Apparatus and method for cleaning substrates/media disks

A method of cleaning a workpiece using a plurality of brush stations comprising:

• inserting a workpiece of a flat disc shape into a first brush station, said brush station comprising:
• at least one pair of roller brushes (15), said roller brushes (15) rotating in an opposite direction with respect to each other and said roller brushes (15) positioned close enough to each other so as to scrub the workpiece (5), and rotation of roller brushes (15) causing the workpiece (5) to be propelled in the direction of rotation;
• a pair of edgewheels (30, 31), said edgewheels (30, 31) able to move towards and away from each other, and said edgewheels (30, 31) located such that when the edgewheels (30, 31) are towards each other, the edgewheels (30, 31) hold the workpiece (5) in a location so that the workpiece (5) is scrubbed by the roller brushes (15), and at least one of said edgewheels (30, 31) is in rotation causing rotation of the workpiece (5) at a predetermined rate, and when the edgewheels (30, 31) are at a position further with respect to each other the edgewheels (30, 31) allow the workpiece (5) to move freely in between the edgewheels (30, 31);
• and moving the edgewheels (30, 31) away from each other so that the workpiece (5) is propelled by the rotation of the roller brushes (15) towards a second brush station;
• wherein, the axis of rotation of said roller brushes (15) is in a substantially vertical direction.