Detection system for offset printing machine, has optical fiber guiding light ray from lamp to inked zone, and spectrophotometer capturing light ray reflected by zone to provide zone characteristic representing signal to control unit

摘要

The system (7) has an optical fiber (10) guiding a light ray emitted by a lamp (11), until to the proximity of an inked zone (5) created on a substrate by a printer. An optical fiber (12) guides a light ray reflected by the zone until to a spectrophotometer (13). The spectrophotometer captures the reflected light ray and provides a measurement signal representing the characteristic such as color, of the zone, to a control unit (8). An independent claim is also included for an assembly of multiple machines, for printing on a substrate, comprising an assembly of detection systems.