Wire Matrix Printer Diagnostics using Hourglass Characters
Original Publication Date: 1978-Mar-01
Included in the Prior Art Database: 2005-Feb-20
Simplified diagnostic procedures are available as a result of the characteristics of an hourglass character which enable rapid identification of a missing print wire in a wire matrix printer. Reversibility of the wire driver circuit card permits inversion of the cable to the print head. By inverting the cable connections, the wire assignments change according to Fig. 1.