Imaging System Gloss Treatment via Toner Wax Content Adjustment
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Solution Overview
Problem
In imaging systems, achieving consistent and controlled gloss treatment on paper after forming color and clear toner images is challenging, particularly in ensuring the clear toner image region has higher glossiness than the color toner image region without compromising the peeling-off process.
Innovation Solution
The system adjusts the wax content in clear and color toners, with less wax in clear toners to increase gloss in clear toner image regions and reduce gloss in color toner image regions, utilizing a gloss treatment device with a re-melting and cooling process to control the duration of toner contact with a conveying belt for optimal gloss transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the wax content in clear toner is reduced to increase glossiness in clear toner regions, then the gloss difference between clear and color toner regions is improved, but the peeling-off performance may deteriorate
Solution Approach 1:
The patent applies different wax contents to different toner types (clear toner vs. color toner) to achieve local optimization. Clear toner has reduced wax content (0-5 parts by weight per 100 parts resin) to maximize glossiness, while color toner maintains higher wax content for adequate peeling-off performance. This local differentiation resolves the contradiction by allowing each toner type to be optimized for its specific function.
Solution Approach 2:
The patent changes the wax content parameter in clear toner from conventional levels (5-20 parts per 100 parts resin) to a reduced level (0-5 parts per 100 parts resin). This parameter modification enables the clear toner to achieve superior glossiness while the color toner compensates for peeling-off performance, resolving the gloss-peeling contradiction through parameter optimization.
2Illumination intensity
If the wax content in clear toner is reduced to enhance gloss transfer, then the visual recognition of clear toner regions is improved, but the control of gloss consistency becomes more difficult
Solution Approach 1:
The patent establishes a controlled feedback mechanism by precisely defining the wax content range (0-5 parts per 100 parts resin) and monitoring the gloss development during the imaging process. This controlled approach allows the system to maintain gloss consistency while achieving enhanced visual recognition, as the wax content is optimized to provide sufficient contrast without causing excessive variability.
Solution Approach 2:
The patent modifies the wax content parameter within a specific range (0-5 parts per 100 parts resin) to achieve optimal visual recognition while maintaining gloss consistency. This controlled parameter change ensures that the clear toner provides adequate contrast against the background without creating excessive gloss variation, resolving the contradiction between visual recognition and gloss consistency.
3Illumination intensity
If the toner contact time with conveying belt is extended to improve gloss transfer, then the glossiness in clear toner regions is enhanced, but the productivity of the imaging system decreases
Solution Approach 1:
The patent changes the wax content parameter in clear toner to reduce the required contact time for adequate gloss transfer. With lower wax content (0-5 parts per 100 parts resin), the clear toner achieves glossiness more rapidly during the conveying process, allowing the system to maintain high imaging speeds while still achieving the desired gloss effect, thus resolving the gloss-productivity contradiction.
Solution Approach 2:
The patent applies a partial reduction in wax content specifically in clear toner (0-5 parts per 100 parts resin) rather than completely eliminating it. This partial action is sufficient to achieve the desired gloss enhancement and reduce contact time requirements, thereby improving productivity without completely sacrificing gloss quality.
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
This approach effectively enhances the visual recognition of font sizes and line widths in clear toner regions while minimizing poor gloss areas, ensuring consistent and controlled gloss levels across different image regions.
Implementation Method 1
gloss treatment by melting the color toner and the clear toner
Implementation Method 2
control the duration of toner contact with a conveying belt for optimal gloss transfer
Data Source
AI summary
An imaging system includes a toner image forming device and a gloss treatment device. The toner image forming device accommodates a color toner that forms a color toner image on a printing medium, and which accommodates a clear toner that forms a clear toner image on the printing medium. The clear toner has a wax content that is lower than a wax content of the color toner. The gloss treatment device melts the clear toner on the printing medium to apply gloss treatment to the printing medium including the color toner image and the clear toner image.