Patents by Inventor Satoshi Matsunaga

Satoshi Matsunaga 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: 20090308515
    Abstract: A motorcycle tire comprises a tread portion having a tread face curved along a radially outwardly convex arc in the cross section of the tire including the rotational axis of the tire. The tread face is provided in the ground contacting region during straight running with three parallel circumferential grooves which are: a wide circumferential groove having a width Wg1 of from 8 to 16 mm and extending along the tire equator; and a pair of narrow circumferential grooves disposed one on each side of the tire equator and having a width Wg2 less than the width Wg1. Each of the narrow circumferential grooves is positioned such that the distance L1 measured along the tread face from the tire equator to the axially outside edge of the narrow circumferential groove is not more than 35 % of the width (tw) of the ground contacting region during straight running measured along the tread face.
    Type: Application
    Filed: June 12, 2009
    Publication date: December 17, 2009
    Inventor: Satoshi MATSUNAGA
  • Patent number: 7517627
    Abstract: A toner formed of at least a binder resin, a colorant, a charge control agent and a wax, is provided with a uniform state of dispersion of the wax and good balance of low-temperature fixability and anti-high-temperature offset characteristic, while exhibiting good developing performances over wide environmental conditions. The toner is characterized in that (a) the binder resin comprises a hybrid resin component having a polyester unit and a vinyl polymer unit, (b) the toner exhibits a loss tangent (tan ?) of 1.0 at a temperature in a range of 80-160° C., and (c) the toner provides a DSC curve showing a heat-absorption peak in a temperature range of 85-130° C. on temperature increase as measured according to differential scanning calorimetry (DSC).
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: April 14, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryota Kashiwabara, Satoshi Matsunaga
  • Patent number: 7343948
    Abstract: A pneumatic tire for two-wheeled motor vehicles 1 comprises a belt layer 7 and a tread reinforcing layer 9 outside of a single carcass ply 6A made of organic fiber cords. The belt layer 7 is comprised of a belt ply 7A in which steel cords are spirally wound substantially parallel to a tire circumferential direction. The tread reinforcing layer 9 is comprised of a reinforcing ply 9A in which organic fiber cords are aligned to be substantially parallel to the tire circumferential direction. A width RW of the reinforcing ply 9A in a tire axial direction is not less than 30 mm and not more than 90% of a tread grounding width CW.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: March 18, 2008
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Satoshi Matsunaga
  • Publication number: 20070217662
    Abstract: There is provided an electronic apparatus that can scroll an image on a display screen with a simple operation and in various modes. A glide point is provided and a fingerprint sensor is provided adjacently to the glide point. Scroll mode is changed in response to a touch of a finger or thumb on the glide point and a vertical or horizontal movement of the finger or thumb on the glide point and an image on the display screen is scrolled in response to an upward or downward movement of a finger or thumb on the fingerprint sensor.
    Type: Application
    Filed: June 13, 2006
    Publication date: September 20, 2007
    Applicant: FUJITSU LIMITED
    Inventors: Satoshi Matsunaga, Katsunori Masamune
  • Publication number: 20070102089
    Abstract: A tire 2 comprises a tread 4, a sidewall 6, a bead 8, a carcass 10 and a belt 12. The belt 12 includes a belt ply 26. The belt ply 26 is formed by a ribbon 28 wound spirally in a circumferential direction of the tire 2. The carcass 10 includes a first carcass ply 22 and a second carcass ply 24 provided on an outside in a radial direction of the first carcass ply 22. The first carcass ply 22 is turned up around the bead 8. The first carcass ply 22 includes a turned-up portion 34 extended almost outward in the radial direction and a turned-up end 36 positioned on an outside in the radial direction of the turned-up portion 34. The turned-up end 36 is positioned on an inside of the second carcass ply 24.
