Bubble Discharging Structure for Reverse Printing Block
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Solution Overview
Problem
Existing reverse offset printing methods face challenges in achieving high-quality printing due to low precision in alignment between the blanket and substrate, and difficulty in full surface tight adherence, leading to issues with bubble entrapment between flat plate-like shapes.
Innovation Solution
A bubble discharging structure is introduced, featuring a substrate with adjacent areas for contact and a bubble discharging path that allows bubbles to be moved from the printing area to a non-printing area, ensuring precise pattern formation by discharging bubbles through this path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a flat plate-like blanket is used for reverse offset printing, then alignment precision between blanket and substrate is improved, but bubble entrapment occurs making full surface tight adherence difficult
Solution Approach 1:
The invention extracts and removes bubbles from the contact interface between the blanket and substrate by providing a bubble discharge path that leads from the contact surface to the external environment. This allows the blanket and substrate to maintain full surface tight adherence while preventing bubble entrapment that would otherwise occur with flat plate-like structures.
Solution Approach 2:
The reverse printing block is designed with a porous structure containing multiple bubble discharge paths that extend from the contact surface to the external environment. This porous structure allows bubbles to escape during the printing process, enabling complete and reliable contact between the blanket and substrate across the entire surface.
2Reliability
If a roll-like blanket is used for reverse offset printing, then tight adherence between blanket and reverse printing block is improved, but alignment precision between blanket and substrate deteriorates
Solution Approach 1:
The invention segments the blanket structure into a flat plate-like blanket and a corresponding reverse printing block with matching flat surfaces. This segmentation allows for precise alignment between the blanket and substrate while maintaining tight adherence through the flat contact interface, resolving the contradiction between adherence and alignment precision.
3Measurement precision
If flat plate-like shapes are used for blanket, reverse printing block, and substrate, then alignment precision is improved, but bubble entrapment occurs
Solution Approach 1:
The invention introduces bubble discharge paths as an intermediary structure within the reverse printing block that mediates between the flat plate-like shapes and the bubble entrapment problem. These paths provide a controlled route for bubbles to escape from the contact interface, allowing flat plate-like structures to maintain their alignment precision advantage while eliminating bubble entrapment.
Data Source
AI summary
Disclosed herein is a bubble discharging structure, including a substrate which has a first area and a second area adjacent to the first area, and on which a counter substrate is caused to come in contact with the first area to provide a film having a first pattern, and a bubble discharging path through which the first area and the second area communicate with each other, and through which a bubble confined between the substrate and the counter substrate when the counter substrate is caused to come in contact with the first area is discharged from the first area to the second area.