Patents by Inventor Satoshi Nishida

Satoshi Nishida 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).

  • Image forming apparatus
    Patent number: 9195187
    Abstract: An image forming apparatus configured to form a toner image on a recording material, includes: an image forming unit configured to form a unfixed toner image on the recording material; a fixing unit configured to heat the recording material where the unfixed toner image is formed while conveying the recording material using a nip portion, and to fix the unfixed toner image on the recording material; and a control unit configured to perform control so that temperature of the fixing unit is maintained in target temperature, with the target temperature (Tn) of a n'th page in consecutive printing being set to the highest temperature of the target temperatures (Tn to Tn+k) according to each of image densities (Dn to Dn+k) at (n to (n+k))'th pages, where integer k?1.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: November 24, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shogo Kan, Akimichi Suzuki, Satoshi Nishida, Hideo Nanataki, Takanori Mitani
  • FIXING APPARATUS
    Publication number: 20150331375
    Abstract: A fixing apparatus that heats, at a nip portion, a recording material, bearing a toner image, while conveying the recording material to fix the toner image thereto, includes a roller, a heating unit configured to contact the roller to form a heating portion with the roller, and heat the roller via the heating portion, wherein the heating unit includes a film, and a heating portion forming member configured to contact an inner surface of the film and form the heating portion with the roller via the film, and a backup member configured to contact the roller and form the nip portion with the roller. A micro hardness of a surface of the roller is lower than that of the film at the heating portion, and in at least a partial region of the heating portion, a velocity difference is provided between the surfaces of the roller and the film.
    Type: Application
    Filed: May 7, 2015
    Publication date: November 19, 2015
    Inventors: Isamu Takeda, Satoshi Nishida
  • SEMICONDUCTOR LASER APPARATUS
    Publication number: 20150303656
    Abstract: A semiconductor laser apparatus, including: a beam divergence angle correction optical system for correcting a divergence angle of beams generated from light emitting points of a semiconductor laser bar; a beam rotation optical system for rotating the beams each having the corrected divergence angle; a wavelength dispersion optical element having a wavelength dispersion function; and a partial reflection mirror. A relative position of the beam divergence angle correction optical system with respect to the light emitting point in a divergence angle correction direction is changed for each light emitting point.
    Type: Application
    Filed: October 1, 2013
    Publication date: October 22, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Daiji MORITA, Tomotaka KATSURA, Susumu KONNO, Shuichi FUJIKAWA, Satoshi NISHIDA, Kenji KUMAMOTO, Naoki MIYAMOTO, Hiroaki KUROKAWA
  • Film and image heating device using film
    Patent number: 9158251
    Abstract: A cylindrical film used in an image heating device heating a recording material, on which an image has been formed, has a resin layer, this resin layer being made from a resin in which a crystalline resin and an amorphous resin having a higher glass transition temperature than the crystalline resin are blended, wherein a volume ratio of the crystalline resin with respect to the amorphous resin in the resin layer is 70/30 to 99/1.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: October 13, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takanori Mitani, Akimichi Suzuki, Kazuhiro Doda, Satoshi Nishida, Isamu Takeda, Akira Okano, Masahiro Suzuki
  • IMAGE FORMING APPARATUS AND IMAGE FORMING SYSTEM
    Publication number: 20150277299
    Abstract: An image forming apparatus according to the present invention includes: an opposite roller switching mechanism which switches an opposite roller forming a transfer nip to a second opposite roller of which the outer diameter is different from the outer diameter of a first opposite roller; a paper type information acquirer which acquires the type information of a recording medium used; and a controller which controls the opposite roller switching mechanism based on the type information acquired from the paper type information acquirer.
