WO2011102696A2 - 중합 토너 및 이의 제조 방법 - Google Patents
중합 토너 및 이의 제조 방법 Download PDFInfo
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- WO2011102696A2 WO2011102696A2 PCT/KR2011/001153 KR2011001153W WO2011102696A2 WO 2011102696 A2 WO2011102696 A2 WO 2011102696A2 KR 2011001153 W KR2011001153 W KR 2011001153W WO 2011102696 A2 WO2011102696 A2 WO 2011102696A2
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0802—Preparation methods
- G03G9/0804—Preparation methods whereby the components are brought together in a liquid dispersing medium
- G03G9/0806—Preparation methods whereby the components are brought together in a liquid dispersing medium whereby chemical synthesis of at least one of the toner components takes place
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/0825—Developers with toner particles characterised by their structure; characterised by non-homogenuous distribution of components
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
- G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08704—Polyalkenes
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
- G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08706—Polymers of alkenyl-aromatic compounds
- G03G9/08708—Copolymers of styrene
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
- G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08706—Polymers of alkenyl-aromatic compounds
- G03G9/08708—Copolymers of styrene
- G03G9/08711—Copolymers of styrene with esters of acrylic or methacrylic acid
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
- G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08726—Polymers of unsaturated acids or derivatives thereof
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
- G03G9/08775—Natural macromolecular compounds or derivatives thereof
- G03G9/08782—Waxes
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- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
- G03G9/08784—Macromolecular material not specially provided for in a single one of groups G03G9/08702 - G03G9/08775
- G03G9/08788—Block polymers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/087—Binders for toner particles
- G03G9/08784—Macromolecular material not specially provided for in a single one of groups G03G9/08702 - G03G9/08775
- G03G9/08793—Crosslinked polymers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/09—Colouring agents for toner particles
- G03G9/0902—Inorganic compounds
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/09—Colouring agents for toner particles
- G03G9/0906—Organic dyes
- G03G9/091—Azo dyes
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/09—Colouring agents for toner particles
- G03G9/0906—Organic dyes
- G03G9/0918—Phthalocyanine dyes
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/09—Colouring agents for toner particles
- G03G9/0906—Organic dyes
- G03G9/092—Quinacridones
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/097—Plasticisers; Charge controlling agents
- G03G9/09733—Organic compounds
- G03G9/09741—Organic compounds cationic
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/097—Plasticisers; Charge controlling agents
- G03G9/09733—Organic compounds
- G03G9/0975—Organic compounds anionic
Definitions
- the present invention relates to a thickening toner and a method of manufacturing the same. More particularly, the present invention relates to an improved toner and a method of manufacturing the same. The present invention relates to a polymerizable toner capable of exerting and a method of manufacturing the same.
- Toner is used in electrophotographic development, electrostatic printers, copiers, and the like, and refers to a paint that can be transferred to and fixed on a transfer object to form a desired pattern.
- toner is prepared by using a pulverization method and a polymerization method.
- the most widely known method is a pulverization method, in which a resin and a pigment are put together through a melt-mixing process to melt-mixed black.
- the silver is extruded, pulverized and classified to produce toner particles.
- the toner particles produced by this process have a problem of poor chargeability or flowability because the toner particles have a very irregular shape such as a wide particle size distribution and sharp edges.
- a method of producing spherical toner particles by a polymerization method has been proposed.
- a method of producing a toner by a polymerization method an emulsion polymer polymerization method (a bulk method) and a suspension polymerization method are known. Since the emulsion polymerization method is difficult to control the size distribution of particles and there is a problem in the quality reproducibility of the manufactured toner, Toner production by suspension polymerization is more preferred.
- monomer additives and various additives such as pigments, waxes, charge control agents, initiators, and the like are uniformly dispersed to prepare monomer mixtures, and the dispersion is dispersed in an aqueous dispersion, followed by polymerization reaction.
- Toner particles are prepared having a diameter of about 6 to 10 micrometers, which is a suitable size.
