| 摘要 |
<p>The printing head comprises a number of needles of equal length actuated by solenoids and one above the other, guided in a trough-shaped channel. The head comprises two mirror-image parts (1,2) assembled together, each with solenoids (4) equally spaced along a semicircle and actuating the needles (10). The latter work in guides, so as to print two lines. The trough-shaped channels in the head parts can be one above the other, so as to together form a closed channel. Shims can be inserted between the head parts so as to vary the distance between the lines.</p> |
