CN104375397A - Porous color matching agent and preparation method thereof - Google Patents
Porous color matching agent and preparation method thereof Download PDFInfo
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- CN104375397A CN104375397A CN201410573046.2A CN201410573046A CN104375397A CN 104375397 A CN104375397 A CN 104375397A CN 201410573046 A CN201410573046 A CN 201410573046A CN 104375397 A CN104375397 A CN 104375397A
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Abstract
The invention relates to a porous color matching agent and a preparation method thereof, and solves the problems that the process is complicated, the period is long, and a produced porous color matching agent is poor in mechanical strength in an existing porous color matching agent. Porous color matching agent particles are prepared by adopting a multiple emulsion method. The preparation method comprises the steps of adding a pore generator and a pore supporting article in a first hydrophilic colloid solution, carrying out shear dispersing on the pore generator and the pore supporting article in an organic phase solution to form a water-in-oil type first turbid liquid, then carrying out the shear dispersing on the water-in-oil type first turbid liquid in a second hydrophilic colloid solution to obtain and oil-in-water-water-in-oil type second turbid liquid, and preparing the color matching agent of a porous structure by utilizing a limit polymerization process. The process is simple, the feasibility is high, and the production period is short. The produced porous color matching agent has an excellent porous structure, high-strength abrasion resistance and good mechanical strength, the strength requirement of the subsequent processing flow can be met, the produced color matching agent is unlikely to break, the quality of a printed image can be improved, the photographic fixing temperature and printing consumption of the color matching agent can be reduced, and the printing and copying page yield can be increased.
Description
Technical field
The present invention relates to a kind of printing and duplicating electrofax tinter and preparation method thereof.
Background technology
Toner is the crucial consumptive material needed for laser printing, digital copying, primarily of compositions such as resin, pigment, adjuvants." fusion method " that tradition prepares toner is through operations such as melting mixing, mechanical crushing, air-flow crushing, classifications by resin, colorant, charge adjusting agent, mould release etc., belong to Physical toner, there is the toner not easily color toner grain size of dispersed in resin, preparation and the inherent shortcoming such as shape homogeneity is poor, particle diameter is larger, cause toner printing, easy roll banding, resolution are low when duplicating, shade deviation, useless powder rate are higher, cannot meet day by day high-level printing, duplicating demand.
With chemical means such as " emulsion polymerization/co-coagulation methods " of company's exploitations such as Fuji Xerox, Konica-Minolta, by the adjustment of surfactant, shear rate, by the particle diameter and the shape that control flocculation, heat treatment process can control powder effectively, thus improve printing, the resolution of duplicating and color and luster, the number of other, non-spherical shapes toner be conducive on photoreceptor of toner-particle reclaims with clean.
Based on chemical toner manufacturing cost comparatively fusion method toner be doubled and redoubled, be necessary to reduce the amount that toner is applied to the electrophotographic processes in substrate.The image-region in the amount of toner all can be reduced at electrofax process porous toner-particle, briefly, the toner-particle of the porosity with 50% should only need the quality of half to complete identical imaging effect, simultaneously, complete fixing after can reduce toner on paper accumulation height, strengthen the amalgamation with paper, form thinner image, improve the impact of toner thickness on picture quality.In addition; the porous structure of toner reduces the fixing temperature of toner; be conducive to saving energy and reduce the cost; therefore; the toner-particle with high factor of porosity can reduce every page of cost; thus invent a kind of low ash, useless powder rate and the consumption that reduce toner, the novel process improving unit toner page output becomes a kind of demand.The application of porous toner provides one and reduces printing cost, improves the practical approach of print quality.
But due to many character indexs of toner, as suitable glass transition temperature, cross-linking density and rheological, and the responsive fragility etc. of porous structure, be difficult to the satisfactory porous structure toner-particle of preparation.Adopt limited coalescence polymerization to become porosity high, but porous structure is too fragile, frangible in following process process; Adopt silicone oil-isopropyl alcohol extraction technology, become porosity low, and the slow poor efficiency of extraction process.
To sum up, the porous structure toner sensitivity that prior art obtains is frangible, and do not possess suitable machining intensity, in follow-up process procedure, have certain breakage, this is the main cause of the wideless application of existing porous structure toner.
