Patents Assigned to Colorkrome, Inc.
  • Patent number: 4052298
    Abstract: Electrophotographic toner compositions, particularly concentrates, are emulsified in water; then subject to pigment and associated charged body material extraction by a mineral spirit liquid which is rich in charge control agent; after which separation the emulsified composition and the extracted pigment material are individually recovered for re-use or other desired disposition.
    Type: Grant
    Filed: November 26, 1974
    Date of Patent: October 4, 1977
    Assignee: Colorkrome, Inc.
    Inventor: Edward T. Bradley
  • Patent number: 4011568
    Abstract: A compact electrophotographic camera for use in conjunction with an electrophotographic print having an electrically charged electrophotoconductive surface with the charged surface being covered with a sheet of dielectric material. As the print is advanced in the camera, the dielectric protective cover is stripped away by reverse passage over a roll. The electrophotographic print is then located on a support in the field of vision of the lens and is exposed. The sheet is then advanced to a toner applicator and is subsequently advanced out of the camera.
    Type: Grant
    Filed: November 1, 1974
    Date of Patent: March 8, 1977
    Assignee: Colorkrome, Inc.
    Inventors: Charles D. Oughton, Edward T. Bradley