WO2013085163A1 - Toner présentant des propriétés supérieures de fixation et de brillance - Google Patents

Toner présentant des propriétés supérieures de fixation et de brillance Download PDF

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WO2013085163A1
WO2013085163A1 PCT/KR2012/009730 KR2012009730W WO2013085163A1 WO 2013085163 A1 WO2013085163 A1 WO 2013085163A1 KR 2012009730 W KR2012009730 W KR 2012009730W WO 2013085163 A1 WO2013085163 A1 WO 2013085163A1
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toner
binder resin
weight
parts
wax
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PCT/KR2012/009730
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English (en)
Korean (ko)
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최대웅
박재범
김동우
권영재
최경환
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삼성정밀화학(주)
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Publication of WO2013085163A1 publication Critical patent/WO2013085163A1/fr

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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
    • G03G9/093—Encapsulated toner particles
    • G03G9/09307—Encapsulated toner particles specified by the shell material
    • G03G9/09314—Macromolecular compounds
    • 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
    • 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
    • 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
    • G03G9/093—Encapsulated toner particles
    • 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
    • G03G9/093—Encapsulated toner particles
    • G03G9/09307—Encapsulated toner particles specified by the shell material
    • G03G9/09314—Macromolecular compounds
    • G03G9/09321—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • G03G9/093—Encapsulated toner particles
    • G03G9/09307—Encapsulated toner particles specified by the shell material
    • G03G9/09335—Non-macromolecular organic compounds
    • 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
    • G03G9/093—Encapsulated toner particles
    • G03G9/0935—Encapsulated toner particles specified by the core material

Definitions

  • Toner starts. More specifically, toners excellent in both fixability and gloss are disclosed.
  • toner is prepared by adding a colorant, a charge control agent, a wax, or the like to a thermoplastic resin serving as a binder resin.
  • a charge control agent for imparting and maintaining chargeability to the toner a release agent for releasing action with the fixing unit of the image forming apparatus, and an external additive for imparting fluidity and developability to the toner or improving physical properties such as drum cleaning properties May be added to the toner.
  • pulverization there are physical methods such as pulverization and chemical methods such as suspension polymerization, emulsion aggregation, chemical milling and dispersion polymerization.
  • the conventional toner has a problem that at least one of fixability and glossiness is not satisfactory.
  • One embodiment of the present invention provides a toner excellent in both fixability and gloss.
  • a toner comprising a binder resin, a colorant and a wax, the energy calculated from the area of the melting peak (endothermic peak) shown in the differential scanning calorimeter (DSC) thermogram divided by the weight of the toner used in the DSC analysis ( ⁇ T area ) Toner that satisfies this formula is provided:
  • the ⁇ T area may satisfy the following equation:
  • the wax content may be 6.0 to 21.0 parts by weight based on 100 parts by weight of the binder resin.
  • the toner may include a core part including a binder resin, a colorant, and a wax; And a shell portion including a binder resin and surrounding the core portion.
  • the binder resin included in the toner may be included in a ratio of 70.0 to 74.0 parts by weight: 26.0 to 30.0 parts by weight of the core part and the shell part, respectively.
  • Each binder resin included in the core portion and the shell portion may be the same or different from each other.
  • the glass transition temperature of the binder resin included in the core portion may be lower than the glass transition temperature of the binder resin included in the shell portion.
  • the toner according to one embodiment of the present invention is excellent in both fixability and gloss.
  • FIG. 1 is a diagram showing a differential scanning calorimeter thermogram (DSC thermogram) of toners according to Examples 1, 2, 4 and Comparative Example 1.
  • DSC thermogram differential scanning calorimeter thermogram
  • toner may refer to one toner particle or context toner particle (ie, toner powder) depending on the context.
