Patents by Inventor Masahiko Nakamura

Masahiko Nakamura 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: 20100178789
    Abstract: There is provided a connector that allows easy engagement even when visual judgment is not possible and that has superior durability as well. In a connector for connecting a first connecting cable connected to one end of a socket and a second connecting cable connected to one end of a plug, through engagement between the socket and the plug, the socket includes a cutout portion formed by cutting away at least one portion from one opening of a cylinder along the peripheral direction thereof, the cutout portion having a V-shape at its deepest portion, a first guiding portion projecting from at least one portion of the opening along the peripheral direction, the first guiding portion having a substantial V-shape at its leading end, and a retaining portion to be retained to a lateral face of the cylinder at the time of engagement with the plug, thus retaining this engagement.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 15, 2010
    Applicant: HOSIDEN CORPORATION
    Inventors: Yasuhiro Ohmori, Masahiko Nakamura
  • Patent number: 7727698
    Abstract: Disclosed is an image forming method comprising developing a latent electrostatic image formed on the surface of a latent electrostatic image bearing body by a developer borne and conveyed by a developer bearing body which is brought into contact with a developer layer control member to control an amount of the developer on the surface of the developer bearing body through a nonmagnetic single-component development system, wherein an acid value (SAV) of the surface of the developer and a total acid value (TAV) of the developer meet the following requirements: 1<SAV/TAV?5 and 5?TAV?25, and a ratio of a mass average particle size (d50, ?m) of the developer to a surface roughness (Ra, ?m), d50/Ra being in a range of 0.5 to 3.0 and an average spacing (Sm) between protruding peaks of the developer bearing body being in a range of 20 to 200 ?m.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: June 1, 2010
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Eiichi Yoshida, Masahiko Nakamura, Masahiro Anno, Kaori Soeda, Tomoko Mine, Kenichi Onaka
  • Publication number: 20100055976
    Abstract: The present invention provides a connection structure of a circuit board and a connecting device of the present invention including: a connecting device electrically and mechanically connectable to an electronic component; and a circuit board having a surface to mount the connecting device thereon. The connecting device has a locking piece for attaching the connecting device to the surface of the circuit board. The circuit board has an elongated locking hole for receiving the locking piece. The locking piece is adapted to be locked at a lip of the locking hole by sliding or turning the locking piece in a predetermined direction inside the locking hole.
    Type: Application
    Filed: August 27, 2009
    Publication date: March 4, 2010
    Applicant: HOSIDEN CORPORATION
    Inventors: Yasuhiro OHMORI, Masahiko NAKAMURA
  • Publication number: 20090273535
    Abstract: An antenna apparatus includes: a substrate; an RF ground conductor which is branched to extend in at least two directions and at least a part of which is formed on a surface of the substrate, the RF ground conductor functioning as an antenna ground plane; and an antenna portion, one end of which is connected to the RF ground conductor.
    Type: Application
    Filed: June 29, 2007
    Publication date: November 5, 2009
    Inventors: Sung-Gyoo Lee, Masahiko Nakamura, Eiichirou Hirose, Koji Yanao
  • Patent number: 7598013
    Abstract: A toner comprising: (i) toner particles, each toner particle comprising a binder resin and a colorant; and (ii) an oxymonocarboxylic acid or a salt thereof, wherein a total content of the oxymonocarboxylic acid or the salt thereof in the toner is 10 to 173 ppm based on the total weight of the toner.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: October 6, 2009
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Eiichi Yoshida, Masahiko Nakamura, Kaori Soeda, Tomoko Mine, Kenichi Onaka
  • Publication number: 20090239171
    Abstract: It is to provide a toner which can form an image of high image quality exhibiting high resolution wherein a final visible image exhibits high image density and high thin-line reproducibility even in long-term use. In a toner incorporating at least a colored particle containing a binder resin composed of a polyester resin and a colorant, and external additive particles, the toner has a degree of average circularity of 0.950-0.990, a volume based median diameter of 4.5-8.0 ?m, a volume based particle diameter dispersibility (CVVOL value) of 15-25; a metal selected from titanium, germanium, and aluminum is incorporated at a ratio of 10-1500 ppm; the above external additive particles is composed of a composite oxide incorporating a silicon atom and at least either of a titanium atom and an aluminum atom; and the existence ratio of silicon atoms in the surface thereof is higher than the existence ratio of silicon atoms in the entire part thereof.
    Type: Application
    Filed: March 18, 2009
    Publication date: September 24, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Masahiro ANNO, Masahiko NAKAMURA, Tsuyoshi UCHIDA, Kenichi ONAKA, Junya ONISHI, Naoya TONEGAWA
  • Publication number: 20090233202
    Abstract: A two component developer comprising a toner and a carrier, wherein the toner includes: colored particles; and external additive particles comprising a complex oxide incorporating silicon atoms and at least one of titanium atoms and aluminum atoms, and a surface existing ratio of the silicon atoms (R2) in a surface of the external additive particles being larger than an average existing ratio of the silicon atoms (R1) in an entirety of the external additive particles, and carrier particles comprise magnetic material powder dispersed in a phenol-formaldehyde resin, and have an average of the shape coefficient SF-1 of 1.0 to 12 and an average of the shape coefficient SF-2 of 1.1 to 2.5, and a volume based median diameter of from 10 to 100 ?m.