- the toner particles produced by the suspension polymerization include additives such as wax to improve releasability with the fixing in the fixing process, and such additives lower the amount of charge on the surface of the toner so that the printing efficiency or The problem that the offset characteristic falls is shown.
- the present invention is to provide a polymerized toner having excellent offset characteristics, and capable of realizing high transfer efficiency and uniform images, thereby exhibiting excellent performance in applications such as high-speed copying and development of transfer photos. Moreover, this invention is providing the manufacturing method of the said polymeric toner.
- the present invention is a binder resin; And toner particles comprising pigments, pigment stabilizers, charge control agents and wax particles dispersed in the binder resin, the toner comprising one or more wax particles within 15% of the longest diameter of the toner particles from the surface of the toner particles; A polymerized toner is provided in which the proportion of particles is 5 to 20% of the total toner particles.
- the present invention comprises the steps of forming an aqueous dispersion comprising a dispersant; Forming a monomer mixture comprising a monomer for a binder resin, a pigment, a pigment stabilizer, a charge control agent and a wax; And adding the monomer to the aqueous dispersion and forming toner particles through suspension polymerization, wherein the suspension polymerization is reacted at 50 to 70 ° C. for 8 to 12 hours; And it provides a method for producing a polymerized toner comprising the step of reacting for 30 minutes to 4 hours after raising the temperature to 80 to 100 ° C.
- a polymer toner and a method of manufacturing the same will be described in detail.
- binder resin binder resin
- toner particles comprising pigments, pigment stabilizers, charge control agents and wax particles dispersed in the binder resin, the toner comprising one or more wax particles within 15% of the longest diameter of the toner particles from the surface of the toner particles;
- a polymerized toner may be provided in which the proportion of particles is 5 to 20% of the total number of toner particles.
- 'longest diameter means the length of the longest of the straight lines passing through the center and connecting two points on the outermost part of the particles in the toner particles which are circular, spherical or similar polygons. Further, 'within 15% of the longest diameter of the toner particles from the surface of the toner particles,' means a region within 15% of the longest diameter on the surface of the toner particles.
- the longest diameter can be measured using a device such as a flow particle image analyzer (FPIA-1000, Tolyou Denshi K.K.).
- the ratio of toner particles including one or more wax particles within a length of 15% of the longest diameter on the surface of the toner particles can be obtained from the number of the toner particles and the total toner particles shown in the results of observation with an electron microscope.
- the present inventors control the suspension reaction temperature and time in the step of preparing the polymerized toner to control the toner particles containing one or more wax particles within 15% of the longest diameter of the toner particles, preferably within 10% of the toner particles from the surface of the toner particles.
- the ratio is 5 to 20% of the total toner particles, preferably 7 to 17%, excellent offset characteristics with high transfer efficiency are achieved. Confirmed that the implementation is completed the invention.
- the proportion of the toner particles including one or more wax particles within 15% of the longest diameter from the surface of the toner particles is in the range of less than 5% or more than 20% It is confirmed that the efficiency is lowered or the offset characteristic is lowered.
- the proportion of toner particles including one or more wax particles within 15% of the longest diameter from the surface of the toner particles is 5% to 20%, an appropriate amount of wax may be located on the surface of the toner so that The fusion offset phenomenon can be prevented, and the problem of deterioration of the chargeability of the toner surface caused as the excess wax is located on the toner surface can also be prevented, thereby achieving high transfer efficiency.
- the proportion of the toner particles including one or more wax particles within 15% of the longest diameter of the toner particles is less than 5% of the toner particles, the wax that imposes releasability during the fixing process may not be sufficiently exposed. If not, offset characteristics may be degraded.
- the ratio of the toner particles is more than 20%, a problem may occur in that the transfer efficiency is lowered by lowering the chargeability of the toner particles.
- the toner particles are binder resin; And it may include a pigment, a pigment stabilizer, a charge control agent and wax particles dispersed in the binder resin. Then, the toner particles the binder resin is 20 to 90 parts by weight 0 /., The pigment 1 to 20 parts by weight 0/0, the wax particles 2 to 30 parts by weight 0/0, the charge control agent of 0.1 to 20% by weight and the pigment stabilizer And 0.1 to 20 weight percent.