    Type: Application
    Filed: February 25, 2015
    Publication date: October 1, 2015
    Inventors: Yusuke NISHISAKA, Satoshi Nishida
  • Fixing apparatus and image forming apparatus including the fixing apparatus
    Patent number: 9110417
    Abstract: A fixing apparatus includes a roller, a first unit configured to heat the roller, the first unit including a first tubular film, a heating portion forming member to form a heating portion with the roller, and a first guide member dotted with first protruding portions contacting the inner surface of the first tubular film, and a second unit configured to form a nip portion with the roller, the second unit including a second tubular film, a nip portion forming member to form the nip portion with the roller, and a second guide member dotted with second protruding portions contacting the inner surface of the second tubular film, wherein there is a non-overlapping area between the first protruding portions and the second protruding portions in a generatrix direction of the roller.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 18, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takanori Mitani, Satoshi Nishida, Hideo Nanataki, Shogo Kan, Takeshi Shinji
  • Fixing device
    Patent number: 9042800
    Abstract: A fixing device configured to fix a toner image on a recording material by heating while conveying the recording material that bears the toner image by a nip portion, the fixing device includes a fixing roller having a rubber layer, a rotating member configured to form a contact portion between the rotating member and the fixing roller, and a pressure member configured to form the nip portion cooperatively with the fixing roller. In the fixing device, heat of the rotating member transfers to the fixing roller from the rotating member via the contact portion, and the contact portion includes a region where the pressure is increased after being decreased on a downstream side further than a center of the contact portion in the rotational direction of the rotating member.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: May 26, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Nishida, Hideo Nanataki, Takanori Mitani, Shogo Kan, Takeshi Shinji, Kohei Okayasu, Masafumi Maeda
  • Image heating apparatus
    Patent number: 9014608
    Abstract: An image heating apparatus for heating a recording material, on which a toner image is carried, while conveying the recording material in a nip includes: a fixing roller including a metal core, a heat insulating layer formed on a surface of the core metal, and a high heat transfer layer which is formed on an outer peripheral surface of the heat insulating layer and has a higher thermal conductivity than the heat insulating layer; a heating member for heating the fixing roller from an outside; and a back-up member for forming the nip together with the fixing roller. When the fixing roller and the back-up member opposing the fixing roller are supplied with the same heat quantity, the temperature rise rate in a neighborhood of the surface of the back-up member supplied with the heat quantity is higher than that of the fixing roller.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: April 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kohei Okayasu, Satoshi Nishida
  • FILM AND IMAGE HEATING DEVICE USING FILM
    Publication number: 20150063885
    Abstract: A cylindrical film used in an image heating device heating a recording material, on which an image has been formed, has a resin layer, this resin layer being made from a resin in which a crystalline resin and an amorphous resin having a higher glass transition temperature than the crystalline resin are blended, wherein a volume ratio of the crystalline resin with respect to the amorphous resin in the resin layer is 70/30 to 99/1.
    Type: Application
    Filed: August 25, 2014
    Publication date: March 5, 2015
    Inventors: Takanori Mitani, Akimichi Suzuki, Kazuhiro Doda, Satoshi Nishida, Isamu Takeda, Akira Okano, Masahiro Suzuki
  • Image forming apparatus
    Patent number: 8909121
    Abstract: An image forming apparatus includes: a transfer belt that is stretched on a plurality of support rollers including a backup roller in a loop-like manner and has an outer surface for carrying thereon a toner image; a transfer roller that is brought into pressurized contact with the backup roller across the transfer belt and forms a transfer nip with the transfer belt; a restriction member that is placed upstream of a transfer nip in a sheet conveying direction so as to be switchable between a first state in which the restriction member is brought closer to an inner surface of the transfer belt and a second state in which a distance of the restriction member from the inner surface of the transfer belt is larger than that in the first state; and a control section that switches a state of the restriction member.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: December 9, 2014
    Assignee: Konica Minolta, Inc.
