Methods for preparing curable pigment inkjet ink sets

US8197584B2 · kind B2 · utility

Assignee

• AGFA GRAPHICS NV · BE

Inventors

• Roland Claes · Dendermonde, BE
• Geert Deroover · Lier, BE

Key dates

• Filing date: Oct 2, 2007
• Grant date: Jun 12, 2012
• Expiry date: Mar 12, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D11/40
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A curable pigment inkjet ink set includes a cyan inkjet ink, a yellow inkjet ink, and a magenta inkjet ink, wherein the yellow inkjet ink having ABS(Y)momo <5 and ABS(Y)400-500>60 includes one or more yellow pigments; the cyan inkjet ink includes one or more β-copper phthalocyanine pigments; and the magenta inkjet ink contains a mixed crystal including a first quinachdone and a second quinacridone in a ratio of the first quinacridone over the second quinacridone such that ABS(M)500-530>20 and ABS(M)500-600 >60. ABS(Y)500-530 represents the absorbance of the yellow inkjet ink between 500 and 530 nm; ABS(M)500-530 represents the absorbance of the magenta inkjet ink between 500 and 530 nm; ABS(Y)400-500 represents the absorbance ot the yellow inkjet ink between 400 and 500 nm; and ABS(M)500-600 represents the absorbance of the magenta inkjet ink between 500 and 600 nm.