Patents Assigned to Ricoh Cpmpany, Ltd.
  • Publication number: 20230303869
    Abstract: An ink discharging device contains an ink containing an organic solvent with an SP value of from 9.0 to 12.0, a white pigment, a polyurethane resin with a glass transition temperature Tg of 0 degrees C. or lower, and water, and an ink discharging unit including a nozzle plate including a liquid repellent layer containing a silicone resin, the ink discharging unit for discharging the ink, wherein the proportion of the organic solvent to the entire of the ink is from 0.5 to 2.5 percent by mass and the proportion of the white pigment to the entire of the ink is from 6 to 15 percent by mass.
    Type: Application
    Filed: March 16, 2023
    Publication date: September 28, 2023
    Applicant: Ricoh Cpmpany, Ltd.
    Inventors: Daisuke Ozaki, Toshiyuki Kobashi, Hiroshi Gotou, Ayaka Tanaka, Juichi Furukawa