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Wire Matrix Printer Diagnostics using Hourglass Characters

IP.com Disclosure Number: IPCOM000068860D
Original Publication Date: 1978-Mar-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Bigbie, SE Cavill, BR Kennedy, PJ [+details]

Abstract

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.