toner
By introducing calcium carbonate particles with a specific crystal structure into the toner particles and enhancing their interaction with the binder resin, the compatibility problem between the toner's low-temperature fixing performance and scratch resistance is solved, achieving efficient image fixing and preventing toner migration.
Patent Information
- Application Number
- CN202111496272.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2021-10-29
- Filing Date
- 2021-12-09
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2041-12-09
AI Technical Summary
After improving the low-temperature fixability, existing toners still have the problem of insufficient scratch resistance, especially in the part with low image density where toner migration is likely to occur.
By introducing calcium carbonate particles with a specific crystal structure into the colorant particles and utilizing the strong interaction between the calcium carbonate particles and the binder resin, the cohesion of the toner is enhanced. Specific measures include controlling the crystallite diameter and peak intensity ratio of the calcium carbonate particles, and enhancing the contact between the step surface of the calcium carbonate particles and the binder resin through melt mixing and mechanical crushing.
It achieves good fixing performance of the toner at low temperatures, while improving the scratch resistance and preventing the migration of toner in the low-density part of the image, meeting the needs of high-speed printing and printing on a variety of media.