Laser Printing Process Ink Bulge Adhesion Transfer
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Solution Overview
Problem
Existing laser-based printing processes require high energy to transfer ink from a carrier to a substrate, resulting in undefined ink spots with numerous satellites and high costs due to the need for powerful lasers, limiting high-speed printing applications.
Innovation Solution
A process where the ink layer on a carrier is regionally heated by a laser to form bulges, which contact a substrate due to relative movement, allowing ink splitting and transfer through adhesion forces rather than solely laser-induced vaporization, reducing energy input and satellite formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high energy laser is used to vaporize ink and throw drops onto substrate, then ink transfer is achieved, but energy consumption increases and satellite formation occurs
Solution Approach 1:
The patent changes the fundamental parameter of ink transfer mechanism from laser-induced vaporization and ballistic projection to laser-heating-induced capillary action and adhesive transfer. By adjusting the laser power to a lower range and changing the physical state transformation mechanism, the system achieves precise ink transfer without requiring high energy input, thereby resolving the contradiction between transfer precision and energy consumption.
Solution Approach 2:
The patent replaces the mechanical ballistic projection system (where laser vaporizes ink and pressure throws drops) with a thermal-adhesive system (where laser heats ink to form bulges that transfer via adhesion). This substitution eliminates the need for high-energy vaporization and complex pressure-driven projection, reducing energy consumption while maintaining transfer precision.
2Productivity
If high power laser is used to part ink from carrier, then ink transfer speed increases, but costs increase and satellite formation increases
Solution Approach 1:
The patent applies partial action by using lower laser power than traditional vaporization methods and achieving transfer through partial heating that forms bulges rather than complete vaporization. This partial thermal action is sufficient for ink transfer when combined with the adhesive mechanism, reducing energy input and eliminating excessive heating that causes satellites while maintaining printing speed.
Solution Approach 2:
The patent converts the potentially harmful effect of laser heating into a beneficial adhesive transfer mechanism. Instead of using high power to vaporize and project (which creates satellites), the system uses controlled heating to form bulges that transfer via adhesion, turning thermal energy into a beneficial transfer force rather than a harmful vaporization force.
3Manufacturing precision
If laser vaporizes ink to create drop projection, then ink transfer is achieved, but undefined spots and satellites are produced
Solution Approach 1:
The patent applies local quality by concentrating laser energy precisely at the desired transfer location to form localized bulges in the ink layer. This localized heating creates discrete, controlled transfer zones rather than diffuse vaporization, ensuring that ink transfers only where intended and producing clean, defined spots without satellites or undefined patterns.
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 significantly reduces laser power requirements, minimizes satellite formation, and achieves high-resolution prints of 300 dpi or more with improved image quality and increased printing speed.
Implementation Method 1
The ink layer is regionally heated by a laser to form bulges
Implementation Method 2
regionally heated by a laser to form bulges
Implementation Method 3
the ink, particularly by virtue of vaporizing constituents, is heated and forms a bulge
Implementation Method 4
ink splitting is brought about by relative movement between substrate and ink carrier... attachment preferably takes place predominantly, more preferably exclusively, by forces of adhesion between the substrate and the drop of ink that forms
Data Source
AI summary
Printing process in which a substrate to be printed is disposed opposite an ink carrier having an ink layer, wherein the ink layer is regionally heated in such a way that bulges are formed in the ink layer, wherein the bulges contact the substrate and wherein ink splitting is brought about by relative movement between substrate and ink carrier.