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Magnetic one-component developer for high-speed electrostatic copier

A copier, one-component technology, applied in developer, electrography, optics, etc., can solve the problems of low resolution, sticking, poor thermal stability, etc., and achieve wide versatility, low cost, image density high effect

Inactive Publication Date: 2015-11-25
NANJING TESHINE IMAGING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of developer and colorant is not easy to cooperate with the oxide, the main reason is that the dielectric constant of the oxide is not high, the thermal stability is not good, and there are still black background, low resolution, sticky drums, and unclear image levels when used with high-speed copiers. And other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of Electronegative Magnetic One-Component High-speed Developer

[0028] Element:

[0029] Styrene-acrylic polymer (manufactured by China Tianjin Synthetic Materials Industry Research Institute: SMA-871 resin): 40-50 parts;

[0030] Magnetic powder (E8706 manufactured by LANXESS, Germany): 40-50 parts;

[0031] Polypropylene wax (manufactured by Mitsui Chemicals: NP-505): 1-2 parts;

[0032] Paraffin (manufactured by NipponSeiro, Japan: HNP-11): 1 to 2 parts;

[0033] Negative charge control agent (manufactured by Dinglong Chemical in Hubei, China: N22): 0.5 to 1 part;

[0034] Fumed silica (manufactured by Cabot, USA: TS-530) 0.5-1 part;

[0035] 0.3-1 part of strontium titanate (manufactured by Japan Titan Kogyo: SW-100).

[0036] preparation:

[0037] Pre-mixing: Put the above-mentioned measured styrene-acrylic polymer, magnetic powder, polypropylene wax, paraffin wax, and charge control agent into a high-speed mixer for mixing. First, mix at low spe...

Embodiment 2

[0048] Preparation of Electropositive Magnetic One-Component High-speed Developer

[0049] Element:

[0050] Styrene-acrylic polymer (manufactured by China Tianjin Synthetic Materials Industry Research Institute: SMA-021 resin): 40-50 parts;

[0051] Magnetic powder (E8706 manufactured by LANXESS, Germany): 40-50 parts;

[0052] Polypropylene wax (manufactured by Mitsui Chemicals: NP-505): 1-2 parts;

[0053] Paraffin (manufactured by NipponSeiro, Japan: HNP-11): 1 to 2 parts;

[0054] Positive charge control agent (manufactured by Dinglong Chemical in Hubei, China: N15): 0.5 to 1 part;

[0055] Fumed silica (manufactured by Cabot, USA: TS-530) 0.5-1 part;

[0056] 0.3-1 part of strontium titanate (manufactured by Japan Titan Kogyo: SW-100).

[0057] preparation:

[0058]Pre-mixing: Put the above-mentioned measured styrene-acrylic polymer, magnetic powder, polypropylene wax, paraffin wax, and charge control agent into a high-speed mixer for mixing. First, mix at low spee...

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PUM

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Abstract

The invention discloses a single-component developer for a high-speed electrostatic copying machine. The single-component developer is prepared by raw materials including, by weight, from 40 to 50 parts of styrene and acrylic acid polymers, from 40 to 50 parts of magnetic powder, from 1 to 2 parts of polypropylene wax, from 1 to 2 parts of paraffin, from 0.5 to 1 part of charge control agent, from 0.5 to 1 part of fumed silica and from 0.3 to 1 part of strontium titanate, treatments including premixing, extrusion milling in a mixed manner, cooling, crushing, airflow crushing and classifying, micro-powder classifying and addition mixing are sequentially realized for the materials, and finally a developer product is prepared by means of sieving and packaging. The magnetic single-component developer for the high-speed electrostatic copying machine is high in universality, low in cost and high in imaging density, and can be prepared to have positive electric property and positive magnetic property.

Description

technical field [0001] The invention relates to a magnetic single-component developer for a high-speed electrostatic copier, belonging to the technical field of developers. Background technique [0002] With the increase in the number of information processing and the demand for efficiency improvement, digitization, high-speed, and colorization of electrostatic copiers have become a trend. In the application of electrostatic printing technology, the magnetic one-component developing method has been adopted by mainstream companies such as Canon photocopying equipment in Japan due to its simple machine structure and reliable use. Correspondingly, the magnetic one-component developer used in it is The demand is also increasing. At present, the magnetic one-component photoprinting agent has relatively stable components, mainly including resin material, magnetic agent, paraffin, charging agent and alkaline earth metal oxide, but it also has corresponding defects. [0003] First...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G9/08G03G9/097G03G9/107
Inventor 高军周建兴朱决高涛杨道怀徐建兴
Owner NANJING TESHINE IMAGING TECH