Patents by Inventor Damon Donald Ridley
Damon Donald Ridley has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140094601Abstract: A sulfonated dye salt is disclosed. The sulfonated dye salt has a phosphazene cation of formula (C): wherein: R15, R16 and R17 are each independently selected from the group consisting of: C6-12 aryl, C5-12 heteroaryl; N(R20)(R21) and —N?P[N(R22)2]3; R18 and R19 are each independently selected from the group consisting of: H and C1-8 alkyl; or R18 and R19 are together: ?P(Ph)3; R20 and R21 are each independently selected from the group consisting of: H and C1-8 alkyl; or R20 and R21 are together joined to form a nitrogen-containing C5-10 heterocycloalkyl group; and R22 is C1-6 alkyl.Type: ApplicationFiled: October 1, 2012Publication date: April 3, 2014Inventors: Sutharsiny Indusegaram, Graciel Gonzaga, Simone Charlotte Vonwiller, Scott Matthew Starling, Lachlan Everett Hall, Damon Donald Ridley, Kia Silverbrook
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Patent number: 8622534Abstract: A method of minimizing kogation of a heater element in a thermal inkjet printhead. The method includes the steps of: (i) supplying an inkjet ink to a nozzle chamber of the printhead; and (ii) repeatedly actuating a heater element in the nozzle chamber so as to heat a portion of the ink to a temperature sufficient to form a bubble therein, thereby causing droplets of ink to be ejected from a nozzle opening associated with the nozzle chamber. The ink includes a styrene-acrylic copolymer having a glass transition temperature (Tg) in the range of 5 to 30° C. and acid value in the range of 100 180 mgKOH/g, said styrene-acrylic copolymer minimizes kogation of the heater element.Type: GrantFiled: February 8, 2010Date of Patent: January 7, 2014Assignee: Zamtec LtdInventors: Adrian Bisson, Roger Michael Davey, Alexander Grant, Damon Donald Ridley, Kia Silverbrook, Steven Carter
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Patent number: 8376541Abstract: A method of ejecting ink from a thermal inkjet printhead. The method includes the steps of: (i) supplying an ink to at least one nozzle chamber of the printhead; and (ii) actuating a heater element in the nozzle chamber and heating the ink to a temperature sufficient to form a bubble therein, thereby causing the ink to be ejected from a nozzle opening associated with the nozzle chamber. The ink is a solvent-based ink composition including: (a) 20-80 wt. % of a compound of formula (A); wherein: R1 is C1-6 alkyl; and each of R2, R3 and R4 is independently selected from H, C1-6 alkyl, halogen, OH, and C1-6 alkoxy; (b) 10-70 wt. % of a C1-6 alcohol; and (c) 0.01-25 wt. % of a colorant.Type: GrantFiled: September 11, 2009Date of Patent: February 19, 2013Assignee: Zamtec LtdInventors: Alexander Grant, Simon Fielder, Damon Donald Ridley, Kia Silverbrook
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Patent number: 8346024Abstract: A method of initiating a requested action in a computer system via a printed substrate. The substrate has human-readable information and machine-readable coded data printed thereon. The coded data is indicative of a substrate identity and of a plurality of locations on the substrate. The method comprises the steps of: (a) interacting with the substrate using an optically imaging sensing device; (b) imaging the coded data; (c) generating indicating data in the sensing device using the imaged coded data, the indicating data identifying the substrate identity and a position of the sensing device relative to the substrate; and communicating the indicating data to the computer system so that the computer system can initiate the requested action. The coded data is printed with an ink comprising an IR-absorbing naphthalocyanine dye.Type: GrantFiled: July 28, 2009Date of Patent: January 1, 2013Assignee: Silverbrook Research Pty LtdInventors: Simone Charlotte Vonwiller, Damon Donald Ridley, Sutharsiny Indusegaram, Scott Matthew Starling, Graciel Gonzaga, Kia Silverbrook
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Patent number: 8292995Abstract: A salt of a sulfonated dye modulates a stability of the dye, particularly its ozonefastness. The salt comprises an organic cation selected from the group consisting of: a first organic cation having a positive charge delocalized between a nitrogen atom and at least one other heteroatom; a second organic cation having a positive charge delocalized between a nitrogen atom and at least two other atoms; and a third organic cation of formula (A): wherein: Rp, Rq and Rr are each independently selected from a C1-6 alkyl group; s is 0, 1, 2 or 3; and Ar is a C6-12 aryl group or C3-12 heteroaryl group.Type: GrantFiled: February 10, 2009Date of Patent: October 23, 2012Assignee: Silverbrook Research Pty LtdInventors: Sutharsiny Indusegaram, Graciel Gonzaga, Simone Charlotte Vonwiller, Scott Matthew Starling, Lachlan Everett Hall, Damon Donald Ridley, Kia Silverbrook
