Fluorescent Ink Gloss Control via Multi-Scan Ratio Segmentation
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Solution Overview
Problem
Current printing technologies do not effectively control glossiness using fluorescent inks, which limits their application in achieving desired visual effects in printed materials.
Innovation Solution
A printing apparatus and method that employs a nozzle array for both fluorescent and non-fluorescent inks, with a decision unit controlling the ink application ratios to ensure the fluorescent ink's coloring material is less on the surface than within the ink layer, allowing for controlled glossiness management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If fluorescent ink is applied to printing medium, then color vividness is improved, but glossiness control capability deteriorates
Solution Approach 1:
The ink application process is segmented into multiple scans with different ink application amount ratios. The decision unit divides the fluorescent ink application into first through fourth scans with progressively decreasing ratios, allowing separate control of color development (early scans) and glossiness control (later scans).
Solution Approach 2:
The ink application amount ratio of fluorescent ink is dynamically changed across different scans. The ratio decreases from the first scan to the fourth scan, transforming the parameter of ink application quantity to achieve different functional outcomes at different stages of the printing process.
2Manufacturing precision
If multiple scans are performed with varying ink application ratios, then glossiness control precision is improved, but printing process complexity increases
Solution Approach 1:
The decision unit pre-calculates and determines the ink application amount ratios for all scans before the printing process begins. This preliminary determination of ink ratios simplifies the actual printing execution by eliminating real-time complex calculations during the scanning process.
Solution Approach 2:
The printing system uses a universal nozzle array that handles both fluorescent and non-fluorescent inks, and the same printing apparatus performs both color development and glossiness control functions through different ink application strategies, eliminating the need for separate dedicated systems.
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
Enables precise control over glossiness in printed materials, enhancing visual appeal by reducing surface gloss while maintaining color development, thus addressing the limitations of existing technologies.
Implementation Method 1
an ink (fluorescent ink) using a fluorescent coloring material may be used for printing a display piece such as a poster and the like
Data Source
AI summary
A printing apparatus comprises a decision unit configured to decide a ratio of ink application amounts of the fluorescent ink and the other ink respectively in each of the plurality of scans. The decision unit decides the ratio of the ink application amount of the fluorescent ink in each of the plurality of scans so that the amount of the coloring material of the fluorescent ink in a surface of an ink layer of the printing medium is less than the amount of the coloring material of the fluorescent ink in an inside of the ink layer of the printing medium.