Direct to Mesh Screen Stencil Creation via Inkjet Emulsion
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Solution Overview
Problem
The current screen printing process for creating stencils is labor-intensive, prone to errors, and requires numerous chemicals and water, with limited automation and high costs due to the need for manual handling and extensive processing steps.
Innovation Solution
The Direct to Mesh (DtM) process uses inkjet technology to directly apply and activate a jettable emulsion onto a screen, employing a frame, platen, and inkjet printer carriage with a release fluid to create a stencil, eliminating the need for post-processing and reducing chemical and water usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional screen printing stencil creation process is used, then the stencil can be created with conventional materials and methods, but the process is labor-intensive, requires numerous chemicals and water, and involves extensive manual handling
Solution Approach 1:
The patent replaces manual mechanical application methods with an inkjet printing system that digitally deposits emulsion directly onto the screen mesh. The inkjet print head precisely controls emulsion placement through computer-driven nozzle operation, eliminating the need for manual squeegee application and exposure processes.
Solution Approach 2:
The invention changes the physical state and delivery method of the emulsion from a traditional paste applied manually to a jettable fluid deposited drop-by-drop by an inkjet system. The emulsion is formulated with specific viscosity and flow characteristics that enable direct digital printing while maintaining proper mesh coverage and stencil formation properties.
2Ease of manufacture
If traditional screen printing stencil creation process is used, then the stencil can be created with conventional materials, but it requires numerous chemicals and water for processing
Solution Approach 1:
The patent extracts and eliminates the need for traditional chemical processing steps including emulsion mixing, screen coating, drying, exposure, and washing. The process is reduced to direct digital emulsion deposition followed by UV curing, removing all intermediate chemical baths and water-intensive steps from the workflow.
Solution Approach 2:
The inkjet system deposits emulsion precisely only where needed on the screen mesh, and the UV curing step immediately activates the emulsion in place. This self-contained process eliminates the need for separate chemical processing stations, water rinsing systems, and chemical disposal infrastructure that traditional methods require.
3Productivity
If traditional screen printing stencil creation process is used, then the stencil can be created with conventional methods, but it involves extensive processing steps and post-processing
Solution Approach 1:
The patent combines multiple traditional process steps into a single integrated digital printing operation. The inkjet system deposits emulsion and the UV system cures it in immediate succession, merging the coating and curing steps that were previously separate manual operations into one automated workflow without intermediate handling.
Solution Approach 2:
The emulsion is pre-formulated with UV-reactive properties that enable immediate curing upon deposition. This preliminary chemical preparation allows the emulsion to be activated in place right after printing, eliminating the need for subsequent drying ovens, exposure units, or post-processing treatments that traditional processes require.
4Ease of operation
If traditional screen printing stencil creation process is used, then the stencil can be created with conventional materials, but it requires manual handling and extensive processing
Solution Approach 1:
The patent replaces all manual mechanical operations with an automated inkjet printing system controlled by computer software. The system automatically positions the print head, deposits emulsion through precisely controlled nozzle firing sequences, and coordinates UV curing, eliminating manual handling time and human-operated process steps.
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 simplifies stencil creation, reduces labor and capital equipment costs, and enhances precision and efficiency by eliminating additional processing steps and allowing for accurate registration without micro-adjustments, while using conventional mesh and standard lighting conditions.
Implementation Method 1
a print head to print the jettable emulsion on a side of the pre-stretched mesh
Implementation Method 2
a platen to hold a release fluid against one side of the pre-stretched mesh
Implementation Method 3
The jettable emulsion is UV-activated
Data Source
AI summary
A direct to mesh (DtM) screen printer for creating a screen stencil is provided. The DtM screen printer includes a frame to hold a pre-stretched mesh in place during application of a jettable emulsion, a fixture to hold the frame, a platen to hold a release fluid against one side of the pre-stretched mesh, a fluid dispenser for dispensing the release fluid onto the platen or mesh, and a printer carriage supporting a print head for printing the jettable emulsion on a side of the pre-stretched mesh opposite the platen. A process is also provided, the process being for using the DtM screen printer to prepare the screen stencil for screen printing.