Patents by Inventor Yuutaroh NONAKA

Yuutaroh NONAKA 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, ink accommodating unit, printing device and printing method
    Patent number: 11578220
    Abstract: An ink contains water, Pigment Red 269, a compound represented by the following Chemical formula (1), and at least one of a silicone compound and an acetylene glycol compound, where the proportion of the compound represented by the following Chemical formula (1) to the Pigment Red 269 is 2.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: February 14, 2023
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomohiro Nakagawa, Hiroki Hagiwara, Yuutaroh Nonaka, Yuusuke Fujita, Kazuhiko Umemura, Sei Yamamoto
  • Ink and printing method
    Patent number: 11186737
    Abstract: An ink includes water, a compound represented by the following Chemical formula 1, Pigment Red 269 represented by the following Chemical formula 2, and alkylene glycol alkyl ether, wherein the proportion of the compound represented by the following Chemical formula 1 in a total amount of the Pigment Red 269 is 2 or less percent by mass.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: November 30, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tomohiro Nakagawa, Hiroki Hagiwara, Yuutaroh Nonaka, Kazuhiko Umemura
  • INK, INK ACCOMMODATING UNIT, PRINTING DEVICE AND PRINTING METHOD
    Publication number: 20210292578
    Abstract: An ink contains water, Pigment Red 269, a compound represented by the following Chemical formula (1), and at least one of a silicone compound and an acetylene glycol compound, where the proportion of the compound represented by the following Chemical formula (1) to the Pigment Red 269 is 2.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 23, 2021
    Inventors: Tomohiro NAKAGAWA, Hiroki HAGIWARA, Yuutaroh NONAKA, Yuusuke FUJITA, Kazuhiko UMEMURA, Sei YAMAMOTO
  • LIQUID COMPOSITION FOR SURFACE TREATMENT, PRINTING METHOD, AND PRINTING DEVICE
    Publication number: 20200399496
    Abstract: A liquid composition for surface treatment includes a nonionic resin particle, and a multivalent metal salt, wherein the contact angle of water against a film of the liquid composition is 15 or less degrees.
    Type: Application
    Filed: June 9, 2020
    Publication date: December 24, 2020
    Inventors: Yuutaroh NONAKA, Tomohiro Nakagawa, Hiroki Hagiwara, Kazuhiko Umemura, Yuusuke Fujita, Nozomi Terai
  • INK AND PRINTING METHOD
    Publication number: 20200385592
    Abstract: An ink includes water, a compound represented by the following Chemical formula 1, Pigment Red 269 represented by the following Chemical formula 2, and alkylene glycol alkyl ether, wherein the proportion of the compound represented by the following Chemical formula 1 in a total amount of the Pigment Red 269 is 2 or less percent by mass.
    Type: Application
    Filed: June 1, 2020
    Publication date: December 10, 2020
    Inventors: Tomohiro NAKAGAWA, Hiroki HAGIWARA, Yuutaroh NONAKA, Kazuhiko UMEMURA
  • INVENTION IMAGE FORMING METHOD, IMAGE FORMING APPARATUS, IMAGE FORMING SET, AND METHOD OF PRODUCING PRINTED MATTER
    Publication number: 20200262228
    Abstract: An image forming method includes applying a pre-processing fluid to a non-absorptive recording medium, the pre-processing fluid containing a multi-valent metal salt and at least one organic solvent and applying a magenta ink containing C.I. Pigment Red 269 and at least one organic solvent, wherein the mixing SP value of the at least one organic solvent contained in the pre-processing fluid is from 10.0 to 12.0 (cal/cm3), wherein the mixing SP value of the at least one organic solvent contained in the magenta ink is from 12.0 to 14.0 (cal/cm3).
    Type: Application
    Filed: February 19, 2020
    Publication date: August 20, 2020
    Inventors: Hiroki HAGIWARA, Tomohiro NAKAGAWA, Kazuhiko UMEMURA, Yuutaroh NONAKA