| 摘要 |
A printer ribbon spool comprising an integral element, molded in one piece from a durable plastic composition, such as of nylon, has an elongate cylindrical ribbon support shaft of substantially uniform, relatively small diameter. One end of the support shaft functions as a first rotation bearing member for the spool, and the other end of the shaft is integral with a narrow, relatively large diameter gear having on the opposed surface thereof a second cylindrical rotation bearing member having a larger diameter than the diameter of the ribbon support shaft and of the first rotation bearing portion thereof.
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