Summary of the invention
The object of the invention is to solve the problems of the technologies described above, provide a kind of technique simple, control easy, the toner porosity obtained is high, physical strength is high, the preparation method of non-fragile porous toner.
Another object of the present invention is the porous toner in order to provide a kind of above-mentioned preparation method to obtain.
The inventive method comprises the following steps:
One, hole generation thing and hole stilt are scattered in deionized water and make the first hydrophilic colloid solution;
Two, resin, wax and colorant dispersing and dissolving are made organic phase solution in organism solvent;
Three, the first hydrophilic colloid solution shear is scattered in described organic phase solvent and forms water in oil first suspension;
Four, hydrophilic colloid stabilizing agent is scattered in deionized water and prepares the second hydrophilic colloid solution, the first suspension is sheared and is scattered in the second suspension forming oil-in-water-Bao Shui in described second hydrophilic colloid solution;
Five, evaporation of organic solvent and water from described second suspension, and obtain the toner with porous structure after further drying.
In described step one, described hole generation thing is natural polymer or the synthetic polymer with water-soluble or water-swellable.
In described step one, described hole stilt is silicasol.
In described step one, the mass ratio that the addition of described hole generation thing accounts for the first hydrophilic colloid solution is 1%-10%, and preferred proportion is 3%-5%.; The addition of described hole stilt accounts for the first hydrophilic colloid solution quality than being 1%-5%, and preferred proportion is 3%-4%.
In described step 3, the mixing ratio of the first hydrophilic colloid solution and organic phase solution is between 1:3 to 1:4.
In described step 4, described hydrophilic colloid stabilizing agent can be selected from silicasol, xanthans, gelatin, pure glue etc. or its potpourri.
In described step 4, the addition of described hydrophilic colloid stabilizing agent accounts for the 0.2%-2% of described second hydrophilic colloid solution gross mass.
Described first suspension is 1:1.5-2 with the mixing quality ratio of described second hydrophilic colloid solution.
In described step 5, described evaporation control baking temperature is 35-40 DEG C, and pressure is-0.7MPA to-0.9MPA, maintains 24h, and mensuration moisture content is residual is less than 0.5%.
The porosity of the toner of described porous structure is 20%-90%, and preferable porosity is at 30%-60%.
For the easy crisp problem easily split of porous structure toner, the existing preparation method of inventor improves, and in step one, hole generation thing and hole stilt is scattered in deionized water and makes the first hydrophilic colloid solution; By adding hole stilt, to improve the intensity of finished product, mesoporosity of the present invention stilt particularly preferably adopts the silicasol of nanometer grade silica (preferable particle size is 10-20nm), the colloidal silica solution that described silicasol can evenly diffuse to form in water, there is following characteristics: (1) silica sol particle is trickle, there is sizable specific surface area, the water white transparency of particle own, do not affect by the color of toner-particle; (2) viscosity of silicon sol solution is lower, and when carrying out moisture evaporation, colloidal particle can be attached to body surface securely, form silica between particle to combine, thus improve the intensity of porous toner-particle, under the prerequisite not affecting toner use, effectively can improve the space firmness of gap structure, control aperture and the number at particle pore, finally obtain not crisp, the stable porous structure particle not easily broken, is conducive to the preparation of porous structure toner, processing, transport and use.The addition of described hole stilt should control, in 1% to 5% scope, exceed ratio, carbon dust hardness is higher, be unfavorable for the fixing of toner, even can produce hardware wear problem, lower than ratio, carbon dust is partially soft, in the subsequent machining technology and use link of carbon dust, easy fragmentation, produces granule ink powder, causes flying powder phenomenon and occurs.
The selection of described hole generation thing is required to meet following condition: can dissolve in water, negative effect is not had in multiple emulsion process, and when they are being used as the melt rheology of the particle that electrophotographic toner obtains without negative effect, its porous structure in the triboelectric processes of toner substantially without negative effect.In the present invention, suitable hole generation thing can be selected from natural polymer or the synthetic polymer of the water-soluble or water-swellable comprising naturally occurring and synthesis, natural polymer comprises cellulose derivative, and such as carboxymethyl cellulose (CMC) is also referred to as sodium carboxymethyl cellulose; Gelatin and gelatine derivative, such as acetylated gelatin, phthalate gelatin etc.; And protein and protein derivatives.Synthetic polymer comprises poly-(vinyl alcohol), poly-(vinyl lactam), acrylamide polymer, Pioloform, polyvinyl acetal, the polyvinyl acetate of hydrolysis, polyamide, polyvinyl pyridine, methacrylamide copolymer, water-soluble microgel or polyelectrolyte.
