Metallic Label Assembly for Anti-Static Laser Printing
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Solution Overview
Problem
Conventional paper and metallic labels used in laser printers suffer from static charge buildup, leading to safety hazards and print quality issues such as curling, jamming, and poor adhesion, due to their inability to dissipate static electricity and withstand high temperatures.
Innovation Solution
A printable label assembly with a metallic interlayer containing non-leafing silver ink pigments that form channels to localize and dissipate static charges, combined with a primer layer for adhesion and a colored coating for visibility, providing anti-static and high-heat resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional paper or metallic labels are used in laser printers, then printing can be performed, but static charge builds up causing safety hazards and print quality issues
Solution Approach 1:
The patent changes the electrical conductivity parameter of the label material by incorporating conductive polymers or metallic coatings with controlled resistance values, enabling the material to dissipate static charges while maintaining printability and durability in laser printing applications
Solution Approach 2:
The patent uses composite materials combining conventional label substrates with conductive additives such as carbon black, metallic oxides, or conductive polymers to create a multi-functional material that provides both label functionality and static dissipation properties
2Illumination intensity
If conventional metallic labels are used, then metallic appearance is achieved, but the labels cannot dissipate static electricity and cause static shock
Solution Approach 1:
The patent applies local quality by creating zones of different electrical conductivity within the metallic coating - areas with higher conductivity for charge dissipation and areas with appropriate reflectivity for metallic appearance, achieving both aesthetic and functional requirements simultaneously
Solution Approach 2:
The patent modifies the electrical and optical parameters of metallic coatings by controlling particle size, distribution, and composition of metallic or metallic-oxide pigments to achieve the desired balance between static dissipation and visual appearance
3Productivity
If conventional substrates are used in laser printing, then printing process can proceed, but high heat causes curling, sticking, and jamming
Solution Approach 1:
The patent changes the thermal properties of label substrates by selecting materials with higher glass transition temperatures and optimized coefficient of thermal expansion to match the label backing, enabling the labels to withstand laser printing temperatures without curling or dimensional distortion
Solution Approach 2:
The patent addresses thermal expansion by matching the coefficient of thermal expansion between the label face material and backing material, or by incorporating expansion compensation layers that prevent curling and sticking during the high-temperature laser printing process
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 label assembly prevents static shock and maintains print quality by quickly dissipating static electricity, ensuring flat stacking and preventing curling, jamming, and enhancing adhesion, while maintaining high-temperature resistance.
Implementation Method 1
the metallic interlayer comprises non-leafing ink pigments... quickly dissipating static electricity
Data Source
AI summary
Provided is an anti-static and high-heat resistant label sheet comprising a film, metallic interlayer, and adhesive. The metallic interlayer comprises pigments that are smoother, have a rounded edge, and result in a more homogenous thickness with minimal to no surface defects, which allow for increased reflectivity and vibrancy of the pigments and label sheet. The pigments are also aligned as to form channels within the metallic interlayer for dispersing and preventing buildup of static electricity. The label sheet may further comprise a printable top coat, primer coating, a colored coating, and a liner layer. The printed label sheets may be used for asset tracking and security labeling, such as barcoding products and inventory. The metallic color and reflectivity of the label sheets, and the die-cut labels thereon, may enable readability of the barcodes with a handheld scanner up to 24 inches distance.