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Production method of spherical toner

A manufacturing method and toner technology, which can be applied in the directions of developer, electrography, optics, etc., can solve the problems of difficult residence time, complex structure, powder adhesion and uneven spheroidization, etc.

Inactive Publication Date: 2008-09-24
ZHUHAI FREE TRADE ZONE NEOJET APOLLOJET IMAGING MATERIALS
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Problems solved by technology

The structure of the device is complicated, the noise is loud, and a large amount of dust will be generated during the spheroidization process
In addition, the thermal spheroidization process in this method is carried out in a hot air flow, and the residence time of the toner particles in the hot air flow is short and difficult to control. In addition, it is difficult to control the temperature of the air flow, so it is easy to cause manufacturing adjustments. Cohesion and uneven spheroidization of powder for toner

Method used

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  • Production method of spherical toner
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specific Embodiment

[0026] Take 5 parts by weight of magenta toner (TE01) with a particle size range of 5-20 μm after airflow classification and a softening point temperature of 85° C. into the container, add 50 parts by weight of industrially pure water, It is best to add a small amount of surfactant, such as 0.1-0.5 parts of sodium dodecylbenzenesulfonate, disperse with ultrasonic waves for 10-20 minutes, take samples and observe the dispersion effect and particle shape under a biological microscope. Such as figure 1 As shown, the toner powder at this time is in an irregular shape with edges and corners. Put the container containing the dispersion into a constant temperature water bath at 90-100°C, and at the same time stir with an electric mixer at a speed of 250 rpm for about 5 hours, then stop stirring. At this time, samples were taken and observed under a microscope, such as figure 2 As shown, the shape of the toner is spherical or ellipsoidal. The finished spherical toner can be obtain...

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Abstract

A spherical toner manufacturing method comprises a heating glomeration working procedure that irregular shaped toner powder is spread in water and is heated and mixed to ensure the glomeration of the irregular shaped toner power and a post processing working procedure that a product obtained from the heating glomeration working procedure is filtered, washed and dried to obtain the toner. The spherical toner manufacturing method has the advantages of the simple method and the practicability etc.

Description

technical field [0001] The invention relates to a manufacturing method of a toner, especially a manufacturing method of a spherical toner. Background technique [0002] Existing electronic imaging methods usually first form an electrostatic latent image on a photoreceptor, then use a toner to develop the latent image, then transfer the toner image to a copy material such as paper, and finally heat, Pressurized and fixed, thereby realizing printing. [0003] The traditional toner manufacturing method is to fully mix raw materials such as binder resin, colorant, wax and charge control agent, and then make toner through processes such as melting, kneading and kneading, coarse pulverization, ultrafine pulverization, and airflow classification. . This method is relatively mature in technology, but because the produced toner is processed by pulverization, the particle shape is irregular, the specific surface is large, and it is easy to agglomerate due to static electricity, resu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/08G03G9/097
Inventor 张秀山汤付根
Owner ZHUHAI FREE TRADE ZONE NEOJET APOLLOJET IMAGING MATERIALS
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