WO2005076085A1 - トナーの製造方法 - Google Patents
トナーの製造方法 Download PDFInfo
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- WO2005076085A1 WO2005076085A1 PCT/JP2004/001370 JP2004001370W WO2005076085A1 WO 2005076085 A1 WO2005076085 A1 WO 2005076085A1 JP 2004001370 W JP2004001370 W JP 2004001370W WO 2005076085 A1 WO2005076085 A1 WO 2005076085A1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
- B02C19/066—Jet mills of the jet-anvil type
-
- 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
- G03G9/0808—Preparation methods by dry mixing the toner components in solid or softened state
Definitions
- the present invention relates to a method for producing a toner used for developing a latent image formed in an electrophotographic method, an electrostatic recording method, an electrostatic printing method, and the like, a pulverizing member used in the method, and a collision-type air pulverizer.
- the present invention has a step of pulverizing a resin composition by a collision airflow pulverizer including a bench lily nozzle and a collision member arranged to face the bench lily nozzle.
- a collision airflow pulverizer including a bench lily nozzle and a collision member arranged to face the bench lily nozzle.
- FIG. 1 is a schematic cross-sectional view showing one embodiment of a collision type air current pulverizer used in the present invention.
- 1 is a bench lily nozzle
- 2 is a collision member
- 3 is an inlet
- 4 is a throat
- 5 is a diffuser
- 6 is an outlet
- 7 is a straight part.
- FIG. 2 is a schematic sectional view showing one embodiment of a Venturi nozzle suitably used in the present invention.
- reference numeral 3 denotes an inlet portion
- 4 denotes a throat portion
- 5 denotes a diffuser portion
- 6 denotes an outlet portion
- 7 denotes a straight portion.
- FIG. 3 is a schematic diagram showing a circle R i and a circle R 2 and a radius r 2 of the collision member in the present invention.
- FIG. 4 is a schematic view showing an example of an embodiment of a collision member used in the present invention.
- FIG. 5 is a schematic view showing an embodiment of an arrangement of a collision member used in the present invention in a collision direction of a crushed object.
- FIG. 6 is a schematic sectional view of a collision member having a conical collision surface used in Comparative Example 1. DETAILED DESCRIPTION OF THE INVENTION
- the present invention is directed to a method for reducing the generation of fine powder during the pulverization of a resin composition and efficiently producing a toner even with a small particle size toner, a pulverizing member used in the method, and a collision type airflow. It relates to a crusher.
- the present inventors have developed and designed the above prior art with the objective of performing primary pulverization using a collision plate and further performing multi-stage pulverization such as secondary pulverization using a wall surface. Therefore, the primary pulverization using a collision plate was mainly performed, and a pulverization method with high production efficiency was studied.
- the powder material collides with the entire collision surface, so that a high impact force can be obtained.
- the fine powder pulverized by the turbulence due to the back pressure is conveyed to the outlet.
- the powder concentration near the collision surface increases, and the grinding efficiency decreases.
- the conical or spherical impact members developed to improve this make it easier for the fine powder to flow, but the high impact force is concentrated at one point at the tip, so the primary grinding efficiency is extremely high. Low rate.
- the object of the present invention can be achieved by using a collision member having a shape that can increase the pulverization efficiency by bringing the collision point closer to a linear shape and efficiently release the back pressure.
- a collision member having a shape that can increase the pulverization efficiency by bringing the collision point closer to a linear shape and efficiently release the back pressure.
- the method for producing the toner of the present invention is not particularly limited as long as it has a pulverizing step using an impinging airflow pulverizer described later.
- a binder resin, a colorant, etc. The mixture obtained in (1) is melted and kneaded by a closed type kneader, a twin screw extruder, an open roll type kneader and the like, and cooled. And pulverization methods.
- the binder resin used in the present invention include polyester resins, vinyl resins such as styrene-acrylic resins, epoxy resins, polycarbonates, polyurethanes, and hybrid resins in which two or more resin components are partially chemically bonded.
