Patents by Inventor David Francis Fritz

David Francis Fritz 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).

  • Variable power thermal printer
    Patent number: 6503006
    Abstract: A printer using a power reduction logic based upon reducing the speed of printing when the dot utilization calculation exceeds a particular power level for that printer. There is also provided a method for printing information at a given power supply capacity level, comprising the steps of: examining the a group of rows of dots to be printed; calculating the maximum dot utilization value for the group; selecting a print speed based on the maximum dot utilization value; printing the first row of the group of rows; and repeating above steps until the information is printed.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: January 7, 2003
    Assignee: International Business Machines Corporation
    Inventors: Sharon Corinne Freedman, David Francis Fritz, Robert William Kruppa, Robert Dean Yoder
  • Variable power thermal printer
    Patent number: 6234695
    Abstract: A printer using a power reduction logic based upon reducing the speed of printing when the dot utilization calculation exceeds a particular power level for that printer. There is also provided a method for printing information at a given power supply capacity level, comprising the steps of: examining the a group of rows of dots to be printed; calculating the maximum dot utilization value for the group; selecting a print speed based on the maximum dot utilization value; printing the first row of the group of rows; and repeating above steps until the information is printed.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: May 22, 2001
    Assignee: International Business Machines Corporation
    Inventors: Sharon Corinne Freedman, David Francis Fritz, Robert William Kruppa, Robert Dean Yoder