  • the toner according to one embodiment of the present invention is a toner including a binder resin, a colorant, and a wax, and an energy calculated from an area of a melting peak (endothermic peak) shown in a differential scanning calorimetry (DSC) thermogram (ie, Endotherm) divided by the weight of the toner used in the DSC analysis ( ⁇ T area ) satisfies the following equation:
  • ⁇ T area is less than 11 J / g, the glossiness of the toner deteriorates, and if the ⁇ T area exceeds 41.0 J / g, the fixability of the toner deteriorates.
  • the ⁇ T area may satisfy the following equation:
  • ⁇ T area is within the above range, a toner having a high fluidity and a high triboelectric charge can be obtained while both fixability and gloss are excellent.
  • the content of the wax may be 6.0 ⁇ 21.0 parts by weight based on 100 parts by weight of the total weight of the binder resin.
  • the content of the wax is within the above range, it is possible to obtain a toner that is excellent in both fixability and glossiness while maintaining high fluidity and frictional charge amount.
  • the toner may include a core part including a binder resin, a colorant, and a wax; And a shell portion including a binder resin and surrounding the core portion.
  • the present invention is not limited thereto, and the toner may have a single layer structure or a three layer structure including a binder resin, a colorant, and a wax.
  • the binder resin included in the toner may be included in a ratio of 70.0 to 74.0 parts by weight: 26.0 to 30.0 parts by weight, respectively, in the core part and the shell part.
  • the content ratio of each binder resin is within the above range, the colorant and the wax can be stably distributed only in the core portion of the toner, without moving between layers in the two layers.
  • Each binder resin included in the core portion and the shell portion may be the same or different from each other.
  • the glass transition temperature of the binder resin included in the core part is lower than the glass transition temperature of the binder resin included in the shell part. It is advantageous from the side.
  • the colorant may include a black pigment and a cyan pigment.
  • the content of the black pigment included in the core part may be 4.5 to 5.5 parts by weight based on 100 parts by weight of the total weight of the toner solids. When the content of the black pigment is within the above range, a toner image having a vivid black color may be realized.
  • the content of the cyan pigment contained in the core part may be 5 to 25 parts by weight based on 100 parts by weight of the black pigment contained in the core part.
  • the content ratio of the cyan pigment to the black pigment is within the range, it is possible to obtain a black toner having a blue color preferred by the consumer.
  • the black pigment may include at least one selected from the group consisting of carbon black, charcoal black, ebony, ivory black, and onyx.
  • carbon black may be exemplified by the following commercially available products: REGAL 400, 660, 330R, 300, SRF-S, STERLING SO, V, NS, R manufactured by Cabot, USA; RAVEN H20, MT-P, 410, 420, 430, 450, 500, 760, 780, 1000, 1035, 1060, 1080, manufactured by Columbia, Japan; # 5B, # 10B, # 40, 2400B, MA-100, etc., manufactured by Mitsubishi Chemical Corporation of Japan. In addition, these carbon blacks may be used alone or in combination of two or more thereof.
  • cyan pigment As said cyan pigment, C.I. Pigment blue 2, 3, 15, 16, 17; C.I. Bat blue 6; C.I. Acid blue 45; ECB303 (manufactured by Daeil Chemical Co., Ltd.) may be used. In addition, these cyan pigments may be used alone or in combination of two or more.
  • the manufacturing method of the toner may include adding a binder resin dispersion, a colorant dispersion, a wax dispersion, and a flocculant to a reactor, and then heating the reactor contents first to form a toner core portion; Adding a binder resin dispersion to the reactor contents containing the toner core part to surround the toner core part and form a shell part including the binder resin; And heating the reactor contents, which have undergone the shell forming step, to a second temperature to obtain united toner particles.
  • the present invention is not limited thereto, and the manufacturing method of the toner may have various configurations according to the purpose of use of the toner (or the structure of the toner).
  • Each of the above steps may be performed in one reactor, but the present invention is not limited thereto, and one or more of the four steps and two or more steps may be divided into two or more reactors.
  • the reactor may comprise a stirrer, a heating means (eg a heater), a pressurizing means and / or a decompression means (eg a vacuum pipe and a vacuum pump).