- polyester and a hybrid resin having a polyester component and a vinyl resin component are preferable, and polyester is more preferable.
- the content of the polyester or the hybrid resin, or when both are used in combination, is preferably 50 to 100% by weight, more preferably 80 to 100% by weight in the binder resin. 0% by weight, particularly preferably 100% by weight.
- Polyester is a raw material monomer comprising an alcohol component having a dihydric or higher, preferably dihydric alcohol as a main component and a carboxylic acid component having a dihydric or higher, preferably a dihydric carboxylic acid compound as a main component. It is obtained by condensation polymerization.
- dihydric alcohols examples include polyoxypropylene (2.2) -2,2-bis (4-hydroxyphenyl) propane and polyoxyethylene (2.2) -2,2bis (4-hydroxyphenyl) ) Bisphenol A alkylene (C2 or C3) oxide adduct (average number of moles added: 1 to 10) such as propane, ethylene glycol, propylene glycol, 1,6-hexanediol, bisphenol A, hydrogenated Bisphenol A and the like.
- C2 or C3 oxide adduct average number of moles added: 1 to 10
- the content of the dihydric alcohol in the alcohol component is preferably 50 mol% or more, more preferably 80 to 100 mol%, and still more preferably 100 mol%.
- Examples of the trihydric or higher alcohol include sorbitol, 1,4-sorbitan, pendus erythritol, glycerol, and trimethylolpropane.
- Examples of the divalent carboxylic acid compound include dicarboxylic acids such as phthalic acid, iriphthalic acid, terephthalic acid, fumaric acid, and maleic acid; and succinyl substituted with an alkyl or alkenyl group having 1 to 20 carbon atoms. Acids, anhydrides and alkyl (C.sub.1-12) esters of these acids.
- the content of the divalent carboxylic acid compound is preferably 50 mol% or more in the carboxylic acid component. More preferably, it is preferably from 80 to 100 mol%, more preferably from 100 mol%.
- Examples of the trivalent or higher carboxylic acid compound include 1,2,4-benzenetricarboxylic acid (trimellitic acid), an acid anhydride thereof, and an alkyl (C 1 to C 12) ester.
- the content of the trivalent or higher-valent monomer is preferably 20 mol% or less of all the monomer monomers. Further, from the viewpoint of adjusting the molecular weight and the like, a monovalent raw material monomer may be used.
- Polyester is produced, for example, by condensation of an alcohol component and a carboxylic acid component in an inert gas atmosphere, if necessary, using an esterification catalyst at a temperature of 180 to 250 ° C. can do.
- Softening point of the polyester is preferably from 8 0 ⁇ 1 6 5 ° C, the glass transition point is preferably from 3 0 ⁇ 8 5 ° C, 5 0 ⁇ 70 D C is more preferable.
- the acid value of the polyester is preferably from 0.5 to 6 OmgKOHZg, and the hydroxyl value is preferably from 1 to 6 OmgKOHZg from the viewpoint of the dispersibility, chargeability and durability of the colorant.
- the hybrid resin may be obtained from two or more kinds of resins as raw materials, or may be obtained from raw materials of one kind of resin and another kind of resin. Alternatively, it may be obtained from a mixture of two or more kinds of resin monomers, but in order to obtain a hybrid resin efficiently, one obtained from a mixture of two or more kinds of resin monomers is used. Is preferred.
- the hybrid resin the raw material monomers of the two plastic resins, each of which has an independent reaction path, preferably, the raw material monomer of the polyester and the raw material monomer of the bur resin are mixed to carry out the two polymerization reactions.
- a resin obtained by the above method is preferable, and specifically, a hybrid resin described in Japanese Patent Application Laid-Open No. 10-07839 is preferable.
