Patent ID: 6116997
Filing Date: 2000-09-12
Classification: B24B,B24D

Abstract:
A single side polishing apparatus comprising:a freely driven and rotating surface plate;a polishing pad which is held on said surface plate, wherein said polishing pad has a working area;at least one pressurizing means for pressing a disk-shaped work against said polishing pad and simultaneously pressingat least one correction roller against said polishing pad wherein said correction roller operatively connected to said pressurizing means and which extends along a radius of said surface plate and has a length substantially equivalent to the width of said working area of said polishing pad; anda contact pressure setting means operatively connected to said pressurizing means;wherein said correction roller is pressed against said polishing pad by said pressurizing means at a contact pressure determined by said contact pressure setting means and rotated in contact with said polishing pad to rectify the surface geometry of said polishing pad simultaneously throughout the polishing of a workpiece.