Even for small mass-produced parts, it is worth it to use industrial image-processing systems to guarantee first-class quality. At NP Plastics, small plastic rollers for document binders are checked 600 times per minute in three dimensions – with digital cameras from Allied Vision Technologies. To NP Plastics, an experienced Dutch manufacturer of injectionmolded plastic parts, the perfect quality of the small white rollers was worth the investment in an image processing system. The challenge was to check the geometry of the approx. 5-mm-rings for defects and sharp edges (or burrs) at a rate of at least 600 parts per minute. To do so, the company turned to Radine BV. With the support of Data Vision, Allied Vision Technologies’ sales partner in the Benelux, Radine developed a custom solution using digital cameras to optically check the rollers for quality.