- the colorant used in the present invention all of the dyes and pigments used as toner colorants can be used, such as Ribon Bonf, 'Lac, Phthalocyanine Blue, Permanent Brown FG, Brilliant Firsts Liquoret, Pigment Green B, Rhodamine-1 B base, Solvent Red 49, Sonorent Red 146, Solvent Blue 35, Quinacridone, Richin 6B, Disazoero 1 etc., alone or in combination of two
- the above can be used as a mixture, and the toner produced in the present invention may be any of a black toner, a color toner, and a color toner.
- the amount of the coloring agent is preferably 1 to 40 parts by weight, more preferably 3 to 10 parts by weight, based on 100 parts by weight of the binder resin.
- a releasing agent in addition to the binder resin and the coloring agent, a releasing agent, a charge control agent, a conductivity adjusting agent, an extender, a skirt strong filler such as a fibrous substance, an antioxidant, Fluidity improvers, cleaning improvers, and additives such as magnetic powder may be used as appropriate.
- the release agent examples include natural ester-based waxes such as carnauba wax and rice paddles, synthetic waxes such as polypropylene wax, polyethylene eggs and Fischer-Tropsch, coal waxes such as montan wax, and alcohol-based waxes.
- the content of the release agent is preferably 2 to 30 parts by weight, more preferably 5 to 20 parts by weight, based on 100 parts by weight of the bound tree.
- the resin composition obtained by cooling may be directly supplied to a collision-type air pulverizer as a powder raw material. It is preferable to use a one-plex atomizer to pulverize the particles to a particle size of about 3 n ⁇ m or less, mix them with inorganic fine particles, and supply the resulting mixture to a collision-type airflow pulverizer.
- the particle size refers to the longest diameter of the particles.
- inorganic fine particles for example, inorganic oxides such as silica, alumina, tania, zirconia, tin oxide, and zinc oxide are preferable, and these can be used alone or in combination of two or more. Among these, toner particle size reduction and fluidity From the viewpoint of securing, Siri force is preferable.
- the silica is preferably hydrophobic silica that has been subjected to hydrophobic treatment from the viewpoint of environmental stability and the like.
- the hydrophobizing agent include hexamethyldisilazane, dimethyldichlorosilane, silicone oil, and methyltriethoxysilane. Among them, hexamethyldisilazane is preferred.
- the treatment amount of the hydrophobizing agent is preferably 1 T mg gZm 2 per surface area of the inorganic fine particles.
- the average particle diameter of the inorganic fine particles is preferably at least 0.01 m, and more preferably at least 0.05 m from the viewpoint of preventing embedding on the toner surface. In view of this, it is desirable that the distance be 1 m or less, preferably 0.1 lzm or less. Therefore, the average particle diameter of the inorganic fine particles is preferably from 0.001 to 1 ⁇ m, more preferably from 0.05 to 0.1 ⁇ m.
- the mixing of the resin composition and the inorganic fine particles can be performed by a mixer capable of high-speed stirring, such as a Henschel mixer or a super mixer.
- the amount of the inorganic fine particles is preferably 0.3 to 2 parts by weight, more preferably 0.5 to 1 part by weight, based on 100 parts by weight of the resin composition, from the viewpoint of preventing fusion.
- a collision type air flow pulverizer used in the present invention includes a bench lily nozzle 1 and a collision member 2 arranged so as to face the bench lily nozzle 1.
- an impingement airflow pulverizer comprising:
- the bench lily nozzle is a nozzle whose pipe diameter is relatively sharply reduced and then gradually expanded, and has a narrow and narrow shape at the center.
- the inlet 3, the throat 4, the diffuser 5, and the outlet Part 6 is composed in order.
- the compressed gas introduced into the Venturi nozzle 1 from the inlet 3 has the maximum velocity at the throat 4, and the high-speed airflow passes through the diffuser 5 and collides with the collision member.
- the mixture supplied into the nozzle from the supply port is transported on a high-speed airflow, and is finely pulverized by the large collision energy received by the collision member.
