Screen Printing Plate Opening End Projection Recess Pattern
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Screen printing faces challenges in achieving high transfer performance for fine designs due to bleeding of printing material from the opening end portion, particularly in the electronics industry, where the surface shape of the substrate and viscosity of the material complicate the printing process, leading to irregular patterns and increased manufacturing costs.
Innovation Solution
A screen printing plate with an opening portion that has a reduced size and an opening end portion featuring a projection and recess pattern shape different from the target printing pattern, which controls bleeding by increasing the bleeding width in recess areas and decreasing it in projection areas, resulting in a smooth and regular printing pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a straight opening end portion is used to make the printing material end straight, then the opening end is simplified, but bleeding occurs and the printing pattern becomes irregular
Solution Approach 1:
The opening end portion is given different local shapes (protrusions and recesses) at different positions rather than a uniform straight shape. This local variation in geometry allows different bleeding behaviors at different locations, collectively producing a straight printing pattern edge despite the complex opening shape.
2Manufacturing precision
If printing pressure is increased to improve transfer performance, then printing quality improves, but bleeding of printing material increases
Solution Approach 1:
The shape parameter of the opening end portion is changed from a simple straight shape to a complex shape with protrusions and recesses. This geometric parameter change modifies the bleeding behavior of the printing material, allowing high transfer performance to be achieved while controlling bleeding through the varied local geometries.
3Manufacturing precision
If a printing-material reservoir or bank is provided to prevent bleeding, then bleeding is reduced, but manufacturing complexity and cost increase
Solution Approach 1:
The anti-bleeding function is merged into the opening portion itself rather than being a separate component. The protrusion and recess structures are integrated directly into the opening geometry, eliminating the need for separate reservoirs or banks while achieving the same bleeding control effect.
4Manufacturing precision
If the opening portion size is reduced to match the target printing pattern, then pattern accuracy improves, but bleeding control becomes more difficult
Solution Approach 1:
The opening end portion is given different local shapes (protrusions and recesses) at different positions rather than a uniform straight shape. This local variation in geometry allows different bleeding behaviors at different locations, collectively producing a straight printing pattern edge despite the complex opening shape.
Data Source
AI summary
A screen printing plate having at least an opening portion that discharges a printing material for forming a target printing pattern on a matter to be printed is provided in screen printing, and the screen printing plate is characterized in that the size of the opening portion is reduced from the target printing pattern and an opening end portion of the opening portion has a projection and recess pattern shaped differently from the target printing pattern shape. By this arrangement, bleeding of the printing material of the screen printing can be controlled and a high-quality and low-cost screen printing plate is provided which can print a target printing pattern accurately and with high transfer performance even for a fine design.