 9625866Abstract: An image forming apparatus includes an apparatus body, a sheet container detachably attachable to the apparatus body and accommodating recording media therein, an image forming part to form an image on each of the recording media, a sheet separating part to separate the recording media one by one, feed the recording medium toward the image forming part, and include a sheet feeding body and a sheet separating body to rotate in contact with the sheet feeding body and form a sheet separation nip region with the sheet feeding body, a sheet containing unit to contain the recording media therein, and a sheet separating body storing unit disposed at one end of the sheet containing unit to store the sheet separating body therein. The sheet container being pulled out from the apparatus body by moving from the sheet containing unit to the sheet separating body storing unit.Type: GrantFiled: November 5, 2014Date of Patent: April 18, 2017Assignee: RICOH COMPANY, LTD.Inventors: Jumpei Aoyama, Hajime Nishida, Hideki Tobinaga, Junpei Kamichi, Satoshi Kuno, Shun Kobayashi, Manabu Nonaka
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Patent number: 9617108Abstract: A recording medium conveyor includable to an image forming apparatus includes a driving source, a first rotary unit, and a second rotary unit. The first rotary unit includes a driving gear, a driving shaft rotating with the driving gear, and multiple driving rotary bodies disposed on the driving shaft. The second rotary unit disposed facing the first rotary unit includes a driven gear meshed with the driving gear, a driven shaft, multiple driven rotary bodies disposed on the driven shaft, and multiple stiffening rotary bodies disposed between two of the multiple driven rotary bodies and having a diameter greater than an outer diameter of the multiple driven rotary bodies. A gear ratio between the driving gear and the driven gear is adjusted such that a peripheral speed of the multiple driving rotary bodies is equal to a peripheral speed of the multiple stiffening rotary bodies.Type: GrantFiled: December 28, 2015Date of Patent: April 11, 2017Assignee: RICOH COMPANY, LTD.Inventor: Junpei Kamichi
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Patent number: 9568879Abstract: An image forming apparatus includes an apparatus body, a sheet container, an image forming part to form an image, a sheet feeding rotary body to feed the recording medium, a sheet separating rotary body to contact the sheet feeding rotary body and rotate with the sheet feeding rotary body with a sheet separation nip region formed therebetween, a rotation adjusting unit to adjust rotation of the sheet separating rotary body, a sheet containing unit to contain the recording media therein, a sheet separating body storing unit disposed at one end of the sheet containing unit to store the sheet separating body therein, and a load resistance applying mechanism to apply a rotational load resistance different from a contact force generated by contacting of the sheet separating rotary body with the sheet feeding rotary body, to the sheet feeding rotary body with no rotation driving force applied thereto.Type: GrantFiled: November 10, 2014Date of Patent: February 14, 2017Assignee: Ricoh Company Ltd.Inventors: Hideki Tobinaga, Hajime Nishida, Jumpei Aoyama, Junpei Kamichi, Satoshi Kuno, Shun Kobayashi, Manabu Nonaka
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Patent number: 9448517Abstract: An image forming apparatus includes an image forming part to form an image on a recording medium, an apparatus body, a sheet container detachably attachable to the apparatus body and accommodating the recording medium, a sheet conveying path through which the recording medium is conveyed toward the image forming part, a sheet reentry path disposed above the sheet container and through which the recording medium having the image thereon is conveyed again to the sheet conveying path, a swing unit to swingably move a bottom plate of the sheet reentry path between a first position and a second position, a lock releasing unit to lock and release the bottom plate with respect to the first position of the swing unit, and a release operating unit to cause the lock releasing unit to release the bottom plate from the first position of the swing unit.Type: GrantFiled: March 4, 2015Date of Patent: September 20, 2016Assignee: Ricoh Company, Ltd.Inventors: Hideki Tobinaga, Hajime Nishida, Satoshi Kuno, Jumpei Aoyama, Junpei Kamichi, Shun Kobayashi
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Publication number: 20160185558Abstract: A recording medium conveyor includable to an image forming apparatus includes a driving source, a first rotary unit, and a second rotary unit. The first rotary unit includes a driving gear, a driving shaft rotating with the driving gear, and multiple driving rotary bodies disposed on the driving shaft. The second rotary unit disposed facing the first rotary unit includes a driven gear meshed with the driving gear, a driven shaft, multiple driven rotary bodies disposed on the driven shaft, and multiple stiffening rotary bodies disposed between two of the multiple driven rotary bodies and having a diameter greater than an outer diameter of the multiple driven rotary bodies. A gear ratio between the driving gear and the driven gear is adjusted such that a peripheral speed of the multiple driving rotary bodies is equal to a peripheral speed of the multiple stiffening rotary bodies.Type: ApplicationFiled: December 28, 2015Publication date: June 30, 2016Applicant: Ricoh Company, Ltd.Inventor: Junpei Kamichi
