Patents by Inventor Roland Claes
Roland Claes 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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Patent number: 8083338Abstract: A radiation-curable ink-jet black ink is provided which includes a black pigment, at least one colour pigment and at least one radiation-curable compound. An ink-jet ink set which includes the radiation-curable ink-jet black ink and a process for printing with such an ink-jet ink set are also disclosed. Image quality defects of noticeable chromatic variation in adjacent print patches of bi-directional printing are eliminated and reduced ink consumption is observed.Type: GrantFiled: May 5, 2005Date of Patent: December 27, 2011Assignee: Agfa Graphics N.V.Inventors: Roland Claes, Geert Deroover, Frank De Voeght
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Patent number: 8063115Abstract: A radiation curable composition comprising a curable compound, a photo-initiator and a co-initiator, wherein said co-initiator has a structure according to Formula I A-L-B??Formula I wherein A represents a structural moiety comprising an aromatic tertiary amine; B represents a structural moiety comprising at least one aliphatic tertiary amine; L represents a divalent linking group positioning the nitrogen atom of the aromatic amine of the structural moiety A and the nitrogen of at least one aliphatic amine of the structural moiety B in a 1-3 to 1-23 position; with the proviso that at least one aromatic and at least one aliphatic amine each have at least one alfa-hydrogen.Type: GrantFiled: November 19, 2007Date of Patent: November 22, 2011Assignee: Agfa Graphics NVInventors: Johan Loccufier, Roland Claes
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Publication number: 20110224324Abstract: A polymerizable photoinitiator is represented by Formula (I): wherein R1, R2 and R3 are independently selected from the group consisting of a hydrogen, an optionally substituted alkyl group and an optionally substituted aryl group or R1 and R3 represent the necessary atoms to form a five to eight membered ring; p, w, y and z are all integers with y representing a value 1 to 6; p representing the sum of w and z; p representing a value of 1 to 6; w=1 to (p?z) and z=0 to (p?w); L represents an optionally substituted (p+y)-valent linking group comprising 1 to 14 carbon atoms; A represents a radically polymerizable group selected from the group consisting of an acrylate group, a methacrylate group, a styrene group, an acryl amide group, a methacryl amide group, a maleate group, a fumarate group, an itaconate group, a vinyl ether group, an allyl ether group, an allyl ester group and a vinyl ester group; and X represents a photoinitiating moiety including at least one group capable of initiating a free radical pType: ApplicationFiled: December 1, 2009Publication date: September 15, 2011Applicant: AGFA GRAPHICS NVInventors: Johan Loccufier, Luc Van Maele, Jaymes Van Luppen, Roland Claes
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Publication number: 20110195198Abstract: A polymerizable Norrish Type II photoinitiators includes an optionally substituted benzophenone group or an optionally substituted thioxanthone group exhibiting improved compatibility with and solubility in radiation curable compositions. Radiation curable compositions and inkjet inks can contain these polymerizable Norrish Type II photoinitiators, exhibiting low extractable amounts of the photoinitiators and their residues after curing.Type: ApplicationFiled: September 4, 2009Publication date: August 11, 2011Applicant: AGFA GRAPHICS NVInventors: Johan Loccufier, Roland Claes, Jaymes Van Luppen
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Publication number: 20110159203Abstract: A polymerizable Norrish Type II photoinitiator according to Formula (I): . Radiation curable compositions and inkjet inks containing the polymerizable Norrish Type II photoinitiator of Formula (I) exhibit improved compatibility with and solubility in radiation curable compositions and inkjet inks, and exhibit low extractable amounts of the photoinitiator and its residues after curing.Type: ApplicationFiled: September 4, 2009Publication date: June 30, 2011Applicant: AGFA GRAPHICS NVInventors: Johan Loccufier, Roland Claes, Jaymes Van Luppen
