Patents by Inventor Kenji Honjoh

Kenji Honjoh 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: 9122225
    Abstract: A lubricant applicator includes a lubricant, a supply member contactable against the lubricant to supply the lubricant to a target, and a lubricant gauge to detect whether an amount of lubricant remaining is less than a threshold value. The lubricant gauge includes a rotary member rotatable about a shaft, a pressing member to press and rotate the rotary member as the lubricant is consumed, a contact part of the rotary member pressed by the pressing member, and a detection part of the rotary member opposite to the contact part across the shaft of the rotary member.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: September 1, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroyuki Uenishi, Takeshi Shintani, Kenji Honjoh, Shinya Karasawa, Daisuke Tomita, Kohsuke Yamamoto, Norio Kudo
  • Publication number: 20150227107
    Abstract: An image forming apparatus includes a controller and multiple image forming units each of which includes an image bearer, a toner image forming device to form a toner image on the image bearer, a transfer device to transfer the toner image from the image bearer onto a transfer medium, a cleaning device to remove toner from a surface of the image bearer, a waste-toner tube through which toner removed by the cleaning device is transported, and a toner conveying member to transport toner by rotation and disposed inside the waste-toner tube. The controller changes a rotation speed of the toner conveying member for each of the multiple image forming units according to toner type including a first toner and a second toner having poorer flow properties than the first toner, and at least one image forming units uses the second toner and the rest use the first toner.
    Type: Application
    Filed: January 26, 2015
    Publication date: August 13, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yusuke ISHIZUKA, Takeshi SHINTANI, Nobuo KUWABARA, Kenji HONJOH, Yasuhito KUBOSHIMA
  • Patent number: 9081347
    Abstract: In an embodiment, provided is a lubricant supplying device that includes: a solid lubricant; a supplying member that supplies lubricant of the solid lubricant to a lubricant supplying target; and a remaining amount detecting unit that detects an amount of the solid lubricant being at a given amount or less. The remaining amount detecting unit is provided on a downstream side in a rubbing direction of the supplying member with respect to the solid lubricant.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: July 14, 2015
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Akira Fujimori, Satoshi Hatori, Naohiro Kumagai, Kaoru Yoshino, Hideyasu Seki, Ryohta Gotoh, Takeshi Shintani, Nobuyuki Taguchi, Hiromichi Ninomiya, Norio Kudo, Kenji Honjoh, Yuta Azeyanagi
  • Patent number: 9052669
    Abstract: A lubricant applicator includes a block of lubricant, a supply member contactable against the block of lubricant to scrape the block of lubricant, and a lubricant gauge including a first electrode and a second electrode. The lubricant gauge is electrically connected to the first electrode and the second electrode to detect whether an amount of lubricant remaining is less than a threshold value based on establishment of electrical continuity between the first electrode and the second electrode. One of the first electrode and the second electrode includes a projection projecting toward the other one of the first electrode and the second electrode.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: June 9, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Daisuke Tomita, Takeshi Shintani, Norio Kudo, Kenji Honjoh, Satoshi Hatori, Naohiro Kumagai, Akira Fujimori, Kaoru Yoshino, Yuta Azeyanagi, Hideyasu Seki, Ryohta Gotoh
  • Patent number: 9037038
    Abstract: An image carrier surface treatment device is disposed opposite an image carrier rotatable in a first rotation direction and carrying a toner image. The image carrier surface treatment device includes a roller rotatable in a second rotation direction while contacting an outer circumferential surface of the image carrier. The roller includes a shaft projecting from each lateral end of the roller in an axial direction thereof. A rolling-element bearing is fitted on the shaft of the roller to support and position the roller inside the image carrier surface treatment device.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: May 19, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Shinya Karasawa, Takeshi Shintani, Kenji Honjoh, Hiroyuki Uenishi, Daisuke Tomita, Norio Kudo, Kohsuke Yamamoto
