| 摘要 |
<p>A process for making an optical write-and-read recording disk medium by applying to a substantially flat disk substrate (30) a thin uniform layer of fluid composition between radially inner and outer boundary control rings (34 and 36) that repel the composition. A circular bead (33) of the composition is injected into a gap established between a surface of the disk substrate (30) and an opposing surface (28) of a master mold (26). The bead (33) is applied at a radius such that the surface area of the disk substrate (30) between the inner ring (34) and the radius is approximately equal to the surface area of the disk substrate (30) between the radius and the outer ring (36). The gap between the substrate (30) and the mold (26) is then closed such that the bead of composition spreads radially inwardly and outwardly from the radius to the inner and outer rings (34 and 36). The rings retard, and thereby equalize, non-uniform fronts of the advancing composition. Both rings (34 and 36) may be of silicone material screen-printed on the opposing surface (28) of the mold (26).</p> |
