Patents by Inventor Masashi Minaki

Masashi Minaki 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: 20210002441
    Abstract: Provided are resin particles which have excellent thermal bondability, excellent low-temperature fixability, excellent heat resistant storage stability and high bonding strength, and which provide a coating film that has high gloss and excellent water resistance. The resin particles are composed of resin particles (X), each of which has a shell layer (S) containing a crystalline polyurethane resin (B) on the surface of a core layer (Q) containing a crystalline resin (A). The maximum peak temperature (Ta) of the heat of fusion of the crystalline resin (A) is 40 to 70° C. and the maximum peak temperature (Tu) of the heat of fusion of the crystalline polyurethane resin (B) is 50 to 90° C.
    Type: Application
    Filed: September 23, 2020
    Publication date: January 7, 2021
    Applicant: Sanyo Chemical Industries, Ltd.
    Inventors: Masashi Minaki, Tsuyoshi Izumi, Yasuaki Ota
  • Patent number: 10216110
    Abstract: Provided is a toner binder which attains all of low-temperature fixing properties, gloss, and hot offset resistance and gives a toner that satisfies the flowability, high-temperature storability, charge stability, pulverizability, image strength, flex cracking resistance, and document anti-offset properties. The present invention is a toner binder which comprises a polyester resins and has a surfactant content of 100 ppm or less and in which the THF-insoluble components and the THF-soluble components respectively have a storage modulus (Pa) at 150° C., G?x150, and the storage modulus (Pa) at 150° C., G?y150, which satisfy the following relationships (1) and (2).
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: February 26, 2019
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Masaru Honda, Tsuyoshi Izumi, Hiroshi Odajima, Masashi Minaki
  • Publication number: 20180039193
    Abstract: Provided is a toner binder which attains all of low-temperature fixing properties, gloss, and hot offset resistance and gives a toner that satisfies the flowability, high-temperature storability, charge stability, pulverizability, image strength, flex cracking resistance, and document anti-offset properties. The present invention is a toner binder which comprises a polyester resins and has a surfactant content of 100 ppm or less and in which the THF-insoluble components and the THF-soluble components respectively have a storage modulus (Pa) at 150° C., G?x150, and the storage modulus (Pa) at 150° C., G?y150, which satisfy the following relationships (1) and (2).
    Type: Application
    Filed: February 22, 2016
    Publication date: February 8, 2018
    Applicant: Sanyo Chemical Industries, Ltd.
    Inventors: Masaru Honda, Tsuyoshi Izumi, Hiroshi Odajima, Masashi Minaki
  • Patent number: 9280074
    Abstract: Provided is a toner binder that is excellent in heat resistant storage properties and hot offset resistance properties and also affords excellent anti-blocking properties of paper when printing continuously. The present invention is directed to a toner binder comprising a crystalline resin (A), wherein the crystalline resin (A) comprises two or more crystalline resins (a) and the endothermic peak temperature group that is composed of all of the endothermic peak temperatures of the respective two or more crystalline resins (a) has two or more different endothermic peak temperatures; and a resin particle containing the toner binder.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: March 8, 2016
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Masashi Minaki, Tsuyoshi Izumi, Taiji Yamashita
  • Publication number: 20150274914
    Abstract: Provided are resin particles which have excellent thermal bondability, excellent low-temperature fixability, excellent heat resistant storage stability and high bonding strength, and which provide a coating film that has high gloss and excellent water resistance. The resin particles are composed of resin particles (X), each of which has a shell layer (S) containing a crystalline polyurethane resin (B) on the surface of a core layer (Q) containing a crystalline resin (A). The maximum peak temperature (Ta) of the heat of fusion of the crystalline resin (A) is 40 to 70° C. and the maximum peak temperature (Tu) of the heat of fusion of the crystalline polyurethane resin (B) is 50 to 90° C.
    Type: Application
    Filed: September 17, 2013
    Publication date: October 1, 2015
    Inventors: Masashi Minaki, Tsuyoshi Izumi, Yasuaki Ota
  • Publication number: 20140272699
    Abstract: Provided is a toner binder that is excellent in heat resistant storage properties and hot offset resistance properties and also affords excellent anti-blocking properties of paper when printing continuously. The present invention is directed to a toner binder comprising a crystalline resin (A), wherein the crystalline resin (A) comprises two or more crystalline resins (a) and the endothermic peak temperature group that is composed of all of the endothermic peak temperatures of the respective two or more crystalline resins (a) has two or more different endothermic peak temperatures; and a resin particle containing the toner binder.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: SANYO CHEMICAL INDUSTRIES, LTD.
