Patents by Inventor Mizuki KUROHA

Mizuki KUROHA 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).

  • Ink, image forming apparatus, and image forming method
    Patent number: 11760893
    Abstract: An ink including a pigment, water, and a resin is provided. An image formed with the ink on a print medium has a tack force of 6 gf or greater but 13 gf or less when measured at a probe temperature of 100 degrees C., where the image is a solid image formed at a resolution of 1,200 dpi, subsequently irradiated with light of 395 nm for 0.6 seconds, and left to stand at normal temperatures and normal humidities for 30 seconds.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: September 19, 2023
    Assignee: Ricoh Company, Ltd.
    Inventors: Kento Sugita, Yuuki Yokohama, Azumi Miyaake, Satoshi Takahashi, Koichiro Oyama, Mizuki Kuroha
  • LIQUID COMPOSITION, METHOD OF APPLYING LIQUID, DEVICE FOR APPLYING LIQUID, PRE-PROCESSING FLUID, AND SET OF PRE-PROCESSING FLUID AND INK
    Publication number: 20220251409
    Abstract: A liquid composition contains a macrocyclic compound enclosing a metal ion, water, and an organic solvent, wherein a recording medium where the liquid composition has been applied has at least one of an antibacterial activity or an antiviral activity.
    Type: Application
    Filed: January 27, 2022
    Publication date: August 11, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Shun SAITO, Kento Sugita, Koichiro Oyama, Mizuki Kuroha, Satoshi Takahashi, Yuuki Yokohama, Takashi Watanabe
  • INK, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD
    Publication number: 20220010155
    Abstract: An ink including a pigment, water, and a resin is provided. An image formed with the ink on a print medium has a tack force of 6 gf or greater but 13 gf or less when measured at a probe temperature of 100 degrees C., where the image is a solid image formed at a resolution of 1,200 dpi, subsequently irradiated with light of 395 nm for 0.6 seconds, and left to stand at normal temperatures and normal humidities for 30 seconds.
    Type: Application
    Filed: July 8, 2021
    Publication date: January 13, 2022
    Inventors: Kento SUGITA, Yuuki YOKOHAMA, Azumi MIYAAKE, Satoshi TAKAHASHI, Koichiro OYAMA, Mizuki KUROHA
  • INK, INK STORED CONTAINER, PRINTING DEVICE, AND PRINTING METHOD
    Publication number: 20210292582
    Abstract: Provided is an ink including: a pigment-containing matter containing a pigment; an organic solvent; water; and a compound represented by General Formula (1) below. A difference (Ra?R0) is 2.0 or less, where Ra is a distance between a Hansen solubility parameter of the organic solvent and a Hansen solubility parameter of the pigment-containing matter determined by a Hansen solubility sphere method, and R0 is an interaction radius of the pigment-containing matter determined by the Hansen solubility sphere method. In the General Formula (1), R1, R2, R3, and R4 each independently represent a hydrogen atom or an alkyl group having 1 or more but 5 or less carbon atoms, and n represents an integer of 3 or more but 11 or less.
    Type: Application
    Filed: March 10, 2021
    Publication date: September 23, 2021
    Inventors: Atsufumi HANAZAWA, Yuuki YOKOHAMA, Takashi TAMAI, Yukihiro IMANAGA, Kento SUGITA, Azumi MIYAAKE, Sayuri KOJIMA, Toru YOSHIKAWA, Koichiro OYAMA, Satoshi TAKAHASHI, Mizuki KUROHA
  • INK, INKJET INK, INK CONTAINER, IMAGE FORMING METHOD, AND IMAGE FORMING DEVICE
    Publication number: 20210238432
    Abstract: An ink contains water, an organic solvent, a resin, and a pigment, wherein the organic solvent has a Hansen solubility parameter (HSP) value in a Hansen sphere in a ?D axis, ?P axis, and ?H axis coordinate space of a solid content of the ink.
    Type: Application
    Filed: February 2, 2021
    Publication date: August 5, 2021
    Inventors: Toru YOSHIKAWA, Yuuki YOKOHAMA, Takashi TAMAI, Satoshi TAKAHASHI, Sayuri KOJIMA, Atsufumi HANAZAWA, Azumi MIYAAKE, Yukihiro IMANAGA, Koichiro OYAMA, Kento SUGITA, Mizuki KUROHA