Patents Assigned to Printer Associates
  • Matrix printing cell and head assembly
    Patent number: 4218148
    Abstract: An improved printing cell and head for dot matrix impact printers, including an armature of exceptionally low mass mounted on a pair of straight, cylindrical spring elements, and driven by a pair of coils wired in parallel. By careful selection of the ramp angle of respective pole faces, and a resilient preset and energy-absorbing device, printing speeds of 2,500 Hz can be achieved with remarkably quiet operation.
    Type: Grant
    Filed: November 18, 1977
    Date of Patent: August 19, 1980
    Assignee: Printer Associates
    Inventor: Arthur L. Matschke