A strong-fixing toner and a method for producing the same

By crosslinking the adhesive resin formed by the polymerization of styrene, glycidyl methacrylate, and n-butyl methacrylate with isophorone diisocyanate, combined with fumed silica and a release agent, the problem of balancing the fixing and release properties of toners is solved, achieving stable adhesion and good heat resistance.

CN119472196BActive Publication Date: 2026-06-30ZHUHAI HAOYINBAO PRINTING CONSUMABLES CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHUHAI HAOYINBAO PRINTING CONSUMABLES CO LTD
Filing Date
2024-11-07
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Traditional toners have difficulty balancing fixing and release properties, resulting in poor fixation on image carriers and easy detachment or diffusion.

Method used

A bonding resin is formed by polymerizing styrene, glycidyl methacrylate, and n-butyl methacrylate, and isophorone diisocyanate is added for crosslinking. Combined with fumed silica and a release agent, the glass transition temperature and molecular weight distribution of the bonding resin are controlled, and external additives are used to improve flowability and adhesion.

Benefits of technology

It achieves stable adhesion of the toner to the image carrier, is not easy to fall off or spread, has excellent fixing and release properties, and good heat resistance.

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Abstract

This invention relates to a toner with strong fixing properties, specifically to toners used in electrostatic image development for printers, copiers, and other applications. A toner with strong fixing properties comprises the following raw materials in parts by weight: 70-85 parts of adhesive resin; 4-7 parts of colorant; 2-3 parts of charged additive; 2-5 parts of external additive; and 6-9 parts of release agent. The adhesive resin is prepared from the following raw materials in parts by weight: 3-8 parts of glycidyl methacrylate; 75-80 parts of styrene; 15-25 parts of n-butyl methacrylate; 1-3 parts of isophorone diisocyanate; and 0.5-1 part of initiator. This application balances the fixing and release properties of the toner, exhibiting excellent fixing and fixation fastness.
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