), an angle bar is a metal bar that is used to turn paper between two components of the press. Aniline Oil-based solvent (quick drying) used in the preparation process of dyes and inks... emboss. Base The support onto which printing plates is fixed. Base Film The foundation material onto which the film positives are stripped for making printing plates. Reference..., photomechanical. Base Line This is a term used to describe the imaginary horizontal line upon which stand capitals, lower case letters, punctuation points etc. Basic Size This term...