Patent application number | Description | Published |
20080197283 | EMULSION 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 |
20090047593 | TONER COMPOSITIONS AND PROCESSES - An emulsion aggregation toner including a core and a shell wherein the core includes an amorphous polyester, a wax, a crystalline polyester and an optional colorant and wherein the shell includes an amorphous polyester and a wax and is substantially free of crystalline polyester. | 02-19-2009 |
20090111040 | RESIN-COATED PEARLESCENT OR METALLIC PIGMENT FOR SPECIAL EFFECT IMAGES - A pigment particle coated with at least one of a resin and a charge control surface additive, wherein the pigment particle is a pearlescent or metallic pigment. The pigment adds pearlescent effects and is a size and charge as to be used as a toner material in electrostatographic image formation. | 04-30-2009 |
20090123864 | Ultra 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 |
20100015544 | TONER 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 |
20100124713 | TONERS INCLUDING CARBON NANOTUBES DISPERSED IN A POLYMER MATRIX - A toner comprising: a polymer matrix comprising carbon nanotubes dispersed in a polymer; optionally one or more colorants; and optionally one or more waxes. | 05-20-2010 |
20100330487 | TONER COMPOSITIONS - Coated phosphorescent pigments are provided which may be utilized in toner compositions. In embodiments, the phosphorescent pigment may be coated by a powder coating process. The large pigment particles may be dry blended with dried resin latex particles, thereby coating the pigment surface, followed by heating and shearing in a rotary kiln or extruder to melt the toner resin and fuse it to the pigment surface. The resulting coated particles may be utilized with other toners, in embodiments color toners, to provide phosphorescent images. | 12-30-2010 |
20110003243 | TONER 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 |
20110027714 | TONER COMPOSITIONS - Toner particles are provided which may, in embodiments, include an additive package possessing both a silica that has been treated with polydimethyl siloxane and a titanium dioxide that has been subjected to a fluorine treatment. The silica that has been treated with polydimethyl siloxane has low levels of free polydimethyl siloxane. The combined additives provide toners with excellent charging characteristics and good blocking performance. | 02-03-2011 |
20110065038 | CURABLE 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 include small particles having a shell with a high amount of resin, which optimizes the charging characteristics of the toner. | 03-17-2011 |
20110070538 | COATED CARRIERS - The present disclosure provides carriers for use with toner compositions. In embodiments, a carrier may include a core, having a dry powder polymer coating. In embodiments, the coating may also include a colorant, such as carbon black. Processes for coating such carriers with the dry powder polymer coatings are also provided. | 03-24-2011 |
20110070540 | COATED CARRIERS - The present disclosure provides carriers for use with toner compositions. In embodiments, a carrier may include a core, having a dry powder polymer coating. In embodiments, the coating may also include a colorant, such as carbon black. Processes for coating such carriers with the dry powder polymer coatings are also provided. | 03-24-2011 |
20110091805 | TONER COMPOSITIONS - Toner particles are provided which may, in embodiments, include an additive package including a titanium dioxide that has been subjected to a fluorine treatment. In embodiments, additional additives, including a silica, optionally in combination with a metal salt of a fatty acid, for example a zinc stearate, may be included. The additives provide toners with excellent charging characteristics and good blocking performance. | 04-21-2011 |
20110097662 | COATED CARRIERS - The present disclosure provides carriers for use with toner compositions. In embodiments, a carrier may include a core, having a dry powder polymer coating. The polymer coating possesses a carbon to oxygen from about 3:1 to about 8:1. In embodiments, the coating may also include a colorant, such as carbon black. Processes for coating such carriers with the dry powder polymer coatings are also provided. | 04-28-2011 |
