WO2011074900A2 - 정전하상 현상용 토너 - Google Patents
정전하상 현상용 토너 Download PDFInfo
- Publication number
- WO2011074900A2 WO2011074900A2 PCT/KR2010/009033 KR2010009033W WO2011074900A2 WO 2011074900 A2 WO2011074900 A2 WO 2011074900A2 KR 2010009033 W KR2010009033 W KR 2010009033W WO 2011074900 A2 WO2011074900 A2 WO 2011074900A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- toner
- toner particles
- gsd
- particle diameter
- volume
- Prior art date
Links
Classifications
-
- 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
- G03G9/0819—Developers with toner particles characterised by the dimensions of the 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
- G03G9/10—Developers with toner particles characterised by carrier particles
- G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
- G03G9/1075—Structural characteristics of the carrier particles, e.g. shape or crystallographic structure
-
- 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
- G03G9/10—Developers with toner particles characterised by carrier particles
- G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
Definitions
- the present invention relates to toner particles for electrostatic image development, an electrophotographic image forming developer including the same, and an electrophotographic image forming method using the same. More particularly, the particle size distribution is narrow, the transfer efficiency is good, and the toner consumption is low. A toner particle, an electrophotographic image forming developer including the same, and an electrophotographic image forming method employing the same.
- a photoconductive material is used to form an electrostatic latent image on the photosensitive member by various means, and the electrostatic image is developed with a toner to form a visible image, and then the toner image is transferred to a transfer receiving material such as paper, and then heated. And / or a number of electrophotographic methods are known which apply pressure to form an image fixed to a transfer receiving material.
- an image forming apparatus using an electrophotographic method is various, including a printer and a facsimile.
- Such an image forming apparatus requires a development method of higher resolution and clarity, and toners having a small particle size have been developed for this purpose.
- the first technical problem to be achieved by the present invention is to provide toner particles having good transfer efficiency and cleanability and low toner consumption.
- the second technical problem to be achieved by the present invention is to provide an electrostatic image developer comprising the toner particles.
- the third technical problem to be achieved by the present invention is to provide an electrophotographic image forming method using the electrostatic image developer.
- toner particles comprising a binder resin and a colorant
- toner particles for developing electrostatic images in which the particle size distribution of the toner particles satisfies the following formulas (1) and (2):
- D 16, Number, and D 16, Volume represent the cumulative 16% number particle diameter and volume particle diameter, respectively, from the smaller one
- D 50, Number and D 50, Volume represent 50% number particle diameter and volume particle diameter, respectively
- D 84, Number, and D 84, Volume represent the cumulative 84% number particle diameter and volume particle diameter from the smaller one, respectively.
- the GSD ⁇ > 0.01.
- an electrophotographic image forming method comprising the step of attaching the toner to a photosensitive member surface on which an electrostatic latent image is formed to form a toner image, and transferring the toner image to a transfer material.
- the toner particles of the present invention are excellent in transfer efficiency and cleaning property and have low toner consumption.
- Toner particles according to one aspect of the present invention include a binder resin and a colorant, and the particle size distribution of the toner particles satisfies the following formulas (1) and (2):
- D 16, Number, and D 16, Volume represent the cumulative 16% number particle diameter and volume particle diameter, respectively, from the smaller one
- D 50, Number and D 50, Volume represent 50% number particle diameter and volume particle diameter, respectively
- D 84, Number, and D 84, Volume represent the cumulative 84% number particle diameter and volume particle diameter from the smaller one, respectively.
- the toner particles according to the present invention satisfy the above formulas (1) and (2), resulting in a narrow particle size distribution, good transfer efficiency and low toner consumption.
- the binder resin included in the toner particles of the present invention may be prepared by polymerizing one or two or more polymerizable monomers selected from a vinyl monomer, a polar monomer having a carboxyl group, a monomer having an unsaturated ester group, and a monomer having a fatty acid group. .
