Hard copy re-emission color measurement system

摘要

Hard copy re-emission color measurement system, comprising a light arrangement for emitting light onto a hard copy, a light detector arranged to detect light re-emitted by the hard copy, and a control circuit configured to process the detected re-emitted light. The light arrangement is arranged to separately and simultaneously emit a first light having wavelengths longer than an ultraviolet wavelength and a second light having wavelengths in the ultraviolet range. The light arrangement is provided with a light guide arranged to guide the first and second light on an at least partly overlapping region on a hard copy.