| 摘要 |
The method of finishing the surface of a disc, such as a disc whereon information is magnetically recorded for use in computers and the like. It involves urging against one side of a rotating disc, a polishing pad having a polishing compound or medium thereon, and simultaneously urging a non-polishing pad against the opposite side of such disc in alignment with the polishing pad. To simultaneously polish the opposite side surfaces of the disc, a second pair of pads (one polishing and one non-polishing) is equiangularly spaced on the disc in relation to the first pair of pads, but the pads of the second pair of pads are reversed so as to cause the finishing process to occur on the disc side not being polished by the first pair of pads. Any desired even numbered pairs of pads may be employed. The polishing and non-polishing pads are caused to rotate relative to and against the respective side of the disc as the disc itself is caused to rotate about its axis.
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