- polymerizable monomer examples include styrene monomers of styrene, vinyltoluene, and ⁇ -methylstyrene; Acrylic acid, methacrylic acid; Methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, dimethylaminoethyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate (Meth) acrylic acid derivatives of dimethylaminoethyl methacrylate, acrylonitrile, methacrylonitrile, acrylamide, and methacrylamide; Ethylenically unsaturated monoolefins of ethylene, propylene, butylene; Vinyl halides of vinyl chloride, vinylidene chloride and vinyl fluoride; Vinyl esters of
- a polymerization initiator In order to proceed with the polymerization, a polymerization initiator is generally used, and such polymerization initiators include benzoyl peroxide and azo polymerization initiators.
- binder resins may be selected and further reacted with a crosslinking agent, and an isocyanate compound, an epoxy compound, or the like may be used as the crosslinking agent.
- the colorant included in the toner particles may be used as the pigment itself or in the form of a pigment masterbatch in which the pigment is dispersed in the resin.
- the pigment may be appropriately selected from black pigments, cyan pigments, magenta pigments, yellow pigments, and mixtures thereof, which are commonly used pigments.
- the content of the colorant may be sufficient to color the toner to form a visible image by development, for example, preferably 1 to 20 parts by weight based on 100 parts by weight of the binder resin.
- the toner particles may further include an additive in addition to the binder resin and the colorant.
- an additive included in the toner particles a release agent such as wax, a charge control agent, or the like may be used.
- polyalkylene waxes such as low molecular weight polypropylene and low molecular weight polyethylene, ester wax, carnauba wax, paraffin wax and the like can be used.
- the amount of wax contained in the toner is generally within the range of 0.1 part by weight to 30 parts by weight with respect to 100 parts by weight of the total toner composition.
- the content of the wax is less than 0.1 parts by weight, it is not desirable to realize an oilless fixation capable of fixing the toner particles without using oil, and when the content of the wax exceeds 30 parts by weight, the toner is agglomerated when stored. This is undesirable because it can be caused.
- the additive may further include an external additive.
- the external additive is to improve the fluidity of the toner or to control the charging characteristics, and includes large particle size silica, small particle size silica, and polymer beads.
- Toner particles according to embodiments of the present invention can be produced by various methods. That is, the method used in the art is not particularly limited as long as it is a method that can produce toner particles having the above physical properties.
- Toner particles are prepared by adding and homogenizing a flocculant to a mixture of the latex dispersion, the colorant dispersion and the wax dispersion and then going through the flocculation step. That is, the latex dispersion, the colorant dispersion and the wax dispersion are mixed in a reactor, and then a flocculant is added and homogenized at a stirring linear speed of 1.0 to 2.0 m / s at pH 1.5 to 2.3 and 20 to 30 ° C. for 10 to 100 minutes. The reactor is heated to 48 to 53 ° C, stirred at a stirring linear speed of 1.0 to 2.5 m / s, and coagulated.
- the aggregated toner particles undergo a fusing step followed by a cooling and drying step to obtain desired toner particles.
- the dried toner particles may be externally treated with silica or the like to adjust the charge amount and the like to prepare a final laser printer toner.
- the toner particles of the present invention may have a core-shell structure.
- a flocculant is added to the mixture of the latex dispersion, the colorant dispersion and the wax dispersion for the core, homogenized, and then subjected to the flocculation step.
- a latex dispersion for shell is added to the obtained primary flocculation toner to form a shell layer, and then subjected to a fusion step.
- an electrostatic image developer including the toner particles is provided.
- the electrostatic image developer may further include at least one selected from the group consisting of ferrite coated with an insulating material, magnetite coated with an insulating material, and iron powder coated with an insulating material, as a carrier.
- an electrophotographic image forming method using the toner particles is provided.
- an image forming method comprising the step of adhering the toner or the electrostatic image developer to a surface of a photosensitive member on which an electrostatic latent image is formed to form a toner image, and transferring the toner image to a transfer material.
- the toner or the electrostatic image developer according to the present invention is used in an electrophotographic image forming apparatus, wherein an electrophotographic image forming apparatus means a laser printer, a copying machine, a facsimile or the like.
