Patent · US Active

Method of minimizing absorption of visible light in ink compositions comprising infrared-absorbing macrocyclic cyanine dyes

US7423145B2 · kind B2 · utility

4Cited by

14References

24Claims

0Family size

Assignee

Silverbrook Research Pty Ltd · AU

Inventors

Simone Charlotte Vonwiller · Forbes, AU
Scott Matthew Starling · Sydney, AU
Damon Donald Ridley · Sydney, AU
Lachlan Everett Hall · Sydney, AU
Simon Fielder · Sydney, AU
Graciel Gonzaga · Sydney, AU
Kia Silverbrook · Sydney, AU
Paul Lapstun · Sydney, AU

Key dates

Filing date	Aug 9, 2004
Grant date	Sep 9, 2008
Priority date	—
Expiry date	Aug 2, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D11/32
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention provides a method of minimizing absorption of visible light in an ink composition comprising an IR-absorbing metal cyanine dye, said method comprising preselecting said dye such that said metal has at least one axial ligand bound thereto, wherein said axial ligand comprises a moiety suitable for reducing intermolecular interactions between adjacent dye molecules. The method is especially suitable for use in connection with netpage and Hyperlabel systems.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.