Print Color Mapping via Convex Ink Combinations
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Solution Overview
Problem
Current image rendering devices face challenges in optimizing color properties such as lightfastness, gamut volume, and ink efficiency, as these properties often trade off against each other, and existing technologies lack efficient methods to tailor ink usage based on specific print job requirements.
Innovation Solution
A print processing system that uses a controller to generate a print mapping based on desired color properties, selecting appropriate ink ratios and combinations, including the use of fluorescent and non-fluorescent inks, to optimize lightfastness while maximizing gamut volume and minimizing graininess, by characterizing color mapping data through measurements and look-up tables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If fluorescent inks are used to maximize gamut volume, then color rendering capability is improved, but lightfastness deteriorates
Solution Approach 1:
The system dynamically adjusts the proportion of fluorescent to non-fluorescent inks based on desired color properties. By changing the ink composition parameters, the system can optimize between gamut volume and lightfastness for different print jobs, selecting higher fluorescent ink content for maximum gamut or lower fluorescent ink content for improved lightfastness.
Solution Approach 2:
The color mapping data is configured dynamically based on print job requirements. The system can switch between different ink combinations (fluorescent-heavy for gamut, non-fluorescent-heavy for lightfastness) depending on the specific print task, making the system adaptable rather than fixed.
2Reliability
If non-fluorescent inks are used to improve lightfastness, then durability is improved, but gamut volume deteriorates
Solution Approach 1:
The system adjusts ink composition parameters to favor non-fluorescent inks when lightfastness is the priority. By changing the proportion of fluorescent to non-fluorescent ink in the color mapping, the system can sacrifice some gamut volume to achieve superior lightfastness for applications requiring durability.
3Adaptability or versatility
If multiple ink combinations are maintained for different color properties, then adaptability is improved, but device complexity deteriorates
Solution Approach 1:
The system uses a single color mapping configuration that can produce multiple color properties by adjusting ink proportions. Rather than requiring separate physical printing systems for different color goals, one universal color mapping can adapt to produce fluorescent-optimized or non-fluorescent-optimized outputs based on print job requirements.
Solution Approach 2:
The system manages complexity by controlling ink ratio parameters within a unified color mapping framework. By adjusting the proportion of fluorescent to non-fluorescent inks through parameter changes rather than physical system changes, the system achieves versatility without proportionally increasing device complexity.
Data Source
AI summary
Certain examples relate to configuring a print processing system to produce rendered color outputs based on desired properties of said outputs using resources available to the print processing system. In these examples, print job data is received comprising image data and print property data. Color mapping data is configured to produce print mapping data based on at least the print property data. Print instructions for an image rendering device are generated based on the print mapping data. The print properties may be selectable by a user. Color mapping data may be characterized by color properties.