- Coulter Multisizer Multisizer 3 Coulter Counter
- an aperture was 100 ⁇ m, and an appropriate amount of a surfactant was added to 50-100 ml of ISOTON-II (Beckman Coulter, Inc.), an electrolyte, and 10-15 mg of the measurement sample was added thereto. After the dispersion was processed for 5 minutes in an ultrasonic disperser to prepare a sample.
- the sample was heated to 20 ° C. to 200 ° C. at a heating rate of 10 ° C./min, quenched to 10 ° C. at a cooling rate of 20 ° C./min, and then again to 10 ° C. It measured by heating up at the heating rate of / min.
- the acid value (mgKOH / g) was measured by dissolving the resin in dichloromethane, cooling the solution, and titrating with 0.1 N KOH methyl alcohol solution.
- a 30-liter reactor equipped with a stirrer, thermometer, and condenser was installed in an oil bath, a heat transfer medium. 6,600 g and 32 g of distilled water and a surfactant (Dowfax 2A1) were added to the reactor thus installed, and the reactor temperature was increased to 70 ° C. and stirred at a speed of 100 rpm.
- monomers that is, 8,380 g of styrene, 3,220 g of butyl acrylate, 370 g of 2-carboxyethyl acrylate and 226 g of 1,10-decanediol diacrylate, 5,075 g of distilled water, 226 g of surfactant (Dowfax 2A1), and polyethylene glycol ethyl 530 g of ether methacrylate and 188 g of 1-dodecanethiol as a chain transfer agent were stirred at 400 to 500 rpm for 30 minutes with a disk-type impeller, and then slowly added to the reactor for 1 hour. After the reaction was performed for about 8 hours and then slowly cooled to room temperature to complete the reaction.
- monomers that is, 8,380 g of styrene, 3,220 g of butyl acrylate, 370 g of 2-carboxyethyl acrylate and 226 g of 1,10-decanediol di
- the glass transition temperature (Tg) of the binder resin was measured using a differential scanning calorimeter (DSC), and the temperature was 62 ° C.
- the number average molecular weight of the binder resin was measured by gel permeation chromatography (GPC) using a polystyrene reference sample. As a result, the number average molecular weight was 50,000.
- D50 (v) means a particle size corresponding to 50% of the total volume when the volume is accumulated from small particles by measuring the particle size corresponding to 50% of the volume average particle diameter.
- the particle size of the dispersed particles was measured using a Multisizer 2000 (manufactured by Malvern Corporation), and the D50 (v) was 320 nm.
- Toner particles were prepared in the same manner as in Example 1, except that the impeller dimensions and stirring speeds were changed as in Table 1 below.
- the d value represents the diameter of the impeller
- the b value represents the height of the impeller.
- the stirring speed is expressed as a percentage of the degree of upward or downward adjustment based on the stirring speed of Example 1.
- Toner particles were manufactured in the same manner as in Example 1, except that the type of impeller was different.
- Table 2 toner particles according to the embodiment of the present invention satisfies the conditions of the formula (1) and (2), the toner particles according to the comparative example satisfies the formula (1) and / or (2) You can see that you can't.
- the chargeability was measured using a q / m meter (EPPING, Germany).
- 9.3 g of the carrier (100 ⁇ m, Japan Imaging Society) and 0.7 g of the toner mixed with the silica were mixed using a Turblar mixer (WAB, Switzerland). Taking 1g of these was put in a q / m meter at room temperature and humidity conditions, the charge amount was measured for 90 seconds, the results are shown in Table 3 below.
