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Method of preparing toner and toner prepared using the method

A toner and particle technology, applied in the direction of developer, instrument, optics, etc., can solve the problems of polluted environment, complicated process, difficult to remove surfactant, etc., and achieve the effect of easy size

Inactive Publication Date: 2007-11-21
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the process of this method of preparing toner using the conventional emulsification-aggregation method is complicated, and it is difficult to remove the surfactant used, and if the surfactant remains, various problems arise
In particular, it is necessary to implement other processes such as a process of washing toner, which pollutes the environment and reduces economic efficiency

Method used

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  • Method of preparing toner and toner prepared using the method

Examples

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preparation example Construction

[0064] The toner is preferably prepared in the absence of a surfactant during the preparation process of the polymer latex particles and the aggregation process of the polymer latex particles. Details of the process are as described above. The average diameter of the prepared toner particles is about 0.5-20 μm, preferably about 5-10 μm.

[0065] The radical formed from the initiator reacts with the polymerizable monomer, or the radical reacts with the reactive functional group of the polymerizable monomer and the macromonomer to form a copolymer. The copolymer can be formed by copolymerizing at least one monomer selected from the group consisting of vinyl monomers, polar monomers having carboxyl groups, monomers having unsaturated polyester groups, and monomers having fatty acids. The weight average molecular weight of the resulting copolymer is preferably about 2,000-200,000.

[0066] The weight average molecular weight of the macromer is about 100-100,000, preferably about...

Embodiment 1

[0085] The inside of the reactor was purged with nitrogen, and a mixture of 307 g of deionized distilled water and 0.5 g of poly(ethylene glycol) ethyl ether methacrylic acid (PEG-EEM, manufactured by Aldrich) was charged into the reactor, stirred and heated at 250 rpm. When the internal temperature of the reactor reached 82°C, 0.2 g of potassium persulfate was dissolved in 20 g of deionized water and added to the reactor as a water-soluble free radical initiator, and styrene, n-butyl acrylate and methacrylic acid (molar The monomer mixture with a ratio of 7:2:1, 10.5 g) and 0.2 g of the chain transfer agent 1-dodecanethiol were added to the reactor by means of reduced feeding, and the reaction was carried out for more than 2 hours. In addition, 15 g of ester wax was heated in a monomer mixture of styrene, n-butyl acrylate and methacrylic acid (molar ratio 6.9:2.3:0.8, 28.1 g) and 0.9 g of chain transfer agent 1-dodecanethiol , was slowly dissolved, and dispersed in a mixed so...

Embodiment 2

[0088] A toner was prepared in the same manner as in Example 1, except that 4 g of a cyan pigment (PB15:3) was used in place of the carbon black in Example 1, and the resulting toner particles had a volume average particle size of 6.8 μm.

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Abstract

A method of manufacturing toner uses a simplified process, in which the use of a surfacant is reduced to minimize the amount of wastewater generated. The toner manufactured using the method, an image forming method using the toner, and an image forming apparatus employing the toner are also provided.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2006-0045111, filed in the Korean Intellectual Property Office on May 19, 2006, pursuant to 35 U.S.C. §119(a), the entire disclosure of which is hereby incorporated by reference herein . technical field [0002] The present invention relates to a method for preparing a toner and a toner prepared using the method. More particularly, the present invention relates to a method of preparing a toner using a simplified process wherein the amount of surfactant used in the process is reduced to minimize the amount of waste water generated. The present invention also provides an image forming method and an image forming apparatus using the toner. Background technique [0003] In an electrophotographic process or an electrostatic recording process, the developer for forming an electrostatic image or an electrostatic latent image may be a two-component developer formed of toner and carrier particles or a one...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/08G03G9/097
CPCG03G9/0825G03G9/09392G03G9/0935G03G9/08782G03G9/09307G03G9/08711G03G9/0802G03G9/08722G03G9/0804G03G9/08
Inventor 郑旻泳任相淳连卿烈洪昌国申曜多朴洙范金贤主朴星奂
Owner SAMSUNG ELECTRONICS CO LTD
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