Patent application number | Description | Published |
20080199802 | TONER PROCESS - The present disclosure relates to a process for latex preparation comprising a first heating of a latomer mixture comprising at least one free radical polymerizable monomer to low conversion and then adding at least one alkylene anhydride; a second heating of the latomer mixture to low conversion; a third heating of the latomer mixture to form polymeric particles; and combining at least one amine with the polymeric particles. | 08-21-2008 |
20080210124 | CORE-SHELL POLYMER PARTICLES - Disclosed herein are nano-sized particles having a core portion comprising a crystalline polymer and a shell portion comprising a polymer derived from at least one monomer not miscible with the crystalline polymer of the shell portion. | 09-04-2008 |
20080213687 | TONER PROCESS - The present disclosure relates to a toner process comprising providing a resin miniemulsion comprising polymeric particles comprising at least one free radical polymerizable monomer compound and at least one alkylene anhydride; blending the miniemulsion with at least one colorant, at least one amine, and optionally at least one wax; heating the resulting mixture below or about equal to the glass transition temperature (Tg) of the resin emulsion; and heating the resulting mixture above or about equal to the glass transition temperature (Tg) of the resin emulsion. | 09-04-2008 |
20080220359 | TONER PROCESSES - Disclosed herein are toner particles generated by emulsion/aggregation processes. The processes are conducted under conditions that shorten the time for coalescence and post-formation washing, thereby increasing efficiency of the processes as compared to conventional processes. | 09-11-2008 |
20080254381 | CHEMICAL 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 |
20080318145 | EXTERNAL SURFACE ADDITIVE COMPOSITIONS - A toner having at least one binder, at least one colorant and external additives. The external additives include at least one fluoropolymer. An electrophotographic image forming machine and method includes the toner with at least one fluoropolymer. | 12-25-2008 |
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 |
20090130586 | Toner Composition and Method - A method for forming toner particles includes polymerizing monomers to form a latex comprising polymer particles; combining the latex with an unsaturated curable resin to form aggregates containing the polymer particles and the unsaturated curable resin particles; and heating the aggregates to form coalesced particles. A toner composition that may be formed by the process described herein contains toner particles containing: (i) a polymer comprising a photoinitiator, (ii) an unsaturated curable resin and, (iii) a colorant. | 05-21-2009 |
20090142692 | LOW MOLECULAR WEIGHT LATEX AND TONER COMPOSITIONS COMPRISING THE SAME - Provided are a latex process and a toner process, both of which include the preparation of a latex having weight average molecular weight of from about 12×10 | 06-04-2009 |
20090220880 | GRAFTING FUNCTIONALIZED PEARLESCENT OR METALLIC PIGMENT ONTO POLYESTER POLYMERS FOR SPECIAL EFFECT IMAGES - Pigment particles with at least one metal oxide surface additive, wherein the at least one metal oxide surface additive is a metal oxide particle covalently bonded with at least one polycondensation polymer, wherein the pigment particle is a pearlescent or metallic pigment. | 09-03-2009 |
20090263737 | IMAGING MEMBER AND METHODS OF FORMING THE SAME - The presently disclosed embodiments are directed to an imaging member having an outermost layer formulation that includes wax particles which creates a rough surface morphology for the layer and imparts increased scratch resistance, reduced torque, and improved cleaning performance to the layer. In embodiments, the outermost layer is an overcoat layer used for an improved imaging member having a substrate, a charge transport layer, and an overcoat positioned on the charge transport layer. | 10-22-2009 |
20100053643 | METHOD AND APPARATUS FOR PRINTING - Aspects of the disclosure provide a printing method that can utilize a lightly pigmented toner along with a darkly pigmented toner to improve the image quality. The method can include receiving a dataset corresponding to a printing of a printing system using a darkly pigmented toner. The printing system may have an undesirable optical density printing range for the darkly pigmented toner. Further, the method can include converting the dataset to a first dataset corresponding to a first printing of the printing system using the darkly pigmented toner, and a second dataset corresponding to a second printing of the printing system using a lightly pigmented toner. The first dataset can avoid the undesirable optical density printing range for the darkly pigmented toner, and a combination of the first printing and the second printing providing a substantially same printed optical density corresponding to the received dataset. | 03-04-2010 |
