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Preparation method of color carbon powder

A toner and color technology, which is applied in the field of color toner preparation, can solve the problems of toner charging performance and fluidity instability, external additives are easy to fall off, image quality deterioration, etc., to improve charging performance and stability , the effect of improving production efficiency

Active Publication Date: 2016-06-08
HUBEI DINGLONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The suspension polymerization method represented by Canon and Zeon can obtain color toner with controllable particle size through a simpler process, which can significantly improve the fluidity and charging performance of the toner, but the resolution is relatively low. Disadvantages such as low and difficult to clean
The above toner manufacturing methods have their own advantages and disadvantages. They are suitable for their respective machines, but they have one thing in common: the modification of the surface structure of toner is made by mechanically mixing the toner matrix and external additives. This will cause uneven mixing, easy fall-off of external additives, resulting in unstable charging performance and fluidity of the toner, and poor image quality after long-term printing and copying.

Method used

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  • Preparation method of color carbon powder
  • Preparation method of color carbon powder
  • Preparation method of color carbon powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]Preparation of the monomer oil phase of the carbon powder core: 80 parts of styrene, 19 parts of n-butyl acrylate, 5 parts of pigment red (No. 269) and 6 parts of wax (behenyl behenate), and the above Grind and disperse with a ball mill at room temperature to obtain a dispersion, then mix 1 part of divinylbenzene, 0.5 parts of dodecanethiol and 6 parts of azobisisobutyronitrile with the dispersion, and fully disperse for 5 minutes to obtain carbon Monolithic oily phase of the powder core.

[0034] Preparation of aqueous dispersion liquid for dispersing the monomer oil phase: slowly add 200 parts of deionized water to dissolve 7.5 parts of sodium hydroxide in an aqueous solution of 100 parts of deionized water and 6 parts of magnesium chloride, and disperse at high speed for 5 minutes to obtain hydrogen The magnesia suspension dispersion liquid is used as the aqueous dispersion liquid for dispersing the monomer oil phase.

[0035] Preparation of a mixture of nanoparticle...

Embodiment 2

[0039] In addition to changing 80 parts of styrene, 19 parts of n-butyl acrylate, 8 parts of magnesium chloride, and 8.5 parts of sodium hydroxide into 70 parts of styrene, 30 parts of n-butyl acrylate, 8 parts of magnesium chloride, and 8.5 parts of sodium hydroxide, the same implementation The same operation as in Example 1 was carried out to obtain carbon powder with a particle size of 7.1 microns.

Embodiment 3

[0041] In addition to changing 5 parts of pigment red (269), 80 parts of styrene, 19 parts of n-butyl acrylate, 10 parts of magnesium chloride, and 9.5 parts of sodium hydroxide to 5.5 parts of pigment yellow (No. 74), 70 parts of styrene, and n-butyl acrylate Except 30 parts of ester, 9.5 parts of magnesium chloride, and 10 parts of sodium hydroxide, the same operation as in Example 1 was carried out to obtain carbon powder with a particle diameter of 5.3 microns.

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Abstract

The invention discloses a preparation method of color carbon powder, and solves the problems of complex preparation process, high production and uneven mixing of color carbon powder, and instability of live performance and liquidity of the carbon powder, which is caused by easiness for falling of an external additive. According to the technical scheme, after a nano particle external additive, a monomer which can modify surfaces of nano particles and contain unsaturated double bonds and other monomers containing unsaturated double bonds are mixed together, a mixture of nano particles of which the surfaces are modified by the unsaturated double bonds and other monomers containing unsaturated double bonds is obtained for later use; after the mixture is added into dispersion liquid containing carbon powder main body particles to uniformly mix, a waterborne initiator is added to perform a polymerization reaction, and after the reaction is completed, the color carbon powder which uses a nano particle and resin compound as a shell layer and is of a core-shell structure is obtained. The preparation method is simple in process, high in reliability and low in production cost, is environmental-friendly, is very stable in imaging quality, and meanwhile, is high and uniform in development density and low in bottom ash rate and waste powder rate.

Description

technical field [0001] The invention relates to a preparation method of colored carbon powder. Background technique [0002] The traditional preparation method of color toner, which is a necessary consumable for color printers and copiers, is the "crushing method". Colored toner with an average particle size of about 10 microns comes out. However, this preparation method has defects such as high energy consumption, uneven dispersion of colorant, and poor uniformity of toner particle size and shape, which will lead to sticking rollers, low resolution, poor color and waste toner during printing and copying. Disadvantages such as higher rate. Companies represented by Fuji Xerox and Konica Minolta proposed the "emulsion polymerization / co-flocculation method", through the adjustment of surfactants and shear rates, powders with a particle size of less than 5 microns can be produced, and powders can be effectively controlled. The properties of the body, thereby improving the res...

Claims

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Application Information

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IPC IPC(8): G03G9/08G03G9/093
CPCG03G9/0804G03G9/093
Inventor 朱顺全张季平
Owner HUBEI DINGLONG CO LTD