Toner for developing electrostatic images

The toner formulation with amorphous and crystalline polyester resins, produced using specific catalysts, enhances print durability and fixing properties across temperature variations, addressing the durability challenges of conventional toners.

JP2026093676APending Publication Date: 2026-06-09KAO CORP
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
KAO CORP
Filing Date
2024-11-28
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Toner formulations using crystalline and amorphous polyester resins exhibit reduced print durability in high-temperature environments due to softening, compromising continuous printing performance.

Method used

A toner formulation incorporating amorphous polyester resin A, produced with a titanium compound, and crystalline polyester resin C, made with a tin compound, enhances print durability by promoting fine-dispersion crystallization and relaxing ionic bonding, ensuring stability across temperature variations.

Benefits of technology

The toner achieves excellent low-temperature fixing properties and maintains print durability even in high-temperature conditions, addressing the durability issues of conventional toners.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 2026093676000001
    Figure 2026093676000001
  • Figure 2026093676000002
    Figure 2026093676000002
  • Figure 2026093676000003
    Figure 2026093676000003
Patent Text Reader

Abstract

To provide a toner for electrostatic image development that offers excellent print durability in high-temperature environments. [Solution] A toner for developing electrostatic images, comprising toner particles containing a binder resin, The aforementioned binder resin, Amorphous polyester resin A is a polycondensate of raw material monomer A containing an alcohol component, a carboxylic acid component, and polyethylene terephthalate in the presence of a titanium compound, and A toner for developing electrostatic images, comprising a crystalline polyester resin C, which is a polycondensate of raw material monomer C containing an alcohol component and a carboxylic acid component in the presence of a tin compound.
Need to check novelty before this filing date? Find Prior Art