Textile Ink Jet Ink Set Reducing Ink Usage via Hue Angle Control
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Solution Overview
Problem
Existing ink jet recording methods for textile printing face challenges in forming chromatic color images with low lightness while minimizing ink usage, as they tend to require excessive ink application, leading to image bleeding and poor image quality.
Innovation Solution
An ink jet ink set comprising cyan, magenta, yellow, and black inks, along with additional inks (first, second, and third inks) containing sublimation dyes, which are specifically formulated to reduce ink usage by adjusting hue angles and lightness levels in the CIELAB color space, allowing for reduced ink application on the image forming portion during textile printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If process color inks (CMYK) are used for textile printing, then a wide color gamut can be achieved, but a large amount of ink lands on the image forming portion causing image bleeding
Solution Approach 1:
The ink set is segmented into process color inks (CMYK) and specific color inks (red, orange, green, blue, pink, violet) with defined hue angle ranges. This segmentation allows selective use of specific color inks for certain color regions, reducing overall ink usage while maintaining color gamut coverage.
Solution Approach 2:
The patent defines specific parameter ranges for hue angle (∠H°) and lightness (L*) for each ink type in the CIELAB color space. By controlling these parameters, the patent optimizes ink formulation to reduce ink amount while maintaining desired color properties and preventing image bleeding.
2Quantity of substance
If specific color inks are used to reduce ink amount, then image bleeding is suppressed, but the effect of reducing ink amount is insufficient for chromatic color images with low lightness
Solution Approach 1:
The ink set provides multi-functionality by including both process color inks and specific color inks that can be used depending on the required color properties. The specific color inks with defined hue angle and lightness ranges serve multiple purposes: reducing ink amount for general applications and achieving precise color control for low lightness chromatic images.
Solution Approach 2:
The patent enables dynamic selection of inks based on the required color characteristics. By defining hue angle and lightness ranges for each ink type, the system can adaptively choose the appropriate ink for each color region, optimizing both ink reduction and image quality for different print conditions.
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 ink set effectively reduces ink usage on the image forming portion, enhancing the quality of chromatic color images with low lightness by minimizing bleeding and improving abrasion resistance, transfer uniformity, and set-off properties, while maintaining color accuracy.
Implementation Method 1
all inks constituting the ink jet ink set for textile printing contain a sublimation dye, respectively
Data Source
AI summary
An ink jet ink set for textile printing according to the present disclosure includes a cyan ink, a magenta ink, a yellow ink, a black ink, and one or more selected from a first ink, a second ink, and a third ink.