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Publication number: 20110124768Abstract: A free radical curable liquid for inkjet printing of food packaging materials includes no initiator or otherwise one or more initiators selected from the group consisting of non-polymeric di- or multifunctional initiators, oligomeric initiators, polymeric initiators, and polymerizable initiators; wherein the polymerizable composition of the liquid consists essentially of: a) 25-100 wt % of one or more polymerizable compounds A having at least one acrylate group G1 and at least one second ethylenically unsaturated polymerizable functional group G2 different from the group G1; b) 0-55 wt % of one or more polymerizable compounds B selected from the group consisting of monofunctional acrylates and difunctional acrylates; and c) 0-55 wt % of one or more polymerizable compounds C selected from the group consisting of trifunctional acrylates, tetrafunctional acrylates, pentafunctional acrylates and hexafunctional acrylates.Type: ApplicationFiled: October 16, 2008Publication date: May 26, 2011Applicant: AGFA GRAPHICS NVInventors: Roland Claes, Johan Loccufier
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Publication number: 20100331478Abstract: An inkjet printing method includes the steps of a) providing a first radiation curable composition curable by free radical polymerization or cationic polymerization; b) applying a layer of the first radiation curable composition on a substrate; c) curing the layer; d) jetting on the cured layer a second composition curable by a different polymerization than the first composition but selected from the group consisting of free radical polymerization and cationic polymerization; and e) curing the jetted second composition by a different polymerization than the first composition. The first composition includes a cationically polymerizable compound having at least one (meth)acrylate group present in the first curable composition in an amount of at least 25 wt % based upon the total weight of the first curable composition. An inkjet ink set may be used in the above inkjet printing method.Type: ApplicationFiled: October 15, 2008Publication date: December 30, 2010Applicant: AGFA GRAPHICS NVInventor: Roland Claes
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Publication number: 20100313782Abstract: A free radical curable liquid for inkjet printing of food packaging materials includes no initiator or otherwise one or more initiators selected from the group consisting of non-polymeric di- or multifunctional initiators, oligomeric initiators, polymeric initiators, and polymerizable initiators; and a polymerizable composition of the liquid consists essentially of: a) 25-100 wt % of one or more polymerizable compounds A having at least one acrylate group G1 and at least one second ethylenically unsaturated polymerizable functional group G2 selected from the group consisting of a vinlyether group, an allylether group, and a allylester group; b) 0-55 wt % of one or more polymerizable compounds B selected from the group consisting of monofunctional acrylates and difunctional acrylates; and c) 0-55 wt % of one or more polymerizable compounds C selected from the group consisting of trifunctional acrylates, tetrafunctional acrylates, pentafunctional acrylates and hexafunctional acrylates.Type: ApplicationFiled: October 21, 2008Publication date: December 16, 2010Applicant: AGFA GRAPHICS NVInventors: Johan Loccufier, Roland Claes
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Publication number: 20100304149Abstract: A liquid radiation curable composition for inkjet printing includes a photoinitiating system consisting of one or more diffusion hindered photoinitiators selected from the group consisting of non-polymeric di- or multifunctional initiators, oligomeric or polymeric initiators, and polymerizable initiators, and one or more polymerizable co-initiators, wherein at least one of the polymerizable co-initiators is a polymerizable aromatic tertiary amine. Inkjet inks, an inkjet printing process, and packaging materials may include the liquid radiation curable composition.Type: ApplicationFiled: September 1, 2008Publication date: December 2, 2010Applicant: AGFA GRAPHICS NVInventors: Johan Loccufier, Roland Claes
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Patent number: 7795324Abstract: A novel polymeric initiator is disclosed comprising a dendritic polymer core with at least one initiating functional group as an end group. The dendritic polymeric core is preferably a hyperbranched polymer. The polymeric initiators are useful in radiation curable compositions such as varnishes, lacquers and printing inks and are especially useful in radiation curable inkjet inks.Type: GrantFiled: June 28, 2005Date of Patent: September 14, 2010Assignee: Agfa Graphics, N.V.Inventors: Johan Loccufier, Luc Vanmaele, Jaymes Van Luppen, Roland Claes, Yu Chen, Holger Frey