  • the binder resin dispersion, the colorant dispersion, and the wax dispersion may be prepared by the same or similar method as the latex dispersion, the colorant dispersion and the wax dispersion disclosed in Korea Patent Publication No. 2010-0048071, respectively.
  • Korean Patent Publication No. 2010-0048071 is incorporated herein in its entirety by reference.
  • the binder resin dispersion, the colorant dispersion and the wax dispersion may be prepared in the same or similar manner to the polyester resin dispersion, the colorant dispersion and the wax dispersion disclosed in Korea Patent Publication No. 2010-0115148, respectively. .
  • Korean Patent Publication No. 2010-0115148 is incorporated herein in its entirety by reference.
  • the weight average molecular weight of the binder resin used to prepare the binder resin dispersion may be 6,000 to 130,000.
  • weight average molecular weight of the binder resin is less than 6,000, it may adversely affect the storage and fixing properties of the toner, and when it exceeds 130,000, it may adversely affect the fixing property.
  • the peak peak position (MP) measured by gel permeation chromatography may be 5,000 to 100,000.
  • the peak molecular weight (Mp) in gel permeation chromatography (GPC) means the molecular weight calculated
  • the peak value of an elution curve means the maximum value of an elution curve, and when two or more said maximum values exist, it means the maximum value among them.
  • a solvent for dissolving tetrahydrofuran (THF) or a binder resin for example, chloroform, or the like may be used.
  • the glass transition temperature of the binder resin may be 40 to 80 °C, for example, 50 to 75 °C. If the binder resin has a glass transition temperature of 40 ° C. or higher, the toner formed by using the binder resin particles has no problem in storage stability. If the temperature is 80 ° C. or lower, hot offset is unlikely to occur even in color printing.
  • the colorant dispersion is a black pigment dispersion; Cyan pigment dispersions; And / or a dispersion including both black pigment and cyan pigment.
  • the wax used to prepare the wax dispersion may be a known wax.
  • natural wax such as carnauba wax and rice wax
  • Synthetic waxes such as polypropylene wax and polyethylene wax
  • Petroleum waxes such as montan wax
  • Alcohol waxes And ester waxes
  • the said wax may be used individually by 1 type, and 2 or more types may be used together.
  • the flocculant may be added to the shell portion forming step as well as the core portion forming step.
  • a flocculant NaCl, KCl or PSI (Poly Silicato Iron) may be used.
  • the content of the black pigment used in the core portion forming step may be 4.5 to 5.5 parts by weight based on 100 parts by weight of the total weight of solids used to prepare the toner.
  • the content of the cyan pigment added to the shell portion forming step may be 5 to 25 parts by weight based on 100 parts by weight of the black pigment used in the core portion forming step.
  • the first elevated temperature may be carried out to a temperature 4 ⁇ 20 °C lower than the glass transition temperature (Tg) of the binder resin added to the core portion forming step. If the temperature at the first temperature rise is within the above range (Tg minus (-) 4 ⁇ 20 °C), even aggregation occurs for each particle.
  • Tg glass transition temperature
  • the agglomeration may proceed until the particle size of the toner is 6.0 to 7.0 mu m.
  • the second temperature increase may be carried out to a temperature 10 ⁇ 40 °C higher than the glass transition temperature (Tg) of the binder resin added to the shell portion.
  • Tg glass transition temperature
  • the consolidation may proceed until the particle size of the toner is 6.5 to 8.0 ⁇ m, whereby toner particles having substantially uniform particle sizes and shapes can be obtained.
  • the binder resin used in each step may be the same or different from each other.
  • the glass transition temperature of the binder resin added to the core part forming step may be lower than the glass transition temperature of the binder resin added to the shell part forming step.
  • the binder resin added to the manufacturing method of the toner may be added in a ratio of 70.0 to 74.0 parts by weight: 26.0 to 30.0 parts by weight in the core part forming step and the shell part forming step, respectively.
  • the content ratio of the binder resin used in each step is within the above range, it is possible to prevent the colorant and wax from being distributed to the shell portion in the manufactured toner.
