Adhesive resin of color matching agent and color matching agent

A binder resin and toner technology, which is applied in the field of low-temperature fixability and durability of toners, can solve problems such as deterioration of chargeability, and achieve improved printing quality, reduced waste toner, and excellent low-temperature fixability. Effect

Inactive Publication Date: 2014-04-16
中山市永南彩印有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the problem of deteriorating chargeability is particularly noticeable in full-color toners used in full-color image forming apparatuses.

Method used

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  • Adhesive resin of color matching agent and color matching agent
  • Adhesive resin of color matching agent and color matching agent
  • Adhesive resin of color matching agent and color matching agent

Examples

Experimental program
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Effect test

preparation example Construction

[0047] The present invention also provides a method for preparing the above-mentioned binder resin. The binder resin is prepared by a melt-kneading method. The melt-kneading method ensures that by applying shear stress (or shearing force) to each component in a low viscosity state Reasons for sufficient dispersion. However, if the temperature is too high or excessive shear stress is applied, problems such as scission of molecular chains in the resin may occur. Therefore, the kneading method must be carefully used in consideration of the change in molecular weight (especially the decrease in molecular weight). Therefore, it is preferable that the temperature range of melt-kneading is preferably 110°C to 125°C.

[0048] Specifically, the preparation method of the binder resin provided by the present invention specifically includes mixing crystalline polyester, polyethylene oxide, and ethanolamine-modified graphene, and sending it into a twin-screw extrusion-kneader at 110°C to 125...

Embodiment 1

[0112] Example 1 Preparation of ethanolamine modified graphene

[0113] Treat the natural flake graphite with 5% hydrochloric acid solution for 24h, wash the paint thoroughly with water, and dry it in an oven at 110℃ for 24h, then slowly add 2g of 500 mesh processed natural flake graphite to 50ml concentrated sulfuric acid under stirring In a 500ml large beaker, the temperature is maintained at (0±1)℃, then slowly add 1g sodium nitrate and 6g potassium permanganate, and stir for 2h while maintaining (0±1)℃, at (35±3) In a constant temperature water bath at ℃, keep stirring for 30min, slowly add 90ml of water to increase the temperature to 98℃, maintain at this temperature for 15min; dilute to 200ml with warm water, pour 10ml of H with a concentration of 5% 2 O 2 , Filter while hot, and wash the filter cake with 5% HCl until there is no 80% in the filtrate 4 2- (Use BaCl 2 Solution detection), at 50℃ at P 2 O 5 In the presence of vacuum drying for 24 hours or drying in room tempera...

Embodiment 2

[0114] Example 2 Preparation of crystalline polyester

[0115] Add 1,170 parts of 1,6-hexanediol, 23.7 parts of sodium dimethyl 5-sulfoisophthalate, and 22.8 parts of dimethyl fumarate to a reaction vessel equipped with a condenser, agitator, and nitrogen inlet pipe , 857 parts of dimethyl sebacate, and 0.4 parts of dibutyl tin oxide. In order to create an inert atmosphere in the reaction vessel, the air was replaced with nitrogen by reducing the pressure. After that, the mixture was mechanically stirred at 180 rpm for 5 hours. The mixture was gradually heated to 220°C under reduced pressure and stirred for 2 hours until the mixture became viscous. The mixture was then air cooled to terminate the reaction. Thus, crystalline polyester 1 was prepared, the weight average molecular weight of crystalline polyester 1 was 6,800, and the melting point was 90°C.

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PUM

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Abstract

The invention provide a color matching agent which comprises a color matching agent master batch and an external additive, wherein the color matching agent master batch comprises a coloring agent, adhesive resin, a charge control agent and a mold release agent, and the glass-transition temperature of the adhesive resin ranges from 50 DEG C to 80 DEG C. The color matching agent provided by the invention has excellent low-temperature photographic fixing performance, heat-resisting storage stability and liquidity simultaneously, so that the charge quantity of the color matching agent is uniformly distributed, the waste powder quantity is reduced, the transfer ratio is increased, the printing quality is improved, further, pollution to the machine and the environment is avoided, and high-quality images are obtained.

Description

Technical field [0001] The present invention relates to a binder resin and a toner for toner, and more particularly relates to a toner having enhanced low-temperature fixability and durability. Background technique [0002] In recent years, toners are expected to have a small particle size and heat offset resistance to provide high-quality output images, low-temperature fixability for energy saving, and to resist high temperature and high temperature during storage or transportation after production. Heat-resistant storage stability in wet environments. In particular, low-temperature fixability is a very important quality of the toner because fixing energy consumption occupies most of the energy consumption of the entire image forming process. [0003] Conventionally, toners produced by kneading and pulverization methods have been used. The toner produced by the kneading and pulverization method has problems that its particle size is difficult to reduce, the particle shape is une...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/087G03G9/09
Inventor 孙霞
Owner 中山市永南彩印有限公司
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