The addition of described hole generation thing controls 1% to 10%, too much can cause the abnormity of toner-particle, and surface pore is too much, is unfavorable for the processing of subsequent technique link, causes carried charge poor stability; Very few, toner-particle porosity is on the low side, causes toner-particle really up to the mark, and effectively cannot reduce the consumption printing link ink powder, improves page productive rate
Produce thing and hole stilt by adding hole, the porosity of porous correctives can be made to control between 20%-90%, and consider optimum performance problem, preferable porosity is between 30% to 50%.Described first hydrophilic colloid solution pH value preferably to control at 4-6 to regulate the osmotic pressure of hydrocolloid, impels the first suspension to keep stable, forms second suspension of oil-in-water-Bao Shui after being beneficial to follow-up homogeneous.
In step 2, the emulsion polymerization carbon dust of the addition reference prior art of described colorant, wax and resin, the methods such as suspension polymerization carbon dust, are not described further at this.The organic solvent phase and the water that are dissolved with colorant, wax and resin are not miscible, namely immiscible with the first hydrophilic colloid solution, and this is the follow-up key preparing the dual suspension system of W/O/W.
Described organic solvent character be any suitable can dissolved colorants, wax and resin and solvent immiscible with water, such as, chloromethanes, methylene chloride, ethyl acetate, propyl acetate, vinyl chloride, butanone, methenyl choloride, phenixin, ethylene dichloride, trichloroethanes, toluene, dimethylbenzene, cyclohexanone, 2-nitropropane or its potpourri.Particularly preferably ethyl acetate, on the one hand its good dissolved colorants, wax and resin, simultaneously it again with water unmixing, and volatility is excellent, can easily from the drop of discontinuous phase by evaporation removing.
Described resin is the principal ingredient of toner, require it can dissolve in organic solvent and with water unmixing.Multipolymer, polyvinyl butyral, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, the ethene-allyl multipolymer of olefin homo or multipolymer, polyamide, acryl resin, cellulose derivative, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, polyvinyl resin, vinyl chloride and vinyl acetate can be listed, ethene-allylacetone multipolymer, ethene-allyl benzene multipolymer, ethylene-acrylic acid copolymer.Described olefin homo or multipolymer can list polypropylene, polyisobutylene, teflon or polychlorotrifluoroethylene etc.; Described polyamide can list polyhexamethylene adipamide, polyhexamethylene sebacamide or polycaprolactam etc.; Described acryl resin can list polymethylmethacrylate, polymethacrylate, polyethyl methacrylate or styrene methyl methacrylate; Described cellulose derivative can list cellulose acetate, cellulose acetate-butyrate, and cellulose propionate cellulose-acetate propionate or multipolymer ethyl cellulose etc., described polycondensation polymer can list polyester, polyurethane, polyamide, polycarbonate etc.
It is the higher fatty acid amides etc. such as natural series wax, oleamide, stearic amide such as the hydrocarbon waxes such as low molecular weight polyethylene wax, maleic anhydride modified Tissuemat E, low-molecular-weight polypropylene wax, low-molecular-weight copolyalkenamer wax, paraffin, oxidized paraffin wax, microcrystalline wax, behenic acid 20 diester, stearic acid octadecyl ester, Brazil wax, beeswax that the wax used in the present invention can be.Wax usage ratio of the present invention accounts for 1% to 15% of toner gross mass, and preferred wax ratio is between 3% to 10%.
The colorant used in the present invention can for inorganic pigment or organic pigment, organic dyestuff any one, also can be its combination.The cyan colorant that can enumerate has pigment blue 15: 3, pigment blue 15: 4 etc.; Yellow colorants has pigment yellow 74, pigment yellow 93, pigment yellow 94, pigment yellow 155, solvent yellow 16 2, pigment yellow 180, pigment yellow 185 etc.; Magenta colorant has pigment red 31, pigment red 122, paratonere 150, paratonere 184, paratonere 185, paratonere 57:1, paratonere 238, paratonere 269 etc.; Black colorant has carbon black, magnetic iron ore etc.Colorant usage ratio of the present invention accounts for 3% to 12% of toner gross mass, and preferred colorant proportion is between 5% to 8%.
