Patents by Inventor Friedrich Fleck

Friedrich Fleck 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).

  • Optical character generator for an electro photographic printer
    Patent number: 5488404
    Abstract: A plurality of light-emitting diode chips (2) densely packed in the form of rows is associated with driver chips (34) and associated drive chips (3) on both sides. The printing information is supplied from a printer control (6) via a bus system (4, 4' and 5, 5'). Each light-emitting diode chip is subdivided into n groups of light-emitting diodes (for example LED1, LED3, LED5 . . . LED31 and LED98, LED100 . . . LED128), which are arranged geometrically offset with respect to one another transversely to the main direction of the diode row. Each drive chip contains a switching unit (32) for generating internal sequence control signals (for example SWE1, SWE2, I-CLK) and n part-circuits (33/0 to 33/3) associated with the n groups of light-emitting diodes for the simultaneous processing of the printing information into temporally staggered drive signals (DS).
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: January 30, 1996
    Assignee: Siemens Aktiengesellschaft
    Inventors: Friedrich Fleck, Klaus-Dieter Jorgens