  • Publication number: 20150078795
    Abstract: An image forming apparatus including multiple image forming units; a waste-toner container; and a waste-toner conveyance device including a common conveyance channel member disposed in an arrangement direction of the image forming units and provided with toner inlets to receive the waste toner from toner outlets of the cleaning units, communicating channel members identical in structure and respectively disposed between the toner outlets and the toner inlets of the common conveyance channel member, and a rotatable conveying member to transport the waste toner inside the common conveyance channel member linearly along a rotation axis thereof. The common conveyance channel member is shaped to equalize relative positions of each of the toner outlets and a corresponding one of the toner inlets of the common conveyance channel member among the multiple image forming units among which a distance from the toner outlet to the rotation axis differs.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 19, 2015
    Inventors: Nobuo KUWABARA, Shinichi KAWAHARA, Norio KUDOH, Takeshi SHINTANI, Kenji HONJOH, Yasuhito KUBOSHIMA, Yusuke ISHIZUKA
  • Publication number: 20140363178
    Abstract: A solid lubricant supply system includes a solid lubricant supplier to receive and supply solid lubricant to a solid lubricant supplying target. A pair of first and second moveable planar electrodes is opposed to each other. The second moveable planar electrode is partially moved toward the first moveable planar electrode as the solid lubricant is consumed. A residual solid lubricant quantity detecting unit is provide to detect a quantity of the residual solid lubricant at a first stage, in which the residual solid lubricant quantity is below a given level, by detecting electric conduction between the pair of first and second moveable planar electrodes when the pair of first and second moveable planar electrodes contacts each other. The first moveable planar electrode is enabled to further move together with the second moveable planar electrode when it is contacted and pressed by the second moveable planar electrode.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 11, 2014
    Inventors: Satoshi HATORI, Kenji HONJOH, Ryohta GOTOH, Akira FUJIMORI, Kaoru YOSHINO, Naohiro KUMAGAI, Hideyasu SEKI, Shinichi KAWAHARA, Takeshi SHINTANI, Nobuo KUWABARA, Norio KUDOH, Daisuke TOMITA
  • Publication number: 20140037304
    Abstract: A lubricant applicator includes a lubricant, a supply member contactable against the lubricant to supply the lubricant to a target, and a lubricant gauge to detect whether an amount of lubricant remaining is less than a threshold value. The lubricant gauge includes a rotary member rotatable about a shaft, a pressing member to press and rotate the rotary member as the lubricant is consumed, a contact part of the rotary member pressed by the pressing member, and a detection part of the rotary member opposite to the contact part across the shaft of the rotary member.
    Type: Application
    Filed: July 11, 2013
    Publication date: February 6, 2014
    Inventors: Hiroyuki UENISHI, Takeshi SHINTANI, Kenji HONJOH, Shinya KARASAWA, Daisuke TOMITA, Kohsuke YAMAMOTO, Norio KUDO
  • Publication number: 20140010572
    Abstract: An image carrier surface treatment device is disposed opposite an image carrier rotatable in a first rotation direction and carrying a toner image. The image carrier surface treatment device includes a roller rotatable in a second rotation direction while contacting an outer circumferential surface of the image carrier. The roller includes a shaft projecting from each lateral end of the roller in an axial direction thereof. A rolling-element bearing is fitted on the shaft of the roller to support and position the roller inside the image carrier surface treatment device.
