Patents by Inventor Werner Schaeffer

Werner Schaeffer 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).

  • Patent number: 7794033
    Abstract: A printing system triggers the print head of a conventional printer cartridge configured per se for water-based printing ink. The printer cartridge print head includes ink ejector elements arranged in a matrix and a heating element of an ink ejector element that is activated by use of an address signal functioning as a line signal and by use of a master signal functioning as a column signal. The master pulses of the master signal have a lesser signal amplitude than the address pulses of the address signal (AS1). The printing ink in the printer cartridge has a high proportion of alcohol.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: September 14, 2010
    Assignee: APS Alternative Printing Services GMBH
    Inventor: Werner Schaeffer
  • Publication number: 20080198190
    Abstract: The invention relates to a printing system for controlling the printing head of a conventional printing cartridge designed for water-based printing ink. Said printing head comprises ink discharging elements arranged in a matrix, and the actuatable heating element of an ink discharging element is activated by means of an address signal operating as a line signal and by means of a starting signal operating as a column signal. The starting pulses of the starting signal (SS2) have a lower signal amplitude than the address pulses of the address signal (AS1) and the printing ink in the printing cartridge (5) has a high alcohol content.
    Type: Application
    Filed: June 30, 2006
    Publication date: August 21, 2008
    Applicant: APS ALTERNATIVE PRINTING SERVICES GMBH
    Inventor: Werner Schaeffer