51动漫

Rocky Mountain Traders of London claims a magic mix for repairing damaged CDs
and DVDs (GB 2343288). Digital discs are pressed from polycarbonate, which
protects the 鈥減its鈥� that represent the data. Scratches in the polycarbonate
surface don鈥檛 damage the pits, but the scratch upsets the laser and makes discs
stick or skip. The patent claims a two-stage cure. First, the disc is rubbed
from the centre out with a mix of wax, turpentine and emulsifier. This fills the
scratch. Then, when the mixture has dried, a silicone sealing solution is rubbed
on. This forms a clear skin that stops the laser jumping.