- the binder resin may include a polymer of a styrene monomer, an acrylate monomer, a methacrylate monomer, a diene monomer, an acidic olefin monomer, a basic olefin monomer, or a mixture thereof.
- the present invention is not limited thereto, and various monomers known to be usable for the formation of the toner manufactured by the polymerization method may be used without particular limitation, and polymers or copolymers of the binder resin of the polymerized toner may be formed from such monomers. have.
- the binder resin (a) a styrene monomer; And (b) a copolymer of at least one monomer selected from the group consisting of an acrylate monomer, a methacrylate monomer and a diene monomer, wherein the copolymer is a monomer of (a) and (b) To 100 parts by weight of the sum of the monomers, 30 to 95 parts by weight of the monomer of (a) and 5 to 70 parts by weight of the monomer of (b) may be co-condensed.
- the copolymer may be a copolymer of one or more monomers selected from the group consisting of (c) an acidic olefinic monomer and a basic olefinic monomer together with the monomer of (a) and the monomer of (b).
- the monomer of (c) may be copolymerized to 0.1 to 30 parts by weight based on 100 parts by weight of the combined monomers of (a) and (b).
- Styrene-based monomers for the formation of the binder resin include styrene, monochlorostyrene, methyl styrene or dimethyl styrene, etc.
- the acrylate monomers are methyl acrylate, ethyl acrylate, n-butyl acrylate, isobutyl Acrylate, dodecyl acrylate or 2-ethylnuclear acrylate.
- the methacrylate monomers include methyl methacrylate, ethyl methacrylate, n -butyl methacrylate, isobutyl methacrylate, dodecyl methacrylate or 2-ethylnuclear methacrylate, and the like.
- the diene monomers include butadiene or isoprene.
- the acidic olefin monomer an ⁇ , ⁇ -ethylene compound having a carboxyl group may be used, and the basic olefin monomer may be a methacrylic ester or methacrylic amide of an aliphatic alcohol having an amine group or a quaternary ammonium group.
- Vinyl amines, diallyl amines and ammonium salts thereof can be used.
- the pigments are metal powder pigments, metal water oxidized pigments, carbon pigments, sulfide pigments, chromium salt pigments, ferrocyanide pigments, azo pigments, acid dye pigments, basic dye pigments, and mordant dyes.
- waxes applied to the wax particles include petroleum refined waxes such as paraffin wax, microcrystalline wax or ceresin wax; Natural waxes such as carnuba wax; Or synthetic waxes or mixtures thereof such as polyester waxes, polyethylene waxes or polypropylene waxes.
- the charge control agent may include a cationic charge control agent, an anionic charge control agent or a combination thereof.
- the cationic charge control agent include nigrosine dyes, high aliphatic metal salts, alkoxy amines, chelates, quaternary ammonium salts, alkylamides, fluorine treatment activators, metal salts of naphthalene acid, and mixtures thereof.
- Charge control agents include chlorinated paraffins, chlorinated polyesters, polyesters containing acids, sulfonylamines of copper phthalocyanine, sulfonic acid groups or combinations thereof.
- a copolymer having a sulfonic acid group As the charge control agent. More preferably, a copolymer having a sulfonic acid group having a weight average molecular weight of 2,000 to 200,000 may be used, and even more preferably, the acid value is 1-. Copolymers having sulfonic acid groups with 40 mg KOH / g and glass transition temperatures of 30 to 120 ° C. can be used. If the acid value is less than 1, it does not act as a charge control agent, and if it is 40 or more, it affects the interfacial properties of the monomer mixture to deteriorate the polymerization stability.
- the glass transition temperature is less than 30 " C
- the low glass transition temperature of the electronic control agent exposed to the surface may cause friction-melting of the toner to the toner during printing, causing a blocking phenomenon, and above 120 ° C. If the toner surface is excessively hard, it is unfavorable for coating and fixing properties, and if the weight average molecular weight is less than 2,000, the surface concentration decreases due to high compatibility with the binder resin, thereby reducing the function of the charge control agent.