20110123924 | TONER COMPOSITIONS - The present disclosure provides for enzymatic polymerization to produce polyester resins suitable for use in manufacturing toners. In embodiments, crystalline copolymers, which are polyesters, may be synthesized from lactones, cyclic anhydrides, cyclic carbonates, and combinations thereof. These crystalline copolymers, in turn, may be utilized in the synthesis of toner particles. | 05-26-2011 |
20110207046 | TONER COMPOSITIONS AND PROCESSES - A process for preparing a toner includes forming an emulsion with a buffer solution and an amorphous biodegradable polyester resin represented by Formula (1): | 08-25-2011 |
20110212396 | BIO-BASED AMORPHOUS POLYESTER RESINS FOR EMULSION AGGREGATION TONERS - Disclosed are amorphous polyesters that contain only renewable resources designed for emulsion aggregation toner fabrication. The amorphous polyesters may be obtained from the mixture of three different monomers: 1,4:3,6-dianhydro-D-sorbitol (isosorbide), nonanedioic acid (azelaic acid), and butanedioic acid (succinic acid). Different polymer properties may be achieved depending on the ratio of these three monomers. By altering the ratio, polymers of high to low acid value can be obtained, as well as different ranges of glass transition temperatures. | 09-01-2011 |
20110217647 | TONER COMPOSITIONS AND PROCESSES - Toners are provided which possess excellent blocking characteristics. The toners include cores including amorphous resins having low glass transition temperatures, amorphous resins having high glass transition temperatures, and crystalline resins, and shells including amorphous resins having high glass transition temperatures. | 09-08-2011 |
20110217648 | TONER COMPOSITIONS AND METHODS - Emulsion aggregation toner particles including a resin, polysaccharide particles, an optional wax, and an optional colorant. The toner particles contain about 1 to about 50 wt % polysaccharide particles based on the total weight of the toner particles. | 09-08-2011 |
20110236815 | COATED CARRIERS - The present disclosure provides carriers for use with toner compositions. In embodiments, a carrier may include a core having a polymeric coating on at least a portion thereof. The polymer coating possesses cation binding groups. Processes for coating such carriers with the polymeric coatings are also provided. | 09-29-2011 |
20120156605 | TONER COMPOSITIONS AND PROCESSES - The present disclosure provides polymeric additives for use with toner particles. The polymeric additive of the present disclosure includes a copolymer possessing at least one monomer having a high carbon to oxygen ratio, a monomer having more than one vinyl group, and at least one amine-functional monomer. Toners possessing this polymeric additive exhibit excellent stability with respect to relative humidity and excellent charging characteristics. | 06-21-2012 |
20120156606 | TONER COMPOSITIONS AND PROCESSES - The present disclosure provides polymeric additives for use with toner particles. The polymeric additive of the present disclosure includes a copolymer possessing at least one monomer having a high carbon to oxygen ratio and at least a second amine-functional monomer. Toners possessing this polymeric additive exhibit excellent stability with respect to relative humidity and excellent charging characteristics. | 06-21-2012 |
20120183896 | Rosin-Based Resin and Toner Containing Same - Disclosed is a polyester resin comprising the polycondensation product of (a) at least one diacid, acid ester, or diester; and (b) at least one diol; wherein either (i) at least one diacid, acid ester, or diester comprises a rosin diacid, rosin acid ester, or rosin diester; or (ii) at least one diol comprises a rosin diol. Also disclosed is a toner composition comprising particles which comprise the disclosed polyester resin and an optional colorant. | 07-19-2012 |
20120189956 | SOLVENT-FREE TONER PROCESSES - The present disclosure provides processes for producing toners. In embodiments, alkyl or alkyl ether sulfates are used in a solvent-free toner production process as surfactants to provide for higher parent particle charge without adversely affecting particle size, distribution control and circularity of the toner particles. The present disclosure also provides a new formulation and process for the emulsification of polyester resins to form nano-scale particles dispersed in water (latex) without the use of organic solvents by an extrusion process. | 07-26-2012 |
