The invention provides a coater, and methods of using the coater, for depositing thin films onto generally-opposed major surfaces of a sheet-like substrate. The coater has a substrate transport system adapted for supporting the substrate in a vertical-offset configuration wherein the substrate is not in a perfectly vertical position but rather is offset from vertical by an acute angle. Preferably, the transport system includes a side support for supporting a rear major surface of the substrate. Preferably, the coater includes at least one coating apparatus (e.g., which is adapted for delivering coating material) on each of two sides of the path of substrate travel.