Apparatus and methods utilize a replica circuit to generate a voltage for programming of a memory cell, such as a memory cell of a phase-change memory. The invention relates to a reflector substrate comprising a moisture resistant layer metalized with a reflective layer, wherein the moisture resistant layer comprising the moisture resistant composition. Hence, the press fabric provides a solution to the problem of non-uniformity in the seam area, which often results in sheet marking. Suitable surfactants include cocamidopropyl betaine compounds and polyoxypropylene-polyoxyethylene copolymers.