Asymmetric Edge Lenticular Lens Sheet for Ink Jet Recording
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Solution Overview
Problem
The existing manufacturing processes for lenticular lens sheets face challenges in achieving precise cutting, leading to imperfect semi-cylindrical shapes at the edges, which result in suboptimal visual effects during ink jet recording due to images being recorded across adjacent lens elements, increasing complexity and cost in cutting apparatuses and lens sheets.
Innovation Solution
A target recording medium is designed with asymmetric edge shapes, where one edge is strictly monitored for cutting precision and the other edge is cut outside the valley between lens elements, allowing for precise alignment during recording without requiring complex monitoring of both edges, thereby reducing costs and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cutting precision is strictly monitored for both edges of the lens sheet, then manufacturing precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent applies asymmetry by making the first edge and second edge of the lens sheet have different characteristics. The first edge is formed by slicing with strict precision monitoring to ensure it aligns with lens element boundaries, while the second edge is intentionally formed outside the valley between lens elements with relaxed precision requirements. This asymmetric design allows the recording apparatus to reliably align using only the first edge as a reference, eliminating the need for complex monitoring systems on both edges while maintaining sufficient manufacturing precision for visual effect quality.
2Manufacturing precision
If cutting precision is strictly monitored for both edges of the lens sheet, then manufacturing precision is improved, but manufacturing cost increases
Solution Approach 1:
The patent reduces manufacturing cost by implementing asymmetric edge design where only the first edge requires strict cutting precision monitoring. The second edge is intentionally positioned outside lens element boundaries with relaxed precision requirements. This approach maintains sufficient manufacturing precision for achieving favorable visual effects while significantly reducing the complexity and cost of the cutting apparatus, as monitoring systems and precision controls are needed for only one edge rather than both.
3Manufacturing precision
If the lens sheet is cut with high precision at both edges, then recording precision is improved, but device complexity increases
Solution Approach 1:
The patent achieves sufficient recording precision through asymmetric edge design where the first edge is precisely sliced to serve as a reliable alignment reference for the recording apparatus. The second edge is intentionally formed with relaxed precision requirements, positioned outside the valley between lens elements. This eliminates the need for complex precision monitoring systems on both edges while maintaining adequate recording precision, as the recording apparatus only needs to align with the first edge to ensure images are correctly positioned on lens elements.
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 enables favorable visual effects by preventing images from being recorded across adjacent lens elements, reducing manufacturing costs and complexity, and ensuring high precision in recording results.
Implementation Method 1
a surface on one side is a lens layer which is configured by a plurality of lenses
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
A lens sheet 80 is provided with a lens layer 83 which is formed by arranging lenses Gk, which extend in a y direction as a first direction, in a plurality of lines in an x direction as a second direction which is a direction which is orthogonal to the first direction, and an ink absorbing layer 86 which configures a surface on the opposite side with regard to a surface which is configured by the lens layer 83, where the thickness of an edge 81A which is an end surface on one side of the lens layer 83 in the x direction is thinner than the thickness of an edge 81B which is an end surface on the other side. In other words, a width W1 of a lens G1 which is formed at the edge 81A is wider than a width W2 of a lens Gn which is formed at the edge 81B.