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Edward G. Zwartz, Mississauga CA

Edward G. Zwartz, Mississauga CA

Patent application numberDescriptionPublished
20080197283EMULSION AGGREGATION TONER COMPOSITIONS AND DEVELOPERS - Disclosed herein are toner compositions and developers particularly suitable for use in xerographic devices having oil-less fuser systems. The disclosed toner composition is substantially free of crystalline resin.08-21-2008
20080199797CURABLE TONER COMPOSITIONS AND PROCESSES - An emulsion aggregation toner composition includes toner particles including: an unsaturated polymeric resin, selected from amorphous resins, crystalline resins, and mixtures thereof; an optional colorant; an optional wax; an optional coagulant; and a photo initiator capable of initiating crosslinking of said unsaturated polymeric resin.08-21-2008
20080220362TONER COMPOSITIONS HAVING IMPROVED FUSING PROPERTIES - Image recording device comprising a development system including toner particles comprising a gel latex, a high Tg latex, a wax, and a colorant, and a fuser member, such as a fluoropolymer coated fuser member, which produces images having improved document offset, vinyl offset and half-tone rub properties.09-11-2008
20080254381CHEMICAL TONER WITH COVALENTLY BONDED RELEASE AGENT - A chemical toner composition including a polymer polymerized from starting ingredients comprising a resin monomer and a release agent monomer.10-16-2008
20090061349LOW MELT TONERS AND PROCESSES THEREOF - A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the T03-05-2009
20090123864Ultra Low Melt Toners Comprised of Crystalline Resins - A toner having an amorphous resin, a crystalline resin, and a colorant, wherein the crystalline resin has a melting temperature of at least 70° C. and a recrystallization point of at least 47° C. exhibits improved document offset properties and improved heat cohesion. Annealing the toner further improves the heat cohesion and morphology of the toner.05-14-2009
20090142689POLYESTER-WAX BASED EMULSION AGGREGATION TONER COMPOSITIONS - Emulsion aggregation toners comprising a polyester-wax resin, wherein the polyester-wax resin includes a wax that is chemically incorporated into the main chain of the polyester resin.06-04-2009
20090214972TONER COMPOSITIONS - The present disclosure provides resins having fluorescent agents suitable for use in toner compositions that are capable of imparting fluorescent properties to images printed with the toners.08-27-2009
20090274499EXTENDED ZONE LOW TEMPERATURE NON-CONTACT HEATING FOR DISTORTION FREE FUSING OF IMAGES ON NON-POROUS MATERIAL - A system for heated gas fusing of toner on non-porous substrates is provided. The system uses (1) an extended fusing zone held at lower temperatures than needed for a roll nip or radiant fuser, and (2) a very low melt toner which can be fused at greatly reduced temperatures compared to conventional toners. In one form, the system is realized through (a) the use of heated gas as the low temperature extended zone fusing technology, and (b) the use of ultra-low melt (ULM) toner—which requires significantly reduced temperature compared to conventional toner. On non-porous packaging substrates the use of heated gas can limit the substrate temperature to 100° C.11-05-2009
20100015544TONER PROCESS - The present disclosure provides toners and processes for preparing toner particles possessing excellent charging characteristics. The process includes forming a dispersion including at least one organic and/or organometallic charge control agent, and then combining that dispersion with an emulsion suitable for use in forming toner particles.01-21-2010
20100021217COMPOSITION AND METHOD FOR WAX INTEGRATION ONTO FUSED PRINTS - A system and a method to protect an image on a substrate. The method includes forming an unfused toner image, partially fusing the unfused toner image at a first temperature by exposing the composition to radiation to prevent disruption of the image upon application of the wax-hybrid composition to form a partially fused toner image, cooling the partially fused toner image to a second temperature, providing a protective coating composition comprising a wax-hybrid, applying the protective coating composition over the partially fused toner image, permanently fixing the protective coating composition and partially fused toner image to form a final printed image.01-28-2010
20100021841LOW MELT TONERS AND PROCESSES THEREOF - A process for preparing toner particles and compositions adapted for use in preparing toners that comprise a blend of a first polyester resin with a second sharp melting polyester resin. The process includes forming an emulsion resin comprising a branched polyester resin, a crystalline polyester resin, a colorant, and optionally a wax. The resin mixture is aggregated using an aggregating agent, such as a zinc acetate solution, to form an aggregate mixture. The aggregate mixture is then coalesced at a temperature of from about 5 to about 20° C. above the T01-28-2010
20100055592TONER COMPOSITIONS - Toner particles are provided which may, in embodiments, include a core and a shell formed in situ. The resins utilized to form the core, the shell, or both, may be contacted with a water soluble initiator. The resin, in embodiments present in the shell, cross-links at a temperature near the temperature for coalescence, and may prevent a crystalline resin in the core from migrating to the toner surface.03-04-2010
20100055593TONER COMPOSITIONS - Toner particles are provided which may, in embodiments, include a core and a shell, one or both of which may include a polyester gel. The gel in the shell and/or core may prevent a crystalline resin in the core from migrating to the toner surface.03-04-2010
