Brilliant Toner Carrier Coating Surfactant Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In electrophotography, brilliant toners with toner particles having an average equivalent circle diameter longer than the average maximum thickness exhibit instability on recording media, leading to color unevenness due to disordered arrangements during fixation, especially when moisture is evaporated.
Innovation Solution
An electrostatic charge image developer comprising a brilliant toner with a toner particle having an average equivalent circle diameter longer than the average maximum thickness, combined with a carrier coated with a resin and surfactant, where the surfactant content is between 50 ppm to 200 ppm, improving the toner's affinity to the recording medium and reducing color unevenness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If brilliant toner particles with equivalent circle diameter longer than maximum thickness are used, then image brilliance is improved, but toner arrangement stability deteriorates leading to color unevenness
Solution Approach 1:
A surfactant is introduced as an intermediary substance between the brilliant toner particles and the carrier coating layer. The surfactant content in the coating layer is controlled at 50-200 ppm to mediate the interaction, improving toner arrangement stability while preserving the brilliance effect of the elongated toner particles.
Solution Approach 2:
The chemical composition parameter of the carrier coating layer is changed by adding surfactant. This parameter change modifies the surface properties of the coating layer, enabling better control over toner particle arrangement during fixation without altering the fundamental structure of the brilliant toner particles.
2Stability of the object's composition
If surfactant content in carrier coating layer is increased, then toner arrangement stability is improved, but manufacturing complexity increases
Solution Approach 1:
The surfactant content is optimized to a specific range (50-200 ppm) that provides sufficient stabilization effect while avoiding excessive complexity in manufacturing. This parameter optimization balances performance improvement with manufacturing feasibility.
Solution Approach 2:
Instead of using large amounts of surfactant that would greatly complicate manufacturing, a small but sufficient amount (50-200 ppm) is added to the coating layer. This partial action achieves the necessary stabilization effect with minimal impact on manufacturing processes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The use of a surfactant in the coating layer of the carrier enhances the arrangement of brilliant toners, preventing color unevenness by improving water and water vapor affinity, resulting in a more stable and uniform image formation.
Implementation Method 1
the coating layer contains a resin and a surfactant, and a content of the surfactant is in a range of 50 ppm to 200 ppm with respect to the entire weight of the carrier
Implementation Method 2
improving the toner's affinity to the recording medium and reducing color unevenness
Data Source
AI summary
An electrostatic charge image developer includes a brilliant toner that includes a toner particle having an average equivalent circle diameter D longer than an average maximum thickness C and a carrier that includes a core particle and a coating layer which covers a surface of the core particle, wherein the coating layer contains a resin and a surfactant, and a content of the surfactant is in a range of 50 ppm to 200 ppm with respect to the entire weight of the carrier.