    Inventors: Yusuke Nishisaka, Satoshi Nishida, Hideo Yamaki
  • IMAGE FORMING APPARATUS
    Publication number: 20140314437
    Abstract: An image forming apparatus includes: an image forming portion; a fixing portion; a first air blowing portion; and a second air blowing portion. The apparatus is operable in a first air blowing mode in which both the first and second air blowing portions are driven and in which the direction of the air near the exit is the recording material feeding direction, and is operable in a second air blowing mode in which both the first and second air blowing portions are driven and in which a direction of the air near the exit is a recording material feeding direction and a speed of the air is lower than a speed of the air in the first air blowing mode or in which the direction of the air near the exit is the opposite direction to the recording material feeding direction.
    Type: Application
    Filed: April 16, 2014
    Publication date: October 23, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Satoshi Nishida, Takanori Mitani, Akimichi Suzuki, Hideo Nanataki, Shogo Kan
  • IMAGE FORMING APPARATUS
    Publication number: 20140314458
    Abstract: An image forming apparatus includes an image forming portion; and a fixing portion. The fixing portion includes a cylindrical film, a nip-forming member and a roller including a shaft portion and an elastic layer. The elastic layer contacts an outer surface of the film except an end region of the film with respect to a generatrix direction. In the end region, the shaft portion and the outer surface of the film oppose each other with a spatial region with respect to a radial direction of the shaft portion. The image forming apparatus includes a spacer occupying at least a part of the spatial region.
    Type: Application
    Filed: April 15, 2014
    Publication date: October 23, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takanori Mitani, Satoshi Nishida, Hideo Nanataki, Akimichi Suzuki, Shogo Kan, Kensuke Umeda, Takaaki Akamatsu
  • Image forming apparatus
    Patent number: 8855521
    Abstract: An image forming apparatus including: an image forming section having a intermediate transfer body to carry a toner image on a photoreceptor and transfer the toner image onto a sheet of paper; a cleaning section for removing residual toner on the intermediate transfer body by bringing a cleaning blade into close contact with the intermediate transfer body; and a control section for controlling a rotation of the intermediate transfer body so as to carry out a return action of a blade configuration which stops or reverses the rotation of the intermediate transfer body, when a rotation amount reaches a predetermined value, wherein the control section carries out the return action when the rotation amount reaches a value smaller than the predetermined value, in a case where a plurality of previous printing jobs is determined to be intermittent printing.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: October 7, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Hideo Yamaki, Shigetaka Kurosu, Hiroshi Morimoto, Satoshi Nishida, Yusuke Nishisaka
  • Image forming apparatus with support belt deforming member
    Patent number: 8849168
    Abstract: An image forming apparatus includes a transfer belt, a pressure receiving roller, a suspension roller, a secondary transfer roller, and an endless support belt. The support belt is stretched over at least one of the pressure receiving roller and the suspension roller. When pressing the transfer belt between the pressure receiving roller and the secondary transfer roller, and nipping paper between the transfer belt and the secondary transfer roller, an angle defined by the portion, upstream from the secondary transfer roller, of the transfer belt and an imaginary line connecting the pressure-receiving-roller axis with the secondary-transfer-roller axis is less than 90 degrees. A part of the support belt is held between the transfer belt and at least one of the two rollers over which the support belt is stretched.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: September 30, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Hideo Yamaki, Satoshi Nishida, Yusuke Nishisaka
  • IMAGE FORMING APPARATUS AND METHOD OF FORMING TONER BAND
    Publication number: 20140286657
    Abstract: Disclosed herein is an image forming apparatus including: an image bearing member; an image forming section that forms a toner image on the image bearing member; a cleaning blade that makes contact with the image bearing member to remove toner on the image bearing member; and a control section that controls the image forming section to form a toner band on the image bearing member during a non-image formation period, the toner band being composed of toner to be provided to the cleaning blade, wherein the control section controls the image forming section to form the toner band on the image bearing member in such a manner that a toner concentration of the toner band on a downstream side in a rotational direction of the image bearing member is lower than an average concentration of the toner band.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 25, 2014
    Applicant: KONICA MINOLTA, INC.