20130164664 | MIXER APPARATUS AND METHOD OF MAKING DEVELOPER - The present teachings describe an apparatus for mixing developer. The apparatus includes a first loader for dispensing a predetermined amount of toner particles into a container and a second loader for dispensing a predetermined amount and carrier particles in the container. A sealer seals the container. An acoustic mixer is provided for mixing the container, toner particles and carrier particles at a resonant frequency. A method of mixing developer is disclosed. | 06-27-2013 |
20130236829 | SUPER LOW MELT TONER WITH CORE-SHELL TONER PARTICLES - A toner particle having a core and a shell, and a method for making the toner particle. The core includes a crystalline resin and the shell includes an amorphous resin. The shell is substantially to completely free of the crystalline resin. The toner particle permits inclusion of greater amounts of crystalline resin materials in the core, thereby lowering the minimum fusing temperature of the toner formed from the particles. | 09-12-2013 |
20130255190 | CUSTOM COLOR TONER PRODUCTION SYSTEMS AND METHODS - A custom color toner production system includes a toner delivery system, a cartridge sealing system, a mixing system, and a packaging system. The toner delivery system includes selectively engageable fluid delivery lines for delivering toner of particular color to a cartridge as need for producing a custom color toner in response to an electronically submitted user request. Cartridge containing the unmixed delivered toner may be sealed by a sealing system, and blended using a resonant mixer to produce a custom color toner. The cartridge containing the mixed custom color toner may be packaged using a packaging system. | 10-03-2013 |
20140154622 | LATEX CARRIER COATING AND METHODS FOR MAKING THE SAME - A carrier coating comprising a metal core and a polymeric coating that may be used to form toner. The carrier coating, through how it is made, exhibits improved coating abilities that may be used to completely coat carrier particles, and thus provide excellent aging performance. | 06-05-2014 |
20140170555 | Cardanol Derivatives in Polyester Toner Resins - The present disclosure provides a polyester toner resin comprising a polyhydroxylated cardanol derivative, that may be used in manufacturing an emulsion aggregation (EA) toner for imaging devices. | 06-19-2014 |
20140295333 | IMAGE FORMING SYSTEM - The presently disclosed embodiments relate generally to image forming systems comprising imaging apparatus members and toner compositions. More specifically, the present embodiments relate to specific toner compositions for use with electrophotographic imaging members comprising an overcoat layer protecting the imaging member surface and a contact type charging device, such as a “bias charge roll” (BCR). The toner compositions comprise a combination of additives that provide an image forming system that does not suffer from the commonly observed deletion and imaging member wear issues. | 10-02-2014 |
20140302435 | CARRIER RESINS WITH IMPROVED RELATIVE HUMIDITY SENSITIVITY - The disclosure generally describes carrier resins, and in particular, resins used for carrier coatings which include at least one ester functional group and at least one cyclic aliphatic group containing at least one nitrogen atom in the cyclic ring structure. Carriers having such resins in the coating exhibit high charge and excellent relative humidity (RH) sensitivity of charge to changing environmental conditions. | 10-09-2014 |
20140370429 | Negative Charge Carrier Resins With RH Sensitivity - The instant disclosure describes methacrylate coated carrier resins with hydrophobic substituents for charge control and improved RH sensitivity. | 12-18-2014 |
20140370432 | Carrier Resins With Improved RH Sensitivity - The instant disclosure describes acrylate-coated carrier resins exhibiting both high charge and improved RH sensitivity, carrier compositions comprising the acrylate coated carriers and developers comprising the carrier resins. | 12-18-2014 |
20140370435 | Carrier Resins With Improved RH Sensitivity - The instant disclosure describes methacrylate coated carrier resins with aromatic substituent groups with optionally carbon atoms replaced by heteroatoms such as S, N, and O for charge control and improved RH sensitivity. | 12-18-2014 |
20150056550 | Simplified Process for Sustainable Toner Resin - The disclosure describes a one reaction process for making a bio-based polyester resin. The resultant polyester resin retains thermal properties as compared to a similar resin but made using previous multi-step processes conducted in separate vessels. | 02-26-2015 |