- Toner consumption per 1,000 sheets (initial developer weight)-[(developer weight after printing)-(waste toner weight after printing)]
- the toner particles of Examples 1 to 3 according to one embodiment of the present invention have a narrow particle size distribution, excellent chargeability, low toner consumption, and excellent transfer efficiency and image quality. Able to know.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Developing Agents For Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
Description
실시예 1 | 실시예 2 | 실시예 3 | 비교예 1 | 비교예 2 | 비교예 3 | |
임펠러 치수(meter) | d = 0.30b = 0.07 | d = 0.30b = 0.07 | d = 0.30b = 0.07 | 프로펠러형(PropellerType) | 분산형(DispersedType) | 앵커형(AnchorType) |
교반 속도 | 0% | - 5% | + 5% | 0% | 0% | 0% |
실시예 1 | 실시예 2 | 실시예 3 | 비교예 1 | 비교예 2 | 비교예 3 | |
GSDα | 0.793 | 0.774 | 0.771 | 0.861 | 0.854 | 0.786 |
GSDβ | 0.823 | 0.846 | 0.842 | 0.859 | 0.846 | 0.760 |
GSDγ | 0.862 | 0.863 | 0.861 | 0.879 | 0.864 | 0.677 |
실시예 1 | 실시예 2 | 실시예 3 | 비교예 1 | 비교예 2 | 비교예 3 | |
대전량 | -50 | -51 | -55 | -30 | -35 | -33 |
토너 소모량(g) | 45 | 48 | 47 | 55 | 61 | 58 |
전사 효율(%) | 95% | 93% | 96% | 90% | 88% | 85% |
화상 품질 | 6K에서도 화상품질 우수 | 6K에서도 화상품질 우수 | 6K에서도 화상품질 우수 | 3K 이후 back ground 발생 | 3K 이후 back ground 발생, 3.5K 이후 back ground 심해져 프린팅 멈춤 | 3K 이후 back ground 발생, 3.5K 이후 back ground 심해져 프린팅 멈춤 |
Claims (6)
- 결착 수지 및 착색제를 포함하는 토너 입자로서, 토너 입자의 입도 분포가 하기 식 (1) 및 (2)를 만족하는 정전하상 현상용 토너 입자:GSDα≤GSDβ≤GSDγ (1)0.80≤GSDβ≤0.88 (2)상기 식에서여기서D16, Number 및 D16, Volume는 각각 작은 쪽으로부터의 누적 16% 개수 입경 및 부피 입경을 나타내고,D50, Number 및 D50, Volume는 각각 50% 개수 입경 및 부피 입경을 나타내고,D84, Number 및 D84, Volume는 각각 작은 쪽으로부터의 누적 84% 개수 입경 및 부피 입경을 나타낸다.
- 제 1 항에 있어서,상기 GSDα> 0.5인 것을 특징으로 하는 토너 입자.
- 제 1 항에 있어서,상기 GSDγ≤1인 것을 특징으로 하는 토너 입자.
- 제 1 항 내지 제 3 항 중 어느 한 항에 따른 토너 입자를 포함하는 정전하상 현상제.
- 제 4 항에 있어서,절연물질로 피복된 페라이트, 절연물질로 피복된 마그네타이트 및 절연물질로 피복된 철분말로 이루어진 군에서 선택되는 1종 이상을 캐리어로 더 포함하는 것을 특징으로 하는 정전하상 현상제.
- 정전 잠상이 형성된 감광체 표면에 토너를 부착시켜 토너 화상을 형성하고,상기 토너 화상을 전사재에 전사하는 공정을 포함하는 전자사진용 화상형성방법에서, 상기 토너로서 제 1항 내지 제 3항 중 어느 한 항에 따른 토너 입자를 사용하는 것을 특징으로 하는 전자사진용 화상형성방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010800567125A CN102656521A (zh) | 2009-12-16 | 2010-12-16 | 静电荷像显影用调色剂 |
JP2012544388A JP2013514543A (ja) | 2009-12-16 | 2010-12-16 | 静電荷像現像用トナー |
EP10837896A EP2515172A2 (en) | 2009-12-16 | 2010-12-16 | Toner for electrostatic use |
US13/508,506 US20120276476A1 (en) | 2009-12-16 | 2010-12-16 | Toner for electrostatic use |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090125686A KR20110068633A (ko) | 2009-12-16 | 2009-12-16 | 정전하상 현상용 토너 |
KR10-2009-0125686 | 2009-12-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011074900A2 true WO2011074900A2 (ko) | 2011-06-23 |
WO2011074900A3 WO2011074900A3 (ko) | 2011-11-03 |
Family
ID=44167884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2010/009033 WO2011074900A2 (ko) | 2009-12-16 | 2010-12-16 | 정전하상 현상용 토너 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20120276476A1 (ko) |
EP (1) | EP2515172A2 (ko) |
JP (1) | JP2013514543A (ko) |
KR (1) | KR20110068633A (ko) |
CN (1) | CN102656521A (ko) |
