公开(公告)号：US20250052618A1

公开(公告)日：2025-02-13

申请号：US18717576

申请日：2022-12-08

Applicant: Improve Process Analytics and Control GmbH

Inventor： Christian Sallinger

IPC: G01J3/50 ,  B41J2/21 ,  B41J29/00

Abstract: A method for spectrally measuring colour density in colour printing, in which a spectrally resolved reference reflectance is measured for an unprinted substrate with a spatially resolved spectral measuring system at a plurality of measuring points. At least one colour measuring field, preferably a plurality of colour measuring fields, is printed with a printing ink using a colour printer. The spectrally resolved reflectance for at least one colour measuring field is measured with the spatially resolved spectral measuring system at a plurality of measuring points and in which a colour density for the printing ink is calculated for each measuring point from the spectral distribution of the measured reflectance. The measured reference reflectance and a spectral weighting function representing the printing ink. The invention solves the technical problem of improving spectral colour density measurement in colour printing.