- the copolymer having sulfonic acid groups are styrene-acrylic copolymers having sulfonic acid groups , Styrene-methacryl-based copolymers having sulfonic acid groups or mixtures thereof, but are not limited thereto. It is not.
- the pigment stabilizer may be used a styrene-butadiene-styrene (SBS) copolymer having a weight average molecular weight of 2,000 to 200,000, preferably, Styrene content to butadiene content of the copolymer may be used in a weight ratio of 10-90: 90-10. If the content of styrene exceeds 90%, butadiene blocks are shortened, and the high compatibility with binder resin prevents them from becoming a stabilizer. If the content is less than 10%, they act as a stabilizer but the length of short styrene blocks There is a lack of control over pigment-to-pigment action.
- SBS styrene-butadiene-styrene
- the molecular weight when the molecular weight is less than 2,000, it has a high compatibility with the binder resin and does not function as a pigment. When the molecular weight is more than 200,000, the viscosity of the monomer mixture is too high to deteriorate dispersion stability and polymerization stability and ultimately widen the particle size distribution. .
- additives such as reaction initiator, crosslinking agent, lubricant, molecular weight adjusting agent or coupling agent may be further dispersed in the binder resin.
- the toner particles the initiator 0.01 to 5 parts by weight 0/0, preferably coming from 1 to 2 parts by weight 0/0;
- the crosslinking agent of 0.001 to 10 parts by weight 0/0;
- the molecular weight modifier may further comprise 0.001 to 8% by weight.
- an oil-soluble initiator and a water-soluble initiator can be used.
- Azo initiators such as azobisisobutyronitrile and azobisvaleronitrile
- Organic peroxides such as benzoyl peroxide and lauroyl peroxide
- a commonly used water-soluble initiator such as potassium persulfate and ammonium persulfate can be used, and one or two or more thereof may be used in combination.
- the crosslinking agent may be divinylbenzene, ethylene dimethacrylate, ethylene glycol dimethacrylate, diethylene glycol diacrylate, 1,6-nuxamethylene diacrylate, allyl methacrylate, 1,1,1-trimethyl.
- the molecular weight modifier may include t-dodecyl mercaptan, n-dodecyl mercaptan, n-octyl mercaptan, carbon tetrachloride, carbon tetrabromide or a combination thereof.
- the toner particles may further include an external additive such as silica, titanium dioxide or a combination thereof.
- an external additive such as silica, titanium dioxide or a combination thereof.
- Such external additives may be present in the form coated on the outermost part of the toner particles.
- the silica is preferably surface treated with a silane compound such as dimethyldichlorosilane, dimethylpolysiloxane, nuxamethyldisilazane, aminosilane, alkylsilane, or octamethylcyclotetrasiloxane.
- the titanium dioxide may be used alone or in combination with a stable rutile at high temperature or anatase structure at low temperature, and may have a particle size of 80 to 200 nm, preferably 100 to 150 nm. Can be applied.
- forming an aqueous dispersion comprising a dispersant; Forming a monomer mixture comprising a monomer for a binder resin, a pigment, a pigment stabilizer, a charge control agent and a wax; And adding the monomer to the aqueous dispersion and forming toner particles through suspension polymerization, wherein the suspension polymerization is reacted at 50 to 70 ° C. for 8 to 12 hours; And it may be provided a method for producing a polymerized toner comprising the step of reacting for 30 minutes to 4 hours after the temperature is raised to 80 to 100 ° C.
- the inventors have carried out the suspension polymerization reaction of the monomer mixture dispersed in the aqueous dispersion in the form of fine droplets through homogenization in the suspension polymerization process for 8 to 12 hours at 50 to 70 ° C, to 80 to 100 ° C.
- the proportion of the toner particles containing one or more wax particles within 15% of the longest diameter of the toner particles, preferably within 10% from the surface of the toner particles is increased.
