The Anilox roller is essential in flexographic printing. It is made of metal (steel or aluminum) and is coated with a ceramic layer engraved with small cells. The cells are of specific sizes and shapes, designed to collect ink in a controlled manner and transfer the right amount of ink to the printing cylinder. The cells can have different sizes and depths, affecting the desired final result. There is a wide variety of types of Anilox rollers, allowing for greater versatility in the printing process.

The Anilox roller regulates the amount of ink transferred to the substrate. The density, depth, and volume of the cells directly affect ink transfer: denser and deeper cells transfer more ink, while less dense and shallow cells transfer less. Choosing the right Anilox roller is essential for high-quality printing. It is important to consider the type of substrate, ink, and desired resolution. Inappropriate rollers can lead to smudging, poor definition, or issues with ink quantity. Regular cleaning and inspections maintain cell efficiency and prevent wear or damage.