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Publication number: 20150253715Abstract: An image forming apparatus includes an image forming part to form an image on a recording medium, an apparatus body, a sheet container detachably attachable to the apparatus body and accommodating the recording medium, a sheet conveying path through which the recording medium is conveyed toward the image forming part, a sheet reentry path disposed above the sheet container and through which the recording medium having the image thereon is conveyed again to the sheet conveying path, a swing unit to swingably move a bottom plate of the sheet reentry path between a first position and a second position, a lock releasing unit to lock and release the bottom plate with respect to the first position of the swing unit, and a release operating unit to cause the lock releasing unit to release the bottom plate from the first position of the swing unit.Type: ApplicationFiled: March 4, 2015Publication date: September 10, 2015Applicant: RICOH COMPANY, LTD.Inventors: Hideki TOBINAGA, Hajime NISHIDA, Satoshi KUNO, Jumpei AOYAMA, Junpei KAMICHI, Shun KOBAYASHI
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Publication number: 20150251864Abstract: An image forming apparatus includes a sheet container accommodating a recording medium therein, a sheet separating feeder including a sheet feeding body and a sheet separating body, an image forming part, and a bend applier. The sheet feeding body feeds the recording medium along with a surface movement thereof while the recording medium contacting the surface thereof. The sheet separating body forms a sheet separation nip region with the sheet feeding body and sandwiches the recording medium in the sheet separation nip region. The sheet separating feeder separates and feeds the recording medium contacting the sheet feeding body. The image forming part forms an image on the recording medium. The bend applier having a leading end of an elastic material contacts and bends the recording medium before the sheet separation nip region and generates a wrinkle extending on the recording medium in a sheet conveying direction.Type: ApplicationFiled: March 4, 2015Publication date: September 10, 2015Applicant: RICOH COMPANY, LTD.Inventors: Jumpei AOYAMA, Manabu NONAKA, Hajime NISHIDA, Hideki TOBINAGA, Junpei KAMICHI, Satoshi KUNO, Shun KOBAYASHI
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Publication number: 20150132040Abstract: An image forming apparatus includes an apparatus body, a sheet container detachably attachable to the apparatus body and accommodating recording media therein, an image forming part to form an image on each of the recording media, a sheet separating part to separate the recording media one by one, feed the recording medium toward the image forming part, and include a sheet feeding body and a sheet separating body to rotate in contact with the sheet feeding body and form a sheet separation nip region with the sheet feeding body, a sheet containing unit to contain the recording media therein, and a sheet separating body storing unit disposed at one end of the sheet containing unit to store the sheet separating body therein. The sheet container being pulled out from the apparatus body by moving from the sheet containing unit to the sheet separating body storing unit.Type: ApplicationFiled: November 5, 2014Publication date: May 14, 2015Applicant: RICOH COMPANY, LTD.Inventors: Jumpei AOYAMA, Hajime NISHIDA, Hideki TOBINAGA, Junpei KAMICHI, Satoshi KUNO, Shun KOBAYASHI, Manabu NONAKA
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Publication number: 20150132039Abstract: An image forming apparatus includes an apparatus body, a sheet container, an image forming part to form an image, a sheet feeding rotary body to feed the recording medium, a sheet separating rotary body to contact the sheet feeding rotary body and rotate with the sheet feeding rotary body with a sheet separation nip region formed therebetween, a rotation adjusting unit to adjust rotation of the sheet separating rotary body, a sheet containing unit to contain the recording media therein, a sheet separating body storing unit disposed at one end of the sheet containing unit to store the sheet separating body therein, and a load resistance applying mechanism to apply a rotational load resistance different from a contact force generated by contacting of the sheet separating rotary body with the sheet feeding rotary body, to the sheet feeding rotary body with no rotation driving force applied thereto.Type: ApplicationFiled: November 10, 2014Publication date: May 14, 2015Applicant: RICOH COMPANY, LTD.Inventors: Hideki TOBINAGA, Hajime NISHIDA, Jumpei AOYAMA, Junpei KAMICHI, Satoshi KUNO, Shun KOBAYASHI, Manabu NONAKA