HANS Controller Opaque Ink Process Colorant Gamut
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Solution Overview
Problem
Current printing technologies face inefficiencies in using opaque inks as process colorants, particularly in Halftone Area Neugebauer Separation (HANS) processes, where opaque inks like white ink are not fully utilized due to conventional distinctions between process colorants and opaque inks, leading to inefficient ink use and gamut limitations.
Innovation Solution
The proposed solution involves a processing apparatus with a controller that treats opaque inks, such as white ink, as process colorants within the HANS printing process, allowing for their combination with other colorants to expand the color gamut by determining Neugebauer Primaries and optimizing ink usage through look-up tables and models, thereby overcoming the limitations of conventional opaque ink usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If opaque inks are treated as separate from process colorants in conventional printing, then the printing process maintains simplicity and ease of operation, but ink use efficiency decreases and color gamut is limited
Solution Approach 1:
The patent merges opaque inks with process colorants by treating them uniformly within the HANS framework. Both opaque and transparent inks are subjected to halftoning and Neugebauer primary decomposition, allowing opaque inks to be used efficiently as process colorants rather than being applied as solid layers, thereby improving ink use efficiency while maintaining process simplicity
Solution Approach 2:
The patent changes the operational parameters for opaque inks by applying halftoning techniques and controlling area coverages of Neugebauer primaries. This transforms opaque ink application from solid coverage to variable area coverage, enabling efficient ink usage through partial transparency effects and reducing overall ink consumption
2Ease of manufacture
If opaque inks are treated as separate from process colorants in conventional printing, then the printing process remains simple, but color gamut is limited
Solution Approach 1:
By merging opaque inks into the process colorant category and applying HANS treatment, the system enables opaque inks to contribute to color gamut expansion. The uniform treatment allows opaque inks to be combined with transparent colorants in controlled ways, creating a broader color gamut while maintaining operational simplicity
Solution Approach 2:
The patent makes opaque inks multi-functional by treating them as process colorants that can serve both opaque and transparent functions depending on halftoning and area coverage. This universality allows a single ink type to expand color gamut while maintaining ease of operation through unified processing
3Reliability
If opaque inks are applied as solid layers in conventional printing, then color coverage is achieved, but ink consumption increases and print quality decreases
Solution Approach 1:
The patent segments opaque ink application into discrete Neugebauer primary areas with controlled area coverages. Instead of applying opaque ink as solid layers, the system decomposes it into halftoned patterns of varying densities, maintaining color coverage while significantly reducing overall ink consumption through selective application
Solution Approach 2:
The patent changes the application parameters of opaque inks from solid coverage to variable area coverage through halftoning. This parameter change maintains perceived color coverage by exploiting human visual integration while reducing actual ink consumption through controlled transparency and partial coverage
4Ease of operation
If conventional distinctions between process colorants and opaque inks are maintained, then the printing process is easier to operate, but manufacturing precision decreases
Solution Approach 1:
By merging opaque inks with process colorants under unified HANS processing, the patent achieves consistent and precise color reproduction. The uniform treatment through halftoning and Neugebauer primary decomposition eliminates variability between opaque and transparent ink handling, improving manufacturing precision while maintaining ease of operation through standardized procedures
Data Source
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AI summary
A processing apparatus is provided. The processing apparatus includes a controller to process information as part of a Halftone Area Neugebauer Separation printing process to use at least one opaque ink as a process colorant in combination with at least one further process colorant.