| 摘要 |
<p>A printing ribbon spool (10) for maintaining the print-out density or consistency of a printing ribbon (26) contains a sealed reservoir of ink. Within the reservoir there is provided a sealed container (40) of ink which communicates with the reservoir when it is desired to use the spool (10). Such communication can be achieved by a screw (50) piercing the sealed container. A wick (38) extends from the reservoir, past the sealed container (40), and through an opening (39) to a pad (28) in contact with the ribbon (26). Both the reservoir and container (40) are substantially sealed against the entry of air after the transfer of ink.</p> |
