A kind of color toner and preparation method thereof

Abstract

The invention discloses a color toner, which comprises the following components in parts by weight: 60-80 parts of styrene; 15-25 parts of butyl acrylate; 3-7 parts of composite wax; 3-6 parts of pigment; 0.2~1.5 parts of agent; 1~2 parts of ammonium persulfate; 0.1~2 parts of molecular weight regulator; 1.0~3.0 parts of surfactant; 1~4 parts of silicon dioxide; or two or more of C80 paraffin waxes; the present invention can properly reduce the polymerization speed by adding composite wax in the emulsion preparation stage, compared with the use of a single wax, so that its toughness and printing durability are improved; in addition, the composite wax It can reduce the cost and make the color toner have better emulsification, better gloss, better hardness and better stability; and the particle size distribution is narrow, the average particle size D50 is 5~8μm, making the particle size diameter is easy to control.

Description

technical field [0001] The invention relates to the application field of electrostatic imaging technology, in particular to a color toner for copiers and printers and a preparation method thereof. Background technique [0002] Color toner is a key consumable for color laser printing and color digital copying, mainly composed of resin, pigment, additives, etc. With the development of information technology, network technology, office automation and modernization, as well as the popularization of laser printers, laser digital copiers, and digital cameras, and the development in the direction of digitization and colorization, the demand for color toner is increasing. Quality requirements are also getting higher and higher. [0003] At present, the preparation methods of color toner mainly fall into two categories: physical method and chemical polymerization method. The physical method, also known as "melting method", is to heat and knead resin (mainly styrene-butyl acrylate c...

AI Technical Summary

Problems solved by technology

However, the disadvantage of the "suspension polymerization method" is that the wide particle size distribution of the color toner makes the printing and copying resolution and color poor, and the color toner particles are too round, which leads to the recovery and cleaning of the color toner remaining on the photoreceptor. difficulty

Zhou Xueliang, Zhang Weigang, Zhou Dongliang, etc. used in-situ emulsion polymerization to prepare color toner for printers and copiers. By selecting styrene, butyl acrylate, polyester resin, polypropylene wax, azo pigments, charge regulators, and azobis Raw materials such as isobutylcyanide, surfactant and silicon dioxide are made of color toner through steps such as reaction, separation, cleaning, drying and modification; however, there are few literatures and reports on the research of wax in emulsion polymerization. In particular, the complex wax is mixed evenly in the emulsion preparation stage, thereby improving the printing durability of the color toner, and finally improving the quality of the color toner. There are few reports