Preparation method for low-temperature fixing chemical ink powder resin and method for preparing ink powders

Abstract

The invention belongs to the field of ink powders, and relates to a preparation method for low-temperature fixing chemical ink powder resin and a method for preparing ink powders. The preparation method for low-temperature fixing chemical ink powder resin comprises the steps of: 1, preparing a seed emulsion; 2, preparing low-molecular and high-molecular low-temperature fixing emulsion resin; and 3, proportioning the low-molecular and high-molecular low-temperature fixing emulsion resin and adjusting the solid content to 33.0% to obtain low-temperature fixing chemical link powder resin. The method for preparing ink powders comprises the steps of: taking 20-50% of low-temperature fixing chemical link powder resin, 1-5% of a pigment, 1-3% of a CCA dispersion liquid, 1-3% of a wax emulsion and 40-70% of water; adding dilute sulphuric acid; raising the temperature and keeping the temperature for 1-3 hours; adding sodium hydroxide to adjust the pH to 6-8; and then raising the temperature, keeping the temperature, reducing the temperature and drying the mixture to obtain finished product low-temperature fixing chemical ink powders. The preparation method provided by the invention is environmentally-friendly and pollution-free in production process and low in production cost, and is suitable for preparing the low-temperature fixing chemical ink powders; the prepared ink powders are suitable for a majority of low-temperature fixing energy-saving laser printers / copiers, and are good in fixing effect, high in transfer rate, excellent in color density and excellent in electrical property.

Description

technical field [0001] The invention belongs to the field of chemical toner, in particular relates to a laser printer or copier toner, and relates to a method for preparing a low-temperature fixing chemical toner resin and a method for preparing the toner. Background technique [0002] With the rapid development of the IT industry, higher requirements are put forward for the technology of copiers and printers. On the one hand, the quality of printed pictures is required to be exquisite, and on the other hand, the speed of printing and copying is required to be faster, which can save time and energy. With the increasing requirements for energy saving and environmental protection, major companies such as HP and XEROX have launched copying and printers with low-temperature fixing to reduce the energy consumption of printers. [0003] Copiers and printers with low-temperature fixing need corresponding low-temperature fixing toner. There are two ways to effectively solve the pro...

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Problems solved by technology

[0008] In order to overcome the above-mentioned deficiencies, the purpose of the present invention is to provide the art with a method for preparing low-temperature fixing chemical toner resin and a method for preparing toner, so that it solves the problem of using a large amount of mercaptan chains when preparing chemical toner resin. Transfer agent, causing the odor of subsequent printing, and the chemical toner resin with too low molecular weight is prone to sticking during the coagulation particle setting process, which affects the shape of the toner, and the prepared low molecular weight toner is easy to produce sticky rollers during rapid fusing Phenomenon, low molecular weight toner is not conducive to environmental storage, additive particles are embedded in the toner during the transportation process to cause failure, and the technical problem of toner is easy to agglomerate

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