| 摘要 |
<p>In a process for producing relief patterns to delimit keys or key fields in the form of tactile operating knobs on sheets, to improve the grip or similar, the pattern is produced by serigraphy. If necessary, overprinting may be carried out by multicolour printing. For preference, a UV serigraphic lacquer is used. In the case in which tactile operating knobs are produced in addition to top surface relief patterns, a single sheet can be printed on both sides.</p> |
