Method and apparatus for safe use of a wet on wet textile printer
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Solution Overview
Problem
Wet on wet textile printing poses safety hazards and equipment damage due to chemical reactions between incompatible inks and wetting agents, leading to ink absorption, bleeding, and feathering, which can result in health risks and poor image quality.
Innovation Solution
A device and method that includes an ink regulator to ensure compatibility between the ink and wetting composition by using RFID tags or chemical identifiers to prevent the application of the wetting composition unless compatibility is confirmed, thereby preventing unsafe reactions and maintaining ink immobilization on the fabric surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If wet on wet printing is used to allow ink to enter the fabric and enable free flow of inks, then image intensity and colorant display are improved, but chemical reactions between incompatible inks and wetting agents cause safety hazards and equipment damage
Solution Approach 1:
The system performs preliminary identification of ink compatibility with the wetting agent before the printing process begins. The ink regulator detects ink properties and determines compatibility with the wetting composition in advance, preventing harmful chemical reactions before they can occur during the wet on wet printing process.
Solution Approach 2:
The ink regulator provides feedback control by continuously monitoring ink properties and comparing them against compatibility requirements. Based on this feedback, the system either permits or prevents the wetting composition from being applied, ensuring that only compatible ink-wetting agent combinations proceed to printing.
2Reliability
If wetting composition is applied to prevent ink absorption into fabric, then ink immobilization on surface is improved, but incompatible chemical reactions cause discharge of unreacted reagents and health risks
Solution Approach 1:
The system performs preliminary compatibility detection between the ink and wetting composition before application. The ink regulator identifies ink characteristics and determines whether the planned wetting composition application will result in safe chemical interactions, preventing harmful reagent discharge before it occurs.
Solution Approach 2:
The ink regulator acts as an intermediary control system between the ink supply and wetting composition application. It mediates the interaction by verifying compatibility first, ensuring that only safe combinations proceed to the wetting and printing stages.
3Object-affected harmful factors
If ink compatibility verification is implemented to prevent chemical reactions, then safety is improved, but device complexity increases due to additional regulation components
Solution Approach 1:
The ink regulator utilizes properties inherent to the ink itself (such as RFID tags, chemical identifiers, or other built-in identification mechanisms) to perform compatibility verification. The system serves itself by using information already present in the ink to determine safety, rather than requiring complex external analysis equipment.
Data Source
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AI summary
A wet on wet garment printing device for printing on a textile surface comprises: an ink holder (2); a printing head (4) mounted for printing onto the textile surface using ink from the ink holder (2); a wetting applicator (6) for wetting the locations prior to printing using a wetting composition (8); and an ink regulator (14) configured to identify compatibility of ink in the holding unit (2) with the wetting composition (8) and to operate the wetting applicator (6) only upon successful identification of compatibility.