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Positive electricity colored carbon powder for electronic photographing and preparation method thereof

An electrophotographic, positively charged technology, which is applied in the field of electrophotographic positively charged color toner and its preparation, can solve the problems of blurred characters and images, powder drop, can not completely solve the problems of the charging stability of color toner particles, etc. Improves cleanliness and power stability

Inactive Publication Date: 2016-12-21
GUANGZHOU VIVID PRINT MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the usual production technology, adding small particles of external additives for agglomeration cannot completely solve the charging stability of the colored toner particles, and will cause uneven charging of the colored toner particles
When the color toner particles are not uniformly charged, it will cause the color toner particles to fly in the printer, resulting in bottom dust; in the long-life printing process, with the increase in the number of printed sheets, blurred text and images and bottom dust will appear. and powder falling

Method used

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  • Positive electricity colored carbon powder for electronic photographing and preparation method thereof
  • Positive electricity colored carbon powder for electronic photographing and preparation method thereof
  • Positive electricity colored carbon powder for electronic photographing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation of cyan toner comprises the following two steps:

[0027] 1) Preparation of carbon powder semi-finished products: 905 parts of ET8100 polyester resin (produced by SK Chemicals in South Korea, softening point 155°C, glass transition temperature 66°C), add 50 parts of cyan pigment PV Fast Blue BG (produced by Clariant, Germany), add 10 Parts of positive charge control agent P51 (produced by Dongfang Chemical in Japan) and 35 parts of polyethylene wax POLYWAX 2000 (produced by Baker Hughes in the United States, melting point 126 ° C), in a 5L high-speed mixer produced by Zhangjiagang Baixiong Machinery Co., Ltd. at a peripheral speed of 20m / s mixed for 5 minutes, and the obtained mixture was kneaded in Nanjing Chengmeng co-rotating twin-screw extruder (TSH-25), the extrusion temperature was 135°C, after cooling, it was coarsely pulverized on a hammer mill, and then used in a Shanghai chemical machine The 100-type airflow pulverizer of the third factory is ...

Embodiment 2-6

[0030] The difference between the following examples and Example 1 is that the proportions of different positively charged silicon dioxide and negatively charged silicon dioxide in the external additives are different, and the particle size and charge amount are also different, as shown in Table 1.

[0031] The composition of external additive in table 1 embodiment 2-6

[0032]

[0033]

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Abstract

The invention discloses positive electricity colored carbon powder for electronic photographing. The colored carbon powder is composed of the following components, by weight parts, 70-96.5 parts of resin, 1-10 parts of pigment, 0.5-10 parts of positive charge control agent, 2-10 parts of release agent and 0.2-10 parts of external additive. The invention also discloses a preparation method for the positive electricity colored carbon powder. According to the carbon powder, the quality is stable and reliable and the electrification stability is relatively high. According to an image obtained by employing the carbon powder, the density is stable and anomalies such as serious bottom ash and powder falling will not occur.

Description

technical field [0001] The invention relates to a positively charged color carbon powder, in particular to a positively charged color carbon powder for electrophotography and a preparation method thereof. Background technique [0002] In recent years, with the automation of office equipment and the development of information technology, the use of consumables such as copiers, printers, photography, and development has become more and more common. With the trend of copiers and printers becoming full-color, miniaturized, and high-speed, people have higher and higher requirements for the quality, stability, and lasting color of printed images, especially for high-speed printers with 1200dpi and higher printing resolutions. In terms of quality, not only high and stable image density is required, but also no bottom dust, and the stability of printed image quality must be ensured in the initial printing and long-life printing process, which requires the color toner used Particles...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/097
CPCG03G9/09733G03G9/09725
Inventor 刘奎刘玉波
Owner GUANGZHOU VIVID PRINT MATERIAL
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