| 摘要 |
In the case of the process according to the invention, when cutting a spiral track with a flat base into a cutting medium (9), the radial advancement of the cutting stylus (10) is set in dependence on the base width of the cutting stylus (10) in such a way that between adjacent track sections there just remains a triangular separating ridge (13, 20), which after the negative copying over remains as a channel-like depression (6, 7) between adjacent track sections. <IMAGE>
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