WO (1) | WO2011074900A2 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140004457A1 (en) * | 2010-12-24 | 2014-01-02 | Samsung Fine Chemicals Co., Ltd. | Polymerization toner for electrostatic developing |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3800959A1 (en) | 2010-09-28 | 2021-04-07 | Fujitsu Limited | Coexistent working mode establishment method, user equipment, base station and system |
US10877386B2 (en) * | 2018-08-14 | 2020-12-29 | Canon Kabushiki Kaisha | Toner |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0227006B1 (en) * | 1985-12-17 | 1991-03-13 | Konica Corporation | A method of developing electrostatic latent images |
DE69313518T2 (de) * | 1992-06-08 | 1998-02-19 | Canon Kk | Bilderzeugungsverfahren |
JP2981803B2 (ja) * | 1992-06-24 | 1999-11-22 | キヤノン株式会社 | 現像剤及び現像方法 |
JP2967318B2 (ja) * | 1993-03-31 | 1999-10-25 | キヤノン株式会社 | 現像剤及び現像方法 |
JP2003076238A (ja) * | 2001-09-03 | 2003-03-14 | Konica Corp | 画像形成方法および画像形成装置 |
JP2002311638A (ja) * | 2002-01-24 | 2002-10-23 | Seiko Epson Corp | トナー |
JP4026373B2 (ja) * | 2002-02-14 | 2007-12-26 | 富士ゼロックス株式会社 | 静電荷潜像現像用トナーの製造方法 |
EP1522900B1 (en) * | 2003-10-08 | 2008-08-06 | Ricoh Company, Ltd. | Toner and developer, and image forming method and apparatus using the developer |
JP4298472B2 (ja) * | 2003-11-05 | 2009-07-22 | オリヱント化学工業株式会社 | 静電荷像現像用トナー |
US7220526B2 (en) * | 2004-03-15 | 2007-05-22 | Konica Minolta Holdings, Inc. | Image forming method |
US7682769B2 (en) * | 2005-07-12 | 2010-03-23 | Konica Minolta Business Technologies, Inc. | Method of manufacturing toner, toner, and image forming method |
JP4670679B2 (ja) * | 2006-02-23 | 2011-04-13 | 富士ゼロックス株式会社 | 静電荷像現像用トナー及びその製造方法、静電荷像現像剤並びに画像形成方法 |
KR20080002082A (ko) * | 2006-06-30 | 2008-01-04 | 삼성전자주식회사 | 토너의 제조방법 및 이를 이용하여 제조된 토너 |
WO2008075808A1 (en) * | 2006-12-19 | 2008-06-26 | Cheil Industries Inc. | Method for preparing toner having uniform particle size distribution and toner prepared by using the method |
-
2009
- 2009-12-16 KR KR1020090125686A patent/KR20110068633A/ko not_active Application Discontinuation
-
2010
- 2010-12-16 US US13/508,506 patent/US20120276476A1/en not_active Abandoned
- 2010-12-16 EP EP10837896A patent/EP2515172A2/en not_active Withdrawn
- 2010-12-16 JP JP2012544388A patent/JP2013514543A/ja active Pending
- 2010-12-16 CN CN2010800567125A patent/CN102656521A/zh active Pending
- 2010-12-16 WO PCT/KR2010/009033 patent/WO2011074900A2/ko active Application Filing
Non-Patent Citations (1)
Title |
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None |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140004457A1 (en) * | 2010-12-24 | 2014-01-02 | Samsung Fine Chemicals Co., Ltd. | Polymerization toner for electrostatic developing |
Also Published As
Publication number | Publication date |
---|---|
JP2013514543A (ja) | 2013-04-25 |
CN102656521A (zh) | 2012-09-05 |
KR20110068633A (ko) | 2011-06-22 |
EP2515172A2 (en) | 2012-10-24 |
US20120276476A1 (en) | 2012-11-01 |
WO2011074900A3 (ko) | 2011-11-03 |
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