Patents by Inventor Donald Franklin Manning

Donald Franklin Manning has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ink jet printer apparatus and method of printing
    Patent number: 4027309
    Abstract: An ink jet printer apparatus and method using ink carrying magnetizable particles, the ink being passed as a stream of droplets sequentially through an electromagnetic field and an electrostatic field, in that order. The droplets are selectively charged electrostatically. All drops are subjected to a time dependent magnetic flux field which effects scans of the drops at a recording surface. Drops not to be used are deflected by electrostatic deflection plates to a gutter.
    Type: Grant
    Filed: April 28, 1976
    Date of Patent: May 31, 1977
    Assignee: International Business Machines Corporation
    Inventors: Donald Franklin Manning, Bruce Allen Wolfe
  • Forms bursting apparatus
    Patent number: 3987949
    Abstract: A forms bursting apparatus having a brake bar which grips a document to be separated, transversely holding the document during the bursting operation. A bursting bar assembly forces the leading document portion against a rotating burster roll. A bursting bar, which grips the document, is swingably mounted for rotation with the bursting roll during the bursting.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: October 26, 1976
    Assignee: International Business Machines Corporation
    Inventors: Donald Franklin Manning, Frederick William Singer, Joseph James Student