  • the manufacturing method of the toner further includes washing and drying the toner particles obtained in the uniting process with water.
  • the reactor contents containing toner particles are cooled to room temperature, filtered, the filtrate is removed, and then the toner particles are washed with water.
  • Pure water having a conductivity of 5 uS / cm or less may be used for the washing, and the washing may be performed until the conductivity of the filtrate washing the toner is 10 uS / cm or less.
  • the washing of the toner with pure water may be carried out batchwise or continuously.
  • the cleaning of the toner using pure water may be performed to remove unnecessary components other than the toner component, such as impurities that may affect the chargeability of the toner and unnecessary coagulants not involved in aggregation.
  • the toner obtained after the washing step may be dried using a fluidized bed dryer, an airflow dryer, a flash jet dryer, or the like.
  • a desired external additive can be added to the toner obtained by drying.
  • the external additive is to improve the fluidity of the toner or to control the charging characteristics.
  • Such external additives include large particle size silica (particle size ⁇ 40 nm), small particle size silica (7 nm ⁇ particle size ⁇ 30 nm), and titanium dioxide (particle size ⁇ 7 nm).
  • Polymer beads or mixtures of two or more thereof can be used.
  • a 30-liter reactor with a stirrer, thermometer and condenser was installed in the oil bath. 6,600 parts by weight and 32 parts by weight of distilled water and a surfactant (Dowfax 2A1) were added to the reactor thus installed, and the reactor temperature was increased to 75 ° C. and stirred at a stirring speed of 100 rpm.
  • the glass transition temperature (Tg) of the binder resin contained in the latex dispersion for the core was measured using a differential scanning calorimeter (DSC), and the temperature was 57 ° C.
  • the weight average molecular weight of the binder resin was measured by gel permeation chromatography (GPC) using a polystyrene reference sample. As a result, the weight average molecular weight was 45,000.
  • a latex dispersion for shell was prepared in the same manner as in Production Example 1-1, except that 530 parts by weight of polyethylene glycol ethyl ether methacrylate was used as the macromonomer and 188 parts by weight of 1-dodecanethiol was used as the chain transfer agent.
  • Tg glass transition temperature
  • Tg weight average molecular weight of the binder resin in the said latex dispersion for shells measured by the method similar to manufacture example 3-1 were 65 degreeC and 70,000, respectively.
  • the reactor contents were then subjected to high pressure dispersion at a pressure of 1,500 bar using an Ultimaizer system (Amstec Ltd., Model HJP25030).
  • a black pigment dispersion containing black pigment particles dispersed in nano size having a volume average particle diameter (D50 (v)) of 150 nm was obtained.
  • a cyan pigment dispersion was obtained in the same manner as in Preparation Example 2-1, except that cyan pigment (ECB303, manufactured by Daeil Jeonghwa Co., Ltd.) was used instead of black pigment (Regal 330 R, manufactured by Cabot).
  • the particle size of the dispersed wax particles was measured using Microtrac 252 from Microtrac Inc. and the D50 (v) was 250 nm.
  • the temperature of the reactor was raised to 51 ° C., followed by stirring at 150 rpm, and the aggregation continued until the average particle diameter of the toner particles became 6.9 ⁇ m (measured using a Coulter multisizer manufactured by Beckman Coulter).
  • the latex dispersion for shell prepared in Preparation Example 1-2 was added over about 10 minutes by the amount shown in Table 1 below. Thereafter, stirring was continued at a speed of 100 rpm until the average particle size of the toner particles became 7.0 ⁇ m (measured using a Beckman Coulter Coulter multisizer), and then 4 wt% aqueous sodium hydroxide solution was added to the reactor to pH It was stirred at a speed of 100 rpm until it became 7.
  • the temperature of the reactor was raised to 96 ° C. while maintaining the stirring speed so as toner particles were coalesced.
  • the temperature of the reactor was cooled to 40 ° C, and the pH of the reactor was adjusted to 9.0.