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Patent number: 8282722Abstract: A sulfonated dye salt of formula (II): wherein M is Ga(A1); A1 is an axial ligand selected from the group consisting of: —OH and halogen; and Z1+, Z2+, Z3+ and Z4+ are independently selected from the group consisting of: H and an ammonium cation including 3 or more hydroxyl groups. At least one of Z1+, Z2+, Z3+ and Z4+ is the ammonium cation. Such salts exhibit reduced kogation in thermal bubble-forming inkjet printheads.Type: GrantFiled: September 5, 2011Date of Patent: October 9, 2012Assignee: Silverbrook Research Pty LtdInventors: Simone Charlotte Vonwiller, Sutharsiny Indusegaram, Graciel Gonzaga, Damon Donald Ridley, Kia Silverbrook
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Patent number: 8119820Abstract: A method of preparing a sultine from a dihalogeno compound. The method comprises the steps of reacting the dihalogeno compound with a hydroxymethanesulfinate salt in a DMSO solvent so as to prepare the sultine.Type: GrantFiled: January 27, 2011Date of Patent: February 21, 2012Assignee: Silverbrook Research Pty LtdInventors: Sutharsiny Indusegaram, Simone Charlotte Vonwiller, Damon Donald Ridley
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Patent number: 8110032Abstract: A solvent-based ink composition for a thermal inkjet printhead. The ink composition comprises: (a) 20-80 wt. % of a compound of formula (C); wherein: R7 is a C2-12 alkyl group interrupted with 0, 1, 2 or 3 oxygen atoms; (b) 10-70 wt. % of a C1-6 alcohol; and (c) 0.01-25 wt. % of a colorant.Type: GrantFiled: September 11, 2009Date of Patent: February 7, 2012Assignee: Silverbrook Research Pty LtdInventors: Alexander Grant, Simon Fielder, Damon Donald Ridley, Kia Silverbrook
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Patent number: 8110030Abstract: A method of formulating an aqueous ink having minimal visible coloration. The method includes the steps of: providing an aqueous ink formulation containing a sulfonated water-soluble IR-absorbing naphthalocyanine dye having a central metal atom moiety; and adjusting a pH of the formulation to a pH value in the range of 4 to 6.5 so as to minimize visible coloration of the formulation.Type: GrantFiled: May 30, 2011Date of Patent: February 7, 2012Assignee: Silverbrook Research Pty LtdInventors: Sutharsiny Indusegaram, Graciel Gonzaga, Simone Charlotte Vonwiller, Scott Matthew Starling, Lachlan Everett Hall, Damon Donald Ridley, Kia Silverbrook
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Patent number: 8101012Abstract: A solvent-based ink composition for a thermal inkjet printhead. The ink composition comprises: (a) 20-80 wt. % of a compound of formula (A); wherein: R1 is C1-6 alkyl; and each of R2, R3 and R4 is independently selected from H, C1-6 alkyl, halogen, OH, and C1-6 alkoxy; (b) 10-70 wt. % of a C1-6 alcohol; and (c) 0.01-25 wt. % of a colorant.Type: GrantFiled: September 11, 2009Date of Patent: January 24, 2012Assignee: Silverbrook Research Pty LtdInventors: Alexander Grant, Simon Fielder, Damon Donald Ridley, Kia Silverbrook
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Publication number: 20110316936Abstract: A sulfonated dye salt of formula (II): wherein M is Ga(A1); A1 is an axial ligand selected from the group consisting of: —OH and halogen; and Z1+, Z2+, Z3+ and Z4+ are independently selected from the group consisting of: H and an ammonium cation including 3 or more hydroxyl groups. At least one of Z1+, Z2+, Z3+ and Z4+ is the ammonium cation. Such salts exhibit reduced kogation in thermal bubble-forming inkjet printheads.Type: ApplicationFiled: September 5, 2011Publication date: December 29, 2011Inventors: Simone Charlotte Vonwiller, Sutharsiny Indusegaram, Graciel Gonzaga, Damon Donald Ridley, Kia Silverbrook
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Patent number: 8079769Abstract: An ink cartridge for an inkjet printer contains an aqueous ink formulation. The ink formulation comprising an IR-absorbing naphthalocyanine dye of formula (II): or a salt form thereof, wherein: M is Ga(A1); A1 is an axial ligand selected from —OH, halogen, —OR3, —OC(O)R4 or —O(CH2CH2O)eRe wherein e is an integer from 2 to 10 and Re is H, C1-8 alkyl or C(O)C1-8 alkyl; 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; and 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. The ink formulation has a characteristic pH in the range of 4 to 6.5.Type: GrantFiled: February 21, 2010Date of Patent: December 20, 2011Assignee: Silverbrook Research Pty LtdInventors: Sutharsiny Indusegaram, Graciel Gonzaga, Simone Charlotte Vonwiller, Scott Matthew Starling, Lachlan Everett Hall, Damon Donald Ridley, Kia Silverbrook
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Patent number: 8038737Abstract: A method of modulating a stability of a sulfonated dye, particularly its ozonefastness is provided. The method comprises providing a salt of the dye, wherein the salt comprises at least one organic cation selected from the group consisting of: a first organic cation having a positive charge delocalized between a nitrogen atom and at least one other heteroatom; a second organic cation having a positive charge delocalized between a nitrogen atom and at least two other atoms; and a third organic cation of formula (A): wherein: Rp, Rq and Rr are each independently selected from a C1-6 alkyl group; s is 0, 1, 2 or 3; and Ar is a C6-12 aryl group or C3-12 heteroaryl group.Type: GrantFiled: February 10, 2009Date of Patent: October 18, 2011Assignee: Silverbrook Research Pty LtdInventors: Sutharsiny Indusegaram, Graciel Gonzaga, Simone Charlotte Vonwiller, Scott Matthew Starling, Lachlan Everett Hall, Damon Donald Ridley, Kia Silverbrook
