Patents Assigned to Kanszaki Paper Manufacturing Co. Ltd.
  • Ink composition containing microcapsules
    Patent number: 4936916
    Abstract: A non-aqueous printing ink composition containing a microcapsule and a microencapsulated ink composition characterized in that the microcapsule has a capsule wall comprising melamine-formaldehyde resin and has an average particle size of 1.8 to 3.5.mu..
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: June 26, 1990
    Assignee: Kanszaki Paper Manufacturing Co. Ltd.
    Inventors: Kazuyuki Shinmitsu, Shunsuke Shioi, Makoto Miyake