20100092215 | PRINTING SYSTEM WITH TONER BLEND - An improved electrostatic printing method includes printing a first marking material, such as a fully colorized toner, and also printing a second marking material on the same area of the print substrate. The second marking material is a mixture of two toners, where at least one of the two toners has a lower color strength than the first marking material. The second marking material has the same hue as the first marking material, and the ratio of toners in the mixture is such that the second marking material has a color strength matching that of an undesirable optical density printing rage of the first marking material. | 04-15-2010 |
20100092886 | TONER COMPOSITIONS - The present disclosure provides processes for producing toners by emulsion aggregation where the resulting toner particles have high pigment loadings and desired circularity. The methods include adding a metal, in embodiments a metal salt, at the beginning of coalescence, which surprisingly speeds the coalescence process and produces toner particles having a desired size and circularity for use in electrophotographic imaging systems. | 04-15-2010 |
20100173239 | LOW MELT COLOR TONERS WITH FLUORESCENCE AGENTS - A low melt or ultra low melt toner includes at least one amorphous polyester of an alkoxylated bisphenol based polyester, a crystalline polyester derived from the reaction of an aliphatic dicarboxylic acid or aromatic dicarboxylic acid with an aliphatic diol, at least one colorant and at least one fluorescence agent. Methods of authentication of the toner, of authentication of documents formed from the toner, of embedding information in documents, and the like are also set forth. | 07-08-2010 |
20100285403 | 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 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 |
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 |
20110033798 | PHOTORECEPTOR OUTER LAYER AND METHODS OF MAKING THE SAME - The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. Embodiments pertain to an improved electrophotographic imaging member comprising a very thin outer layer on the imaging member surface, where the outer layer comprises healing materials that act as a barrier against moisture and/or surface contaminants. The improved imaging member exhibits improved xerographic performance, such as reduced wear and deletions in high humidity conditions. Embodiments also pertain to methods for making the improved electrophotographic imaging member. | 02-10-2011 |
20110052882 | TONER HAVING TITANIA AND PROCESSES THEREOF - The present disclosure provides white toner compositions and processes for making same. In embodiments, a desirable white toner may be produced without having to resort to excessive pigment loading, having desirable gloss characteristics. | 03-03-2011 |
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 |
20110111334 | LIGHT SHOCK RESISTANT OVERCOAT LAYER - Embodiments pertain to a novel imaging member, namely, an imaging member or photoreceptor comprising an overcoat layer which comprises light-absorbing material that improves print quality. The light-absorbing material reduces the intrinsic light shock suffered by conventional overcoat layers without negatively impacting electrical properties of the overcoat layer. | 05-12-2011 |
20110136056 | TONER COMPOSITIONS - The present disclosure relates to a toner including a core comprising at least one amorphous resin, at least one crystalline resin and one or more optional ingredients such as optional colorants, optional waxes, gels, and combinations thereof. The toner also includes a shell having an environmentally friendly charge control agent co-emulsified with at least one amorphous shell resin. | 06-09-2011 |
20110143274 | TONER PROCESSES - The present disclosure provides toners and processes for making said toners. In embodiments, the toners are invisible when viewed under natural light, but possess a UV emitter that renders them visible when exposed to UV light of a specific wavelength. By selecting the appropriate UV emitter and utilizing an ionic crosslinker, the gloss of the toner may be tailored to match the gloss of any substrate, such as paper, to which the toner is to be applied, thereby further enhancing its invisibility under visible light. | 06-16-2011 |
20110143278 | TONER PROCESSES - The present disclosure provides toners and processes for making said toners. In embodiments, the toners are invisible when viewed under natural light, but possess a fluorescent agent that renders them visible when exposed to UV light of a specific wavelength. In other embodiments the toners have a color under natural light, and a different color when exposed to UV light. | 06-16-2011 |