Further, charge adjusting agent or other additive can also be added as required, with strengthen toner-particle in two Component System with carrier electrification by friction speed and carried charge.The kind of concrete additive and Adding Way, with reference to prior art, are not described further at this.
In step 3, the first hydrophilic colloid solution shear is scattered in described organic phase solvent and forms water in oil first suspension.Making the drop of aqueous phase be disperseed in oil phase and reduce size by shearing dispersion (also known as homogeneous), forming particle diameter stabilising system.
In step 4, the effect of described hydrophilic colloid stabilizing agent is the independence and the stability that maintain Water-In-Oil suspension drop, avoid the mutual fusion between drop, thus cause domain size distribution heterogeneity, preferred use silicasol, xanthans or gelatin, first the second hydrophilic colloid solution of preparation containing hydrophilic colloid stabilizing agent, by further homogeneous, control homogenizing time and efficiency, described first suspension is scattered in form the second suspending liquid of the water-based of oil-in-water-Bao Shui in the second hydrophilic colloid solution, and suspending liquid size controlling is between 5-9 μm.The pH value of the second hydrophilic colloid solution is preferably between 4-7.The addition of described hydrophilic colloid stabilizing agent account for the second hydrophilic colloid solution gross mass 0.2% to 2% between.System viscosity too much can be caused to increase, and be unfavorable for removing at subsequent technique, I haven't seen you for ages excessively causes suspension system unstable, and mutually merge between drop, domain size distribution broadens, and the concentration in the second hydrophilic colloid solution is preferably 0.5%.The preferred silicasol of hydrophilic colloid stabilizing agent, xanthans, gelatin, pure glue or its potpourri.In step 5, be remove the organic solvent for dissolving resin, wax, colorant etc., and the water in the first suspension in hydrophilic colloid.Those skilled in the art can select suitable method to remove in the prior art, remove solvent and most of water as adopted rotary evaporation or flash evaporator.After removal of solvents, porous toner-particle is in independent dispersion state, further vacuum drying, removes the first aqueous phase remained in hole, obtains product.
Beneficial effect:
The present invention adopts multiple emulsion method to prepare porous toner-particle, hole generation thing and hole stilt is added in the first hydrophilic colloid solution, make it in organic phase solution, shear dispersion and form water in oil first suspension, then the second suspending liquid (dual suspension system) being scattered in and obtaining oil-in-water-Bao Shui in the second hydrophilic colloid solution is sheared, utilize limited polymerization technique, prepare the toner with porous structure, present invention process be simple, control operation is simple, feasibility is high, with short production cycle.Produce the anti-wear performance that the porous toner obtained has excellent porous structure and high strength, mechanical strength properties is good, meet the requirement of strength in following process process, not easily embrittlement, the quality of printed drawings picture can be improved, reduce the fixing temperature of toner and print consumption, improving the page output of print copying.
Embodiment
Porous toner preparation example A1
In the beaker of 250ml, add 1 gram of carboxymethyl cellulose, 2 grams of silicasol (solid content 50%), 97 grams of deionized waters, stirring and form Carboxymethyl Cellulose-silica aqueous solution, is the first hydrophilic colloid solution.Separately get 500ml beaker and add 5 grams of palm waxs, 3 grams of charcoal blacks and 92 grams of fluoropolymer resins, then add 200 grams of ethyl acetate, heating water bath to 45 DEG C, and stirring and dissolving under rotating speed 200rpm condition is organic phase solution.Adopt IKA T50 by organic phase solution homogeneous under 4000rpm rotating speed, and by the first hydrophilic colloid solution, slowly join in organic phase solution, emulsifying 15min prepares Water-In-Oil first suspension.In the beaker of 2L, add 1000 grams of deionized waters and 2 grams of silicasol, stir formation second hydrophilic colloid solution.Adopt IKA T50 by the second hydrophilic colloid solution homogeneous under 2800rpm rotating speed, slowly add the first suspension, homogeneous 10min, form the second suspension of W/O/W.Adopt rotary evaporator, under 35 DEG C of reduced pressure, steam except the ethyl acetate in the second suspension, suspension is filtered, and spend deionized water for several times, be then placed in vacuum drying box dry, drying more than 24 hours under 35 DEG C of conditions, to remove the water comprised in toner-particle hole, obtain the porous toner A1 that porosity is 20%.
