Patent application number | Description | Published |
20080299478 | Toner compositions - The present disclosure provides processes for reducing the particle size of latex resins and toners produced with such resins. In embodiments, a carboxylic acid may be added to materials utilized to produce a latex and reduce the particle size of the resulting latex particles and toner particles. In accordance with the present disclosure, one may be able to utilize materials for the production of latex resins and toners which may otherwise produce particles that are too large in the absence of the carboxylic acid. | 12-04-2008 |
20090061342 | Toner compositions - The present disclosure provides processes for reducing the particle size of latex resins and toners produced with such resins. In embodiments, a buffer may be added to materials utilized to produce a latex and reduce the particle size of the resulting latex particles and toner particles. In accordance with the present disclosure, one may be able to utilize materials for the production of latex resins and toners which may otherwise produce particles that are too large in the absence of the buffer. | 03-05-2009 |
20090061343 | Toner compositions - A toner having its surface functionalized with functional groups, and processes for producing the same, are provided. | 03-05-2009 |
20090246680 | LATEX PROCESSES - Processes for continuously forming latex emulsions useful in preparing toners are provided which do not require the use of solvents. | 10-01-2009 |
20090263740 | TONER COMPOSITIONS - The present disclosure provides processes for reducing the particle size of latex resins and toners produced with such resins. In embodiments, a gel latex may be formed as a seed particle and then utilized to form latex resins and toner particles. In accordance with the present disclosure, one may be able to utilize materials for the production of latex resins and toners which may otherwise produce particles that are too large in the absence of the gel latex. | 10-22-2009 |
20100266948 | SOLVENT-FREE EMULSION PROCESS - A process for making a resin emulsion suitable for use in forming toner particles is provided. In embodiments, a suitable process includes melt mixing a resin in the absence of an organic solvent, optionally adding a surfactant to the resin, adding to the resin a basic agent and water, and subjecting the resin, basic agent and water to acoustic mixing at a suitable frequency to form an emulsion of resin particles. In embodiments, the resin emulsion thus produced may be utilized to form a toner. | 10-21-2010 |
20100266949 | SOLVENT-FREE EMULSION PROCESS USING ACOUSTIC MIXING - A process for making toner particles is provided. In embodiments, a suitable process includes melt mixing a resin in the absence of an organic solvent, optionally adding a surfactant to the resin, adding to the resin at least one colorant and other optional toner additives, adding to the resin a basic agent and water to form a mixture, and subjecting the mixture to acoustic mixing at a suitable frequency to form to form an emulsion. A phase inversion may then be performed to create a phase inversed emulsion including a disperse phase comprising molten resin and the optional ingredients of the toner composition, at which time toner-sized droplets may be solidified from the disperse phase into toner particles, which can be recovered for use. | 10-21-2010 |
20100310979 | EFFICIENT SOLVENT-BASED PHASE INVERSION EMULSIFICATION PROCESS WITH DEFOAMER - A process and system for making a resin emulsion suitable for use in forming toner particles including a silicone free anti-foam agent to control foam during formation of a polyester dispersion. | 12-09-2010 |
20100310983 | TONER PROCESS INCLUDING MODIFYING RHEOLOGY - A process for making particles is provided. In embodiments, a suitable process includes adding a rheology modifier to an emulsion utilized to form toner particles. The rheology modifier permits the use of a higher solid content in the emulsion, with a resulting higher yield of toner particles, without requiring the use of powerful mixing equipment. | 12-09-2010 |
20100310984 | TONER PROCESSES UTILIZING A DEFOAMER AS A COALESCENCE AID FOR CONTINUOUS AND BATCH EMULSION AGGREGATION - A process for making toner particles is provided. In embodiments, a suitable process includes adding a defoamer to an emulsion utilized to form toner particles. Utilization of the defoamer allows for a reduction in the overall aggregation/coalescence cycle time and slurry viscosity, while producing a toner with improved GSDs, low coarse and target circularities. | 12-09-2010 |
20110039199 | TONER COMPOSITIONS - A toner having a core with a first latex having a specific glass transition temperature, and further having a shell surrounding the core with a second latex having a specific glass transition temperature and possessing functional groups, and processes for producing the same. | 02-17-2011 |
20110086301 | EMULSION AGGREGATION TONER COMPOSITION - A toner composition that includes at least one low molecular weight amorphous polyester resin, at least one high molecular weight amorphous polyester resin, at least one crystalline polyester resin, at least one wax, at least one biocide and at least one colorant, and wherein the toner composition has a minimum fusing temperature of from about 100° C. to about 125° C. | 04-14-2011 |
20110097664 | METHOD FOR CONTROLLING A TONER PREPARATION PROCESS - A method of making toner particles, including mixing at least one emulsion of at least one resin, a colorant, an optional wax, and optional additives to form a slurry; heating the slurry to form aggregated particles in the slurry; freezing aggregation of the particles with a buffer solution; and heating the aggregated particles in the slurry to coalesce the particles into toner particles. | 04-28-2011 |
