| 摘要 |
<p>A printing cartridge (10) is made of a pair of rigid half sections (11, 12) joined together along a plane parallel to the cartridge side walls. A spool (38) of printing tape (39) and spool (30) of printing ribbon (34) are rotatably supported in the cartridge (10) to allow said tape (39) and ribbon (34) to be withdrawn together and in mutually facing relationship through a guide member (14) integrally formed at the forward side of the cartridge (10). Three curved wall sections (40...42) formed on the inner surface of one cartridge section (11) retain the spool (38) of tape (39) in circular configuration and prevent the tape (39) from settling in the corners of the cartridge (10). A leaf spring (49) is disposed in the cartridge (10) in biassed engagement with the tape (39) to limit the movement of the tape (39) to the forward direction only. The tape (39) and ribbon (34) are guided through the guide member (14) by guide posts (50, 51) which also serve to maintain separation between the tape (39) and ribbon (34) during withdrawal from the cartridge (10). The guide member (14) furthermore has a notch (16) for engagement with an alignment tab (19) provided at a forward position of a cartridge carrier (18) into which the cartridge (10) is inserted for operation.</p> |
