Patent ID: 7954450

Claim:
An optical fiber coating apparatus, comprising: a coating unit for allowing an optical fiber to pass through and forming a coating layer on the optical fiber; a base coupled with a lower portion of the coating unit to draw the optical fiber; a cover installed to an upper portion of the coating unit to isolate the coating unit from an external air, the cover having an optical fiber introduction hole; a gas supply line for supplying gas, having smaller kinetic viscosity than the air, into an inner space formed by the cover; and a coating agent discharge line for discharging out a coating agent remained in the inner space of the cover, wherein the inner space forms positive pressure circumstance by using the gas having smaller kinetic viscosity than the air, and wherein the coating agent discharge line is connected to the cover at a relatively lower position than the gas supply line so as not to disturb gas supply into the inner space of the cover.