| 摘要 |
The invention relates to a pen comprising a cartridge (10), a retaining sleeve (12) for housing the cartridge at least partially, a locking device (14) that can be actuated by a twisting motion for interlocking the cartridge (10) and the retaining sleeve (12) and a cap (16) for protecting the cartridge. According to the invention, said cap (16) can be displaced axially in relation to the locking device from a first operating position, in which it can be rotated relative to the locking device, into a second operating position, in which it is rotatably coupled to the locking device. The invention is characterised in that the cartridge (10) can be displaced axially in relation to the locking device (14), at least by a length that is equal to the distance between the first and the second operating position of the cap.
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