Toner for electrostatic charge image development, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, image forming method, and print

A toner with a high-melting release agent and appropriately sized inorganic antibacterial agent addresses antiviral and stability issues, providing superior image quality and durability.

JP2025117418APending Publication Date: 2025-08-12FUJIFILM BUSINESS INNOVATION CORP
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Patent Information

Application Number
JP2024012245
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-01-30
Publication Date
2025-08-12

AI Technical Summary

Technical Problem

Existing toners with low-melting release agents and inappropriate inorganic antibacterial agent sizes or contents fail to provide adequate antiviral properties and long-term image quality stability.

Method used

A toner formulation containing a binder resin, a release agent with a melting point of 90°C or higher, and an inorganic antibacterial agent with a volume average particle size of 0.05 μm to 0.5 μm, with specific content ratios to ensure proper dispersion and exposure, thereby enhancing antiviral properties and image stability.

Benefits of technology

The toner achieves excellent antiviral properties and long-term image quality stability by ensuring the release agent and antibacterial agent are properly dispersed, preventing surface coverage and aggregate formation, which enhances image quality and durability.

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Patent Text Reader

Abstract

To provide a toner for electrostatic charge image development excellent in image quality stability for a long period with which an image excellent in anti-viral properties is obtained.SOLUTION: A toner for electrostatic charge image development includes a binder resin (A), a mold release agent (B) having a melting point of 90°C or more, and an inorganic antibacterial agent (C) having a volume average particle diameter of 0.05 μm or more and 0.5 μm or less.SELECTED DRAWING: None
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Citation Information

Patent Citations

  • Transparent toner, coating method using the toner, image body, and electrophotographic image forming device

    JP2003241414A

  • Image forming method, toner, developer, printed material, toner storage unit, and image forming apparatus

    JP2022122546A