  • the toner particles were separated using nylon mesh (pore size: 16 ⁇ m), and the separated toner particles were washed four times with distilled water, followed by mixing 1.88 wt% of nitric acid solution with distilled water. After washing again with the mixed solution, and then four times with distilled water to remove all the surfactant and the like. Thereafter, the washed toner particles were dried using an air flow drying system (SEISHI, FJD-4B) to obtain dried toner particles.
  • SEISHI air flow drying system
  • Latex Dispersion for Core (g) Latex Dispersion for Shell (g) Wax dispersion (g) Black Pigment Dispersion (g) Cyan pigment dispersion (g) Coagulant Mixed Solution (g)
  • Example 1 9,578 3,717 1,262 1,712 352 4,242
  • Example 2 9,246 3,596 1,893 1,712 352 4,242
  • Example 3 8,914 3,475 2,523 1,712 352 4,242
  • Example 4 8,596 3,339 3,154 1,712 352 4,242
  • the circularity of the toner particles in Examples 1 to 6 and Comparative Examples 1 to 4 was measured using FPIA-3000 (manufactured by Sysmex, Japan).
  • pretreatment of the sample was performed by prefilling a 20 ml vial bottle with 15 ml of distilled water, and then adding 5-10 mg of the toner sample after external addition.
  • a surfactant Wako, Contaminon-N
  • the toner particles were dispersed by sonication for 30 minutes.
  • 7-10 ml of the pretreated sample was added to the sample inlet of the FPIA-3000, and then the circularity of the toner was measured, and 3000 particles were measured. The circularity average of the measured 3000 particles was recorded.
  • the circularity is automatically obtained from FPIA-3000 by the following equation.
  • Circularity 2 ⁇ (area ⁇ ⁇ ) 1/2 / perimeter
  • the area means the area of the projected toner
  • the perimeter means the circumferential length of the projected toner. This value can range from 0 to 1, the closer to 1, the spherical.
  • the particle size distribution (GSDp and GSDv) of the toner particles after externalization was measured by using an average particle size using a Multisizer TM 3 Coulter Counter ® of Beckman Coulter Inc.
  • the aperture is 100 ⁇ m
  • an appropriate amount of a surfactant (Waco, Contaminon-N) is added to 50-100 ml of the electrolyte ISOTON-II (Beckman Coulter), and here
  • the sample was prepared by adding 10-15 mg of the measurement sample to the ultrasonic disperser for 5 minutes, and measuring the particle size distribution of 30,000 particles in the dispersion-treated measurement sample.
  • GSDp is a particle size distribution based on particle number, which means that the smaller the value, the narrower the particle size distribution.
  • D16p and D84p respectively measure the particle size of the toner particles to accumulate the total number of particles from the small particles. It means the particle diameter corresponding to 16% and 84% of the particle number.
  • GSDv is a particle size distribution based on volume, which means that the smaller the value, the narrower the particle size distribution.
  • D16v and D84v respectively measure the particle size of the toner particles to accumulate the volume from the small particles. It means a particle diameter corresponding to 16% and 84%.
  • the flowability of the toner after external addition was measured using a powder tester (manufactured by Hosokawa micron). Three sieves were used to measure the fluidity, and the size of the eyes (ie, mesh size) of each sieve was 53 ⁇ m, 45 ⁇ m, and 38 ⁇ m. The three sieves were stacked in the order of 38 ⁇ m sheaves, 45 ⁇ m sheaves and 53 ⁇ m sheaves from bottom to top. At the first measurement, 2 g of toner was weighed and placed on a 53 ⁇ m sieve to give vibration of dial 1 for 40 seconds. When the vibration for 40 seconds was completed, each of the three sieves was weighed to determine the amount of toner remaining on each sieve. Cohesiveness was calculated by the following Equation 4 after the measurement. The smaller the degree of aggregation, the better the fluidity.
