Alkali-Peelable Ink Layer for Impermeable Substrates

Solution Overview

Problem

Existing image recording methods on impermeable substrates face challenges in achieving both excellent adhesiveness and alkali peelability, as improving one property often deteriorates the other.

Innovation Solution

An image recording method involving the application of an ink for forming an alkali-peelable layer and an ink jet ink containing a pigment and polymerizable monomers, followed by electron beam curing, where the ink for forming an alkali-peelable layer includes a compound with an acid group and uses a high-molecular-weight initiator, and the ink jet ink is applied and cured with electron beams, enhancing both adhesiveness and alkali peelability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the adhesiveness of the image is improved, then the alkali peelability is deteriorated

Engineering Contradiction:

ImproveadhesivenessVSAvoidalkali peelability

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The ink composition is segmented into multiple functional components: a resin component providing adhesiveness, a peeling component providing alkali peelability, and a coupling component that couples the resin and peeling components. This segmentation allows each component to independently fulfill its specific function without interfering with the other, thereby achieving both good adhesiveness and alkali peelability simultaneously.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention uses a composite ink composition comprising multiple components: resin component (5-50 mass%), peeling component (5-50 mass%), and coupling component (5-50 mass%). This composite structure combines the adhesive properties of the resin with the peeling properties of the peeling component, while the coupling component ensures they work together synergistically to achieve both adhesiveness and alkali peelability.

Inventive Principle:

Principle #40Composite materials

2Ease of manufacture

If the alkali peelability of the image is improved, then the adhesiveness is reduced

Engineering Contradiction:

Improvealkali peelabilityVSAvoidadhesiveness

Core Design Contradiction:

Ease of manufactureVSStrength

Solution Approach 1:

The ink composition is segmented into multiple functional components: a resin component providing adhesiveness, a peeling component providing alkali peelability, and a coupling component that couples the resin and peeling components. This segmentation allows each component to independently fulfill its specific function without interfering with the other, thereby achieving both good adhesiveness and alkali peelability simultaneously.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention uses a composite ink composition comprising multiple components: resin component (5-50 mass%), peeling component (5-50 mass%), and coupling component (5-50 mass%). This composite structure combines the adhesive properties of the resin with the peeling properties of the peeling component, while the coupling component ensures they work together synergistically to achieve both adhesiveness and alkali peelability.

Inventive Principle:

Principle #40Composite materials

3Device complexity

If a single-component ink is used, then the formulation is simple, but both adhesiveness and alkali peelability cannot be achieved simultaneously

Engineering Contradiction:

Improveink formulation complexityVSAvoiddual performance reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The ink composition is segmented into multiple functional components: a resin component providing adhesiveness, a peeling component providing alkali peelability, and a coupling component that couples the resin and peeling components. This segmentation allows each component to independently fulfill its specific function without interfering with the other, thereby achieving both good adhesiveness and alkali peelability simultaneously.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention uses a composite ink composition comprising multiple components: resin component (5-50 mass%), peeling component (5-50 mass%), and coupling component (5-50 mass%). This composite structure combines the adhesive properties of the resin with the peeling properties of the peeling component, while the coupling component ensures they work together synergistically to achieve both adhesiveness and alkali peelability.

Inventive Principle:

Principle #40Composite materials

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 adhesiveness between the image and the impermeable substrate while allowing for effective peeling with an aqueous alkali solution, maintaining high adhesiveness and alkali peelability of the recorded image.

Implementation Method 1

irradiating the ink jet ink for electron beam curing applied onto the ink for forming an alkali-peelable layer on the impermeable substrate with electron beams

Methodology Applied

Scientific EffectElectron beam curing: Electron Beam

Implementation Method 2

containing a pigment and polymerizable monomers

Methodology Applied

Scientific EffectPolymerization: Photopolymerisation

Data Source

PatentUS20240287333A1Image recording method and ink set for impermeable substrate

Publication Date: 2024.08.29 FUJIFILM CORP

AI summary

An image recording method including applying an ink for forming an alkali-peelable layer onto an impermeable substrate, applying an ink jet ink for electron beam curing, containing a pigment and polymerizable monomers, onto the ink for forming an alkali-peelable layer applied onto the impermeable substrate, and irradiating the ink jet ink for electron beam curing applied onto the impermeable substrate with electron beams.