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Mechanical Memory Means For Typewriter Ribbon Drive Direction

IP.com Disclosure Number: IPCOM000066402D
Original Publication Date: 1979-Mar-01
Included in the Prior Art Database: 2005-Feb-19

Publishing Venue

IBM

Related People

Authors:
Firth, RV [+details]

Abstract

The present structure relates to a means for determining the direction of a ribbon drive in a bidirectional drive system by a mechanical memory device which retains the last drive direction while the machine is off. This avoids the possibility that a particular portion of the ribbon, particularly near a ribbon end, may be subjected to undue wear during repeated on/off cycles to thus cause premature ribbon deterioration.