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Retracting Optical Transmissive Ribbon Position Sensor Disclosure Number: IPCOM000036783D
Original Publication Date: 1989-Oct-01
Included in the Prior Art Database: 2005-Jan-29

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Related People

Lansing, SG Sickenius, LS Stone, LA [+details]


This article describes a means for detecting printer ribbon presence or printer ribbon edge position using a light-emitting diode (LED) and a retracting photo-detection device that are located on opposite sides of the ribbon.