Letterpress printing utilizes a platen that is inked and pressed against a substrate for ink transfer. Successful letterpress printing of Teslin substrate synthetic paper requires attention to the impression pressure of the platen. Excessive pressure can cause embossing and distortion of Teslin substrate. Platen pressure should be adjusted to the minimum value that will transfer the ink from the type to the sheet. Contact your ink supplier to determine the best ink to use on Teslin substrate.