    Type: Application
    Filed: October 2, 2006
    Publication date: May 10, 2007
    Inventor: Satoshi Matsunaga
  • Patent number: 7214460
    Abstract: To provide a yellow toner allowing formation of an image with an excellent transparency for an OHP, an excellent coloring power, and an excellent light resistance. In the yellow toner including at least a yellow pigment containing a monoazo compound represented by the following formula (1), the value of a* is in the range of ?5 to +14 when b* is +80 with respect to a transmission chromaticity of an image formed on a transparency sheet. (wherein X1 to X6 each independently denotes a substituent selected from the group consisting of a hydrogen atom, a C1–3 alkyl group, a C1–3 alkoxyl group, a nitro group, a halogen group, a sulfonic group, a sulfamoyl group, a sulfamoyl group substituted with an aromatic group, a carboxyl group, and a carboxylate; each may bond with another to form a benzene ring or an imidazolone ring.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: May 8, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Ishii, Takaaki Kotaki, Satoshi Matsunaga
  • Patent number: 7090951
    Abstract: There is disclosed a toner which comprises at least a binder resin, a coloring agent, and a wax and in which a deformation amount of the toner (R200) at the time of application of a load of 200 g at a temperature of 120° C. is 45% to 75% and in which a deformation amount of the toner (R500) at the time of application of a load of 500 g at a temperature of 120° C. is 65% to 85% and in which there is at least one endothermic peak or shoulder in a range at 60 to 120° C. in a DSC curve at the time of temperature rise measured by a differential scanning calorimeter (DSC). By the toner, an offset can be inhibited from being generated in heating/pressurizing/fixing in which an oil for preventing a high-temperature offset is not used or a use amount of the oil is reduced, and an OHP fixed image superior in transparency can be obtained.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: August 15, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Matsunaga, Atsushi Ishii
  • Publication number: 20060134543
    Abstract: A toner formed of at least a binder resin, a colorant, a charge control agent and a wax, is provided with a uniform state of dispersion of the wax and good balance of low-temperature fixability and anti-high-temperature offset characteristic, while exhibiting good developing performances over wide environmental conditions. The toner is characterized in that (a) the binder resin comprises a hybrid resin component having a polyester unit and a vinyl polymer unit, (b) the toner exhibits a loss tangent (tan ?) of 1.0 at a temperature in a range of 80-160° C., and (c) the toner provides a DSC curve showing a heat-absorption peak in a temperature range of 85-130° C. on temperature increase as measured according to differential scanning calorimetry (DSC).
    Type: Application
    Filed: December 16, 2005
    Publication date: June 22, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Ryota Kashiwabara, Satoshi Matsunaga
  • Patent number: 7056634
    Abstract: To provide a yellow toner allowing formation of an image with an excellent transparency for an OHP, an excellent coloring power, and an excellent light resistance. In the yellow toner including at least a yellow pigment containing a monoazo compound represented by the following formula (1), the value of a* is in the range of ?5 to +14 when b* is +80 with respect to a transmission chromaticity of an image formed on a transparency sheet. (wherein X1 to X6 each independently denotes a substituent selected from the group consisting of a hydrogen atom, a C1–3 alkyl group, a C1–3 alkoxyl group, a nitro group, a halogen group, a sulfonic group, a sulfamoyl group, a sulfamoyl group substituted with an aromatic group, a carboxyl group, and a carboxylate; each may bond with another to form a benzene ring or an imidazolone ring.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: June 6, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Ishii, Takaaki Kotaki, Satoshi Matsunaga
  • Patent number: 7026086
    Abstract: A toner formed of at least a binder resin, a colorant, a charge control agent and a wax, is provided with a uniform state of dispersion of the wax and good balance of low-temperature fixability and anti-high-temperature offset characteristic, while exhibiting good developing performances over wide environmental conditions. The toner is characterized in that (a) the binder resin comprises a hybrid resin component having a polyester unit and a vinyl polymer unit, (b) the toner exhibits a loss tangent (tan ?) of 1.0 at a temperature in a range of 80–160° C., and (c) the toner provides a DSC curve showing a heat-absorption peak in a temperature range of 85–130° C. on temperature increase as measured according to differential scanning calorimetry (DSC).
