Print Data Generation for Flat Color and Gloss Layers
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Solution Overview
Problem
Existing techniques for reproducing colors and gloss in printed matter face challenges due to the influence of surface-scattered light, leading to color changes and increased complexity in color correction, particularly when a glossy layer is applied on top of a color development layer.
Innovation Solution
The solution involves forming a color development layer to be flat and smooth, allowing for color correction that only considers the form of the glossy layer, using a print system with a color correction unit that generates print data to correct color data based on gloss data, and separates the color development and glossy layers to minimize the impact of surface-scattered light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a glossy layer is formed on the color development layer to reproduce gloss, then the gloss reproduction is improved, but the observed color changes due to surface-scattered light
Solution Approach 1:
The patent segments the printing process into distinct layers: a color development layer for color reproduction and a glossy layer for gloss reproduction. By separating these functions into different layers, the patent allows independent optimization of each layer's properties, enabling gloss reproduction without compromising color accuracy through proper layer design and spacing.
Solution Approach 2:
The patent introduces an intermediary approach by using a flat and smooth color development layer as a base that mediates between the substrate and the glossy layer. This intermediary layer ensures uniform light reflection and prevents the glossy layer from causing color shifts, thereby maintaining color accuracy while achieving gloss reproduction.
2Manufacturing precision
If color correction is performed considering both surface roughness and density, then color accuracy is improved, but the number of correction values increases and complexity increases
Solution Approach 1:
The patent extracts the surface roughness factor from the color correction calculation by ensuring the color development layer is flat and smooth. This extraction eliminates the need to consider surface roughness in color correction, reducing the number of correction values required while maintaining color accuracy through proper layer formation rather than complex correction algorithms.
Solution Approach 2:
The patent performs preliminary action by forming the color development layer to be flat and smooth before applying the glossy layer. This preliminary preparation of the color development layer's surface morphology prevents the need for complex color correction calculations, as the uniform surface ensures predictable and consistent optical properties throughout the printed material.
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 simplifies color correction by reducing the number of correction values needed and effectively stabilizes the observed color, reducing the complexity of color correction processes while maintaining accurate reproduction of colors and gloss.
Implementation Method 1
the light to be reflected from the surface is reflected irregularly, and therefore, there is a possibility that the color that is observed in the area A is different from the color that is observed in the area B. The light that is reflected irregularly from the surface of an object as described above is called surface-scattered light.
Implementation Method 2
a glossy layer 103 is formed on the color development layer 102... in the area A where the glossy layer is formed on the color development layer, the light to be reflected from the surface is reflected irregularly
Data Source
AI summary
In printing, it is possible to more easily reduce a change in color that is caused by the surface form of an image to be formed. A color correction unit configured to correct color data representing a color by using a correction value in accordance with gloss data representing gloss, a color conversion unit configured to convert the corrected color data into color material amount data, a first generation unit configured to generate, based on the color material amount data, data that is used to form a color development layer among the print data and which makes the color development layer flat and smooth, and a second generation unit configured to generate, based on the gloss data, data that is used to form a glossy layer among the print data are included.