Quality Vision

The upshot? Even the most sophisticated vision systems have to be "taught" to deal with the capabilities of the printing process—registration, movement, etc.—so that it learns not to stop for every anomaly it sees. Prinect Inspection Control, for example, permits the operator to record and recall acceptable defects so that the system doesn't stop the process. "That way you're not stopping for every single variation that can occur in printing," Mann says. "If you did, you clearly wouldn't get much work. We make determinations like these on every job we run, and there's hardly a job on which the system doesn't pick up something that is within acceptable standards for the printing industry, or on a part of the sheet where copy isn't present and can't affect the accuracy of the job."