Patent ID: 6592936
Filing Date: 2003-07-15
Classification: B05B,B05C,G03F

Abstract:
A spin coating method in producing an optical disc, forming a thin film on a surface of an optical disc by dropping a coating solution having a coating solution composition of at least one solute and a solvent through discharge nozzle tip of the discharge nozzle onto the surface of the optical disc to be coated, mounted on a horizontal turn table and turning the optical disc, said method comprising the steps of:providing a container having an opening sized and adapted to receive the discharge nozzle tip and a liquid nozzle soaking solution contained in the container, the liquid nozzle soaking solution having a nozzle soaking solution composition of either the at least one solute and the solvent contained in the coating solution or the at least one solute and a different solvent having a similar chemical structure of the solvent contained in the coating solution, the at least one solute in the liquid nozzle soaking solution having a concentration of approximately 10% to 200% of the concentration of at least one solute in the coating solution; and soaking and holding the discharge nozzle tip in the liquid nozzle soaking solution.