In flexographic printing, "misregister" describes a printing defect in which the separate colors of the print image are not correctly positioned, resulting in a blurred image because the dots did not print in the position they were intended to. For high-quality prints, all separately printed colors need to be aligned perfectly and today's multi-color and demanding print designs call for special attention to the topic of print register.
Misregistration by the tiniest fraction will result in waste, machine downtimes, re-prints of jobs, and delays in delivering the orders to the end customer. Here are some possible root causes:
- Printing plates: not mounted in register or have imprecise repeat length
- Machine settings: inaccurate web tension or temperature, impression, settings of a variety of rollers
- Condition of cylinders / plates / sleeves