Recording Method Brightness Color Reproducibility
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Solution Overview
Problem
Existing recording methods face challenges in achieving excellent brightness and color reproducibility, especially when using bright pigments with dye inks, as the presence of bright pigments can affect color development and lead to issues like color reproducibility problems, such as converting yellow to ocher.
Innovation Solution
A recording method involving the application of a treatment agent containing inorganic fine particles, followed by discharging water-based dye ink and then bright pigment ink onto a recording medium, which prevents water from remaining on the surface and enhances surface smoothness, thereby inhibiting unevenness and blurring, and ensuring satisfactory color reproducibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a bright pigment is used to obtain brightness, then the brightness is improved, but the color reproducibility deteriorates
Solution Approach 1:
The invention segments the recording process into three distinct stages: (1) applying a treatment agent containing inorganic fine particles to the recording medium, (2) discharging water-based dye ink, and (3) discharging bright pigment ink. This segmentation allows the treatment agent to prepare the surface for optimal dye ink penetration and bright pigment adhesion, resolving the contradiction by creating separate functional zones in the recording process that enable both brightness and color reproducibility
Solution Approach 2:
The treatment agent containing inorganic fine particles is applied in advance before discharging the dye ink and bright pigment ink. This preliminary action modifies the recording medium surface to enhance ink penetration and prevent water retention, creating optimal conditions for subsequent ink discharge that ensures both excellent brightness and satisfactory color reproducibility
2Device complexity
If water-based dye ink and bright pigment ink are discharged together, then the process is simplified, but unevenness and blurring occur due to water retention on the surface
Solution Approach 1:
The treatment agent containing inorganic fine particles is applied in advance to the recording medium surface. This preliminary action creates a surface that facilitates rapid water penetration and prevents water retention during subsequent ink discharge, thereby eliminating unevenness and blurring while maintaining process simplicity through sequential discharge of dye ink followed by bright pigment ink
Solution Approach 2:
The treatment agent creates localized modification of the recording medium surface properties, enhancing water penetration and ink adhesion in the specific areas where ink is discharged. This local quality enhancement ensures optimal ink absorption and prevents water retention at the ink-application sites, resolving the unevenness and blurring issues
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
The method achieves excellent brightness and color reproducibility, even on low-smoothness media like regular or matte paper, by forming a pretreatment layer with inorganic fine particles and binder resin, allowing for effective ink penetration and preventing surface water retention.
Implementation Method 1
applying, to a recording medium, a treatment agent containing inorganic fine particles
Implementation Method 2
forming a pretreatment layer with inorganic fine particles and binder resin
Implementation Method 3
allowing for effective ink penetration
Implementation Method 4
discharging a water-based dye ink containing a dye and water to a portion of the recording medium to which the treatment agent has been applied
Implementation Method 5
discharging a bright pigment ink containing a bright pigment and water to the portion of the recording medium to which the water-based dye ink has been discharged
Implementation Method 6
prevents water from remaining on the surface
Data Source
AI summary
A recording method includes: applying, to a recording medium, a treatment agent containing inorganic fine particles; discharging a water-based dye ink containing a dye and water to a portion of the recording medium to which the treatment agent has been applied; and discharging a bright pigment ink containing a bright pigment and water to the portion of the recording medium to which the water-based dye ink has been discharged.