👉 Postage fluid, also known as stamp fluid or ink, is a specialized liquid used in the printing process of stamps. It serves to ensure that the ink adheres properly to the stamp's surface, allowing for clear, vibrant, and long-lasting prints. The fluid helps to reduce friction between the stamp and the printing press, ensuring that the ink is evenly distributed and does not smudge or smear. Additionally, it aids in the removal of air bubbles trapped between the stamp and the press, resulting in a crisp, professional finish. The precise formulation of postage fluid varies between different postal services and types of stamps, but it generally contains pigments, binders, and other additives to achieve optimal performance.
