Patent ID: 8888952

Claim:
An apparatus for wet treatment of a single plate-like article comprising: a spin chuck for holding and rotating a plate-like article about an axis of rotation, said spin chuck comprising holding elements for holding a plate-like article at an edge thereof when mounted on said spin chuck; a gas supply for providing a gas cushion between the plate-like article and the spin chuck and for directing gas towards the side of the plate-like article facing the spin chuck, said gas supply comprising (i) a gas nozzle rotating with the spin chuck, (ii) a rotating gas distribution chamber, which is part of the spin chuck, and which supplies gas to said gas nozzle, and (iii) a non-rotating gas feed supplying gas to said rotating gas distribution chamber, said non-rotating gas feed comprising at least one gas outlet positioned within said rotating gas distribution chamber; and a fluid supply positioned so as to direct fluid onto a side of a plate-like article that faces the spin chuck, through a non-rotatable fluid nozzle.