Patent ID: 6402588
Filing Date: 2002-06-11
Classification: B24B

Abstract:
A polishing apparatus for polishing an object, comprising:a grinding member having an abrasive surface to polish a surface of the object; an object holder to hold the object having the surface to be polished; a dresser disk holder to hold a dresser disk having a dressing surface for dressing said abrasive surface of said grinding member, said grinding member being positionable such that said abrasive surface straddles the dressing surface oft he dresser disk and the surface of the object so as to define an exposed portion of said abrasive surface that is not covered by any of the object and the dresser disk; a grinding member monitoring device to detect a property of a dressed area of said abrasive surface at the exposed portion; and a control section to control a dressing parameter in response to an output signal from said grinding member monitoring device that corresponds to the property detected by said grinding member monitoring device.