Patent number: 7971986
Abstract: An inkjet ink comprising an IR-absorbing dye of formula (A): wherein M is selected from the group consisting of: Si(A1)(A2), Ge(A1)(A2), Ga(A1), Mg, Al(A1), TiO, Ti(A1)(A2), ZrO, Zr(A1)(A2), VO, V(A1)(A2), Mn, Mn(A1), Fe, Fe(A1), Co, Ni, Cu, Zn, Sn, Sn(A1)(A2), Pb, Pb(A1)(A2), Pd and Pt; A1 and A2 are axial ligands, which may be the same or different, and are selected from the group consisting of: —OH, halogen and —OR3; R1 and R2 may be the same or different and are selected from the group consisting of: hydrogen, hydroxyl, C1-12 alkyl, C1-12 alkoxy, amino, C1-12 alkylamino, di(C1-12 alkyl)amino, halogen, cyano, thiol, C1-12 alkylthio, nitro, carboxy, C1-12 alkylcarbonyl, C1-12 alkoxycarbonyl, C1-12 alkylcarbonyloxy and C1-12 alkylcarbonylamino; R3 is a selected from the group consisting of: C1-12 alkyl, C5-12 aryl, C5-12 arylalkyl and Si(Rx)(Ry)(Rz); Rx, Ry and Rz may be the same or different and are selected from C1-12 alkyl, C5-12 aryl, C5-12 arylalkyl, C1-12 alkoxy, C5-12 aryloxy or C5-12 arylalkoxy;
Type:
Grant
Filed:
September 12, 2010
Date of Patent:
July 5, 2011
Assignee:
Silverbrook Research Pty Ltd
Inventors:
Paul Lapstun, Graciel Gonzaga, Kia Silverbrook, Damon Donald Ridley, Lachlan Everett Hall, Simon Fielder, Simone Charlotte Vonwiller, Scott Matthew Starling
Patent number: 7964719
Abstract: An inkjet ink for use in netpage, Hyperlabel and other applications. The ink includes an IR-absorbing dye of formula (I): wherein M is Ga(A1); A1 is an axial ligand selected from —OH, halogen, —OR3, —OC(O)R4, a hydrophilic ligand and/or a ligand suitable for reducing cofacial interactions; R1 and R2 may be the same or different and are selected from hydrogen or C1-12 alkoxy; R3 is selected from C1-12 alkyl, C5-12 aryl, C5-12 arylalkyl or Si(Rx)(Ry)(Rz); R4 is selected from C1-12 alkyl, C5-12 aryl or C5-12 arylalkyl; Rx, Ry and Rz may be the same or different and are selected from C1-12 alkyl, C5-12 aryl, C5-12 arylalkyl, C1-12 alkoxy, C5-12 aryloxy or C5-12 arylalkoxy; W is a hydrophilic group, each W group being independently selected from a substituent including a sulfonic acid group (including salts thereof), or a substituent comprising a sulfonamide group; n1 is 0, 1, 2 or 3; n2 is 0, 1, 2 or 3; n3 is 0, 1, 2 or 3; n4 is 0, 1, 2 or 3; and at least one of n1, n2, n3 or n4 is greater than 0.
Type:
Grant
Filed:
October 20, 2006
Date of Patent:
June 21, 2011
Assignee:
Silverbrook Research Pty Ltd
Inventors:
Simone Charlotte Vonwiller, Scott Matthew Starling, Damon Donald Ridley, Lachlan Everett Hall, Simon Fielder, Sutharsiny Indusegaram, Kia Silverbrook, Paul Lapstun