20110150985 | METHODS FOR PREPARING PHARMACEUTICALS BY EMULSION AGGREGATION PROCESSES - A method for making a pharmaceutical by emulsion aggregation, the method including emulsifying a first pharmaceutical agent and a biodegradable resin to form a primary emulsion of pre-aggregated particles in a slurry; aggregating the pre-aggregated particles to form aggregated pharmaceutical particles in the slurry; and isolating the pharmaceutical particles. The method may be used to make time-released, multi-formulation, and inhalable pharmaceuticals. | 06-23-2011 |
20110177444 | ADDITIVE PACKAGE FOR TONER - An additive package is provided for use with toners. The additive package may be utilized with ultra low melt toners formed by emulsion aggregation processes. The additive package of the present disclosure provides toners with a low minimum fusing temperature to enable high speed printing. Toners possessing the additive package of the present disclosure also possess wide fusing latitude, good release, high gloss, high blocking temperature, robust particles, excellent triboelectric charge properties, and the like. | 07-21-2011 |
20120148950 | TONER PROCESSES UTILIZING WASHING AID - A process for making toner particles is provided. In embodiments, a suitable process includes adding a washing aid agent to toner particles at the time of washing the toner particles prior to their drying and recover. The washing aid agent assist in the removal of ionic species, including surfactants and ions that are part of the emulsion aggregation process, from the resulting toner particles. Utilization of the washing aid agent produces toner particles having improved charging characteristics. | 06-14-2012 |
20120244466 | Toner wash comprising ionic liquid - A washing process using one or more ionic liquids (ILs) as a washing aid agent for toners, including toners produced using such ILs, such as, low melt toners, is provided. ILs are environmentally sound, green solvents that act to swell toner particle surfaces so that surface absorbed and adsorbed pollutants, such as, surfactants and other manufacturing reactants, can be effectively removed. The resulting toners have good charging, charge maintenance and RH sensitivity. | 09-27-2012 |
20120244470 | TONER COMPOSITIONS AND PROCESSES - Processes for producing toners are provided. The processes include emulsion aggregation processes, whereby a reactive coalescent is utilized in the coalescence step to coalesce aggregated particles, thereby forming toner particles. The resulting toners may be highly pigmented, and may possess low melt characteristics. | 09-27-2012 |
20130184392 | PROCESS OF MAKING POLYESTER LATEX WITH BUFFER - Methods herein include mixing at least one polyester resin with at least one solvent to form a resin mixture, adding water to cause phase inversion and form a polyester latex, adding at least one buffering agent to the phase inverted mixture to stabilize the phase inverted mixture, and subsequent to the buffering agent addition, substantially removing the at least one solvent from the phase inverted mixture. | 07-18-2013 |
20130189616 | METHOD FOR MANUFACTURING PHOTORECEPTOR LAYERS - The present teachings describe a process for mixing comprising obtaining a dispersion of solid particles and an organic solvent wherein the dispersion comprises a particulate solid content of from about 0.5 weight percent to about 10 weight percent. The dispersion is mixed at a resonant frequency of the mixing system. | 07-25-2013 |
20130216946 | Continuous production of fine toner - A continuous process for forming fine toner using a twin screw extruder. | 08-22-2013 |
20130302729 | Toner wash comprising ionic liquid - A washing process using one or more ionic liquids (ILs) as a washing aid agent for toners, including toners produced using such ILs, such as, low melt toners, is provided. ILs are environmentally sound, green solvents that act to swell toner particle surfaces so that surface absorbed and adsorbed pollutants, such as, surfactants and other manufacturing reactants, can be effectively removed. The resulting toners have good charging, charge maintenance and RH sensitivity. | 11-14-2013 |
20140065537 | CONTINUOUS PROCESS FOR MANUFACTURING TONERS - The continuous process for manufacturing toners disclosed herein includes continuously feeding components of a toner composition into a feed section of a screw extruder at a controlled rate. The continuous process for manufacturing toners may include feeding the components of a toner composition into the feed section of a screw extruder without performing an external or secondary dispersion step. That is to say, the components of the toner composition may be fed directly into the extruder without using dispersions of individual components as used in batch processes. Rather, the toner components are added to the extruder in dry form, melt-mixed, and may be dispersed in aqueous form in the extruder. The process may produce micron-sized toner particles, thus no further size reduction may be necessary. | 03-06-2014 |
20140142216 | PROCESS OF MAKING POLYESTER LATEX WITH BUFFER - Methods herein include mixing at least one polyester resin with at least one solvent to form a resin mixture, adding water to cause phase inversion and form a polyester latex, adding at least one buffering agent to the phase inverted mixture to stabilize the phase inverted mixture, and subsequent to the buffering agent addition, substantially removing the at least one solvent from the phase inverted mixture. | 05-22-2014 |