- the inner surface of the throat portion 4 is preferably an arc-shaped inner surface that is smoothly continuous from the inlet portion 3 to the diffuser portion 5 as shown in FIG.
- the compressed gas flows smoothly along the arcuate inner surface, energy loss in the throat section 4 and energy diffusion in the diffuser section 5 are very effectively suppressed, and the compressed gas flows into the nozzle.
- the supplied mixture can be made to collide with the collision member with a larger energy, and the production efficiency can be further improved in combination with the collision member of the present invention.
- the straight portion 7 on the outlet side of the diffuser portion 5 the diffusion of energy is further suppressed, so that the material to be ground can be finely ground more efficiently, which is preferable.
- the bench lily nozzle preferably used in the present invention includes, for example, a nozzle mounted on a pulverizer described in JP-A-2000-140675, which has a venturi nozzle.
- pulverizers include, for example, “collision type supersonic jet mill IDS 2” (manufactured by Nippon Pneumatic).
- the diameter of the outlet of the Venturi nozzle depends on the size of the collision type air crusher, etc., for example, about 10 to 15 mm is preferable in the above-mentioned “collision type supersonic jet tominole IDS 2 type J”.
- Examples of the compressed gas introduced into the bench lily nozzle include air, nitrogen gas, and the like.
- the pulverizing pressure at the collision member due to the high-speed airflow formed by the compressed gas varies depending on the average particle size of the target toner and the like, but is usually preferably about 0.1 to 0.7 MPa.
- the supply amount of the crushed material varies depending on the average particle diameter of the target toner and the like, but is preferably 0.5 to 10 kg / h, more preferably 1 to 5 kg / h, and about S kg gh. More preferred.
- the crushing force applied to the crushed object supplied to the impinging airflow crusher can be adjusted by the supply amount of the crushed object, the crushing pressure, and the like.
- the collision member in the present invention is a circle formed by three points: two arbitrary points on the outer peripheral line of the collision surface of the collision member, and one point on a line connecting the two points at the shortest distance on the collision surface. Among them, let the radius of the largest circle be r 1,
- the collision surface is a surface on which the resin composition is supposed to collide or flow, and is a surface that is at least seen from the bench lily nozzle direction. Further, the collision surface is preferably a surface that smoothly changes without a line on the collision surface connecting the three points forming the circle R 1 being bent.
- the surface shape of the collision surface is not particularly limited, but is preferably a smooth curved surface or a curved surface without irregularities.
- line A a line connecting the two points at the shortest distance on the collision surface.
- line A a line connecting the two points at the shortest distance on the collision surface.
- determine an arbitrary point on line A and find the radius of a circle passing through that point and two points on the outer line. Perform this operation for each point on line A to find the circle that gives the maximum radius.
- the circle giving the maximum radius is similarly determined, and the circle giving the maximum radius among all the circles is determined. This is a circle.
- the determination of this circle is to select a line or the line closest to the line in three dimensions from the lines on the collision surface.
- a circle R 2 is obtained. This is for obtaining a straight line or a line closest to the straight line when viewed three-dimensionally from among the lines on the collision surface orthogonal to the circle. It can be determined in the same way as for the circle Ri, except that the condition that it is perpendicular to the circle is added. In the case where the circle and the circle R 2 there are a plurality viewed three-dimensionally, to choose the closest to the center of gravity of the collision member.
- the determination of the circle and the circle R 2, n that the radius, is r 2 and the ratio determined.
- the ratio of r 2 and r 2 (r 2 / ri ) is a measure of the degree of curvature of the collision surface.
- a r! And r 2 are numerical values not "0", respectively, if the three points that form a circle is located on a straight line, the radius of the circle becomes oo.
- FIG. 3 shows a circle, a circle R 2, and a circle r 2 in a semi-cylindrical member having a collision surface whose bottom is a part of a perfect circle.
- R t in this case is ⁇ .
- r 2 / r! Is preferably 0.1 or less, more preferably 0.05 or less, still more preferably 0.001 or less, and particularly preferably 0.
