Patents Assigned to Ricob Company, Ltd.
  • Patent number: 7645035
    Abstract: The present invention provides an ink set which includes a combination of a recording liquid including a resin-coated colorant, and a treatment liquid including a particle which has a reactivity with the resin-coated colorant. The ink set can obtain a high quality image free from feathering and color bleeding, can obtain a high quality image even when used for printing on a plain paper sheet, can obtain a print excellent in wear resistance, can obtain a high image density without causing a deep permeation of a recording liquid in the paper sheet, can perform a favorable double-sided printing with a low image density when the image is viewed from an opposite face of an image print face, can be free from an image stain attributable to drying failure of the recording liquid, and can provide the print with a proper glossiness.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: January 12, 2010
    Assignee: Ricob Company, Ltd.
    Inventors: Hiroshi Adachi, Juichi Furukawa