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: April 11, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryota Kashiwabara, Satoshi Matsunaga
  • Publication number: 20060008726
    Abstract: To provide a yellow toner allowing formation of an image with an excellent transparency for an OHP, an excellent coloring power, and an excellent light resistance. In the yellow toner including at least a yellow pigment containing a monoazo compound represented by the following formula (1), the value of a* is in the range of ?5 to +14 when b* is +80 with respect to a transmission chromaticity of an image formed on a transparency sheet. (wherein X1 to X6 each independently denotes a substituent selected from the group consisting of a hydrogen atom, a C1-3 alkyl group, a C1-3 alkoxyl group, a nitro group, a halogen group, a sulfonic group, a sulfamoyl group, a sulfamoyl group substituted with an aromatic group, a carboxyl group, and a carboxylate; each may bond with another to form a benzene ring or an imidazolone ring.
    Type: Application
    Filed: September 13, 2005
    Publication date: January 12, 2006
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Atsushi Ishii, Takaaki Kotaki, Satoshi Matsunaga
  • Publication number: 20060000534
    Abstract: A pneumatic tire for two-wheeled motor vehicles 1 comprises a belt layer 7 and a tread reinforcing layer 9 outside of a single carcass ply 6A made of organic fiber cords. The belt layer 7 is comprised of a belt ply 7A in which steel cords are spirally wound substantially parallel to a tire circumferential direction. The tread reinforcing layer 9 is comprised of a reinforcing ply 9A in which organic fiber cords are aligned to be substantially parallel to the tire circumferential direction. A width RW of the reinforcing ply 9A in a tire axial direction is not less than 30 mm and not more than 90% of a tread grounding width CW.
    Type: Application
    Filed: May 31, 2005
    Publication date: January 5, 2006
    Inventor: Satoshi Matsunaga
  • Patent number: 6846601
    Abstract: In a negatively chargeable toner having i) negatively chargeable toner particles containing at least a binder resin, a colorant and a vinyl copolymer and ii) an inorganic fine powder, the negatively chargeable toner has a weight-average particle diameter of from 4 ?m to 12 ?m and contains, in particle size distribution of the toner, less than 50% by volume of particles of 10.1 ?m or more in particle diameter, and the vinyl copolymer is a vinyl copolymer obtained by copolymerizing a monomer composition which contains at least i) a vinyl monomer such as an N-substituted acryl- or methacrylamide or a ring-structure acryl- or methacrylamide and ii) a vinyl monomer having as a functional group a carboxyl group or a carboxyl group made into salt structure. An image-forming method and a process cartridge make use of such a negatively chargeable toner.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: January 25, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Minoru Shimojo, Satoshi Matsunaga
  • Publication number: 20040115549
    Abstract: To provide a yellow toner allowing formation of an image with an excellent transparency for an OHP, an excellent coloring power, and an excellent light resistance. In the yellow toner including at least a yellow pigment containing a monoazo compound represented by the following formula (1), the value of a* is in the range of −5 to +14 when b* is +80 with respect to a transmission chromaticity of an image formed on a transparency sheet.
    Type: Application
    Filed: October 9, 2003
    Publication date: June 17, 2004
    Inventors: Atsushi Ishii, Takaaki Kotaki, Satoshi Matsunaga
  • Publication number: 20040072087
    Abstract: There is disclosed a toner which comprises at least a binder resin, a coloring agent, and a wax and in which a deformation amount of the toner (R200) at the time of application of a load of 200 g at a temperature of 120° C. is 45% to 75% and in which a deformation amount of the toner (R500) at the time of application of a load of 500 g at a temperature of 120° C. is 65% to 85% and in which there is at least one endothermic peak or shoulder in a range at 60 to 120° C. in a DSC curve at the time of temperature rise measured by a differential scanning calorimeter (DSC). By the toner, an offset can be inhibited from being generated in heating/pressurizing/fixing in which an oil for preventing a high-temperature offset is not used or a use amount of the oil is reduced, and an OHP fixed image superior in transparency can be obtained.