- r 1 is ⁇ means that a line connecting the two points on the outer circumference forming the circle Ri on the collision surface at the shortest distance is a straight line, that is, the three points forming the circle Indicates that the line connecting is a straight line.
- the height of the maximum protrusions is preferably 0. 2 r 2 ⁇ 3 r 2, 0. 5 r 2 ⁇ l. 5 r 2 is more preferable.
- the linear distance between two points on the outer peripheral line that forms a circle is preferably 2 (! To 20 d, more preferably 5 d to 15 d, and even more preferably 7 d to 12 d.
- Examples of the collision member suitably used in the present invention include a collision member having at least a part of a columnar member having a perfect circle or a circle as a bottom surface as a collision surface.
- a cylindrical member may have a slight swelling at the center, but preferably does not have a swelling.
- the shape of the surfaces at both ends of the collision surface may be the same or different, but the surfaces at both ends are preferably the same shape, and moreover the same size. Is more preferable.
- the collision member having at least a part of the columnar member as a collision surface is not limited to the columnar member itself, but may be obtained by appropriately dividing the columnar member, for example, by dividing the columnar member perpendicular to the bottom surface. Things.
- the surface separating the columnar member may or may not include the central axis.
- a semi-cylindrical member is preferable from the viewpoint of preventing turbulence.
- FIGS. 4 (a) to 4 (h) show an example of the mouth protruding member which can be used in the present invention. In FIG.
- (a) to (c) are cylinders having a bottom surface of a part of a perfect circle or an ellipse and a collision member suitably used in the present invention.
- the surfaces at both ends of the collision surface may be perpendicular to the collision surface, may be inclined, or may have a smooth curve, but are preferably vertical surfaces.
- any material having wear resistance may be used, and examples thereof include a wear-resistant alloy, a wear-resistant surface-treated metal, and ceramic. Specific examples include, but are not particularly limited to, oxides such as stellite alloy, delchromium alloy, alumina, titania, and zirconia, stainless steel, aluminum, and iron.
- the collision member is arranged so as to face the outlet of the nozzle so that the line connecting the three points forming the circle, and more preferably, the most convex portion of the line is on the extension of the central axis of the Venturi nozzle. Is preferred.
- the closest distance between the outlet of the Venturi nozzle and the collision member is preferably such that the object to be crushed smoothly flows backward after colliding with the collision member, that is, 3 d to 10 d. If the outlet of the bench lily nozzle and the collision member are too close, the flow of the crushed object will be hindered, and if too far, the collision energy will decrease.
- the direction in which the collision member is disposed is not particularly limited.However, when the collision direction of the object to be ground is parallel to the horizontal plane, as shown in Fig. 5, the reduction in the grinding efficiency due to the accumulation of powder under the collision member is reduced. In order to prevent this, it is preferable to arrange them horizontally (a) rather than vertically (b).
- the arrows in FIG. 5 indicate the flow paths before and after the collision of the object to be ground.
- the collision member can be moved in the axial direction or rotated about the shaft to provide a new collision line.
- a pedestal in the shape of a prism, a cylinder, a cone, a quadrangular pyramid, or the like at a skirt portion of the present collision member so that the pulverized fine powder does not reach the back of the collision member.
- a classification step for removing fine powder and coarse powder is usually provided to adjust the particle size distribution of the toner.
- a toner having a sharp particle size distribution can be obtained only by the classification step of removing coarse powder, but the particle diameter is largely removed in the classification step.
- the coarse powder may be again supplied to a pulverizer together with another resin composition.
- the classification method is not particularly limited. A known classifier such as a type classifier can be used.
- the present invention produces a small particle size toner having a volume average particle size (D 4 ) of preferably 7 m or less, more preferably 2 to 7 zm, still more preferably 3 to 7 zm, and particularly preferably 4 to 6 / m.
