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Solution Overview

Problem

Existing printers struggle to achieve excellent printing quality on mixed textiles, as traditional inks may not adequately satisfy the dyeing requirements of multiple textile materials, leading to poor color expression and adhesion issues.

Innovation Solution

A printer equipped with an inkjet type printhead and an adhesive head unit that sprays a multicomponent adhesive, allowing for digital printing on textiles, including mixed textiles, by forming a design on a transfer film and then transferring it to the textile using the adhesive.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional inks are used for printing on mixed textiles, then the printing process is simple, but the dyeing quality and adhesion are poor

Engineering Contradiction:
Improvedyeing qualityVSAvoidprinting system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The printing system is segmented into multiple independent printheads, each dedicated to a specific ink type (reactive ink for cotton, acid ink for silk, sublimation ink for polyester). This segmentation allows each printhead to be optimized for its specific ink type while maintaining overall system simplicity through modular architecture.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The printing system achieves universality by incorporating multiple printheads that can handle different ink types within a single device. This multi-functional design enables the printer to adapt to various textile materials (cotton, silk, polyester, and their mixtures) without requiring separate printing systems for each material type.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Manufacturing precision

If a single ink type is used for mixed textiles, then the device complexity is low, but the color expression and adhesion are insufficient

Engineering Contradiction:
Improvecolor expressionVSAvoidink system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The ink system is segmented into multiple independent ink delivery channels, each supplying a specific ink type to its corresponding printhead. This segmentation enables precise control over ink application for each textile fiber type present in the mixed fabric, ensuring optimal color expression and adhesion.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system applies local quality by directing specific ink types to specific areas or layers of the textile based on the local fiber composition. Each printhead deposits its ink type selectively, ensuring that cotton areas receive reactive ink, polyester areas receive sublimation ink, and so on, thereby optimizing color expression for each local region.

Inventive Principle:
Principle #3Local quality

3Productivity

If digital printing method is used, then productivity and flexibility are improved, but the ability to handle mixed textiles is limited

Engineering Contradiction:
Improveprinting speedVSAvoidtextile material compatibility
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The digital printing system achieves universality by integrating multiple printheads capable of handling different ink types within a single digital printing platform. This multi-functional design maintains the high productivity and flexibility of digital printing while expanding adaptability to handle various textile materials including cotton, silk, polyester, and their mixtures.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system employs dynamic control where the digital printing controller selectively activates specific printheads based on the detected textile material composition. This dynamic adaptation allows the printer to maintain high-speed digital printing operations while automatically adjusting which ink types are applied to match the specific textile material being printed.

Inventive Principle:
Principle #15Dynamics

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

This solution enables high-quality digital printing on mixed textiles, ensuring excellent color expression and adhesion, while also increasing printing speed and convenience.

Implementation Method 1

a printer equipped with an inkjet type printhead and an adhesive head unit that sprays a multicomponent adhesive, allowing for digital printing on textiles

Methodology Applied
Scientific EffectInkjet printing:

Implementation Method 2

an adhesive head unit that sprays a multicomponent adhesive, allowing for digital printing on textiles, including mixed textiles, by forming a design on a transfer film and then transferring it to the textile using the adhesive

Methodology Applied
Scientific EffectAdhesive bonding: Adhesive

Data Source

PatentEP3932679B1printer
Publication Date: 2025.02.12 KOSTECH INC
  • EP3932679B1 patent drawingFigure 1~2
  • EP3932679B1 patent drawingFigure 3~4
  • EP3932679B1 patent drawingFigure 5~7

AI summary

A printer according to the present invention includes an ink head unit for spraying ink through a head, and an adhesive head unit for spraying an adhesive material through the head. Specifically, by including the adhesive head unit configured to spray a plurality of adhesive materials through a plurality of heads, respectively, the present invention enables use of an inkjet type print head in forming patterns on a fiber fabric, paper, a transfer film, or the like, and thus enables various designs and printing on a fiber fabric including a blended fiber fabric; paper; a transfer film; or the like through processing digital type image and data and can ensure excellent print quality, and can enhance the printing speed while achieving easy and convenient printing.