Ink Composition For Ink Jet Printing
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Solution Overview
Problem
Ink compositions containing C.I. Acid Orange 33 for ink jet printing face challenges in achieving both water resistance and clogging reliability, with nozzles often clogging due to the use of this coloring agent.
Innovation Solution
An ink composition is developed containing a compound A represented by Formula (1) and a compound B represented by Formula (2), with a mass ratio of compound A to compound B between 1.0 and 99, along with a water-soluble organic solvent and water, to enhance water resistance and clogging reliability, and optionally including a compound C to reduce metamerism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single coloring agent is used to simplify the ink composition, then manufacturing complexity is reduced, but achieving both water resistance and clogging reliability becomes difficult
Solution Approach 1:
Instead of using a single complex coloring agent that cannot simultaneously provide water resistance and clogging prevention, the patent segments the coloring function into multiple simpler agents with distinct properties. This segmentation makes it easier to manufacture while achieving dual reliability performance, as each component has a specialized function.
Solution Approach 2:
The patent creates a composite coloring system by combining high-polarity and low-polarity coloring agents in specific ratios. This composite approach simplifies manufacturing compared to developing a single complex molecule, while achieving both water resistance and clogging reliability through the synergistic effects of the composite materials.
Data Source
AI summary
Provided is an ink composition for ink jet printing containing a coloring material, a water-soluble organic solvent, and water. The coloring material contains a compound A represented by Formula (1) and a compound B represented by Formula (2) and a mass ratio (a/b) of a content a of the compound A to a content b of the compound B is 1.0 or more and 99 or less.