Patents Assigned to Research Hildings Pty. Limited
  • Dry toner and method of making same
    Patent number: 4447516
    Abstract: Microcapsular electroscopic marking particles produced by the interfacial polycondensation process using a volatile solvent for production of its pressure fixable marking medium and having a polymeric shell which is discontinuous at least during heat drying of the particles to allow the volatile solvent to be expelled from the particle.
    Type: Grant
    Filed: September 22, 1982
    Date of Patent: May 8, 1984
    Assignee: Research Hildings Pty. Limited
    Inventor: Josef Matkan