| 摘要 |
<p>An ink ribbon cassette (1) includes a supply side ribbon spool (60), a take-up side ribbon spool (61), a cassette case (3,4) containing therein the supply side and take-up side ribbon spools and pivotably supporting at least the take-up side ribbon spool through a lever member (44) and having an opening through which an outside feed tooth (22) may mesh with the take-up side ribbon spool and further having a support portion (66) provided in the opening (65) for contacting the peripheral surface of the take-up side ribbon spool to prevent the take-up side ribbon spool from protruding outwardly, and biasing device (47) for imparting a rotational force to the lever member so that the take-up side ribbon spool is urged against the support portion.</p> |
