linearization

linearization (In French linéarisation) procedure in the calibration of digital printing systems and inkjet digital proof printers. Here, with the help of a spectrodensitometer, e.g. Techkon Spectro- Dens/SpectroJet, a control strip provided for the linearization, e.g. ECI Gray Control Strip, is recorded on a printed sheet in order to be able to adapt the actual values to the target values. This option is also available on offset-print copies printedunder PSO/ISO-standardized conditions; there, the “GrayCon strips” are recorded for two purposes: 1. Quality monitoring of the printing press (with impakt medien iQIP and Techkon SpectroJet), 2. indirect RIP linearization through retroactive calculation of the print sheet measured values with respect to the imaging curve, which can then be corrected in the imagesetter RIP with a validation program, e.g. MMS/basICColor Calibri print control. So far it has been common practice to linearize the imagesetter RIP to a stepped wedge on the basis of a printing plate measurement, e.g. with the Techkon SpectroPlate image analyzer.