20110177441 | TONER COMPOSITIONS - The present disclosure provides processes for producing images of excellent color fidelity when incorporating a cyan toner with a lower colorant loading in addition to a first cyan toner. In embodiments, the cyan pigmented particles may be cyan emulsion aggregation toners. In accordance with the present disclosure, a pair of cyan toners are matched in color, wherein the color of a first cyan toner printed at a predetermined halftone area coverage on a substrate substantially matches the color of the solid (100%) printed patch of the second cyan toner, which is lighter than the first cyan toner, thus avoiding a visible hue shift on the print that would otherwise be objectionable. In embodiments, the light cyan toner is color matched by adding a hue-adjusting colorant or combination of colorants which absorb wavelengths of light between 500 and 600 nanometers, and optionally adding a shade-adjusting colorant or combination of colorants which absorb wavelengths of light between 400 and 500 nanometers. | 07-21-2011 |
20110177442 | TONER COMPOSITIONS - The present disclosure provides processes for producing images of excellent color fidelity when incorporating a magenta toner with a lower colorant loading in addition to a first magenta toner. In embodiments, the magenta pigmented particles may be magenta emulsion aggregation toners. In accordance with the present disclosure, a pair of magenta toners are matched in color, wherein the color of a first magenta toner printed at a predetermined halftone area coverage on a substrate substantially matches the color of the solid (100%) printed patch of the second magenta toner, which is lighter than the first magenta toner, thus avoiding a visible hue shift on the print that would otherwise be objectionable. In embodiments, the light magenta toner is color matched by adding a hue-adjusting colorant or combination of colorants which absorb wavelengths of light between 400 and 500 nanometers, and optionally adding a shade-adjusting colorant or combination of colorants which absorb wavelengths of light between 600 and 700 nanometers. | 07-21-2011 |
20110217645 | TONER COMPOSITIONS AND METHODS - A toner and method for making a toner that includes an amorphous resin, a crystalline resin, and a cyanine dye. The cyanine dye improves heat cohesion without negatively effecting other desirable properties. | 09-08-2011 |
20110250535 | TONER COMPOSITIONS AND PROCESSES - The present disclosure provides processes for producing polyester toners by emulsion aggregation where the resulting toner particles have high pigment loadings and desired circularity. The methods include adding a metal, in embodiments a metal compound, at the beginning of coalescence, which speeds the coalescence process and produces toner particles having a desired size and circularity for use in electrophotographic imaging systems. | 10-13-2011 |
20110250536 | IMAGING PROCESSES - The present disclosure provides processes for producing images with toner particles. In embodiments, toner particles of a certain diameter in size are applied to a substrate as an incomplete monolayer, and then fused to form an image that is a complete monolayer and possesses a thickness less than the diameter of the particles utilized to form the image. | 10-13-2011 |
20110300480 | Toner Compositions - The present disclosure relates to a toner including a core comprising at least one amorphous resin, at least one crystalline resin and one or more optional ingredients such as optional colorants, optional waxes, gels, and combinations thereof. The toner also includes a shell having an environmentally friendly charge control agent co-emulsified with at least one amorphous shell resin. | 12-08-2011 |
20110311909 | Toner Compositions - The present disclosure provides processes for producing images of excellent color fidelity when incorporating a magenta toner with a lower colorant loading in addition to a first magenta toner. In embodiments, the magenta pigmented particles may be magenta emulsion aggregation toners. In accordance with the present disclosure, a pair of magenta toners are matched in color, wherein the color of a first magenta toner printed at a predetermined halftone area coverage on a substrate substantially matches the color of the solid (100%) printed patch of the second magenta toner, which is lighter than the first magenta toner, thus avoiding a visible hue shift on the print that would otherwise be objectionable. In embodiments, the light magenta toner is color matched by adding a hue-adjusting colorant or combination of colorants which absorb wavelengths of light between 400 and 500 nanometers, and optionally adding a shade-adjusting colorant or combination of colorants which absorb wavelengths of light between 600 and 700 nanometers. | 12-22-2011 |
20120028178 | PHOTORECEPTOR OUTER LAYER AND METHODS OF MAKING THE SAME - The presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital apparatuses. Embodiments pertain to an improved electrophotographic imaging member used in customer replaceable units (CRU) comprising a very thin outer layer on the imaging member surface, where the outer layer comprises healing materials that act as a barrier against moisture and/or surface contaminants. The improved imaging member exhibits improved xerographic performance, such as reduced wear and deletions in high humidity conditions. | 02-02-2012 |
20120043504 | TONER PROCESSES - The present disclosure provides toners and processes for making said toners. In embodiments, the toners include a fluorescent additive having a fluorescent agent. Toners are colorless when viewed under natural light but when exposed to UV light of a specific wavelength the toners are rendered bright green due to the presence of the fluorescent agent. | 02-23-2012 |
