| 摘要 |
<p>A print head in which print force can be prevented from being reduced by making the distance between the tip of a print wire and a print medium adjustable. A printer equipped with such print head is also provided. When the tip of a wire (11) abrades through use of a print head (1) and print force is reduced due to increase in distance between the print surface of a print sheet (20) and the tip of the wire (11), a pull-out spacer (14) is pulled out.Consequently, the distance (L2) between the tip of a tracing roller (12) and the reference surface (16a) of a frame is shortened to a distance (L1-2t), and the distance between the print surface of the print sheet (20) and the reference surface (16a) of the frame, which is equal to the distance (L2), is also shortened. Furthermore, the distance between the tip of the projecting wire (11) and the print surface of the print sheet (20) is shortened to a distance (d1-2t), and the tip of the wire (11) approaches the print surface of the print sheet (20) thus the distance becomes the distance before the wire (11) abrades.</p> |