    Type: Application
    Filed: October 8, 2003
    Publication date: April 15, 2004
    Inventors: Satoshi Matsunaga, Atsushi Ishii
  • Patent number: 6703176
    Abstract: A toner contains at least a bonding resin and a coloring agent, and has a weight mean particle size from 5 &mgr;m to 12 &mgr;m; not less than 90% by number of particles not less than 3 &mgr;m have a circularity “a” not less than 0.900; a cut ratio Z and a weight mean size X of the toner are related as: cut ratio Z≦5.3×X; and a relationship of particles Y having a circularity of not less than 0.950 and a weight mean size X is Y≧e5.51×X−0.645 where X is 5 to 12 &mgr;m.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: March 9, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Naka, Yuichi Mizoo, Satoshi Matsunaga, Masami Azuma, Takashige Kasuya, Tadashi Dojo, Tsuneo Nakanishi, Nene Shibayama, Katsuhisa Yamazaki, Yusuke Hasegawa
  • Publication number: 20030224275
    Abstract: In a negatively chargeable toner having i) negatively chargeable toner particles containing at least a binder resin, a colorant and a vinyl copolymer and ii) an inorganic fine powder, the negatively chargeable toner has a weight-average particle diameter of from 4 &mgr;m to 12 &mgr;m and contains, in particle size distribution of the toner, less than 50% by volume of particles of 10.1 &mgr;m or more in particle diameter, and the vinyl copolymer is a vinyl copolymer obtained by copolymerizing a monomer composition which contains at least i) a vinyl monomer such as an N-substituted acryl- or methacrylamide or a ring-structure acryl- or methacrylamide and ii) a vinyl monomer having as a functional group a carboxyl group or a carboxyl group made into salt structure. An image-forming method and a process cartridge make use of such a negatively chargeable toner.
    Type: Application
    Filed: March 10, 2003
    Publication date: December 4, 2003
    Inventors: Minoru Shimojo, Satoshi Matsunaga
  • Patent number: 6653038
    Abstract: A toner is formed of toner particles each comprising at least a binder resin, a colorant and a wax, and inorganic fine powder. The toner is characterized by (a) containing a sulfur-containing polymer, and (b) showing dielectric loss tangent (tan&dgr;) values at 100 kHz assuming a maximum of 2.5×10−2 to 8×10−2 in a temperature range of 100 to 130° C. Because of the combination of the features (a) and (b), the toner can exhibit a good combination of developing performances and fixing performances.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: November 25, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Matsunaga, Junko Yoshikawa, Ryota Kashiwabara
  • Patent number: 6613490
    Abstract: A toner exhibiting good balance of low-temperature fixability, an anti-offset characteristic and a developing performance in continuous image formation is formed of at least a binder resin, a colorant and a wax. The toner exhibits a dielectric loss tangent showing a maximum of 6.0×10−2 to 10.0×10−2 in a temperature range of 90 to 125° C. The toner provides a DSC curve showing at least one heat-absorption peak or shoulder in a temperature range of 85 to 140° C. on temperature increase according to differential scanning calorimetry (DSC). The binder resin comprises a hybrid resin having a vinyl polymer unit and a polyester unit.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: September 2, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Matsunaga, Yuichi Mizoh, Junko Yoshikawa, Ryota Kashiwabara
  • Publication number: 20030134215
    Abstract: A toner formed of at least a binder resin, a colorant, a charge control agent and a wax, is provided with a uniform state of dispersion of the wax and good balance of low-temperature fixability and anti-high-temperature offset characteristic, while exhibiting good developing performances over wide environmental conditions. The toner is characterized in that (a) the binder resin comprises a hybrid resin component having a polyester unit and a vinyl polymer unit, (b) the toner exhibits a loss tangent (tan &dgr;) of 1.0 at a temperature in a range of 80-160° C., and (c) the toner provides a DSC curve showing a heat-absorption peak in a temperature range of 85-130° C. on temperature increase as measured according to differential scanning calorimetry (DSC).
    Type: Application
    Filed: August 6, 2002
    Publication date: July 17, 2003
    Inventors: Ryota Kashiwabara, Satoshi Matsunaga