Patent ID: 6523553
Filing Date: 2003-02-25
Classification: B08B,H01L,Y10S

Abstract:
An apparatus for removing material from the edge of a disk, comprising:a disk support adapted to support a vertically oriented disk; an etchant station positioned to supply etchant to the edge of a disk supported by the disk support; a rinsing station other than the etchant station that is positioned to rinse etchant supplied by the etchant station from the edge of a disk supported by the disk support, so as to avoid over etching of a major surface of the disk; and a mechanism for scanning the etchant station relative to the edge of a disk positioned on the disk support wherein the etchant station comprises an absorbent swab positioned to contact the edge of a disk supported by the disk support, and a supply line for supplying etchant to the absorbent swab.