Ink Jet Ink Composition for Stable Orange Fabric Printing

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Solution Overview

Problem

Ink jet inks for printing on fabric face challenges in maintaining color rendering consistency across different light sources and suffer from poor color developing properties and discharge stability issues due to the use of certain orange dyes.

Innovation Solution

The development of an ink jet ink set comprising specific dyes such as C.I. Acid Orange 33 and C.I. Acid Orange 94, with controlled ratios and pH levels, along with other inks, to enhance color developing properties and discharge stability while minimizing gas generation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If C.I. Acid Orange 94 is used to widen color reproduction range, then color developing property is improved, but gas generation increases causing discharge failure

Engineering Contradiction:
Improvecolor developing propertyVSAvoidgas generation
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical parameters of the ink formulation by introducing C.I. Acid Orange 33 as a new dye component with different molecular characteristics compared to C.I. Acid Orange 94. This parameter change in dye composition reduces gas generation while maintaining color developing properties through the synergistic effect of multiple dyes.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite dye system by combining C.I. Acid Orange 33 and C.I. Acid Orange 94 in specific ratios. This composite approach allows the ink to benefit from the high color developing property of Acid Orange 94 while the presence of Acid Orange 33 suppresses gas generation, resolving the contradiction between color quality and discharge stability.

Inventive Principle:
Principle #40Composite materials

2Reliability

If dye concentration is increased to ensure color developing property on fabric, then color rendering is improved, but color rendering consistency across different light sources deteriorates

Engineering Contradiction:
Improvecolor developing propertyVSAvoidcolor rendering consistency
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent employs a composite dye system combining C.I. Acid Orange 33 and C.I. Acid Orange 94 to achieve broad spectral coverage. This composite approach ensures consistent color rendering across different light sources by creating a balanced color profile that maintains fidelity under varying illumination conditions while preserving high color developing property on fabric.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentEP2818524B1Ink jet ink for printing, ink jet ink set, and printing method
Publication Date: 2018.03.21 SEIKO EPSON CORP
  • EP2818524B1 patent drawing
  • EP2818524B1 patent drawing
  • EP2818524B1 patent drawing

AI summary

Provided is an ink jet ink for printing including: water; a first dye; and a second dye, in which the first dye is C.I. Acid Orange 33, and the second dye is one or two kinds selected from C.I. Acid Orange 56 and C.I. Acid Orange 94.