Patents by Inventor MEGUMI MORIYA

MEGUMI MORIYA 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: 20240241460
    Abstract: Provided is such a toner that a pigment is dispersed in a toner particle containing a large amount of a crystalline resin, that is, a toner excellent in low-temperature fixability and coloring power, wherein the toner is a toner including a toner particle containing a binder resin, a pigment and a pigment dispersant, wherein the binder resin contains 20.0% by mass or more and 100.0% by mass or less of a crystalline resin, wherein the pigment dispersant is a polymer containing a specific structure that interacts with the pigment and a specific monomer unit that interacts with the crystalline resin.
    Type: Application
    Filed: December 21, 2023
    Publication date: July 18, 2024
    Inventors: NAOYA ISONO, MARIKO YAMASHITA, KENJI AOKI, TATSUYA SAEKI, YUKI MASUDA, MEGUMI MORIYA
  • Publication number: 20240231251
    Abstract: Provided is such a toner that a pigment is dispersed in a toner particle containing a large amount of a crystalline resin, that is, a toner excellent in low-temperature fixability and coloring power. The toner is a toner including a toner particle containing a binder resin, a pigment and a pigment dispersant, wherein the binder resin contains from 20.0% to 100.0% by mass of a crystalline resin, wherein the pigment dispersant is a polymer containing a specific structure that interacts with the pigment and a specific polymer moiety that interacts with the crystalline resin.
    Type: Application
    Filed: December 21, 2023
    Publication date: July 11, 2024
    Inventors: NAOYA ISONO, MARIKO YAMASHITA, KENJI AOKI, TATSUYA SAEKI, YUKI MASUDA, MEGUMI MORIYA
  • Publication number: 20240192617
    Abstract: A toner comprises a toner particle, wherein the toner contains a crystalline vinyl resin and an amorphous resin, a weight-average particle diameter of the toner is from 4.0 to 12.0 m, an endothermic quantity ?H derived from the crystalline vinyl resin is from 10 to 70 J/g, and in an analysis by time-of-flight secondary ion mass spectrometry of the toner particle while under sputtering, with A(100) as the ion amount of a specific hydrocarbon over a sputtering time during which 100 nm of a polymethyl methacrylate standard sample film are shaved, the ion amount exhibits one or more peak values, and with A(dmax) as a maximum value from among the peak values, the above A(dmax) and A(100) satisfy the expression below. 1.5?A(dmax)/A(100)?30.
    Type: Application
    Filed: November 6, 2023
    Publication date: June 13, 2024
    Inventors: TATSUYA SAEKI, KENJI AOKI, NAOYA ISONO, MARIKO YAMASHITA, YUKI MASUDA, MEGUMI MORIYA
  • Publication number: 20240192618
    Abstract: The toner of the present disclosure comprises a toner particle containing a crystalline resin A, an amorphous resin B, and a release agent, wherein the resin A contains a specific amount of a unit (a) and is contained in a specific amount in the toner, the resin B is contained in a specific amount in the toner, the total content of the resin A and the resin B is 50.0 mass % or more based on the mass of the toner, when a component W having a molecular weight of 5000 or less is isolated from the toner by a certain procedure, the content of the component W is from 0.5 mass % to 20.0 mass % based on the mass of the toner, and the maximum endothermic peak temperature of the component W and the endothermic peak temperature derived from the component W of the toner satisfy a certain requirement.
    Type: Application
    Filed: November 21, 2023
    Publication date: June 13, 2024
    Inventors: YUKI MASUDA, KENJI AOKI, NAOYA ISONO, MARIKO YAMASHITA, TATSUYA SAEKI, MEGUMI MORIYA