  • Cohesion (%) ⁇ (Weight of Powder Remaining on Upper Sheave (53 ⁇ m Mesh)) / 2 ⁇ ⁇ 100 ⁇ (1/5) + ⁇ (Weight of Powder Remaining on Middle Sheave (45 ⁇ m Mesh) ) / 2 ⁇ ⁇ 100 ⁇ (3/5) + ⁇ (weight of powder remaining on lower sheave (38 ⁇ m mesh)) / 2 ⁇ ⁇ 100 ⁇ 1/5)
  • the triboelectric charge amount of the toner after external addition was measured using a q / m meter (Epping, Germany). 0.7 g of the externally added toner particles and 9.3 g of the carrier (100 ⁇ m, Nippon Imaging Society) prepared in each of the above Examples and Comparative Examples were added to a 100 mL bottle. Left for a while. Subsequently, the mixture was mixed at 96 rpm for 5 minutes using a Turbula mixer (WAB, Switzerland). After mixing, 0.1g of the sample was put in a measuring cell of q / m meter and scanned under 80ml / min and 1,000 voltage.
  • the DSC thermogram of the toner was obtained by using Jade DSC (Perkin elmer Co., Ltd.). Specifically, 9 mg of toner was put in an aluminum pan and pressed with a sampler to prepare a sample for analysis. Each sample was subjected to primary DSC analysis while raising the temperature at a rate of 10 ° C./min from 0 ° C. to 200 ° C., and then quenched, and then subjected to secondary DSC analysis at the same temperature as in the first DSC analysis.
  • the glass transition temperature (Tg) was obtained from the DSC thermogram obtained after completion of the analysis, and the energy calculated by the DSC software (Pyris version 9.01) from the area of the melting peak (endothermic peak) as shown in FIG.
  • the ⁇ T area was determined by dividing by the weight of the toner used for analysis (ie, 9 mg).
  • Fixability (%) [(OD after tape removal) / (OD before tape removal)] * 100
  • the toners prepared in Examples 1 to 6 were found to have high fixability and glossiness, but the toners prepared in Comparative Examples 1 to 4 had low fixability and glossiness. Appeared. On the other hand, the toners prepared in Comparative Examples 3 to 4 were found to have too high glossiness and too low fluidity compared to the toners prepared in Examples 1 to 6.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

La présente invention concerne un toner. Le toner de l'invention peut comprendre une résine de liaison, un agent colorant et une cire. Une valeur (ΔTsurface) divisant l'énergie calculée à partir de la surface d'un pic de fusion (pic endothermique) indiqué sur un thermogramme de calorimètre à balayage différentiel par le poids du toner peut satisfaire à la formule suivante : 11,0 ≤ ΔTsurface ≤ 41,0 [J/g].
PCT/KR2012/009730 2011-12-09 2012-11-16 Toner présentant des propriétés supérieures de fixation et de brillance WO2013085163A1 (fr)

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KR1020110132152A KR20130065336A (ko) 2011-12-09 2011-12-09 정착성 및 광택성이 우수한 토너
KR10-2011-0132152 2011-12-09

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080018967A (ko) * 2005-06-30 2008-02-28 캐논 가부시끼가이샤 토너 및 토너의 제조 방법
KR20080063645A (ko) * 2007-01-02 2008-07-07 삼성전자주식회사 혼성 토너 및 그의 제조방법
JP2008158252A (ja) * 2006-12-25 2008-07-10 Canon Inc トナー
KR20080108288A (ko) * 2006-03-13 2008-12-12 캐논 가부시끼가이샤 토너 및 토너의 제조 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080018967A (ko) * 2005-06-30 2008-02-28 캐논 가부시끼가이샤 토너 및 토너의 제조 방법
KR20080108288A (ko) * 2006-03-13 2008-12-12 캐논 가부시끼가이샤 토너 및 토너의 제조 방법
JP2008158252A (ja) * 2006-12-25 2008-07-10 Canon Inc トナー
KR20080063645A (ko) * 2007-01-02 2008-07-07 삼성전자주식회사 혼성 토너 및 그의 제조방법

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