Patent ID: 8257150

Claim:
A pad dresser and a pad dressing mechanism for roughening and processing a surface of a work, comprising: a dresser for dressing the surface of a pad which is fixed and supported on a platen, the dresser further comprising; an elastic member including a plurality of element wires having a tip part for cutting the surface of the polishing pad, the elastic member further comprising: a band so as to constrain a plurality of element wires by means of bundling the plurality of wires together; a plurality of bundles formed by bundling the plurality of element wires by said band; a support part fixed and supported said plurality of bundles so as to be nearly parallel with the polishing pad and opposed thereto; the tip part abutting the pad and cutting and roughening the pad surface; and an elastic deformation part for the tip part to follow and contact the surface of the pad with a constant pressure, the pressed elastic member cuts and roughens the surface of the polishing pad, and at the same time, dressing of the polishing pad is performed uniformly along the shape of the surface of the polishing pad.