In offset printing, what does substrate refer to?

In offset printing, what does substrate refer to?

• A. The chemical composition of the ink.
• B. The distance between print cylinders.
• C. The material on which printing occurs.
• D. The color management profile.

Answer: (C)

In offset printing, substrate means the material on which printing occurs, such as paper, cardboard, plastic, or metal. This surface is what the ink is deposited onto, so its properties directly affect how the ink behaves: how well it adheres, how it dries, and how the final image looks. The substrate’s surface energy, texture, porosity, and coating change ink spread (dot gain), sharpness, and color reproduction. Different substrates require different inks and drying conditions, and they influence things like ink film strength and gloss. The other factors listed aren’t about what the print is made on: the chemical composition of the ink is about ink formulation, the distance between print cylinders is a press-geometry detail, and the color management profile handles color accuracy rather than the physical printing surface.

In offset printing, substrate means the material on which printing occurs, such as paper, cardboard, plastic, or metal. This surface is what the ink is deposited onto, so its properties directly affect how the ink behaves: how well it adheres, how it dries, and how the final image looks. The substrate’s surface energy, texture, porosity, and coating change ink spread (dot gain), sharpness, and color reproduction. Different substrates require different inks and drying conditions, and they influence things like ink film strength and gloss. The other factors listed aren’t about what the print is made on: the chemical composition of the ink is about ink formulation, the distance between print cylinders is a press-geometry detail, and the color management profile handles color accuracy rather than the physical printing surface.