Metal Printed Constructions Using Replenished Particle Monolayers
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Solution Overview
Problem
Existing printing methods for metallized surfaces are costly due to high foil wastage in foil imaging and do not achieve the quality of traditional foil printing, while metal ink methods suffer from print quality issues.
Innovation Solution
A printing method involving a donor surface coated with individual particles, where the substrate surface is treated to enhance affinity for the particles, allowing a monolayer transfer to selected regions, and the donor surface is replenished with fresh particles for continuous printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If foil imaging is used to print metallized surfaces, then high-quality metallized prints with good gloss and reflectivity are achieved, but large amounts of foil are wasted during each stamp/fuse process
Solution Approach 1:
The foil is segmented into individual transferable elements that can be selectively applied. The patent uses a granular or flaky material structure where small particles or flakes are distributed on a carrier, allowing only the necessary portions to be transferred to the substrate while leaving the rest on the carrier for reuse.
Solution Approach 2:
The patent enables recovery of the untransferred material. After printing, the carrier with remaining granular material is reused for subsequent printing cycles, significantly reducing waste compared to traditional foil stamping where the entire foil sheet is discarded after one use.
2Loss of substance
If metal inks are used to reduce foil wastage, then material waste is reduced, but print quality and gloss are compromised
Solution Approach 1:
The patent uses inexpensive granular or flaky material that can be easily replenished on the carrier surface. Rather than using expensive metal foils or complex metal ink formulations, simple metallic particles or flakes are used, which can be readily applied and discarded or reused without compromising quality.
Solution Approach 2:
The patent employs composite structures where metallic particles or flakes are combined with a carrier material. This composite approach allows the metallic elements to provide the desired visual effect and reflectivity while the carrier enables controlled transfer and reuse, achieving both quality and waste reduction.
3Manufacturing precision
If traditional foil stamping is used to achieve high gloss images, then excellent gloss and reflectivity are obtained, but the process is high cost due to foil expense and single-use nature
Solution Approach 1:
The carrier material is designed to automatically retain and present the granular or flaky material for transfer. The carrier self-replenishes or can be easily refreshed, eliminating the need for expensive custom foils for each printing job and reducing overall manufacturing costs while maintaining consistent quality.
Solution Approach 2:
The patent enables periodic reuse of the carrier with granular material across multiple printing cycles. Instead of single-use foils, the same carrier can be used repeatedly, with the material being refreshed periodically, significantly reducing material costs and improving manufacturing efficiency.
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 method reduces waste and costs by repairing the particle layer after each impression, achieving high-quality metallized prints with improved gloss and reflectivity comparable to traditional foil printing.
Implementation Method 1
treating the substrate surface to increase the affinity of the particles to the substrate surface compared to the affinity of the particles to the donor surface
Implementation Method 2
pressing the substrate surface against the donor surface to transfer a monolayer of particles from the donor surface to the substrate surface
Data Source
Figure 1
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Figure 3A~3D
AI summary
There is disclosed a print construction comprising: (a)a printing substrate having an image-receiving surface; (b) a receptive layer, at least partially covering said image-receiving surface, and having a particle reception surface distally disposed to said image-receiving surface, said receptive layer optionally having a thickness of at least 1000 nanometer (nm); and (c) a plurality of individual particles adhered to said particle reception surface, and forming a monolayer thereon, the features of which are described herein.