Patents by Inventor Danny Keith Chapman

Danny Keith Chapman 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).

  • Method of speed control for imaging system including printers with intelligent options
    Patent number: 6102591
    Abstract: A method of controlling a speed of a print medium through a printer includes the step of providing a print medium transport assembly with a range of print medium transport speeds between a minimum print medium transport speed and a maximum print medium transport speed. A print engine is provided with a print engine speed. The range of print medium transport speeds is divided into subranges of print medium transport speeds. A requested speed is provided to the print medium transport assembly which corresponds to the print engine speed. For each subrange, an acceleration profile control equation, a constant speed control equation, and a deceleration profile control equation is determined. The constant speed control equation is dependent upon the requested speed. One of the subranges of print medium transport speeds is identified which encompasses the requested speed.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: August 15, 2000
    Assignee: Lexmark International, Inc.
    Inventors: Danny Keith Chapman, Steven Wayne Parish, Kevin Dean Schoedinger
  • Method of speed control for imaging system including printers with intelligent options
    Patent number: 5980139
    Abstract: A method of controlling a speed of a print medium through a printer includes the step of providing a print medium transport assembly with a range of print medium transport speeds between a minimum print medium transport speed and a maximum print medium transport speed. A print engine is provided with a print engine speed. The range of print medium transport speeds is divided into subranges of print medium transport speeds. A requested speed is provided to the print medium transport assembly which corresponds to the print engine speed. For each subrange, an acceleration profile control equation, a constant speed control equation, and a deceleration profile control equation is determined. The constant speed control equation is dependent upon the requested speed. One of the subranges of print medium transport speeds is identified which encompasses the requested speed.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: November 9, 1999
    Assignee: Lexmark International, Inc.
    Inventors: Danny Keith Chapman, Steven Wayne Parish, Kevin Dean Schoedinger