20120070770 | MAGNETIC TONER COMPOSITIONS - The present disclosure relates to a magnetic toner composition. The toner composition includes one or more resins, and spherical ferromagnetic nanoparticles. Also provided is a process for preparing these toners including ferromagnetic nanoparticles. In embodiments, the aggregation of the toner is conducted at a pH greater than about 7, without the use of a coagulant. Additionally, in embodiments, freezing (stopping particle growth) and coalescence of the toner particles may be conducted at a pH greater than about 9. In yet other embodiments, the process may be conducted under an inert gas such as argon to avoid oxidation of the ferromagnetic nanoparticles during toner preparation. | 03-22-2012 |
20120070776 | EMULSION AGGREGATION TONERS HAVING FLOW AIDS - The present disclosure provides processes for producing toners. In embodiments, flow aids are added to a wet cake including the toner particles, prior to drying. The addition of the flow aid improves flow characteristics of the toner, thereby enhancing overall drying time, reducing the amount of coarse particles, and improving yield, without adversely affecting fusing and charging of the toner particles. | 03-22-2012 |
20120099897 | SURFACE-PATTERNED PHOTORECEPTOR - Presently disclosed embodiments relate generally to layers that are useful in imaging apparatus members and components, for use in electrophotographic, including digital, apparatuses. More particularly, the embodiments pertain to an electrophotographic imaging member having its outer surface patterned such that friction with the cleaning blade is significantly reduced. | 04-26-2012 |
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 |
20120202148 | Emulsion Aggregation Toner Compositons - Disclosed is a toner which comprises particles comprising: (a) a core comprising: (1) a first resin; and (2) a first conductive colorant; and (b) a shell comprising: (1) a second resin; and (2) a second conductive colorant. | 08-09-2012 |
20120270146 | MAGNETIC TONER COMPOSITIONS - The present disclosure relates to a process for preparing a polyester-based magnetic toner composition. The toner composition includes one or more polyester amorphous binder resins, optionally a crystalline polyester resin, and spherical barium iron oxide particles. In embodiments, the toner is prepared from barium iron oxide particles that are in a dispersion including water and a dispersant. In yet other embodiments, the process may be conducted under an inert gas such as argon to avoid oxidation of the ferromagnetic particles during toner preparation. | 10-25-2012 |
20120308925 | Hyperpigmented black low melt toner - The present disclosure describes a hyperpigmented low melt black toner containing a thermal carbon black which exhibits reduced dielectric loss and improved tribo charging. | 12-06-2012 |
20130084519 | Toner with improved charging - The disclosure describes a toner process in which portion-wise addition of colorant(s) during particle formation is used to control the distribution of colorant within the toner particle, thereby enhancing A zone charge. | 04-04-2013 |
20130115548 | Alkyl silane surface treated silica for toner - The present disclosure describes toner compositions comprising an alkyl surface-treated silica, which toners exhibit improved tribo-charging, second transfer efficiency and IQ without impacting color. | 05-09-2013 |
20130115549 | Low dielectric additives for toner - The present disclosure describes toner compositions containing an additive package including one or more additives that exhibit low dielectric loss, which toners exhibit improved tribo charging, 2 | 05-09-2013 |
20130157187 | Toners with Improved Dielectric Loss - The disclosure describes a pigment treated with a rosin and a toner particle containing that rosin-treated pigment particle. The toner has a lower level of dielectric loss. | 06-20-2013 |
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 |
20130183613 | SHORT WAVELENGTH PHOTOCONDUCTIVE MEMBERS - There is provided a photoconductive member comprising a conductive support and disposed thereon a charge generating layer. The charge generating layer comprises a first polymer binder and a flaventhrone component having blue wavelength photosensitivity of the following formula: | 07-18-2013 |
20130189610 | SHORT WAVELENGTH PHOTOCONDUCTIVE MEMBERS - There is provided a photoconductive member comprising a conductive support and disposed thereon a charge generating layer. The charge generating layer comprises a first polymer binder and a perylene-tetracarbonic acid amide pigment having blue wavelength photosensitivity of the following formula: | 07-25-2013 |
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 |