    Inventors: Masashi Minaki, Tsuyoshi Izumi, Taiji Yamashita
  • Patent number: 8563207
    Abstract: Disclosed is a toner binder which has high storage stability and can achieve both of good low-temperature fixability and good hot offset resistance (a broadened fixing temperature range). Specifically disclosed is a toner binder comprising, as constituting units, a carboxylic acid component (x) and a polyol component (y), wherein the component (x) comprises two or more kinds of dicarboxylic acids (X1), selected from among aromatic dicarboxylic acids and ester-forming derivatives of the same, in a total amount of 80 mol % or more and a trivalent or higher polycarboxylic acid (x2); the component (y) comprises a polyester resin (P) which is constituted by a polyester resin (A) comprising 80 mol % or more of an aliphatic diol (y1) having 2 to 10 carbon atoms optionally together with a linear polyester resin (B); and the storage modulus at 150° C. [G?150] of resin (A) is 20000 dyn/cm2 or more and the ratio of [G?150] to the storage modulus as 180° C. [G?180] thereof, i.e., [G?150]/[G?180], is 15 of less.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: October 22, 2013
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Masashi Minaki, Shinichi Maeda, Mitsumasa Kamura, Shuichi Shinohara, Yuya Iwagoe
  • Publication number: 20120094228
    Abstract: Disclosed is a toner binder which has high storage stability and can achieve both of good low-temperature fixability and good hot offset resistance (a broadened fixing temperature range). Specifically disclosed is a toner binder comprising, as constituting units, a carboxylic acid component (x) and a polyol component (y), wherein the component (x) comprises two or more kinds of dicarboxylic acids (X1), selected from among aromatic dicarboxylic acids and ester-forming derivatives of the same, in a total amount of 80 mol % or more and a trivalent or higher polycarboxylic acid (x2); the component (y) comprises a polyester resin (P) which is constituted by a polyester resin (A) comprising 80 mol % or more of an aliphatic diol (y1) having 2 to 10 carbon atoms optionally together with a linear polyester resin (B); and the storage modulus at 150° C. [G?150] of resin (A) is 20000 dyn/cm2 or more and the ratio of [G?150] to the storage modulus as 180° C. [G?180] thereof, i.e., [G?150]/[G?180], is 15 of less.
    Type: Application
    Filed: March 31, 2010
    Publication date: April 19, 2012
    Applicant: SANYO CHEMICAL INDUSTRIES, LTD.
    Inventors: Masashi Minaki, Shinichi Maeda, Mitsumasa Kamura, Shuichi Shinohara, Yuya Iwagoe
  • Publication number: 20090269579
    Abstract: An object of the present invention is to provide a multilayer structured particle which can transmit or reflect light having a specific wavelength selectively within a wide range and a simple and easy method for producing the same. The multilayer structured particle of the present invention is characterized in that a central layer (L0) is provided as a core and two or more layers (Ln) are disposed concentrically with respect to the center of the core, wherein every pair of adjacent layers has a refractive index difference of from 0.01 to 1.5 and at least one layer of the central layer (L0) and the layers (Ln) is a metal oxide layer (M).
    Type: Application
    Filed: August 28, 2007
    Publication date: October 29, 2009
    Applicant: SANYO CHEMICAL INDUSTRIES, LTD.
    Inventor: Masashi Minaki
  • Publication number: 20090264578
    Abstract: Disclosed herein is an aqueous dispersion slurry coating material which has excellent storage stability and which can provide a coating film having excellent surface smoothness. The aqueous dispersion slurry coating material includes: an aqueous medium; and contained therein, resin particles (A) comprising a first resin (a); and resin particles (B) comprising a second resin (b), wherein the value of [volume-average particle diameter DA of resin particles (A)]/[volume-average particle diameter DB of resin particles (B)] is in the range of 0.003 to 0.3. It is preferred that the value of DA is in the range of 0.001 to 3 ?m and that the value of DB is in the range of 0.3 to 10 ?m. The resin (a) preferably has a Tg of 0 to 100° C., and the resin (b) preferably has a Tg of ?50 to 50° C. The aqueous dispersion slurry coating material preferably further includes a surfactant and a curing agent.
    Type: Application
    Filed: April 28, 2006
    Publication date: October 22, 2009
    Applicants: Sanyo Chemical Industries, Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Masashi Minaki, Yusuke Yamamoto, Kazuyuki Kuwano, Kazuyuki Tachi, Kanji Mori