    Inventors: Yusuke NISHISAKA, Satoshi NISHIDA
  • Image forming apparatus
    Patent number: 8837996
    Abstract: An image forming apparatus includes a transfer belt, a pressure receiving roller, a secondary transfer roller, and a belt movement restricting section. The belt movement restricting section is disposed close to the back of the belt. When pressing the belt between the pressure receiving roller and the secondary transfer roller, and nipping paper between the belt and the secondary transfer roller, an angle defined by the portion, upstream from the secondary transfer roller, of the belt and an imaginary line connecting the pressure-receiving-roller axis with the secondary-transfer-roller axis is less than 90 degrees. During non-secondary-transfer mode, the belt movement restricting section is separated from the belt. During secondary transfer, the belt movement restricting section holds the belt not to let the belt pushed by the paper move toward the pressure receiving roller.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: September 16, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Satoshi Nishida, Hideo Yamaki, Yusuke Nishisaka
  • Image heating apparatus
    Patent number: 8831493
    Abstract: An image heating apparatus for heating a toner image formed on a recording material includes a first rotatable member contactable to the toner image; and a heating unit, including a second rotatable member rotating while contacting a surface of the first rotatable member, for heating the first rotatable member. The toner image on the recording material is heated by receiving heat from the first rotatable member heated by the heating unit. The image heating apparatus further includes a potential controller for maintaining a polarity of a surface potential of the second rotatable member so as to be opposite to a charge polarity of the toner.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: September 9, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masashi Tanaka, Kenichi Ogawa, Satoshi Nishida, Kohei Okayasu, Shuichi Tetsuno, Shogo Kan, Takaaki Akamatsu
  • Cleaning device and image forming apparatus
    Patent number: 8811881
    Abstract: A cleaning device, including, a first blade to slidably contact with a surface of an image carrier to which a toner including an external additive adheres, a second blade to slidably contact with the surface of the image carrier and to be provided downstream of the first blade in a rotation direction of the image carrier, and a lubricant applying mechanism section to apply a lubricant to the surface of the image carrier, wherein hardness of the first blade is equal to or more than hardness of the second blade.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: August 19, 2014
    Assignee: Konica Minolta, Inc.
    Inventor: Satoshi Nishida
  • IMAGE FORMING APPARATUS
    Publication number: 20140153950
    Abstract: An image forming apparatus configured to form a toner image on a recording material, includes: an image forming unit configured to form a unfixed toner image on the recording material; a fixing unit configured to heat the recording material where the unfixed toner image is formed while conveying the recording material using a nip portion, and to fix the unfixed toner image on the recording material; and a control unit configured to perform control so that temperature of the fixing unit is maintained in target temperature, with the target temperature (Tn) of a n'th page in consecutive printing being set to the highest temperature of the target temperatures (Tn to Tn+k) according to each of image densities (Dn to Dn+k) at (n to (n+k))'th pages, where integer k21.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: Canon Kabushiki Kaisha
    Inventors: Shogo Kan, Akimichi Suzuki, Satoshi Nishida, Hideo Nanataki, Takanori Mitani
  • Mounting method of cleaning blade and image forming apparatus having cleaning blade
    Patent number: 8670685
    Abstract: A cleaning blade mounting method includes the steps of: moving a toner image carrier on which a toner layer is formed so that the toner layer reaches a cleaning position by a cleaning device; after bringing a tip of a cleaning blade into contact with the toner layer, bringing the tip into contact with the toner image carrier, mounting the cleaning blade to a temporary position with a second load lower than a first load that is a contact load at a time of an image formation; moving the cleaning blade with the second load from the temporary position to a final position at which a cleaning operation is carried out; bringing the cleaning blade with the first load into contact with the toner image carrier; and mounting the cleaning blade to the final position at the time of the image formation.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: March 11, 2014
    Assignee: Konica Minolta Business Technologies, Inc
    Inventor: Satoshi Nishida