Digital Embossing Polymer Overlay Resolution
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Solution Overview
Problem
Digital printing techniques, such as those using ink-jet technology, struggle to maintain the illusion of raised printing when printing fine details and small point text, as the thick polymer overlay splurges and degrades the resolution of the underlying print, often magnifying the text and losing the textured aspect.
Innovation Solution
A method and system for high-resolution digital embossing that involves analyzing digital images to identify text characters and thin lines, determining the appropriate percentage of polymer pixel reduction using a lookup table, and creating a raster image with stochastic pixel removal to print a polymer overlayer, ensuring the polymer conforms closely to the underlying ink layer, maintaining the illusion of embossing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a thick polymer layer is printed over fine detail pigmented ink, then the textured aspect and embossing effect are achieved, but the resolution is degraded and the illusion of raised printing is lost
Solution Approach 1:
The patent applies different polymer layer thicknesses to different regions of the print based on local requirements. Fine detail text areas receive reduced polymer coverage while larger text areas maintain full embossing effect, achieving both resolution preservation and textured appearance where needed
Solution Approach 2:
The system dynamically adjusts the polymer layer thickness parameter based on the underlying content characteristics. By analyzing the printed image and modifying the polymer deposition parameters accordingly, the system optimizes the balance between embossing effect and resolution preservation
2Shape
If a thick polymer layer is used to create embossing effect, then the textured aspect is achieved, but the polymer acts as a magnifier and degrades the resolution of the underlying print
Solution Approach 1:
The patent reduces polymer layer thickness specifically in regions containing fine detail text and small point size characters, while maintaining full thickness for larger text and graphical elements. This local differentiation preserves the textured appearance for embossing while preventing resolution degradation in critical fine detail areas
3Shape
If a relatively thick layer of polymer is printed to achieve embossing, then the textured aspect is achieved, but the illusion is lost when printing small point size text due to splurging
Solution Approach 1:
The system identifies regions with fine detail text and small point size characters and applies reduced polymer coverage specifically to those areas. This prevents the polymer from splurging and maintaining crisp, well-defined edges while still providing embossing effect in regions where it is appropriate
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 approach effectively maintains the crispness and resolution of fine details and small point text, restoring the illusion of embossed printing by reducing the polymer layer's thickness and spread, ensuring the polymer overlayer follows the underlying ink layer closely, thus achieving high-resolution digital embossing.
Implementation Method 1
Scodix provides relatively thick printing of photo-polymeric inks which provide a texture to a medium
Data Source
AI summary
A method of high resolution digital embossing by printing a polymer overlayer over a printed file, comprising: receiving a digital image of a printed file, identifying text characters in the digital image, for each identified text characters determining the font type and size, using a lookup table to determine a percentage of polymer pixels reduction for the identified font type and size, creating a raster image for a polymer overlayer to be printed over the printed areas of the printed file and printing a polymer overlayer according to the raster image over the printed file, wherein creating a raster image comprises stochastically removing the determined percentage of pixels from the overlay area concurrent with each identified character.