Black ink compositons for inkjet printing

摘要

The present invention provides black ink compositions for use in inkjet printing, which exhibit improved neutral color, light fastness, and gray scale properties. The black ink compositions generally include a mixture of two or more black dyes in balanced concentrations to obtain black ink having the improved properties while retaining good print-ability in an inkjet pen. In one aspect, a black ink composition may include a mixture of pacified Reactive Black 31 and Direct Black 168.