The first step is to calculate the distortion compensation that is necessary to ensure that the final image is printed without being stretched vertically or horizontally. It is important that distortion calculations are precise, because even a small error can create problems in the final printed image. In most cases, flexographers prefer that graphic designers not compensate for distortion in their artwork files. Instead, the distortion compensation is typically performed by the flexographer onsite, at the printing or tradeshop facility.
Most flexographers use a standard formula to determine distortion compensation percentages. This formula can be expressed as follows:
Distortion compensation % = (K x 100%)/R
where K = constant, and R = repeat length
See Also