| 摘要 |
A centering aid (11) comprises two opposite ring sections (12') matching the second receiver (13). - DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for corresponding methods of manufacture of the disc and its use at a functional station. - Preferred features: The ring sections have a width of 0.3-1.0 mm, preferably about 0.5 mm. They form a positioning stop matching the smaller standard outer diameter externally, and the diameter of the central hole, internally. The ring sections have a height of 0.3-1 mm, preferably about 0.8 mm. The outer diameter is 80 mm, corresponding with a CD mini disc. The top is visibly printed; from the underside, digital date can be read in standard manner. Further developments are indicated, including e.g. Smart card implementation and use of CD-ROM, CD-R, CD-RW or DVD technology. Extremely wide ranging ideas are provided including e.g. Incorporation of batteries and a biochemical chip. |