    Type: Application
    Filed: June 7, 2013
    Publication date: January 9, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Shinya KARASAWA, Takeshi SHINTANI, Kenji HONJOH, Hiroyuki UENISHI, Daisuke TOMITA, Norio KUDO, Kohsuke YAMAMOTO
  • Patent number: 8577257
    Abstract: A process unit including a first housing detachably attachable to an image forming apparatus, an image carrier to carry an image on a surface of the image carrier, a charger to charge the surface of the image carrier, a developing device to form the image on the surface of the image carrier, a cleaning device to remove toner from the surface of the image carrier, a lubricant to be supplied to the surface of the image carrier, a lubricant container to contain the lubricant, and a waste toner container to store the toner removed from the surface of the image carrier. The first housing includes the image carrier and at least one of the charger, the developing device, and the cleaning device. The lubricant, the lubricant container, and the waste toner container together are detachably attachable to the first housing.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: November 5, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuji Arai, Satoshi Hatori, Toshio Koike, Yuta Azeyanagi, Kenji Honjoh
  • Publication number: 20130251380
    Abstract: In an embodiment, provided is a lubricant supplying device that includes: a solid lubricant; a supplying member that supplies lubricant of the solid lubricant to a lubricant supplying target; and a remaining amount detecting unit that detects an amount of the solid lubricant being at a given amount or less. The remaining amount detecting unit is provided on a downstream side in a rubbing direction of the supplying member with respect to the solid lubricant.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 26, 2013
    Inventors: Akira FUJIMORI, Satoshi Hatori, Naohiro Kumagai, Kaoru Yoshino, Hideyasu Seki, Ryohta Gotoh, Takeshi Shintani, Nobuyuki Taguchi, Hiromichi Ninomiya, Norio Kudo, Kenji Honjoh, Yuta Azeyanagi
  • Publication number: 20130251382
    Abstract: A lubricant supplying device used with a solid lubricant, includes a supplying member to supply lubricant taken from the solid lubricant to an object to be supplied with the lubricant, and a remaining amount detecting section to detect a remaining amount of the solid lubricant becoming below a predetermined value. A detection of the remaining amount of the solid lubricant is executed when an operation to supply the lubricant to the object to be supplied with the lubricant stops.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 26, 2013
    Inventors: Kenji HONJOH, Takeshi SHINTANI, Kohsuke YAMAMOTO, Daisuke TOMITA, Norio KUDO
  • Patent number: 8396383
    Abstract: An image forming apparatus including an image carrier; a charger to charge a surface of the image carrier; an irradiating device to form a latent image; a developing device to form a toner image; a transfer device to transfer the toner image onto a recording medium; a cleaning device to remove residual toner from the surface of the image carrier; a temperature and humidity detector to measure temperature and humidity within the image forming apparatus; a stop time clock to measure a period of time for which the image carrier is not driven; a removal unit to remove discharge products adhering to the surface of the image carrier; and a control unit to drive the removal unit to remove the discharge products for a period of time determined by the control unit based on measurements obtained by the temperature and humidity detector and the stop time clock.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: March 12, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Kenji Honjoh, Hirotaka Hatta, Toshiya Satoh
  • Patent number: 8391732
    Abstract: An image forming device includes: a collecting container that collects a waste toner; a rotation member that rotates and spreads a waste toner inside the collecting container; a torque detection unit that detects torque applied to the rotation member by a waste toner inside the collecting container; and a rotation direction switching unit that switches a rotation direction of the rotation member. When a torque value detected by the torque detection unit is more than a first threshold, the rotation direction of the rotation member is switched by the rotation direction switching unit.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: March 5, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Kenji Honjoh, Fumihito Itoh, Masahiko Shakuto, Kaoru Yoshino, Takuma Iwasaki
  • Patent number: 8254823
    Abstract: A waste toner storage unit detachably mountable to an image forming apparatus includes a waste toner container and an inner cover integrally attached to the waste toner container. The waste toner container stores waste toner recovered after an image forming process. The inner cover is located at a region of the waste toner storage unit that does not store waste toner.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: August 28, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroyuki Nagashima, Shuji Tanaka, Nobuo Kuwabara, Hiroshi Ono, Ken Amemiya, Masahiko Shakuto, Toshio Koike, Yuji Arai, Michiya Okamoto, Kenji Honjoh
  • Publication number: 20110274447
    Abstract: A process unit including a first housing detachably attachable to an image forming apparatus, an image carrier to carry an image on a surface thereof, a charger to charge the surface of the image carrier, a developing device to form the image on the surface of the image carrier, a cleaning device to remove toner from the surface of the image carrier, a lubricant to be supplied to the surface of the image carrier, a lubricant container to contain the lubricant, and a waste toner container to store the toner removed from the surface of the image carrier. The first housing includes the image carrier and at least one of the charger, the developing device, and the cleaning device. The lubricant, the lubricant container, and the waste toner container together are detachably attachable to the first housing.