- the invention was found to be adjustable to 5 to 20%, preferably 7 to 17% of the total toner particles.
- the method may include forming an aqueous dispersion including a dispersant, which may be formed by mixing the dispersant in water. And, in order to homogenize such an aqueous dispersion, a step of stirring or applying a shear force may be applied.
- the dispersant prevents agglomeration between particles such as monomers or pigments for binder resin present in the form of droplets in the aqueous medium, and allows the particles to be uniformly dispersed.
- the dispersant is uniformly adsorbed on the surface of the droplet serves to stabilize the droplet particles.
- such a dispersant may be solubilized by an acid or alkali treatment or hot water washing after completion of the polymerization reaction in an aqueous medium, and separated from toner particles.
- the dispersant includes an inorganic dispersant, an organic dispersant, an anionic surfactant or a combination thereof.
- the inorganic dispersant include calcium phosphate, hydrogen phosphate, dihydrogen phosphate, hydroxy apatite, magnesium phosphate, aluminum phosphate, zinc phosphate, calcium carbonate, magnesium carbonate, calcium hydroxide, magnesium hydroxide, aluminum hydroxide, Calcium metasilicate, calcium sulfate, barium sulfate, bentonite, silica, alumina or combinations thereof.
- water-soluble organic dispersant examples include polyvinyl alcohol, gelatin, methyl cellulose, methyl hydroxy propyl cellulose and ethyl cellulose. cellulose, carboxyl methyl cellulose and its sodium salt, polyacrylic acid and its salts, starch or a combination thereof.
- anionic surfactants include fatty acid salts, alkyl sulfate ester salts, alkylaryl sulfate ester salts, dialkyl sulfosuccinate salts, alkyl phosphate salts, and mixtures thereof.
- the dispersant used in the method of manufacturing the polymerized toner is not limited to the above-described example, and a dispersant known to be applicable to the production of the polymerized toner may be used without any particular limitation.
- the monomer mixture may be formed by mixing and dissolving the binder resin monomer, pigment, pigment stabilizer, charge control agent and wax, etc., and homogenizing or shearing for homogenization.
- binder resin monomer pigment, pigment stabilizer, charge control agent, and wax contained in the monomer mixture are as described above.
- the monomers common compound is resin monomer 20 to 90 weight 0/0, the pigment 1 to 20 parts by weight 0/0, the wax 2-30 parts by weight 0/0, the charge control agent of 0.1 to 20 parts by weight 0/0, and the binder It may comprise 1 to 20% by weight of the pigment stabilizer.
- toner particles may be formed by mixing the monomer mixture with the aqueous dispersion and suspending polymerization.
- the forming of the toner particles may include adding the monomer mixture to the aqueous dispersion; Applying shear force to the aqueous dispersion and the monomer mixture to homogenize the monomer mixture in droplet form to the aqueous dispersion; And suspension polymerizing the homogenized monomer mixture.
- the monomer mixture and the aqueous dispersion may be homogenized using a homogenizer.
- the monomer mixture may be uniformly dispersed in the form of fine water droplets (droplets) in the aqueous dispersion to form spherical toner particles of appropriate size.
- a homogenizer can be used to homogenize the solution by applying a shear force to the monomer mixture and the aqueous dispersion using a homer, specifically, to homogenize the aqueous dispersion using a homogenizer.
- the prepared monomer mixture can be homogenized at a speed of 5,000 rpm to 20,000 rpm, preferably 8,000 rpm to 17,000 rpm, so that the monomer mixture can be dispersed in fine droplet form in the aqueous dispersion.
- the manufacturing method of the polymerized toner comprises the steps of removing the dispersant; And drying the toner particles.
- Removing the dispersant may include adjusting to a pH suitable for dissolution of the dispersant.
- a water-soluble inorganic acid such as hydrochloric acid or nitric acid
- the pH is adjusted to 2 or less, preferably L5 or less, so that the dispersant can be dissolved in an aqueous solution and removed from the toner particles.