20130264188 | PROCESS FOR THE PREPARATION OF HYDROXY GALLIUM PHTHALOCYANINE - The present teachings describe a process for converting a HOGaPc Type I polymorph to the HOGaPc Type V polymorph. The process includes obtaining a slurry comprising hydroxy gallium phthalocyanine (HOGaPc) Type I polymorph. The slurry is mixed at a resonant frequency of the slurry by applying a low frequency acoustic field for a time sufficient to convert the HOGaPc Type I polymorph to the HOGaPc Type V polymorph. | 10-10-2013 |
20130337377 | Toners with Improved Dielectric Loss - The disclosure describes a pigment treated with a rosin and a toner particle containing that rosin-treated pigment particle. The toner has a lower level of dielectric loss. | 12-19-2013 |
20140045116 | EMULSION AGGREGATION TONER PROCESS COMPRISING DIRECT ADDITION OF SURFACE-TREATED PIGMENT - A method of making a toner that includes adding pigments into an emulsion aggregation toner without first preparing a pigment dispersion. The method eliminates the pigment dispersion step in the manufacture of emulsion aggregation toilers by surface-treating pigments. Dry surface-treated pigments can be directly incorporated into the toner prior to aggregation in the aggregation coalescence process without the need to first prepare aqueous pigment dispersions. | 02-13-2014 |
20140147781 | Hyperpigmented Toner - The present disclosure describes hyperpigmented toner compositions containing a mixture of insulative color pigments, which toners exhibit reduced dielectric loss and improved tribo-charging. | 05-29-2014 |
20140197364 | UV Red Fluorescent EA Toner - The present disclosure relates to a toner design for a clear UV red fluorescence toner having a high lanthanide complex pigment loading, including methods of making the fluorescence toner using a saccharide or a sugar acid to avoid complexation of lanthanide ions from the pigment, with lower aggregation and coalescence temperatures in the preparation of toner particles, where the particles exhibit a narrow size distribution and good xerographic performance. | 07-17-2014 |
20140199623 | Tuning Toner Gloss with Bio-based Stabilizers - The disclosure describes a process to produce toner with tunable gloss levels comprising a stabilizer to freeze particle growth following aggregation, where the stabilizer does not chelate metal ions. | 07-17-2014 |
20140199625 | Preparing Amorphous Polyester Resin Emulsions - A process for making a latex emulsion including contacting at least one amorphous polyester resin with at least two organic solvents to form a resin mixture, adding a neutralizing agent, and deionized water to the resin mixture, removing the solvent from the formed latex, and separating the solvent from water. Further, the process is carried out above the resin Tg for making the latex, which drives the latex particle size under 100 nm, where toners made from the latex show improved charging performance. | 07-17-2014 |
20140308608 | Sol-Gel Silica Additives - The present disclosure describes toner additive packages comprising two or more colloidal silicas. | 10-16-2014 |
20140363761 | METHOD OF MAKING TONERS - The present embodiments relate to methods of making a toner composition. More specifically, the present embodiments relate to methods of including a functional material into a toner composition. | 12-11-2014 |
20140374672 | CONDUCTIVE METAL INKS WITH POLYVINYLBUTYRAL BINDER - A conductive ink includes a conductive material, a thermoplastic polyvinylbutyral terpolymer binder and a glycol ether solvent. The conductive material may be a conductive material is a conductive particulate having an average size of from about 0.5 to about 10 microns and as aspect ratio of at least about 3 to 1, such as a silver flake. | 12-25-2014 |
20140377454 | METHOD OF IMPROVING SHEET RESISTIVITY OF PRINTED CONDUCTIVE INKS - A method of forming a printed pattern on a substrate includes printing a pattern onto the substrate with a conductive ink including a conductive material, a thermoplastic binder and a solvent, curing the printed pattern, and fusing the printed pattern by feeding the printed pattern through a fusing system operated at a temperature of about 20° C. to about 130° C. above the glass transition temperature of the thermoplastic binder and at least 120° C. at a minimum, a pressure of from about 50 psi to about 1500 psi, and a feed rate through the fusing system of about 1 m/min to about 100 m/min. The method may be done continuously. The method improves the sheet resistivity of the printed ink. | 12-25-2014 |
20150024314 | TONER ADDITIVES TO PREVENT BIAS ROLLER CONTAMINATION - A toner composition includes toner particles and additives disposed on an exterior surface of the toner particles, the additives include uncoated particles satisfying the equation: | 01-22-2015 |
20150056551 | TONER PROCESS COMPRISING REDUCED COALESCENCE TEMPERATURE - A method of forming toner particles includes aggregating a mixture of a latex, a wax, and an optional pigment to form pre-toner particles, and coalescing the pre-toner particles at a substantially constant target temperature selected within a range from about the glass transition temperature of the pre-toner particles to about 75° C., thereby creating toner particles having a substantially constant particle size distribution during the coalescing step. | 02-26-2015 |