Patents Assigned to Black Copy Company, Inc.
  • Dual purpose magnetic toner
    Patent number: 4345013
    Abstract: A free-flowing, non-spherical, fragmentary, toner particle is prepared by blending a mixture of thermoplastic resins with magnetic iron oxide. The dispersion is processed to a fine powder and dry blended with conductive carbon black which is anchored onto the surface of the particle by warm air or gas.
    Type: Grant
    Filed: February 28, 1977
    Date of Patent: August 17, 1982
    Assignee: Black Copy Company, Inc.
    Inventors: Arthur S. Diamond, Sydney N. Floersheim
  • Dual purpose electrophotographic magnetic toner and process of making
    Patent number: 4288519
    Abstract: A free-flowing, non-spherical, fragmentary, toner particle is prepared by blending a mixture of thermoplastic resins with magnetic iron oxide. The dispersion is processed to a fine powder and dry blended with conductive carbon black which is anchored onto the surface of the particle by warm air or gas.
    Type: Grant
    Filed: December 20, 1977
    Date of Patent: September 8, 1981
    Assignee: Black Copy Company, Inc.
    Inventors: Arthur S. Diamond, Sydney N. Floersheim