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Patent number: 8029611Abstract: A salt of a sulfonated dye comprising an ammonium cation as a counterion. The ammonium cation comprises at least 3 hydroxyl groups. The salt is useful in reducing kogation in thermal inkjet printheads. One example of these salts is the compound of formula (II): wherein M is Ga(OH); and each of Z1+, Z2+, Z3+ and Z4+ is protonated 2,2-bis(hydroxymethyl)-2,2?,2?-nitrilotriethanol.Type: GrantFiled: May 14, 2009Date of Patent: October 4, 2011Assignee: Silverbrook Research Pty LtdInventors: Simone Charlotte Vonwiller, Sutharsiny Indusegaram, Graciel Gonzaga, Damon Donald Ridley, Kia Silverbrook
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Publication number: 20110226156Abstract: A method of formulating an aqueous ink having minimal visible coloration. The method includes the steps of: providing an aqueous ink formulation containing a sulfonated water-soluble IR-absorbing naphthalocyanine dye having a central metal atom moiety; and adjusting a pH of the formulation to a pH value in the range of 4 to 6.5 so as to minimize visible coloration of the formulation.Type: ApplicationFiled: May 30, 2011Publication date: September 22, 2011Inventors: Sutharsiny Indusegaram, Graciel Gonzaga, Simone Charlotte Vonwiller, Scott Matthew Starling, Lachlan Everett Hall, Damon Donald Ridley, Kia Silverbrook
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Patent number: 8002192Abstract: A printing module for an analog printer. The printing module includes an ink supply, a printing plate and an ink applicator for disposing ink from the ink supply onto the plate. The ink contains an IR-absorbing phthalocyanine dye formulated in a solvent-based or oil-based ink vehicle. The phthalocyanine dye has sulfonate groups, wherein a counterion of each sulfonate group is a phosphonium cation. Each phosphonium cation is of formula: P+(Rm)(Rn)(Rs)(Rt); each of Rm, Rn, Rs and Rt is independently selected from the group consisting of: C1-30 alkyl, C5-12 aryl and C5-30 arylalkyl; and at least one of Rm, Rn, Rs and Rt includes more than 4 carbon atoms.Type: GrantFiled: November 8, 2010Date of Patent: August 23, 2011Assignee: Silverbrook Research Pty LtdInventors: Scott Matthew Starling, Simone Charlotte Vonwiller, Damon Donald Ridley, Kia Silverbrook
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Publication number: 20110193911Abstract: A method of minimizing kogation of a heater element in a thermal inkjet printhead. The method comprises the steps of: (i) supplying an inkjet ink to a nozzle chamber of the printhead; and (ii) repeatedly actuating a heater element in the nozzle chamber so as to heat a portion of the ink to a temperature sufficient to form a bubble therein, thereby causing droplets of ink to be ejected from a nozzle opening associated with the nozzle chamber. The ink comprises an acrylic polymer having a glass transition temperature (Tg) of less than about 100° C., which minimizes kogation of the heater element.Type: ApplicationFiled: February 8, 2010Publication date: August 11, 2011Inventors: Adrian Bisson, Roger Michael Davey, Alexander Grant, Damon Donald Ridley, Kia Silverbrook, Steven Carter
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Patent number: 7971986Abstract: 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: GrantFiled: September 12, 2010Date of Patent: July 5, 2011Assignee: Silverbrook Research Pty LtdInventors: Paul Lapstun, Graciel Gonzaga, Kia Silverbrook, Damon Donald Ridley, Lachlan Everett Hall, Simon Fielder, Simone Charlotte Vonwiller, Scott Matthew Starling
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Patent number: 7972427Abstract: An aqueous formulation comprises a sulfonated water-soluble IR-absorbing naphthalocyanine dye having a central metal atom moiety. A pH of the formulation is in the range of 4 to 6.5, which minimizes visibility of the formulation.Type: GrantFiled: October 13, 2010Date of Patent: July 5, 2011Assignee: Silverbrook Research Pty LtdInventors: Sutharsiny Indusegaram, Graciel Gonzaga, Simone Charlotte Vonwiller, Scott Matthew Starling, Lachlan Everett Hall, Damon Donald Ridley, Kia Silverbrook
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Patent number: 7964719Abstract: 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: GrantFiled: October 20, 2006Date of Patent: June 21, 2011Assignee: Silverbrook Research Pty LtdInventors: Simone Charlotte Vonwiller, Scott Matthew Starling, Damon Donald Ridley, Lachlan Everett Hall, Simon Fielder, Sutharsiny Indusegaram, Kia Silverbrook, Paul Lapstun