Patent ID: 7828899

Claim:
An apparatus comprising: a chamber having an interior space configured to be maintained at a reduced pressure below atmospheric pressure, a vapor source for supplying said interior space of said chamber with a linearly extending stream of lubricant vapor, said vapor source has a linearly elongated shape extending along a first direction; a supporting member for supporting thereon a plurality of substrates with the surfaces thereof in facing relation to said vapor and source; and a conveyor for continuously moving said supporting member transversely past said linearly extending stream of lubricant vapor for depositing a uniform thickness film of lubricant on the surfaces of each of said plurality of substrates facing said vapor source, the conveyor configured to move along a second direction transverse to the first direction, wherein said vapor source comprises a thermal conductive material and includes a plurality of vapor orifices for supplying said linearly extending stream of lubricant vapor, the vapor orifices being arranged along the first direction, and a plurality of reservoirs for containing therein a liquid polymeric lubricant material, a top surface of each of said plurality of reservoirs includes a plurality of recesses each having a different diameter and a different depth configured to contain different volumes of the liquid polymeric lubricant material for regulating a molecular weight distribution of said stream for minimizing variation of the thickness of said films.