20100055598TONER COMPOSITIONS - Toner particles are provided which may, in embodiments, include a gel. In embodiments, the toner particles may have a core-shell configuration, with the gel in the core, the shell, or both. The gel may prevent a crystalline resin in the core of the toner particles from migrating to the toner surface.03-04-2010
20100075241TONERS WITH FLUORESCENCE AGENT AND TONER SETS INCLUDING THE TONERS - A toner set includes a plurality of toners, at least one toner but less than all toners of the toner set including binder, colorant and fluorescence agent and remaining additional toners including binder, colorant and free of fluorescence agent. At least a first toner grouping and a second toner grouping of the toner set form a combination, the first and second groupings of the combination exhibiting a substantially same color under ambient light conditions upon image formation. The first toner grouping and the second toner grouping of the combination contain a different amount of the fluorescence agent, wherein upon exposure to activating energy, the fluorescence agent fluoresces to cause a visible change in the color of a pattern formed in an image by the first toner grouping as compared to the second toner grouping.03-25-2010
20100099037TONER COMPOSITIONS AND PROCESSES - Environmentally friendly toner particles are provided which may, in embodiments, include a biodegradable semi-crystalline polyester resin and a biodegradable amorphous polyester resin.04-22-2010
20100136472TONER COMPOSITIONS - Toner particles are provided which may, in embodiments, include a high molecular weight branched or cross-linked polyester to decrease image gloss and to increase toner elasticity to prevent surface additives impaction. In embodiments, the toner particles may have a core-shell configuration, with the high molecular weight polyester in the core, the shell, or both.06-03-2010
20100159375TONERS CONTAINING POLYHEDRAL OLIGOMERIC SILSESQUIOXANES - Disclosed is a toner composition comprising toner particles which comprise a resin, an optional colorant, and a polyhedral oligomeric silsesquioxane compound.06-24-2010
20100186624METHOD OF MAKING A PIGMENTED PHASE CHANGE INK WITH DISPERSANT AND SYNERGIST - A method of making a phase change ink composition includes adding to a device with a stirring element at least one pigment, at least one dispersant and at least one synergist, processing the device at an elevated temperature and at a stirring rate to wet the at least one pigment to obtain an ink concentrate, and mixing the ink concentrate with an ink vehicle to obtain the ink composition. The device may be an extruder, an attritor or the like. The method allows for the reduction in the amount of dispersant to include in the ink.07-29-2010
20100196819METHOD FOR PAPER TREATMENT - Provided herein is a surface treatment method of oil contaminated xerographic prints which increases the adhesion of the print to levels close to the values corresponding to the original uncontaminated paper. Subjecting the contaminated surface to corona treatment alone and in combination with ultraviolet (UV) radiation and ozone can change the chemical structure of the surface of the paper in such a way that a highly polar surface is created as a consequence of this treatment, leading to enhanced adhesion properties of the xerographic print.08-05-2010
20100203439TONER COMPOSITIONS AND PROCESSES - Environmentally friendly toner particles are provided which may, in embodiments, include a bio-based amorphous polyester resin, optionally in combination with another amorphous resin and/or a crystalline resin. Toner particles may, in embodiments, have a core-shell configuration, with the shell formed of the bio-based amorphous polyester resin, the amorphous polyester resin, the crystalline polyester resin, or combinations thereof.08-12-2010
20100285401CURABLE TONER COMPOSITIONS AND PROCESSES - Processes for producing emulsion aggregation toners are provided. In embodiments, methods of the present disclosure may be utilized to produce toners suitable for low melt applications, including use in flexible packaging applications, where low pile height is desired for low cost and flexibility. In embodiments, the EA toners may be prepared by optimizing the particle size of the emulsion, the choice of and amount of aggregating agent utilized, and the solids content of the emulsion.11-11-2010
20100285403CURABLE TONER COMPOSITIONS AND PROCESSES - Processes for producing emulsion aggregation toners are provided. In embodiments, methods of the present disclosure may be utilized to produce toners suitable for low melt applications, including use in flexible packaging applications, where low pile height is desired for low cost and flexibility. In embodiments, the EA toners may be prepared by optimizing the particle size of the emulsion, the choice of and amount of aggregating agent utilized, and the solids content of the emulsion.11-11-2010
20110003243TONER COMPOSITIONS AND PROCESSES - Environmentally friendly toner particles are provided which may include a bio-based amorphous polyester resin, optionally in combination with another amorphous resin and/or a crystalline resin. Methods for providing these toners are also provided.01-06-2011
20110091803CURABLE TONER COMPOSITIONS AND PROCESSES - An emulsion aggregation toner composition includes toner particles including: an amorphous polyester resin; an optional crystalline resin; an optional colorant; an optional wax; an optional coagulant; and a polymeric or oligomeric hydroxy ketone photo initiator capable of initiating crosslinking of said polyester resin, wherein at least one of the amorphous polyester resin and the optional crystalline resin when present is unsaturated.04-21-2011
20110104607CHEMICAL TONER CONTAINING SUBLIMATION COLORANT FOR SECONDARY TRANSFER PROCESS - A chemical toner composition that includes at least one curable amorphous resin and at least one sublimation colorant.05-05-2011

Patent applications by Edward G. Zwartz, Mississauga CA