Universal powdered ink

A general purpose, toner technology

Inactive Publication Date: 2012-08-01
甘肃宏德嘉信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of poor uniformity of existing toner p

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Will Fe 3 o 4 Put the powder into the high-pressure melting kettle, turn on the vacuum pump to evacuate the air in the kettle, then turn off the vacuum pump, and turn on the high-pressure pump to evacuate the CO 2 Inject into the high-pressure melting kettle, and adjust the temperature in the kettle to be higher than 31.1°C and the pressure to be higher than 7.4MPa. At this time, CO 2 It will be in a supercritical state, start the stirring device, and the stirring speed is 1000 r / min, and a filter screen 21 is installed in the high-pressure melting kettle 2. During the stirring process, particles less than or equal to 3.0 μm will pass through the filter screen 21;

[0025] The material (containing 50 grams of Fe 3 o 4 ) into the reaction kettle, the reaction kettle is equipped with electrodes and connected to the positive and negative electrodes of the DC power supply through wires, and then 20 grams of polyacrylate-styrene copolymer, 20 grams of charge regulator, 4 ...

Embodiment 2

[0029] The difference from Example 1 is that the material (containing 60 grams of Fe 3 o 4 ) after pumping into the reactor, then 15 grams of methyl acrylate, 5 grams of styrene, 1 gram of initiator AIBN, 10 grams of charge regulator, 6 grams of styrene-acrylic resin and 4 grams of iron oxide powder, Start the stirring device at a stirring speed of 1000 r / min. After the copolymerization reaction at a temperature of 80°C for 30 minutes, turn on the switch of the DC power supply and pass a direct current to the mixed material for 30 minutes. The direct current voltage is 800V. During the stirring process, electrostatic charges are generated on the surface of the particles.

[0030] All the other steps are basically the same as in Example 1.

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PUM

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Abstract

The invention provides universal powdered ink, which comprises the following components in percentage by weight: 50-60 percent of Fe3O4 powder, 20-30 percent of polyacrylate-styrol copolymer, 10-20 percent of charge control agent, 4-6 percent of styrene-acrylic resin and 4-6 percent of ferric oxide. The universal powdered ink is obtained by the following steps that: the Fe3O4 powder is processed by supercritical CO2, and then is mixed with other raw materials, then the mixture is subjected to electric treatment of direct current, and finally, spray, drying, cyclone separation and mixing are carried out in sequence. The development imaging of the universal powdered ink is clear, bottom ash does not exist, and the quality and the stability of printed products are increased. The melting point is low, and the electric energy loss of a copier is greatly reduced. The particle of universal powdered ink is neat and uniform in shape, and therefore the universal powdered ink is suitably used for various machine types. The energy is saved and the environment is protected.

Description

technical field [0001] The present invention relates to a general-purpose toner. Background technique [0002] In the production and processing of toner, the synthetic raw material of toner is one of the core processes in the universal production process of toner. The synthetic raw material of toner directly affects the quality of the product, especially for the control of toner particle size, uniformity of synthesis, etc. Indicators have a greater impact. The first production method of toner is chemical polymerization, which is mainly used to produce color toner, and the product only accounts for about 5% of the market share. The second is the mechanical method, which is the mainstream production method in the world today. The toner produced by this method accounts for about 95% of the market share. The mechanical method has been recognized as the most mature technology for toner production today. The raw materials and processing equipment that are dependent on this metho...

Claims

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Application Information

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IPC IPC(8): G03G9/08G03G9/097
Inventor 包国存张兴凯
Owner 甘肃宏德嘉信息科技有限公司
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