Method of preparing toner and toner prepared using the method

A technology of toner and stabilizer, applied in the field of toner preparation, can solve the problems of difficulty in controlling the size of latex particles, the reverse effect of surfactants, etc., and achieve the effect of good transfer ability and improved distribution

Inactive Publication Date: 2008-01-02
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using this method, surfactants can cause reverse effects, and it is difficult to control the size of latex particles

Method used

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  • Method of preparing toner and toner prepared using the method
  • Method of preparing toner and toner prepared using the method
  • Method of preparing toner and toner prepared using the method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] FIG. 1 is a schematic diagram showing a process of preparing a toner according to an embodiment of the present invention. FIG. 2 is an enlarged view of part A of FIG. 1 according to an embodiment of the present invention.

[0049] First, distilled water and a dispersant are injected into the first storage tank 11 and heated to 70-80° C. to prepare a stabilizer dispersion solution 12 . The pump 14 applies a predetermined pressure to the stabilizer dispersion solution 12 to move the stabilizer dispersion solution 12 to the reactor 19 through the pipe 13 .

[0050] The toner composition 18 containing at least one polymerizable monomer, colorant and initiator is injected into the second storage tank 17 preheated to 70-85° C., and continuously injected into the preheated syringe 15 . A predetermined pressure is applied to the second storage tank 17 so that the toner composition 18 forms a droplet 24 through the syringe needle 22 . The diameter of the toner particles prepa...

example 1

[0082] Preparation of stabilizer dispersion solution

[0083] 400 g of distilled water and 4 g of PVA (molecular weight: 170,000) as a dispersant were injected into a 500 ml storage tank with a heat source and a stirrer. When the temperature rose to 70°C, the mixture was stirred to fully dissolve the dispersant. During the preparation of the core particles, the dispersant flowed continuously to the reactor through the tube while maintaining the temperature at 70°C.

[0084] Nucleus preparation

[0085] Introduce a monomer consisting of 148g styrene, 48g n-butyl acrylate and 14g acrylic acid and a chain transfer agent consisting of 0.02g n-dodecyl mercaptan, then add 10.5g carbon black, and use a bead mill (bead mill ) was stirred at 6000rmp for 5 minutes. Then, the beads were removed to prepare 105 g of monomer and pigment mixture. The temperature of the mixture was raised in a water bath at 70° C., then 5 g of paraffin was added, and stirred for 30 minutes to fully melt t...

example 2

[0089] A toner was prepared in the same manner as in Example 1, except that the temperature of the monomer storage tank was raised to 75° C. and a syringe needle having a diameter of 0.005 μm was used. The average diameter of the obtained toner particles was 5.8 µm, and the particle size distribution was very narrow.

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Abstract

A method of preparing toner, is provided by preparing a stabilizer dispersion solution using distilled water and a dispersing agent; forming droplets by discharging the toner composition including at least one polymerizable monomer, a colorant, wax, and an initiator into the stabilizer dispersion solution through a syringe needle; forming core particles by warming the droplets dispersed in the stabilizer dispersion solution; and forming shells by adding a polymerizable monomer, a cross-linking agent, and an initiator to the core particles. The diameter of particles of the toner can be efficiently adjusted by changing the manufacturing process of the polymerization toner. The distribution of the toner particle diameter is improved and thus no additional sorting process is required. Also, the transferring performance of the toner can be improved, and various colors can be realized by a simple process.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2006-0060682 filed with the Korean Intellectual Property Office on June 30, 2006, the entire contents of which are hereby disclosed by reference. technical field [0002] The present invention relates to a method of producing a toner and a toner produced by the method. More particularly, the present invention relates to a method for producing a toner by suspension polymerization using a syringe needle, and a toner produced by the method. The present invention also relates to a method of forming an image using the toner, and an image forming apparatus using the toner. Background technique [0003] In an electrophotographic process or an electrostatic recording process, the developer used to form an electrostatic image or an electrostatic latent image may be a two-component developer formed of toner and carrier particles, or a single-component developer formed of only toner Separate developer. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/08G03G9/09G03G9/10G03G13/00G03G15/00
CPCG03G9/0806G03G9/09364G03G9/09321G03G9/09392G03G9/08G03G13/00
Inventor 申曜多连卿烈洪昌国郑旻泳任相淳朴洙范
Owner SAMSUNG ELECTRONICS CO LTD
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