Patents by Inventor Masana Shiba

Masana Shiba 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: 20110294058
    Abstract: A toner containing a wax, wherein the wax has a mass decrease at 165° C. of 10% by mass or less, a molecular chain consisting of C—H bonds and C—C bonds, and a penetration of 5 mm to 25 mm, wherein a product of a ½ method softening point (° C.) of the toner and an amount of the wax on a surface of the toner is 8 to 20, and wherein the toner is obtained by a method including emulsifying or dispersing in an aqueous medium a toner material liquid, which is a liquid containing a toner material, which contains the wax.
    Type: Application
    Filed: May 24, 2011
    Publication date: December 1, 2011
    Inventors: Masana SHIBA, Takahiro Honda, Tsuneyasu Nagatomo, Naohito Shimota, Ryuta Chiba
  • Publication number: 20110255899
    Abstract: A toner, including a binder; a colorant; and a wax including a molecular chain constituted of only a C—H bond and a C—C bond, and having a melting point of from 50 to 78° C. and a melt viscosity of from 5 to 15 mPa·S at 140° C., wherein the toner has a weight reduction rate of from 0.001 to 0.1% by weight/min when measured by TGA (Thermogarvimetric Analysis) method in an atmosphere at 165° C. for 10 min.
    Type: Application
    Filed: April 13, 2011
    Publication date: October 20, 2011
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yasuaki Iwamoto, Naohito Shimota, Naohiro Watanabe, Satoshi Kojima, Masana Shiba
  • Publication number: 20110076610
    Abstract: A method of manufacturing toner including melting, mixing, and kneading a releasing agent and a coloring agent with at least part of a polyester binder resin, and suspending and granulating an oil phase comprising the binder resin, the coloring agent, and the releasing agent in an aqueous medium.
    Type: Application
    Filed: September 24, 2010
    Publication date: March 31, 2011
    Inventors: Satoshi Ogawa, Tsuyoshi Sugimoto, Naohito Shimota, Hiroshi Yamashita, Masana Shiba, Junichi Awamura
  • Publication number: 20110076607
    Abstract: A toner including at least one polyester resin serving as a binder resin, a colorant, a releasing agent, and a fixing aid, wherein the fixing aid includes a fatty acid amide-based compound, and the fatty acid amide-based compound is at least one of a fatty acid amide compound having a mono- or higher valent amide bond and a fatty acid amide-based compound having a mono- or higher valent amino group or a hydroxyl group.
    Type: Application
    Filed: May 22, 2009
    Publication date: March 31, 2011
    Inventors: Tsuyoshi Sugimoto, Hiroshi Yamashita, Naohiro Watanabe, Shinichi Wakamatsu, Masaki Watanabe, Satoshi Ogawa, Masana Shiba, Junichi Awamura, Naohito Shimota
  • Publication number: 20110033794
    Abstract: A toner containing a binder, a colorant, and a wax having a molecular chain consisting of C—H bond and C—C bond, wherein the mass reduction of the wax at 165° C. is 10% by mass or less, and the total amount of the wax in the toner measured by a DSC method is 1% by mass to 8% by mass, wherein a ratio, Sbet/SF, of a BET specific surface area (Sbet) of the toner to an average circularity (SF) of the toner is 1.0 m2/g or more to less than 3.6 m2/g, wherein the toner is obtained through a process which contains at least emulsifying or dispersing a toner material liquid in an aqueous medium containing a surfactant, and wherein the toner material liquid is a liquid containing toner-forming materials which contains at least the binder, the colorant and the wax.
    Type: Application
    Filed: August 2, 2010
    Publication date: February 10, 2011
    Inventors: Naohiro WATANABE, Naohito SHIMOTA, Yasuaki IWAMOTO, Masana SHIBA, Satoshi KOJIMA, Masaki WATANABE, Tsuneyasu NAGATOMO, Hyo SHU
  • Publication number: 20100310980
    Abstract: A toner, including a colorant; a binder resin; a release agent; and a fixing supplemental component, wherein the toner has a storage elastic modulus G? (Pa) satisfying the following conditions: 5.0×104<G?<5.0×105 at 80° C. 1.0×104<G?<1.0×105 at 90° C. 5.0×103<G?<5.0×104 at 100° C. 1.0×103<G?<1.0×104 at 120° C. 1.0×103<G?<1.0×104 at 150° C.
    Type: Application
    Filed: May 11, 2010
    Publication date: December 9, 2010
    Inventors: Tsuyoshi Sugimoto, Naohito Shimota, Hiroshi Yamashita, Satoshi Ogawa, Masana Shiba, Junichi Awamura, Tsuneyasu Nagatomo, Masaki Watanabe