| 摘要 |
<p>A tube-type recording unit which possesses at its front end a small writing tube (32) with a writing wick (30) which moves axially therein. The writing wick (30), which has at its inner end a thickened spherical head (31), can be pressed in axially against the action of a return spring (41). The return spring (41) forms part of a spring element ring which is inserted between the ink supply line (11) and the writing wick (30) in the casing (20). The ring (40) and return spring (41) are dimensioned in such a way that the ink which emerges from the ink supply line (11) arrives without any restriction and in sufficient quantity at the writing wick (30).</p> |