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Publication number: 20100048756Abstract: A radiation curable composition comprising a curable compound, a photo-initiator and a co-initiator, characterized in that said co-initiator is a oligomer or polymer having a repeating unit, said repeating unit comprising at least two tertiary amines, and said polymer being prepared by the polycondensation of di- or oligofunctional Michael acceptors with mono- or oligofunctional aliphatic primary amines or with di- or oligofunctional aliphatic secondary amines or with a mixture thereof.Type: ApplicationFiled: December 17, 2007Publication date: February 25, 2010Applicant: Agfa Graphics NVInventors: Johan Loccufier, Roland Claes
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Publication number: 20100041784Abstract: A radiation curable composition comprising a curable compound, a photo-initiator and a co-initiator characterized in that said co-initiator is represented by Formula (I), wherein MA is the residue of a mono- or oligofunctional Michael acceptor; L is a divalent linking group positioning the two tertiary amines in a 1-3 to 1-10 position, with the proviso that both amines are aliphatic; R1, R2 and R3 independently represent an optionally substituted alkyl group, an optionally substituted alkenyl group, an optionally substituted alkynyl group or an optionally substituted (hetero) alkaryl group; any two of R1, R2 and R3 may represent the necessary atoms to form a ring; any two of R1, R2 and R3 may represent the necessary atoms to form a ring with any of the atoms of the linking group L; n is an integer ranging from 1 to 6.Type: ApplicationFiled: December 17, 2007Publication date: February 18, 2010Applicant: Agfa Graphics NVInventors: Johan Loccufier, Roland Claes, Jaymes Van Luppen
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Publication number: 20100018438Abstract: A curable pigment inkjet ink set includes mprg a cyan inkjet ink, a yellow inkjet ink, and a magenta inkjet ink, wherein the yellow inkjet ink having ABS(Y)500-530<5 and ABS(Y)400-500>60 includes one or more yellow pigments; the cyan inkjet ink includes one or more ?-copper phthalocyanine pigments; and the magenta inkjet ink contains a mixed crystal including a first quinacridone and a second quinacridone in a ratio of the first quinacridone over the second quinacridone such that ABS(M)500-530>20 and ABS(M)500-600>60, ABS(Y)500-530 represents the absorbance of the yellow inkjet ink between 500 and 530 nm in a normalized absorption spectrum of the yellow ink; ABS(M)500-530 represents the absorbance of the magenta inkjet ink between 500 and 530 nm in a normalized absorption spectrum of the magenta ink; ABS(Y)400-500 represents the absorbance of the yellow inkjet ink between 400 and 500 nm in a normalized absorption spectrum of the yellow ink; and ABS(M)500-600 represents the absorbance of the magenType: ApplicationFiled: October 2, 2007Publication date: January 28, 2010Applicant: AGFA GRAPHICS NVInventors: Roland Claes, Geert Deroover
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Publication number: 20090326091Abstract: A radiation curable composition comprising a curable compound, a photo-initiator and a co-initiator, wherein said co-initiator has a structure according to Formula I A-L-B ??Formula I wherein A represents a structural moiety comprising an aromatic tertiary amine; B represents a structural moiety comprising at least one aliphatic tertiary amine; L represents a divalent linking group positioning the nitrogen atom of the aromatic amine of the structural moiety A and the nitrogen of at least one aliphatic amine of the structural moiety B in a 1-3 to 1-23 position; with the proviso that at least one aromatic and at least one aliphatic amine each have at least one alfa-hydrogen.Type: ApplicationFiled: November 19, 2007Publication date: December 31, 2009Applicant: Agfa Graphics NVInventors: Johan Loccufier, Roland Claes