    Type: Application
    Filed: March 4, 2009
    Publication date: September 17, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Masahiro ANNO, Masahiko NAKAMURA, Tsuyoshi UCHIDA, Kenichi ONAKA, Junya ONISHI, Naoya TONEGAWA
  • Publication number: 20090233205
    Abstract: Provided is a two-component developer with which degradation of development is inhibited even in the case of prolonged use, and thereby a high quality image exhibiting high resolution and sufficient image density can be formed for a long duration. Also disclosed is a two-component developer possessing a carrier and a toner, wherein the carrier in which magnetic material powder is dispersed in a binder resin containing a phenol formaldehyde resin has a shape coefficient SF-1 of 1.0-1.2, a shape coefficient SF-2 of 1.1-2.5 and a volume-based median particle diameter of 10-100 ?m, and the toner possesses a colored particle and an external additive particle, wherein the external additive particle comprises a titanic acid compound and iron, and the iron content is 100-1,000 ppm, based on the titanic acid compound.
    Type: Application
    Filed: March 5, 2009
    Publication date: September 17, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Masahiro ANNO, Masahiko NAKAMURA, Tsuyoshi UCHIDA, Kenichi ONAKA, Junya ONISHI, Naoya TONEGAWA
  • Publication number: 20090208862
    Abstract: Provided is a method for forming an image containing the steps of: (a) forming an electrostatic latent image on an electrostatic latent image carrier; and (b) developing the electrostatic latent image by a two component developer comprising a toner and a carrier, wherein the two component developer is continually replenished in the developing step. (b); and the toner includes: colored particles.; and external additive particles comprising a complex oxide incorporating silicon atoms and at least one of titanium atoms and aluminum atoms, and a surface existing ratio of the silicon atoms (R2) in a surface of the external additive particles being larger than an average existing ratio of the silicon atoms (R1) in an entirety of the external additive particles.
    Type: Application
    Filed: February 17, 2009
    Publication date: August 20, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Masahiro ANNO, Masahiko NAKAMURA, Tsuyoshi UCHIDA, Kenichi ONAKA, Junya ONISHI, Naoya TONEGAWA
  • Patent number: 7556905
    Abstract: Provided is an electrostatic charge image developing toner usable for downsized color image forming apparatus capable of rapid print preparation with neither an influence on production cost nor use of a specific material as the toner constituent material. Also disclosed is an electrostatic charge image developing toner possessing at least a resin and a colorant, wherein the electrostatic charge image developing toner contains 12-984 ppm of a polyvalent organic acid or a salt thereof.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: July 7, 2009
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Eiichi Yoshida, Masahiko Nakamura, Kaori Soeda, Tomoko Mine, Kenichi Onaka
  • Publication number: 20090122661
    Abstract: The invention provides a disc changer including a plurality of trays which can be moved respectively in a horizontal direction, a tray driving gear unit capable of shuttling the trays between a standby position and a disc exchange position, a gear driving mechanism for driving the tray driving gear unit, a tray triggering unit capable of locking/unlocking the trays in the standby position, pushing all trays to engage with the tray driving gear unit after unlocking the trays, and driving the trays toward the disc exchange position, wherein the tray driving gear unit can be used for checking the discs by driving all trays to protrude outward from the mechanical chassis to the disc exchange position, and can drive the trays individually from the disc exchange position to the standby position from top to bottom, thereby each disc can be checked until its tray is closed.
    Type: Application
    Filed: October 16, 2006
    Publication date: May 14, 2009
    Inventors: Chi Wei Lee, Mum Pew Ng, Mok Tiong Tan, Rico Paolo O. Ramirez, Masahiko Nakamura, Soon Han Poo, Lay Ghee Tan
  • Publication number: 20090119691
    Abstract: The invention provides a disc changer including a plurality of trays which can be moved respectively in a horizontal direction, a tray driving gear unit capable of shuttling the trays between a standby position and a disc exchange position, a gear driving mechanism for driving the tray driving gear unit, a tray triggering unit capable of locking/unlocking the trays in the standby position, pushing all trays to engage with the tray driving gear unit after unlocking the trays, and driving the trays toward the disc exchange position, wherein all trays in the standby position can be unlocked and pushed to engage with the tray driving gear unit, and ejected outward from a mechanical chassis by a predetermined tray stroke, thereafter the trays are driven back to the standby position one by one, and when the last tray reaches the standby position all trays are locked.
    Type: Application
    Filed: October 16, 2006
    Publication date: May 7, 2009
    Applicants: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., PANASONIC AVC NETWORKS SINGAPORE PTE. LTD.
