Intermediate Substrate Powder Transfer for Uniform Dry Printing
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Solution Overview
Problem
Current powder deposition systems face challenges in achieving precise control, uniformity, and high-speed deposition of patterned dry powder, often requiring multiple smoothing and conditioning processes, and are limited by hopper configurations and recoater mechanisms that result in non-uniform layers and slow manufacturing processes.
Innovation Solution
A dry powder offset printing system using an intermediate substrate to receive patterned dry powder, which is then transferred to a target substrate with heat and pressure to form a fused patterned layer, utilizing a patterning system and directed energy to facilitate precise control and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hopper or feeder is used to dispense dry powder onto substrate, then material deposition is achieved, but powder deposition uniformity deteriorates resulting in non-uniform powder pile
Solution Approach 1:
The patent introduces an intermediary transfer substrate that receives powder from the hopper/feeder and then transfers it to the target substrate. This intermediate step allows the powder to be deposited uniformly on the transfer substrate first, and then precisely transferred to the final substrate, resolving the uniformity issue while maintaining productivity
Solution Approach 2:
The patent replaces the direct mechanical dispensing system (hopper/feeder to substrate) with a multi-stage system involving transfer substrate, controlled agitation, and precise positioning mechanisms. This substitution enables better control over powder distribution uniformity while maintaining deposition capability
2Manufacturing precision
If multiple smoothing and conditioning processes are applied to powder pile, then powder surface uniformity is improved, but manufacturing process complexity increases
Solution Approach 1:
The patent combines multiple smoothing and conditioning functions into a single integrated transfer substrate system. The transfer substrate performs agitation, smoothing, and conditioning in one unified process step, eliminating the need for separate rollers and conditioning devices while achieving the same uniformity results
Solution Approach 2:
The patent extracts the smoothing and conditioning functions from the main deposition system and integrates them into the transfer substrate. This separation allows the transfer substrate to specialize in uniformity preparation without requiring additional complex equipment in the main deposition line
3Speed
If hopper/feeder configuration is adjusted to improve powder mass flow rate consistency, then deposition speed can be improved, but powder still requires further smoothing and conditioning
Solution Approach 1:
The transfer substrate acts as an intermediary that receives powder at high speed from the hopper/feeder and then performs controlled agitation and smoothing before transfer. This allows high-speed deposition to be maintained while the intermediate step ensures uniformity is achieved without requiring multiple additional processing steps
4Speed
If material dispenser lacks precise control of powder deposition at high speeds, then high-speed deposition is achieved, but powder deposition uniformity deteriorates
Solution Approach 1:
The transfer substrate serves as an intermediary that decouples the high-speed deposition function from the precision uniformity function. The hopper/feeder can operate at high speed to deposit powder onto the transfer substrate, and then the transfer substrate performs controlled agitation and uniform distribution before transferring to the final substrate, achieving both high speed and uniformity
5Quantity of substance
If recoater, roller, blade or horizontal bar is used to deposit powder particles, then powder layer is formed, but feature sizes are limited and printing resolution is reduced due to larger particle sizes and thick layers
Solution Approach 1:
The patent replaces traditional mechanical powder deposition tools (recoater, roller, blade) with a controlled powder transfer system using an intermediate substrate. This system allows for more precise control of powder placement and layer thickness, enabling finer feature sizes and higher printing resolution while still forming complete powder layers
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
Enables high-speed, high-precision deposition of patterned layers with improved uniformity and reduced need for additional processing, enhancing feature sizes and printing resolution while simplifying the design and eliminating the need for multiple smoothing rollers.
Implementation Method 1
a pressing mechanism configured to apply heat and pressure to the patterned dry powder positioned vertically above an upper surface of the target substrate
Implementation Method 2
a pressing mechanism configured to apply heat and pressure to the patterned dry powder positioned vertically above an upper surface of the target substrate
Implementation Method 3
an intermediate substrate having an exterior surface configured to move patterned dry powder towards a target substrate
Data Source
AI summary
Systems, methods, and other embodiments associated with high speed, high precision direct deposition of patterned dry powder. In one embodiment, an example apparatus includes an intermediate substrate having an exterior surface configured to move patterned dry powder towards a target substrate, the exterior surface further configured to move and enclose a volume, a patterning device communicably coupled to the intermediate substrate and configured to form patterned dry powder on the exterior surface of the intermediate substrate, and a pressing mechanism configured to apply heat and pressure to the patterned dry powder positioned vertically above an upper surface of the target substrate to disrupt the adhesion of the patterned dry powder positioned vertically above the upper surface of the target substrate and transfer and adhere the patterned dry powder to the upper surface of the target substrate as a fused patterned layer.