Why Scantron Forms Traditionally Are Printed in Blue Ink

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Click Here for Sources and to Learn Why You Used to Have to Use #2 Pencils With Scantron Forms

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Classically, scantron forms used blue ink for the lines and outlines to the circles because the original scantron systems couldn’t pick up the light in the blue spectrum.  Modern systems are simply designed to ignore whatever color the scantron form was printed in.

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