Improved Grounding for Electroerosion Printer
Original Publication Date: 1983-May-01
Included in the Prior Art Database: 2005-Feb-07
A brush 10, having stainless steel filaments 11, is mounted immediately adjacent the printhead 12 of an electroerosion printer 13. The brush filaments 11 make good contact with the conductive surface 14 of the print paper without interfering with the true feeding of the paper past feed roll 15. Three brushes 10 are provided to span substantially the entire width of the paper 14 so as to minimize the conductive distance at any print position of printhead 12, thereby minimizing radio interference emission. The use of a dense, fine multi-filament brush provides maximum contact area with the paper and a large amount of surface area for a ground path as is necessary to dissipate high frequency current that is emitted, as well as to provide a good ground path for the lower frequencies.