Porous toner preparation example A2
In the beaker of 250ml, add 10 grams of carboxymethyl cellulose, 10 grams of silicasol (solid content 50%), 80 grams of deionized waters, stirring and form Carboxymethyl Cellulose-silica aqueous solution, is the first hydrophilic colloid solution.Separately get 500ml beaker and add 13.4 grams of palm waxs, 16.7 grams of charcoal blacks and 137 grams of fluoropolymer resins, then add 333 grams of ethyl acetate, heating water bath to 45 DEG C, and stirring and dissolving under rotating speed 200rpm condition is organic phase solution.Adopt IKA T50 by organic phase solution homogeneous under 4000rpm rotating speed, and by the first hydrophilic colloid solution, slowly join in organic phase solution, emulsifying 15min prepares Water-In-Oil first suspension.2L beaker in add 1667 grams of deionized waters and 33.32 grams of silicasol, stir formation second hydrophilic colloid solution.Adopt IKA T50 by the second hydrophilic colloid solution homogeneous under 2800rpm rotating speed, slowly add the first suspension, homogeneous 10min, form the second suspension of W/O/W.Adopt rotary evaporator, under 35 DEG C of reduced pressure, steam except the ethyl acetate in the second suspension, suspension is filtered, and spend deionized water for several times, be then placed in vacuum drying box dry, drying more than 24 hours under 35 DEG C of conditions, to remove the water comprised in toner-particle hole, obtain the porous toner A2 that porosity is 70%.
Porous toner preparation example A3
In the beaker of 250ml, add 1 gram of carboxymethyl cellulose, 10 grams of silicasol (solid content 50%), 89 grams of deionized waters, stirring and form Carboxymethyl Cellulose-silica aqueous solution, is the first hydrophilic colloid solution.Separately get 500ml beaker and add 10.66 grams of palm waxs, 10.66 grams of charcoal blacks and 111.79 grams of fluoropolymer resins, then add 267 grams of ethyl acetate, heating water bath to 45 DEG C, and stirring and dissolving under rotating speed 200rpm condition is organic phase solution.Adopt IKA T50 by organic phase solution homogeneous under 4000rpm rotating speed, and by the first hydrophilic colloid solution, slowly join in organic phase solution, emulsifying 15min prepares water in oil first suspension.2L beaker in add 1333 grams of deionized waters and 6.67 grams of silicasol, stir formation second hydrophilic colloid solution.Adopt IKA T50 by the second hydrophilic colloid solution homogeneous under 2800rpm rotating speed, slowly add the first suspension, homogeneous 10min, form the second suspension of W/O/W.Adopt rotary evaporator, under 35 DEG C of reduced pressure, steam except the ethyl acetate in the second suspension, suspension is filtered, and spend deionized water for several times, be then placed in vacuum drying box dry, drying more than 24 hours under 35 DEG C of conditions, to remove the water comprised in toner-particle hole, obtain the porous toner A3 that porosity is 28%.
Porous toner preparation example A4
In the beaker of 250ml, add 10 grams of carboxymethyl cellulose, 2 grams of silicasol (solid content 50%), 88 grams of deionized waters, stirring and form Carboxymethyl Cellulose-silica aqueous solution, is the first hydrophilic colloid solution.Separately get 500ml beaker and add 10.66 grams of palm waxs, 10.66 grams of charcoal blacks and 111.79 grams of fluoropolymer resins, then add 267 grams of ethyl acetate, heating water bath to 45 DEG C, and stirring and dissolving under rotating speed 200rpm condition is organic phase solution.Adopt IKA T50 by organic phase solution homogeneous under 4000rpm rotating speed, and by the first hydrophilic colloid solution, slowly join in organic phase solution, emulsifying 15min prepares Water-In-Oil first suspension.2L beaker in add 1333 grams of deionized waters and 6.67 grams of silicasol, stir formation second hydrophilic colloid solution.Adopt IKA T50 by the second hydrophilic colloid solution homogeneous under 2800rpm rotating speed, slowly add the first suspension, homogeneous 10min, form the second suspension of W/O/W.Adopt rotary evaporator, under 35 DEG C of reduced pressure, steam except the ethyl acetate in the second suspension, suspension is filtered, and spend deionized water for several times, be then placed in vacuum drying box dry, drying more than 24 hours under 35 DEG C of conditions, to remove the water comprised in toner-particle hole, obtain the porous toner A4 that porosity is 62%.