- D 4 volume average particle size
- the measurement is performed using a differential scanning calorimeter (DSC 210, manufactured by Seiko Instruments Inc.) at a heating rate of 10 ° C.Z.
- DSC 210 differential scanning calorimeter
- the obtained melt-kneaded material was cooled and crushed to about 0.1 to 3 mm by a collision type air flow crusher “Rotoplex” (manufactured by Hoso Kamicron).
- Rotoplex collision type air flow crusher
- To 100 parts by weight of the crushed resin composition 0.5 parts by weight of hydrophobic silica "Aerosil R 972" (manufactured by Nippon Aerosil Co., Ltd., average particle diameter: 16 nm) was added, and the mixture was added to the mixture using a Henschel mixer. The mixture was stirred and mixed at 500 r / min for 1 minute.
- the resulting mixture is supplied at a supply rate of 3. O kg / h using a collision type supersonic jet mill IDS 2 (Nippon Pneumatic Co., Ltd., 9 mm diameter at the nozzle outlet).
- the impact member shown in Fig. 4 (a) (Material: ceramic, radius 1 Om m, height 4 Omm) is cut into two equal halves by cutting it at right angles to the bottom.
- the resulting semi-cylindrical Te, r 2 / r 1 o) was supplied using the replaced device (distance between the outlet of the bench lily nozzle and the collision surface of the collision member: 3 Omm), and pulverized at a pulverization pressure of 0.5 Mp.
- the volume average particle size of the obtained upper-class classified powder is 5.6 5.m, the content of particles of 3 ⁇ m or less is 27.29% by number, and the content of particles of 4 ⁇ m or less is 50.87% by number. Met.
- the upper-limit classified powder from which the coarse powder was removed was classified using an airflow classifier (DS type, manufactured by Nippon Pneumatic) to remove fine powder of 4 zm or less.
- DS type airflow classifier
- the volume average particle size of the classified powder was 6.0 m, the content of particles of 3 m or less was 0.3% by number, and the content of particles of 4 zm or less was 2.1% by number. .
- the yield based on the mixture before milling was 65%. Comparative Example 1
- the volume average particle size of the upper classified powder from which coarse powder of 8 im or more has been removed is 5.0 zm, the content of particles of 3 j or less is 40.9% by number, and the content of particles of 4 ⁇ m or less is 6 6.0 were many.
- the volume-average particle size of the lower-limit classified powder is 6.3 ⁇ m, the content of particles of 3 m or less is 0.4% by number, and the content of particles of 4 m or less is 2.0% by number, The yield based on the mixture before milling was 30%. From the above results, in Example 1, although the volume average particle size of the upper-limit classified powder from which coarse powder was removed was not much different from that of Comparative Example 1, the content of particles of 3 m or 4 zm or less was included. Even when the amount is small and the coarse and fine powders are finally removed to obtain a classified toner having the same volume average particle diameter, Example 1 maintains a higher yield than Comparative Example 1. You can see that there is.
- the toner obtained by the present invention is suitably used for developing a latent image formed in electrophotography, electrostatic recording, electrostatic printing, and the like.
