The primary causes of ink bridging are centered around an excessive Ink Film Thickness being delivered to the plate, often due to an anilox roller with a Cell Volume that is too high for the specific line screen being used. When the volume exceeds the capacity of the dots to hold the ink, the fluid overflows into the negative spaces, creating bridges between independent dots. This results in a significant increase in TVI, making the final print appear much darker and muddier than the original digital file intended.

Beyond volume issues, improper ink viscosity and excessive impression pressure also play major roles. If the ink is too thin, it flows too easily between dots; if the pressure is too high, it physically pushes the ink into the gaps. To prevent these issues, it is essential to calibrate the anilox-to-plate ratio and ensure that the doctor blade is metering the ink surface with absolute precision. High-quality results depend on maintaining the separation between halftone dots to preserve image clarity and brand color standards.