Patent ID: 6910240

Claim:
A substrate edge cleaning apparatus comprising: a substrate supporting device to substantially support a substrate in a selected plane the substrate having a circular shape and a circumferential edge, a front side and a back side, the edge having a bevel shaped cross-section; a first edge cleaning roller having an open curved scrubbing surface in contact with a first contact area consisting of at least part of a beveled first portion of the edge of the substrate, wherein the first contact area extends between an exclusion zone on the front side of the substrate approximately to a center line of the substrate but not on the back side of the substrate; and a second edge cleaning roller having an open curved scrubbing surface in contact with second contact area consisting of at least part of a beveled second portion the edge of the substrate, wherein the second contact area extends between an exclusion zone on the back side of the substrate approximately to a center line of the substrate but not on the front side of the substrate.