Patents by Inventor Masashi Tsujimura

Masashi Tsujimura 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).

  • Reaction solution, set of reaction solution and ink, ink jet recording apparatus and image recording method
    Publication number: 20040104986
    Abstract: A reaction solution to be used for image recording with an ink containing a coloring material in a dissolved or dispersed state in order to achieve a high level of image density with stability, wherein the reaction solution contains a polyvalent metal ion and an organic solvent to destabilize the dissolved or dispersed state of the coloring material in the ink in contact with the ink, has a pH of 2 or higher, and has a buffering action for pH, wherein the buffering action means it can maintain pH variation within the range of 0.5 before and after the addition of 1.0 ml of a 0.1 N aqueous lithium hydroxide solution to 50 ml of the reaction solution.
    Type: Application
    Filed: September 15, 2003
    Publication date: June 3, 2004
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yasuhiro Nito, Shinya Mishina, Shinichi Hakamada, Yoichi Takada, Toshifumi Akasaka, Masashi Tsujimura