- the toner slurry containing less than 50% by weight of water may be obtained using a filtration apparatus after the pH is properly adjusted and stirred for at least 5 hours to further dissolve the dispersant.
- the step of removing the dispersant may be applied a separation step using a centrifugal separator.
- the dispersant may be more efficiently removed by repeating the removal of water using a filter device and the addition of excess distilled water several times.
- Drying the toner particles includes putting a toner cake from which the dispersant is removed into a vacuum oven and vacuum drying at room temperature.
- the present invention is not limited thereto, and a drying method known to be commonly used in the manufacturing step of the polymerized toner may be used without particular limitation.
- the method of manufacturing the polymerized toner may further include coating an external additive on the outside of the toner particles.
- an inorganic powder including a separate external additive for example, silica, titanium dioxide, or a combination thereof, may be coated on the surface of the toner particles, and the coating step may be performed using a Henschel mixer. After adding an external additive to toner particle, it can advance by the method of high speed stirring.
- the silica may be used without particular limitation as is known to be usable for the polymerized toner.
- the inorganic powder applicable in the coating step has been described above, and thus the detailed description thereof will be omitted.
- the forming of the monomer mixture may further include adding at least one additive selected from the group consisting of a reaction initiator, a crosslinking agent, a lubricant, a molecular weight adjusting agent, and a coupling agent.
- the monomers common compound is the banung initiator is 0.01 to 5% by weight (preferably 0.1 to 2.0 parts by weight 0 / o), a cross-linking agent 0.001 to 10 parts by weight 0/0 or the chain transfer agent from 0.001 to 8.000 wt. It may further include%.
- a polymerized toner and a method for producing the polymerized toner having excellent offset characteristics, high transfer efficiency and uniform image realization, and which can exhibit excellent performance in applications such as high speed copying and development of transfer photographs are provided. Is provided.
- Figure 1 shows the results of observing the TEM of the toner particles of Example 1.
- aqueous sodium phosphate solution After mixing 686 g of 0.1 M aqueous sodium phosphate solution and 100 g of 1 M calcium chloride in 500 g of water to prepare an aqueous dispersion in which calcium phosphate crystals were precipitated, the reaction mixture was heated to 70 ° C. and stirred for 20 minutes.
- the content of the phosphate in the aqueous dispersion is based on 100 parts by weight of the monomer mixture described below.
- SBS styrene-butadiene-styrene
- the monomer mixture is added to the aqueous dispersion, and a shear force is applied to the aqueous dispersion and the monomer mixture at a speed of 13,000 rpm with a homogenizer to disperse the monomer mixture in the form of fine droplets in the aqueous dispersion. And homogenized.
- the homogenized mixture was reacted at 60 ° C. for 10 hours while stirring at 200 rpm with a paddle type stirrer, and heated to 90 ° C. for further 3 hours to prepare a polymerized toner.
- Hydrochloric acid is added to the aqueous dispersion containing the polymerized toner to adjust the pH.
- the toner cake was put in a vacuum oven and vacuum dried at room temperature for 48 hours to prepare a polymerized toner core.
- the volume average particle diameter of the prepared polymerized toner core was 7 and the ratio (standard deviation) of the volume average particle number and the number average particle diameter was 1.26.
- the volume average particle diameter of the core was immediately determined by using a Coolter counter (multisizer 3, Beckman coolter). External additive coating
- a polymerized toner was prepared in the same manner as in 1. [Comparative Examples 1 to 4]
- Polymerized toner was prepared in the same manner as in Example 1, except that the reaction temperature was performed as in Table 1 below.
- the weight of the drum unit that can be separated from the supply unit is measured before printing and after printing to determine the amount of toner that is wasted without paper transfer.
- Amount of toner consumed (g) drum weight after printing 1,000 sheets-drum weight before printing 1,000 sheets
- the diameter (d) of the toner particles and the ratio of the toner particles containing one or more wax particles within 15% of the longest diameter of the toner particles from the surface of the toner particles were observed with a transmission electron microscope (TEM). Obtained from the results.