Porous toner preparation example A5
In the beaker of 250ml, add 5 grams of carboxymethyl cellulose, 8 grams of silicasol (solid content 50%), 87 grams of deionized waters, stirring and form Carboxymethyl Cellulose-silica aqueous solution, is the first hydrophilic colloid solution.Separately get 500ml beaker and add 10.66 grams of palm waxs, 10.66 grams of charcoal blacks and 111.79 grams of fluoropolymer resins, then add 267 grams of ethyl acetate, heating water bath to 45 DEG C, and stirring and dissolving under rotating speed 200rpm condition is organic phase solution.Adopt IKA T50 by organic phase solution homogeneous under 4000rpm rotating speed, and by the first hydrophilic colloid solution, slowly join in organic phase solution, emulsifying 15min prepares Water-In-Oil first suspension.2L beaker in add 1333 grams of deionized waters and 6.67 grams of silicasol, stir formation second hydrophilic colloid solution.Adopt IKA T50 by the second hydrophilic colloid solution homogeneous under 2800rpm rotating speed, slowly add the first suspension, homogeneous 10min, form the second suspension of W/O/W.Adopt rotary evaporator, under 35 DEG C of reduced pressure, steam except the ethyl acetate in the second suspension, suspension is filtered, and spend deionized water for several times, be then placed in vacuum drying box dry, drying more than 24 hours under 35 DEG C of conditions, to remove the water comprised in toner-particle hole, obtain the porous toner A5 that porosity is 48%.
Comparative examples A 6 prepared by porous toner
In the beaker of 250ml, add 5 grams of carboxymethyl cellulose, 95 grams of deionized waters, stirring and form Carboxymethyl Cellulose-silica aqueous solution, is the first hydrophilic colloid solution.Separately get 500ml beaker and add 10.66 grams of palm waxs, 10.66 grams of charcoal blacks and 111.79 grams of fluoropolymer resins, then add 267 grams of ethyl acetate, heating water bath to 45 DEG C, and stirring and dissolving under rotating speed 200rpm condition is organic phase solution.Adopt IKA T50 by organic phase solution homogeneous under 4000rpm rotating speed, and by the first hydrophilic colloid solution, slowly join in organic phase solution, emulsifying 15min prepares Water-In-Oil first suspension.2L beaker in add 1333 grams of deionized waters and 6.67 grams of silicasol, stir formation second hydrophilic colloid solution.Adopt IKA T50 by the second hydrophilic colloid solution homogeneous under 2800rpm rotating speed, slowly add the first suspension, homogeneous 10min, form the second suspension of W/O/W.Adopt rotary evaporator, under 35 DEG C of reduced pressure, steam except the ethyl acetate in the second suspension, suspension is filtered, and spend deionized water for several times, be then placed in vacuum drying box dry, drying more than 24 hours under 35 DEG C of conditions, to remove the water comprised in toner-particle hole, obtain the porous toner A6 that porosity is 43%.
Comparative examples A 7 prepared by toner
Get 500ml beaker and add 10.66 grams of palm waxs, 10.66 grams of charcoal blacks and 111.79 grams of fluoropolymer resins, then add 267 grams of ethyl acetate, heating water bath to 45 DEG C, and stirring and dissolving under rotating speed 200rpm condition is organic phase solution.2L beaker in add 1333 grams of deionized waters and 6.67 grams of silicasol, stir and form hydrophilic colloid solution.Adopt IKAT50 by hydrophilic colloid solution homogeneous under 2800rpm rotating speed, slowly add organic phase solution and form oil-in-water suspension.Adopt rotary evaporator, under 35 DEG C of reduced pressure, steam except the ethyl acetate in suspension, suspension is filtered, and spend deionized water for several times, be then placed in vacuum drying box dry, drying more than 24 hours under 35 DEG C of conditions, to remove the water comprised in toner-particle hole, obtain the toner A7 of atresia.
above-mentioned experiment case study toner examination with computer Comparative result data are as following table:
From the evaluation effect of test data and real machine, the porous structure toner be prepared in the process of the present invention has good development density, stable carried charge, in print procedure, consumption of toner reduces Be very effective than non-porous structure toner, and the bottom ash in printing, useless powder rate are very low.
