Back to results
US 4,892,584 AGranted
Water soluble infrared absorbing dyes and ink-jet inks containing them
AssigneeEastman Kodak Company
InventorDerek D. Chapman
Life of this patent
Estimating the term…
Abstract
Novel metallized azo dyes are useful as infrared absorptive dyes in inks for ink-jet printing.
Claims10
A water-soluble, ferrous-chelate, infrared absorptive dye having the structure:
- ##STR14## wherein n is 1 to 3;
- Z represents the atoms to complete a nitrogen containing, aromatic heterocyclic group, and
- R represents at least one water solubilizing group.
A ferrous complex of a dye selected from those having the following structures:
- ______________________________________ ##STR15## ______________________________________ ##STR16## ##STR17## ##STR18## ##STR19## ##STR20## ##STR21## ______________________________________
Dependencies are inferred from the claim text.