- TEM transmission electron microscope
- Example 1 10 3 20 95 ⁇ Example 2 10 1 10 96 O Example 3 10 2 15 95 ⁇ Example 4 10 0.7 7 96 O Comparative Example 1 10-2 96 X Comparative Example 2 10 10 40 80 ⁇ Comparative Example 3 10 5 27 85 ⁇ Comparative example 4 10 7 30 75
- the longest diameter of the toner particles As shown in Table 1, the transfer efficiency is improved when the ratio of the toner particles containing at least one wax within 15% of the longest diameter of the toner particles from the surface of the toner particles is 5 to 20% of all the toner particles. It was confirmed that glossiness and offset characteristics were also excellent.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Developing Agents For Electrophotography (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11744938A EP2541327A2 (en) | 2010-02-22 | 2011-02-22 | Polymerized toner and method for preparing same |
CN2011800203231A CN102859445A (zh) | 2010-02-22 | 2011-02-22 | 聚合调色剂及其制备方法 |
JP2012554899A JP5591959B2 (ja) | 2010-02-22 | 2011-02-22 | 重合トナー及びその製造方法 |
RU2012140449/05A RU2524943C2 (ru) | 2010-02-22 | 2011-02-22 | Полимерезированный тонер и способ для его получения |
US13/580,562 US20130059245A1 (en) | 2010-02-22 | 2011-02-22 | Polymerized toner and preparation method of the same |
Applications Claiming Priority (4)
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KR10-2010-0015895 | 2010-02-22 | ||
KR20100015895 | 2010-02-22 | ||
KR10-2011-0015028 | 2011-02-21 | ||
KR1020110015028A KR20110096502A (ko) | 2010-02-22 | 2011-02-21 | 중합 토너 및 이의 제조 방법 |
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WO2011102696A2 true WO2011102696A2 (ko) | 2011-08-25 |
WO2011102696A3 WO2011102696A3 (ko) | 2012-01-19 |
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PCT/KR2011/001153 WO2011102696A2 (ko) | 2010-02-22 | 2011-02-22 | 중합 토너 및 이의 제조 방법 |
Country Status (7)
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US (1) | US20130059245A1 (ko) |
EP (1) | EP2541327A2 (ko) |
JP (1) | JP5591959B2 (ko) |
KR (1) | KR20110096502A (ko) |
CN (1) | CN102859445A (ko) |
RU (1) | RU2524943C2 (ko) |
WO (1) | WO2011102696A2 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104011598A (zh) * | 2011-12-23 | 2014-08-27 | 株式会社Lg化学 | 聚合调色剂及其制造方法 |
CN104024953A (zh) * | 2011-12-27 | 2014-09-03 | 株式会社Lg化学 | 聚合调色剂及其制备方法 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013094899A1 (ko) * | 2011-12-23 | 2013-06-27 | 주식회사 엘지화학 | 중합 토너 및 이의 제조 방법 |
US9785065B2 (en) * | 2014-04-23 | 2017-10-10 | Ricoh Company, Ltd. | Toner, and method for manufacturing toner |
JP2016206387A (ja) * | 2015-04-22 | 2016-12-08 | コニカミノルタ株式会社 | 静電荷像現像用トナー |
CN106154776A (zh) * | 2015-05-14 | 2016-11-23 | 佳能株式会社 | 调色剂 |
WO2018035670A1 (zh) * | 2016-08-22 | 2018-03-01 | 苏州偲聚生物材料有限公司 | 能够提高检测灵敏度的固相载体及检测器件 |
