Ink ribbon transport motor controller - uses sensor detecting identification markings for ink ribbon contained in cassette

摘要

The motor control uses a sensor device for scanning markings carried by the circular flange (41) of the ink ribbon take-up spool (33), identifying the ink ribbon (23). The sensor fits through an opening (45) in the base (46) of the cassette housing, the spool flange (41) contained within a recess (83) in the base (46) for lying in the same plane as the latter. The sensor uses a light source (48) and a photosensor, the markings in the form of a bar code. USE/ADVANTAGE - For printer simple identification of ink ribbon type.