    Inventors: Chi Wei Lee, Mum Pew Ng, Mok Tiong Tan, Rico Paolo O. Ramirez, Masahiko Nakamura, Soon Han Poo, Lay Ghee Tan
  • Publication number: 20090098744
    Abstract: An adapter of the present invention is used to connect between a lead terminal of an electronic component and a contact of a connecting device. The adapter includes a first connecting part, adapted for electrical and mechanical connection to the lead terminal; a second connecting part, disposed at a spaced relation to the first connecting part in a length direction of the electronic component and connectable to the contact electrically and mechanically; and an elastically deforming part, provided between the first and second connecting parts and elastically deformable in accordance with thermal expansion deformation or thermal contraction deformation in the length direction of the electronic component.
    Type: Application
    Filed: September 4, 2008
    Publication date: April 16, 2009
    Applicant: HOSIDEN CORPORATION
    Inventors: Yasuhiro OHMORI, Masahiko Nakamura
  • Publication number: 20080110835
    Abstract: A method of decolorizing a colored effluent comprising (i) a colored substance; and (ii) a polyvalent carboxylic acid or a polyvalent aminocarboxylic acid, the method including the steps of: (a) controlling a hydrogen ion exponent (pH) of the colored effluent to be in a range in which two or more carboxylic acid groups in the polyvalent carboxylic acid or the polyvalent aminocarboxylic acid does not dissociate; (b) adding an inorganic metal salt to the colored effluent so as to allow the inorganic metal salt to react with the colored substance to form a precipitation in the colored effluent, and (c) eliminating the precipitation from the colored effluent.
    Type: Application
    Filed: October 4, 2007
    Publication date: May 15, 2008
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Eiichi YOSHIDA, Masahiko NAKAMURA, Kaori SOEDA
  • Publication number: 20080008945
    Abstract: A toner is disclosed. The toner comprises a vinyl resin, a colorant, and a compound represented by a formula of Compound 1, Compound 2 ion or Compound 3.
    Type: Application
    Filed: June 19, 2007
    Publication date: January 10, 2008
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Kenichi ONAKA, Masahiko NAKAMURA, Kaori SOEDA, Tomoko MINE, Eiichi YOSHIDA
  • Publication number: 20070298338
    Abstract: An electrophotographic image forming method is disclosed. In the method electrostatic latent image is developed by a non-magnetic single-component developing system, in which a non-magnetic single-component developer is conveyed by a developer carrying member, the developer carrying member is contacted with a developer layer regulation member for regulating an amount of the developer at the surface of the developer carrying member, and a binder resin of the developer comprises a vinyl polymer having an acid value of from about 5 to about 30 and a ratio of hydroxyl group value/acid values from about 0.3 to about 0.8.
    Type: Application
    Filed: May 9, 2007
    Publication date: December 27, 2007
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Masahiko NAKAMURA, Masahiro ANNO, Kaori SOEDA, Tomoko MINE, Kenichi ONAKA, Eiichi YOSHIDA
  • Publication number: 20070297822
    Abstract: Disclosed is an image forming method comprising developing a latent electrostatic image formed on the surface of a latent electrostatic image bearing body by a developer borne and conveyed by a developer bearing body which is brought into contact with a developer layer control member to control an amount of the developer on the surface of the developer bearing body through a nonmagnetic single-component development system, wherein an acid value (SAV) of the surface of the developer and a total acid value (TAV) of the developer meet the following requirements: 1<SAV/TAV?5 and 5?TAV?25, and a ratio of a mass average particle size (d50, ?m) of the developer to a surface roughness (Ra, ?m), d50/Ra being in a range of 0.5 to 3.0 and an average spacing (Sm) between protruding peaks of the developer bearing body being in a range of 20 to 200 ?m.
    Type: Application
    Filed: June 19, 2007
    Publication date: December 27, 2007
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Eiichi YOSHIDA, Masahiko NAKAMURA, Masahiro ANNO, Kaori SOEDA, Tomoko MINE, Kenichi ONAKA
  • Publication number: 20070196759
    Abstract: A toner comprising: (i) toner particles, each toner particle comprising a binder resin and a colorant; and (ii) an oxymonocarboxylic acid or a salt thereof, wherein a total content of the oxymonocarboxylic acid or the salt thereof in the toner is 10 to 173 ppm based on the total weight of the toner.
    Type: Application
    Filed: January 19, 2007
    Publication date: August 23, 2007
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Eiichi YOSHIDA, Masahiko NAKAMURA, Kaori SOEDA, Tomoko MINE, Kenichi ONAKA
  • Publication number: 20070190445
    Abstract: An electrostatic image developing toner is disclosed, comprising a resin and a colorant, wherein the toner contains at least one iminocarboxylic acid or its salt in an amount of from 26 to 388 ppm by mass.
    Type: Application
    Filed: January 24, 2007
    Publication date: August 16, 2007
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Eiichi YOSHIDA, Masahiko NAKAMURA, Kaori SOEDA, Tomoko MINE, Kenichi ONAKA
  • Patent number: D594593
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: June 16, 2009
    Assignee: Hosiden Corporation
    Inventors: Yasuhiro Ohmori, Masahiko Nakamura