    Type: Application
    Filed: April 15, 2011
    Publication date: November 10, 2011
    Inventors: Yuji Arai, Satoshi Hatori, Toshio Koike, Yuta Azeyanagi, Kenji Honjoh
  • Patent number: 7953363
    Abstract: A lubricant applicator includes a solid mold lubricant, a lubricant application roller, and a flicker member. The lubricant application roller scrapes and applies the lubricant to an image bearing member. The flicker member removes a powder substance adhered to the surface of the lubricant application roller and is disposed upstream of the solid mold lubricant in a direction of rotation of the lubricant application roller. The lubricant application roller, the flicker member, and the solid mold lubricant define a sealed space therebetween. A lubricant applicator includes the solid mold lubricant, the lubricant application roller, the flicker member, and an adherence prevention member that prevents the substance removed by the flicker member from adhering again to the lubricant application roller. A lubricant applicator includes the solid mold lubricant, the lubricant application roller, and a lubricant receiver that receives the scraped lubricant from the lubricant application roller.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: May 31, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Kenji Honjoh, Toshiya Satoh, Hiroyuki Nagashima, Fumihito Itoh, Hiroshi Ono, Ken Amemiya, Masahiko Shakuto, Toshio Koike, Yuji Arai, Nobuo Kuwabara, Michiya Okamoto
  • Publication number: 20110052225
    Abstract: An image forming device includes: a collecting container that collects a waste toner; a rotation member that rotates and spreads a waste toner inside the collecting container; a torque detection unit that detects torque applied to the rotation member by a waste toner inside the collecting container; and a rotation direction switching unit that switches a rotation direction of the rotation member. When a torque value detected by the torque detection unit is more than a first threshold, the rotation direction of the rotation member is switched by the rotation direction switching unit.
    Type: Application
    Filed: August 4, 2010
    Publication date: March 3, 2011
    Inventors: Kenji Honjoh, Fumihito Itoh, Masahiko Shakuto, Kaoru Yoshino, Takuma Iwasaki
  • Publication number: 20100247123
    Abstract: An image forming apparatus including an image carrier; a charger to charge a surface of the image carrier; an irradiating device to form a latent image; a developing device to form a toner image; a transfer device to transfer the toner image onto a recording medium; a cleaning device to remove residual toner from the surface of the image carrier; a temperature and humidity detector to measure temperature and humidity within the image forming apparatus; a stop time clock to measure a period of time for which the image carrier is not driven; a removal unit to remove discharge products adhering to the surface of the image carrier; and a control unit to drive the removal unit to remove the discharge products for a period of time determined by the control unit based on measurements obtained by the temperature and humidity detector and the stop time clock.
    Type: Application
    Filed: March 24, 2010
    Publication date: September 30, 2010
    Inventors: Kenji Honjoh, Hirotaka Hatta, Toshiya Satoh
  • Publication number: 20100021205
    Abstract: A lubricant applicator includes a solid mold lubricant, a lubricant application roller, and a flicker member. The lubricant application roller scrapes and applies the lubricant to an image bearing member. The flicker member removes a powder substance adhered to the surface of the lubricant application roller and is disposed upstream of the solid mold lubricant in a direction of rotation of the lubricant application roller. The lubricant application roller, the flicker member, and the solid mold lubricant define a sealed space therebetween. A lubricant applicator includes the solid mold lubricant, the lubricant application roller, the flicker member, and an adherence prevention member that prevents the substance removed by the flicker member from adhering again to the lubricant application roller. A lubricant applicator includes the solid mold lubricant, the lubricant application roller, and a lubricant receiver that receives the scraped lubricant from the lubricant application roller.
    Type: Application
    Filed: October 1, 2009
    Publication date: January 28, 2010
    Inventors: Kenji Honjoh, Toshiya Satoh, Hiroyuki Nagashima, Fumihito Itoh, Hiroshi Ono, Ken Amemiya, Masahiko Shakuto, Toshio Koike, Yuji Arai, Nobuo Kuwabara, Michiya Okamoto