Verfahren zur Bestimmung eines Farbtonbereichs eines Druckers

Details

Veröffentlichungs-Nr.

EP4606570

Aktenzeichen

EP24159427

Anmeldetag

23. Februar 2024

Veröffentlichung

27. August 2025

Rechtsraum

EP

IPC

B33Y50/00B29C64/386H04N1/60

Abstract

Method for determining a colour gamut of a printing system. The method comprises the steps of printing samples of an object on a substrate. The samples vary with respect to a thickness of the samples and ink ratios of the ejected inks. For each printed sample a reflectance is measured by means of a spectrophotometer. The measured reflectances are fit with a formula derived from the Kubelka-Munk theory comprising derivations of an absorption coefficient and a scattering coefficient of the ejected inks and transmission and/or reflection coefficients at interfaces between ink and air and vice versa, and between ink and substrate. A full colour gamut of the printer is determined by using the Kubelka-Munk theory by means of the derived coefficients and the derived coefficients are stored in a print controller of the printing system.

Anmelder

Firma

Canon Production Printing Holding B.V.

Land

🇳🇱 Niederlande

Fachgebiete