WO2019065868A1 (ja) * | 2017-09-29 | 2019-04-04 | 日本ゼオン株式会社 | 静電荷像現像用トナー |
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SU652525A1 (ru) * | 1976-09-02 | 1979-03-15 | Специальное Конструкторское Бюро Оргтехники | Тонер дл сухого электрографического про вител |
US5306593A (en) * | 1993-04-02 | 1994-04-26 | Xerox Corporation | Suspension polymerized toner treated by starved feed monomer addition process |
JP3083034B2 (ja) * | 1993-12-20 | 2000-09-04 | キヤノン株式会社 | 静電荷像現像用現像剤及び画像形成方法 |
JP3308812B2 (ja) * | 1995-05-31 | 2002-07-29 | キヤノン株式会社 | 静電荷像現像用トナー及びその製造方法 |
US5916722A (en) * | 1998-02-05 | 1999-06-29 | Xerox Corporation | Toner compositions |
JP2000258946A (ja) * | 1999-03-11 | 2000-09-22 | Tomoegawa Paper Co Ltd | 電子写真用トナー |
JP2002072540A (ja) * | 2000-09-04 | 2002-03-12 | Canon Inc | 磁性トナー及びその製造方法 |
JP3977084B2 (ja) * | 2002-01-16 | 2007-09-19 | キヤノン株式会社 | カラートナーキット及び画像形成方法 |
JP4300036B2 (ja) * | 2002-08-26 | 2009-07-22 | 株式会社リコー | トナー及び画像形成装置 |
JP2004219764A (ja) * | 2003-01-15 | 2004-08-05 | Ricoh Co Ltd | 2成分現像剤及びそれを用いる画像形成方法 |
CN100367115C (zh) * | 2003-01-20 | 2008-02-06 | 株式会社理光 | 调色剂、显影剂、图像形成装置、彩色印刷色盒以及图像形成方法 |
JP4255846B2 (ja) * | 2003-01-20 | 2009-04-15 | 株式会社リコー | トナー、現像剤、画像形成装置、プロセスカートリッジ及び画像形成方法 |
JP4192702B2 (ja) * | 2003-06-30 | 2008-12-10 | 日本ゼオン株式会社 | 静電荷像現像用イエロートナー |
JP4152904B2 (ja) * | 2004-02-23 | 2008-09-17 | 株式会社リコー | 乾式トナー及び該トナーを用いた画像形成装置 |
KR100717932B1 (ko) * | 2004-11-08 | 2007-05-11 | 주식회사 엘지화학 | 중합토너 및 이의 제조방법 |
KR100867145B1 (ko) * | 2005-03-08 | 2008-11-06 | 주식회사 엘지화학 | 고대전성 및 우수한 대전안정성을 갖는 중합토너 및 이의 제조방법 |
-
2011
- 2011-02-21 KR KR1020110015028A patent/KR20110096502A/ko not_active Application Discontinuation
- 2011-02-22 RU RU2012140449/05A patent/RU2524943C2/ru active
- 2011-02-22 EP EP11744938A patent/EP2541327A2/en not_active Withdrawn
- 2011-02-22 US US13/580,562 patent/US20130059245A1/en not_active Abandoned
- 2011-02-22 WO PCT/KR2011/001153 patent/WO2011102696A2/ko active Application Filing
- 2011-02-22 JP JP2012554899A patent/JP5591959B2/ja active Active
- 2011-02-22 CN CN2011800203231A patent/CN102859445A/zh active Pending
Non-Patent Citations (1)
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104011598A (zh) * | 2011-12-23 | 2014-08-27 | 株式会社Lg化学 | 聚合调色剂及其制造方法 |
CN104024953A (zh) * | 2011-12-27 | 2014-09-03 | 株式会社Lg化学 | 聚合调色剂及其制备方法 |
JP2015506490A (ja) * | 2011-12-27 | 2015-03-02 | エルジー・ケム・リミテッド | 重合トナーおよびその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20130059245A1 (en) | 2013-03-07 |
RU2524943C2 (ru) | 2014-08-10 |
WO2011102696A3 (ko) | 2012-01-19 |
EP2541327A2 (en) | 2013-01-02 |
JP2013520703A (ja) | 2013-06-06 |
RU2012140449A (ru) | 2014-03-27 |
CN102859445A (zh) | 2013-01-02 |
JP5591959B2 (ja) | 2014-09-17 |
KR20110096502A (ko) | 2011-08-30 |
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