Fluorescent and Clear Ink Printing for Saturation-Luminescence Control
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Solution Overview
Problem
Existing printing technologies cannot independently control the saturation and luminescence intensity of images using fluorescent ink, as increasing or decreasing the application amount of fluorescent ink simultaneously affects both properties, leading to unadjustable results.
Innovation Solution
A printing apparatus that applies a first ink containing a fluorescent color material and a second ink containing a resin, with a decision unit determining the amount of the second ink based on the first ink's application and luminescence intensity, allowing independent control of saturation and luminescence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the application amount of fluorescent ink is increased to enhance saturation, then the saturation is improved, but the luminescence intensity decreases due to concentration quenching
Solution Approach 1:
The invention divides the ink application into two separate components: fluorescent ink for saturation control and clear ink containing resin for luminescence enhancement. By segmenting the functions, the patent eliminates the trade-off between saturation and luminescence intensity that occurs when using fluorescent ink alone.
Solution Approach 2:
The clear ink containing resin acts as an intermediary substance that does not interfere with the fluorescent properties. The resin in the clear ink serves as a mediator to enhance luminescence intensity without affecting the saturation provided by the fluorescent ink, allowing both properties to be optimized simultaneously.
2Illumination intensity
If the application amount of fluorescent ink is decreased to enhance luminescence intensity, then the luminescence intensity is improved, but the saturation decreases
Solution Approach 1:
The invention separates the control of saturation and luminescence intensity into two independent ink application processes. This segmentation allows the system to achieve high luminescence intensity by applying clear ink while maintaining saturation through fluorescent ink, eliminating the inverse relationship between these two properties.
Solution Approach 2:
The clear ink containing resin functions as an intermediary that enhances luminescence intensity without compromising saturation. The resin acts as a mediator that amplifies the luminescent effect while the fluorescent ink maintains color saturation, allowing independent optimization of both parameters.
3Device complexity
If a single fluorescent ink is used to control both saturation and luminescence, then the device complexity is reduced, but the control precision is lost
Solution Approach 1:
The invention segments the ink system into two distinct components: fluorescent ink for saturation control and clear ink for luminescence enhancement. This segmentation enables precise independent control of both properties, though it increases the number of ink types required.
Solution Approach 2:
The invention changes the parameters of the ink system by introducing a clear ink with resin as a new variable. This parameter change allows the system to independently adjust saturation and luminescence intensity by varying the amounts of fluorescent ink and clear ink applied, achieving precise control over both properties.
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 independent control of saturation and luminescence intensity, allowing users to intuitively adjust image quality by designating saturation and luminescence levels, resulting in high-quality images with desired brightness and color intensity.
Implementation Method 1
a first ink containing a fluorescent color material
Data Source
AI summary
A printing apparatus prints an image with a printing unit by applying, onto a printing medium, a first ink containing a fluorescent color material and a second ink containing not fluorescent color material but a resin, determines an amount of the second ink applied to a unit area on the printing medium based on an amount of the first ink applied to the unit area and luminescence information representing a luminescence intensity, and controls an application operation of the first ink and the second ink by the printing unit based on the amount of the first ink and the amount of the second ink applied to the unit area.