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- Developing Agents For Electrophotography (AREA)
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Abstract
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US10/588,974 US7866581B2 (en) | 2004-02-10 | 2004-02-10 | Method of manufacturing toner |
PCT/JP2004/001370 WO2005076085A1 (ja) | 2004-02-10 | 2004-02-10 | トナーの製造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2004/001370 WO2005076085A1 (ja) | 2004-02-10 | 2004-02-10 | トナーの製造方法 |
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WO2005076085A1 true WO2005076085A1 (ja) | 2005-08-18 |
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PCT/JP2004/001370 WO2005076085A1 (ja) | 2004-02-10 | 2004-02-10 | トナーの製造方法 |
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US (1) | US7866581B2 (ja) |
WO (1) | WO2005076085A1 (ja) |
Families Citing this family (3)
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EP2670532B1 (en) * | 2011-02-04 | 2019-09-11 | Climax Molybdenum Company | Molybdenum disulfide powders |
WO2012117639A1 (ja) * | 2011-02-28 | 2012-09-07 | 日清エンジニアリング株式会社 | 粉体の粉砕方法 |
US9022307B2 (en) * | 2012-03-21 | 2015-05-05 | Ricoh Company, Ltd. | Pulverizer |
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JPH09206621A (ja) * | 1996-01-31 | 1997-08-12 | Ricoh Co Ltd | 衝突式気流粉砕機 |
JPH10202135A (ja) * | 1997-01-28 | 1998-08-04 | Minolta Co Ltd | 衝突式気流粉砕機およびこれを用いた電子写真用トナーの製造方法 |
JP2004073918A (ja) * | 2002-08-12 | 2004-03-11 | Kao Corp | トナーの製造方法 |
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JPS5750554A (en) | 1980-09-09 | 1982-03-25 | Canon Kk | Crusher |
JPS58143853A (ja) | 1982-02-18 | 1983-08-26 | 日本ニユ−マチツク工業株式会社 | 超音速ジエツトミル |
JPH01254266A (ja) | 1987-11-18 | 1989-10-11 | Canon Inc | 衝突式気流粉砕機及び粉砕方法 |
JP2528348B2 (ja) | 1988-06-17 | 1996-08-28 | 株式会社 栗本鐵工所 | 気流式粉砕装置 |
KR920009291B1 (ko) * | 1989-08-30 | 1992-10-15 | 캐논 가부시끼가이샤 | 충돌식 기류분쇄기 및 분체의 분쇄방법 |
US5133504A (en) | 1990-11-27 | 1992-07-28 | Xerox Corporation | Throughput efficiency enhancement of fluidized bed jet mill |
JPH04210255A (ja) | 1990-12-14 | 1992-07-31 | Fuji Xerox Co Ltd | 微粉砕装置及び粉砕方法 |
JP3162740B2 (ja) | 1991-07-05 | 2001-05-08 | 日本ニューマチック工業株式会社 | 気流分級機 |
JP3131753B2 (ja) | 1992-12-25 | 2001-02-05 | キヤノン株式会社 | 磁性トナー及び画像形成方法 |
JPH08117633A (ja) | 1994-10-20 | 1996-05-14 | Canon Inc | 衝突式気流粉砕機及び静電荷像現像用トナーの製造方法 |
US5934575A (en) * | 1996-12-27 | 1999-08-10 | Canon Kabushiki Kaisha | Pneumatic impact pulverizer and process for producing toner |
JP3297635B2 (ja) | 1996-12-27 | 2002-07-02 | キヤノン株式会社 | 衝突式気流粉砕機及びトナーの製造方法 |
JP2000140675A (ja) | 1998-11-13 | 2000-05-23 | Nippon Pneumatic Mfg Co Ltd | 粉砕装置 |
DE602004021551D1 (de) * | 2003-12-26 | 2009-07-30 | Canon Kk | Toner-Herstellungsverfahren und Gerät zur Oberflächenbehandlung von Tonerpartikeln |
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2004
- 2004-02-10 WO PCT/JP2004/001370 patent/WO2005076085A1/ja active Application Filing
- 2004-02-10 US US10/588,974 patent/US7866581B2/en not_active Expired - Fee Related
Patent Citations (3)
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JPH09206621A (ja) * | 1996-01-31 | 1997-08-12 | Ricoh Co Ltd | 衝突式気流粉砕機 |
JPH10202135A (ja) * | 1997-01-28 | 1998-08-04 | Minolta Co Ltd | 衝突式気流粉砕機およびこれを用いた電子写真用トナーの製造方法 |
JP2004073918A (ja) * | 2002-08-12 | 2004-03-11 | Kao Corp | トナーの製造方法 |
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US7866581B2 (en) | 2011-01-11 |
US20080283638A1 (en) | 2008-11-20 |
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