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Acrylic resin, carrier coated with the resin, and two-component developer

A technology of acrylic resin and methacrylic acid, which is applied in the directions of developer, instrument, optics, etc., can solve the problems of low hygroscopicity, poor environmental stability, poor durability, etc., and achieve reduced resistance, excellent effect, and good durability Effect

Active Publication Date: 2019-12-31
HUBEI DINGLONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polycyclohexyl methacrylate is contained in the coating layer of the resin-coated carrier disclosed in Patent Document 2, the hygroscopicity is low, but compared with polymethyl methacrylate, the adhesion between polycyclohexyl methacrylate and the magnetic core material Low strength, high brittleness, the coating layer is easy to fall off when used for a long time, and the durability is poor
Although poly(cyclohexyl methacrylate-methyl methacrylate) copolymer is contained in the coating layer of the resin-coated carrier disclosed in Patent Document 3, when the mixing ratio of methyl methacrylate is increased, the obtained environmental stability deteriorates. , the durability and environmental stability required by the carrier cannot be achieved at the same time

Method used

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  • Acrylic resin, carrier coated with the resin, and two-component developer
  • Acrylic resin, carrier coated with the resin, and two-component developer
  • Acrylic resin, carrier coated with the resin, and two-component developer

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Effect test

Embodiment 1～12

[0067] The above-mentioned "resin-coated carriers 1-12" and "toner" were mixed in the following manner to prepare the two-component "developers 1-12" of the example. Mix 92 parts of carrier and 8 parts of toner in a mixer for 10 minutes to prepare a two-component developer; at the same time, mix 95 parts of "toner" with 5 parts of "resin-coated carrier 1-12" above to prepare supplementary developer.

Embodiment 13

[0102] Mix 8 parts each of yellow toner, magenta toner, cyan toner, and black toner with 92 parts of resin-coated carrier 1 respectively, and mix each in a mixer for 10 minutes to prepare a 4-color double-pack Separate developer. At the same time, 95 parts each of yellow toner, magenta toner, cyan toner, and black toner were mixed with 5 parts of resin-coated carrier 1 respectively to prepare 4-color supplementary developers.

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Abstract

The invention provides acrylic resin, a carrier coated by resin, and a double-composition developer. The acrylic resin is prepared by performing emulsion polymerization on an unsaturated monomer composition under existence of a surfactant, and then performing aggregation, washing, filtering, drying and crushing. The unsaturated monomer composition at least comprises vinyltrimethoxy silane and cyclohexyl methacrylate. The coated carrier is obtained by taking the acrylic resin as bonding resin for coating a magnetic core material, and the carrier can be used to prepare the double-composition developer. Through the synergic effect of the compositions, the bonding force between the acrylic resin and the magnetic core material coated by the resin is strong, the resin-coated carrier is low in environment dependence, and the double-composition developer composed of the resin-coated carrier and a tinting color is high in stability and good in durability.

Description

technical field [0001] The invention relates to a resin for covering a carrier used in the field of electrostatic charge image development, a resin-coated carrier, and a two-component developer containing the resin-coated carrier. Background technique [0002] The two-component developer has the characteristics of good controllability, stable toner charge amount, and easy acquisition of high-quality images due to the separation of carrier and toner functions. The carrier of the two-component developer includes a magnetic carrier without a coating layer and a resin-coated carrier with a coating layer. The long-term continuous friction between the non-coated magnetic carrier and the toner will generate heat, which will easily cause the toner to melt and adhere to the surface of the carrier, resulting in the failure of the toner. Therefore, the resin-coated carrier coated with resin on the surface of the magnetic core material becomes The mainstream of the carrier. [0003] T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G9/087G03G9/113
CPCG03G9/08722G03G9/113
Inventor 朱顺全黎文部
Owner HUBEI DINGLONG CO LTD
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