A kind of color toner and preparation method thereof

A technology of color toner and toner, which is applied in the direction of instruments, optics, developer, etc., can solve the problems of high-efficiency coating of difficult resins, material leakage, uneven components, and uneven charges, and achieve simple preparation process conditions and charge distribution Uniform, grain-shaped effect

Inactive Publication Date: 2019-11-15
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods are simple to operate, but because each component has a certain particle size, it is difficult to ensure that the resin covers each component at the same time and efficiently by directly mixing multiple components, so it is easy to cause leakage and uneven components.
[0004] The color toner prepared by the emulsion polymerization method overcomes many shortcomings of the traditional physical method, but the existing technology mostly adopts the method of physical mixing of pigment emulsion, wax emulsion and resin emulsion, or adopts the method of multi-component mixing and direct polymerization for coating Composite, in these methods, the combination of pigment and wax with resin is not firm or can not guarantee the coating efficiency and uniform components, the pigment and wax are easy to leak, and there are also problems of uneven charge and poor printing effect

Method used

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  • A kind of color toner and preparation method thereof
  • A kind of color toner and preparation method thereof
  • A kind of color toner and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1) Preparation of pigment and charge agent dispersion: add 5 parts of blue pigment PB15:3, 2 parts of charge regulator, 1 part of TX-100, 0.25 part of SDS into 500 parts of deionized water, and disperse evenly by ultrasonic;

[0047] Add the above mixture into a ball mill tank containing zirconia microspheres with a particle size of 1.0mm-1.6mm, the mass of the microspheres is 500 parts, and the ball mill is used to obtain a uniform and stable dispersion of pigment and charge regulator; add 200 parts to remove Deionized water is stirred and diluted;

[0048] 2) Preparation of resin-coated pigment and charge agent composite latex particles: Weigh 40 parts of styrene and 10 parts of butyl acrylate, mix them and drop them into the diluted dispersion over 30 minutes, dissolve 1.5 parts of water-soluble initiator KPS In 200 parts of deionized water, drop it in after the addition of the monomer is completed, and heat it to 75±5°C; react for 6 hours to obtain a multi-component...

Embodiment 2

[0055] 1) Preparation of pigment and charge agent dispersion: Add 4 parts of yellow pigment PY17, 1.5 parts of charge regulator, 2 parts of TX-100, 0.5 part of SDBS into 500 parts of deionized water, and disperse evenly by ultrasonic;

[0056] Add the above mixture into a ball mill tank filled with zirconia microspheres with a particle size of 1.0mm-1.6mm. The mass of the microspheres is 400 parts. The ball mill is used to obtain a uniform and stable dispersion of pigments and charge regulators. Add 200 parts to remove Deionized water is stirred and diluted;

[0057] 2) Preparation of resin-coated pigment and charge agent composite latex particles: Weigh 37.5 parts of styrene and 12.5 parts of butyl acrylate, mix the two, drop the diluted dispersion in 30 minutes, and dissolve 1.5 parts of water-soluble initiator APS In 200 parts of deionized water, drop it in after the addition of the monomer is completed, and heat to 75±5°C after the addition;

[0058] React for 6h to obtai...

Embodiment 3

[0064] 1) Preparation of pigment and charge agent dispersion: add 3 parts of red pigment PR184, 1 part of charge regulator, 1 part of TX-100, 0.25 part of SDS into 500 parts of deionized water, and disperse evenly by ultrasonic;

[0065] Add the above mixture into a ball mill tank filled with zirconia microspheres with a particle size of 1.0mm-1.6mm. The mass of the microspheres is 500 parts. The ball mill is used to obtain a uniform and stable dispersion of pigments and charge regulators. Add 400 parts to remove Deionized water is stirred and diluted;

[0066] 2) Preparation of resin-coated pigment and charge agent composite latex particles: Weigh 35 parts of styrene and 15 parts of butyl acrylate, mix and drop into the diluted dispersion for 30 minutes, and dissolve 1 part of water-soluble initiator KPS in 200 parts of deionized water, drop it in after the addition of the monomer, and heat it to 75±5°C; react for 6 hours to obtain a multi-component composite latex particle e...

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Abstract

The invention discloses colorful powdered ink and a preparation method therefor. The preparation method comprises the steps of coating organic pigments, a charge control agent and polyethylene wax with styrene-acrylic resin to obtain completely-coated nanometer lax particles with a core-shell structure; then adopting an electrolyte condensation method to prepare micron-level quasi-powdered ink particles with uniform components and particle diameters; and then performing the steps of separating, washing, drying, modifying and the like to obtain the colorful powdered ink. According to the preparation method, the pigments, the charge control agent and the wax are packaged by resin, so that the problems of uneven components and easy external leakage are effectively solved; and in addition, the prepared colorful powdered ink has the advantages of uniform component dispersion, regular appearance, controllable particle diameters, relatively narrow distribution, and the like.

Description

technical field [0001] The invention relates to a color toner used in color printers, copiers, fax machines and printing machines and a preparation method thereof, in particular to a color toner prepared by in-situ emulsion polymerization and electrolyte coagulation and a method thereof, belonging to the field of toner preparation . Background technique [0002] With the development of office automation and the popularization of color printing and copying, color toner, as its main consumables, has a huge market demand and rapid development. The traditional melting pulverization toner preparation technology can no longer meet the high-quality requirements of color printing for high-resolution image output. At present, the color toners used in color printers, copiers, fax machines and printing machines are polymer powders synthesized by chemical methods. Polymerization color toner is mainly composed of resin, pigment, wax, charge agent and other additives. The most widely us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G9/08C08F212/08C08F220/18C08K3/36C08J3/12C08L25/14C08L23/06
CPCC08F212/08C08J3/12C08J2325/14C08J2423/06C08K3/36C08K2201/011C08L25/14C08L2205/025C08L2205/03G03G9/0806G03G9/0821C08L23/06C08F220/1804
Inventor 叶明泉臧垚韩爱军陈昕张树婷杨瑞
Owner NANJING UNIV OF SCI & TECH
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