Patent ID: 8221832

Claim:
A method of making a heat treated coated article, the method comprising: providing a glass substrate; forming at least one layer comprising carbon on the glass substrate; forming a removable protective film on the glass substrate over at least the layer comprising carbon, the removable protective film comprising a first layer comprising zinc oxide and a second layer comprising zinc oxide, wherein the first layer comprising zinc oxide is mor e metallic than is the second layer comprising zinc oxide, and wherein the first layer comprising zinc oxide is between the layer comprising carbon and the second layer comprising zinc oxide; heat treating the glass substrate with the layer comprising carbon and the protective film thereon so that during the heat treating the protective film prevents significant burnoff of the layer comprising carbon, wherein the heat treating comprises heating the glass substrate to temperature(s) sufficient for thermal tempering, heat strengthening, and/or heat bending; and removing at least part of the protective film comprising zinc during and/or after said heat treating.