Patents Assigned to Speed-O-Print Business Machines Corporation
  • Developer roller for electrostatic copier
    Patent number: 4003334
    Abstract: An electrostatic photocopy machine of the type which uses a magnetic dry toner is disclosed, wherein the toner particles are magnetically attracted to the surface of a developer roller, and thereafter deposited onto the charged image areas on one surface of a copy sheet. The developer roller is provided with an outer shell which is electrically non-conductive, thereby producing improved results in the copy.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: January 18, 1977
    Assignee: Speed-O-Print Business Machines Corporation
    Inventors: Abe Samuels, Roger Wiggerman