Patents by Inventor Patricia G. Butterfield

Patricia G. Butterfield 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).

  • Print head alignment method, test pattern used in the method, and a system thereof
    Patent number: 6685297
    Abstract: A method of aligning one or more print heads in a print head unit and a system thereof. A first pattern of first symbols is printed on a print medium and a second pattern of second symbols is printed with a second print head on the print medium with one or more print heads in a manner to superpose the second pattern on the first pattern and so that at least some of the first symbols obscure a corresponding one of the second symbols. At least some of the second symbols are offset from a regular pattern and the offset distances are recorded. A user can designate at least one of the second symbols that is obscured by a corresponding one of the first symbols and the offset distance corresponding to the designated second symbol is used as an offset parameter for the second print head with respect to the first print head.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: February 3, 2004
    Assignee: Xerox Corporation
    Inventors: Patricia G. Butterfield, Steven R. Moore, Richard H. Tuhro
  • Print head alignment method, test pattern used in the method, and a system thereof
    Publication number: 20030058294
    Abstract: A method of aligning one or more print heads in a print head unit and a system thereof. A first pattern of first symbols is printed on a print medium and a second pattern of second symbols is printed with a second print head on the print medium with one or more print heads in a manner to superpose the second pattern on the first pattern and so that at least some of the first symbols obscure a corresponding one of the second symbols. At least some of the second symbols are offset from a regular pattern and the offset distances are recorded. A user can designate at least one of the second symbols that is obscured by a corresponding one of the first symbols and the offset distance corresponding to the designated second symbol is used as an offset parameter for the second print head with respect to the first print head.
    Type: Application
    Filed: September 24, 2001
    Publication date: March 27, 2003
    Applicant: Xerox Corporation
    Inventors: Patricia G. Butterfield, Steven R. Moore, Richard H. Tuhro