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Patent number: 7520601Abstract: A printing process is disclosed for ink-jet printing a radiation curable image on a substrate (14). First a radiation curable liquid layer (12) is provided on at least a portion of the substrate (14). Radiation curable ink-jet ink droplets (10) are jetted into the radiation curable liquid layer (12) and the radiation curable liquid layer (12) containing the radiation curable ink-jet ink droplets (13) is then cured. The resolution of the radiation curable image is controlled by uniformly adjusting the thickness of the liquid layer (12) for the dotsize of the radiation curable ink-jet ink jetted onto the cured layer.Type: GrantFiled: October 18, 2005Date of Patent: April 21, 2009Assignee: Agfa Graphics, N.V.Inventors: Roland Claes, Robert Janssens
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Patent number: 7507773Abstract: A radiation curable composition comprising a novel photoreactive polymer is disclosed comprising a dendritic polymer core with at least one initiating functional group and at least one co-initiating functional group. Suitable radiation curable compositions are varnishes, lacquers, printing inks and radiation curable ink-jet inks. The dendritic polymeric core is preferably a hyperbranched polymer.Type: GrantFiled: June 29, 2005Date of Patent: March 24, 2009Assignee: AGFA Graphics N.V.Inventors: Johan Loccufier, Luc Vanmaele, Roland Claes, Jaymes Van Luppen, Yu Chen, Holger Frey
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Patent number: 7396861Abstract: Radiation curable compositions with a polymeric co-initiator are disclosed comprising a dendritic polymer core with at least one co-initiating functional group as an end group. The dendritic polymeric core is preferably a hyperbranched polymer. Industrial applications include varnishes, lacquers and printing inks. The polymeric co-initiator is especially useful in radiation curable inkjet ink.Type: GrantFiled: June 28, 2005Date of Patent: July 8, 2008Assignee: Agfa Graphics NVInventors: Johan Loccufier, Luc Vanmaele, Jaymes Van Luppen, Roland Claes
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Patent number: 7297460Abstract: A radiation curable ink composition comprising at least one initiator and at least one polyhedral oligomeric silsesquioxane (POSS) represented by the following empirical formula [R(SiO1.5)]n wherein n=4, 6, 8, 10, 12, 14, 16 and larger and each R is independently hydrogen, an inorganic group, an alkyl group, an alkylene group, an aryl group, an arylene group, or non-heterocyclic group-containing organo-functional derivatives of alkyl, alkylene, aryl or arylene groups; and a process for obtaining a colourless, monochrome or multicolour ink jet image comprising the steps of jetting one or more streams of ink droplets having the above-mentioned composition onto an ink-jet ink receiver material, and subjecting the obtained image to radiation curing.Type: GrantFiled: February 9, 2004Date of Patent: November 20, 2007Assignee: Agfa-GevaertInventors: Luc Vanmaele, Johan Loccufier, Roland Claes
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Patent number: 7278728Abstract: An ink-jet printing system including at least one ink-jet ink and a means for jetting an ink-jet ink onto a surface of a substantially non-absorbing ink-jet ink-receiver, characterized in that the ratio ? Sd/? Ld of the dispersive surface energy of said ink-receiver surface ? Sd over the dispersive surface energy of said ink-jet ink ? Ld is greater than 0.9. A process for ink-jet printing is also claimed. High areal throughput ink-jet printing (e.g. >100 m2/hour) with curable inks can be performed on different kinds of ink-receiver surfaces with a good image quality and colour density due to a controlled spreading of the ink-drops which can be directly cured.Type: GrantFiled: January 24, 2005Date of Patent: October 9, 2007Assignee: Agfa Graphics NVInventors: Guido Desie, Dirk Quintens, Bavo Muys, Patrick Mertens, Rene De Keyzer, Roland Claes
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Publication number: 20060092254Abstract: A printing process is disclosed for ink-jet printing a radiation curable image on a substrate (14). First a radiation curable liquid layer (12) is provided on at least a portion of the substrate (14). Radiation curable ink-jet ink droplets (10) are jetted into the radiation curable liquid layer (12) and the radiation curable liquid layer (12) containing the radiation curable ink-jet ink droplets (13) is then cured. The resolution of the radiation curable image is controlled by uniformly adjusting the thickness of the liquid layer (12) for the dotsize of the radiation curable ink-jet ink jetted onto the cured layer.Type: ApplicationFiled: October 18, 2005Publication date: May 4, 2006Applicant: AGFA-GEVAERTInventors: Roland Claes, Robert Janssens