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Method of manufacturing ink powder by supercritical fluid dissolving spraying technology

A supercritical fluid and supercritical technology, applied in the field of toner manufacturing, can solve the problems of large heat consumption and less than 5% market share.

Inactive Publication Date: 2008-06-04
刘树果 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production of toner by this method requires a large amount of clean water to wash the aggregated powder. Usually, the production of one ton of toner consumes nearly a hundred tons of water, and a large amount of heat energy is also consumed for drying the washing powder.
At present, the market share of such toner products is less than 5%.

Method used

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  • Method of manufacturing ink powder by supercritical fluid dissolving spraying technology
  • Method of manufacturing ink powder by supercritical fluid dissolving spraying technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 , as shown in Figure 2:

[0021] (A) According to the composition of traditional production toner in the batching system 1, the following mass ratios are used for the single-component insulating black and color toner: 100 parts of hot-melt resin, 5-120 parts of pigment or dye, 2~6 parts of charge control agent and 0~5% of carbon dioxide solvent as the carrier agent are ready for use; if waste black or color toner is used as raw material for recycling, 100 parts of screened and available toner should be used , reheat 0-20 parts of meltable resin, 0-30 parts of pigment or dye, and 0-4 parts of charge control agent for use.

[0022] The above-mentioned prepared material can be added in the dissolving kettle 3 in advance, then carbon dioxide is added and the air in the kettle is discharged. The particle size of the magnetic powder used as a coloring additive for one-component magnetic insulating toner is generally controlled at 0.1-0.3 microns, the partic...

Embodiment 2

[0028] The difference between this example and Example 1 is that in step A, the hot-melt organic resin that constitutes the main component of the toner and acts as an adhesive is not directly added to the batching system 1 in the form of batching, but is synthesized in the dissolution tank . In the dissolving tank, carbon dioxide supercritical fluid is used as the medium of hot-melt resin polymerization reaction. By controlling the pressure and temperature of carbon dioxide supercritical fluid, dispersion polymerization of styrene-acrylate copolymer and synthesis of polyester resin can be realized. The most commonly used styrene-acrylic copolymer can refer to Desimone's work experience. Methacrylate and styrene are used as monomers, and azobisisobutyronitrile is used as an initiator. It can be selected in supercritical carbon dioxide at 65°C and 204Pa. The block copolymer of 1,1-dihydroperfluorooctylacrylic acid and styrene is used as a dispersant to realize polymerization.

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Abstract

A process for preparing its powder by supercritical fluid dissolving and spraying technique includes such steps as conventionally mixing raw materials, adding the mixture to dissolving reactor, adding CO2, heating to make CO2 in supercritical state and dissolving, spraying solution out to become ink powder and usnig SiO2 to wrap ink particle.

Description

technical field [0001] The present invention relates to a manufacturing method of toner. Background technique [0002] At present, the imaging toner (TONER) used in electrostatic copiers and laser printers is mostly manufactured by mechanical method, usually by mixing, kneading, pulverizing, grading and applying hydrophobic type II to the surface of the powder particles. Such products account for more than 95% of the toner market and are the mainstream products in the toner manufacturing industry. Due to its complex process, large energy consumption during mixing and crushing, etc., the production cost is high, which is especially unfavorable for the popularization and application of solid toner instead of liquid ink in the printing industry. [0003] In addition, toners produced by chemical polymerization have been listed. For example, the one-component non-magnetic toner produced by Brother Company in Japan is a typical product produced by polymerization. It is character...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G9/087C01B32/55C09C3/06
CPCY02P20/54
Inventor 刘树果刘漫丹刘漫青
Owner 刘树果
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