US 10,356,899 B2  52  51  thin film patterns in different portions on the second oppos› ing supporting side of the substrate,  each of these one or more electrically-conductive silver  metal-containing thin film patterns comprising:  a photosensitizer that can either reduce reducible silver  ion or oxidize the a-oxy carboxylate.  silver metal;  an a-oxy carboxylate;  a 5- or 6-membered N-heteroaromatic compound; and  17.  The product article of claim  14  that is provided as a 10  wound roll of a continuous material.  *  *  *  *  * 