Claims (11)
1. a preparation method for porous toner, is characterized in that, comprises following step by step rapid:
One, hole generation thing and hole stilt are scattered in deionized water and make the first hydrophilic colloid solution;
Two, resin, wax and colorant dispersing and dissolving are made organic phase solution in organism solvent;
Three, the first hydrophilic colloid solution shear is scattered in described organic phase solvent and forms water in oil first suspension;
Four, hydrophilic colloid stabilizing agent is scattered in deionized water and prepares the second hydrophilic colloid solution, the first suspension is sheared and is scattered in the second suspension forming oil-in-water-Bao Shui in described second hydrophilic colloid solution;
Five, evaporation of organic solvent and water from described second suspension, and further obtain the toner with porous structure after washing, drying.
2. the preparation method of porous toner as claimed in claim 1, is characterized in that, in described step one, described hole generation thing is natural polymer or the synthetic polymer with water-soluble or water-swellable.
3. the preparation method of porous toner as claimed in claim 1, it is characterized in that, in described step one, described hole stilt is silicasol.
4. the preparation method of the porous toner as described in any one of claim 1-3, is characterized in that, in described step one, the mass ratio that the addition of described hole generation thing accounts for the first hydrophilic colloid solution is 1%-10%; The addition of described hole stilt accounts for the first hydrophilic colloid solution quality than being 1%-5%, and described first hydrophilic colloid solution pH value is 4.0.
5. the preparation method of porous toner as claimed in claim 1, it is characterized in that, in described step 3, the mixing ratio of the first hydrophilic colloid solution and organic phase solution is between 1:3 to 1:5.
6. the preparation method of porous toner as claimed in claim 1, it is characterized in that, in described step 4, described hydrophilic colloid stabilizing agent can be selected from silicasol, xanthans, gelatin, pure glue or its potpourri.
7. the preparation method of the porous toner as described in claim 1 or 6, is characterized in that, in described step 4, the addition of described hydrophilic colloid stabilizing agent accounts for the 0.2%-2% of the second hydrophilic colloid solution gross mass.
8. the preparation method of the porous toner as described in claim 1 or 6, is characterized in that, in described step 4, described first suspension is 1:1.5-2 with the mixing quality ratio of described second hydrophilic colloid solution.
9. the preparation method of porous toner as claimed in claim 1, it is characterized in that, in described step 5, control baking temperature is 35-40 DEG C, and pressure is that-0.7MPA to-0.9MPA maintains 24h, and mensuration moisture content is residual is less than mass percent 0.5%.
10. the preparation method of porous toner as claimed in claim 1, it is characterized in that, the porosity of the toner of described porous structure is 20%-90%.
11. 1 kinds of porous toners, is characterized in that, adopt any one of claim 1-10 preparation method to obtain.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529873A (en) * | 1993-04-20 | 1996-06-25 | Canon Kabushiki Kaisha | Toner for developing electrostatic images and process for producing toner |
| JP2000292981A (en) * | 1999-04-07 | 2000-10-20 | Sanyo Chem Ind Ltd | Dry toner |
| US20080176164A1 (en) * | 2007-01-18 | 2008-07-24 | Mridula Nair | Toner manufacturing method |
| CN102859446A (en) * | 2010-04-26 | 2013-01-02 | 伊斯曼柯达公司 | Toner containing metallic flakes |
| CN103930831A (en) * | 2011-09-13 | 2014-07-16 | 株式会社理光 | Method for manufacturing toner, toner and image forming method |
-
2014
- 2014-10-23 CN CN201410573046.2A patent/CN104375397B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529873A (en) * | 1993-04-20 | 1996-06-25 | Canon Kabushiki Kaisha | Toner for developing electrostatic images and process for producing toner |
| JP2000292981A (en) * | 1999-04-07 | 2000-10-20 | Sanyo Chem Ind Ltd | Dry toner |
| US20080176164A1 (en) * | 2007-01-18 | 2008-07-24 | Mridula Nair | Toner manufacturing method |
| CN102859446A (en) * | 2010-04-26 | 2013-01-02 | 伊斯曼柯达公司 | Toner containing metallic flakes |
| CN103930831A (en) * | 2011-09-13 | 2014-07-16 | 株式会社理光 | Method for manufacturing toner, toner and image forming method |
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