Printed Lenticules for Precise Image Registration
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Solution Overview
Problem
Lenticular printing technologies face challenges with precise registration of individual lenses and interlaced images, leading to alignment issues and 'ghosting' or poor imagery, particularly in single-step and two-step processes.
Innovation Solution
A method and materials for forming a lenticular device where interlaced composite images are created using an imaging device, with semi-cylindrical-shaped convex parts aligned with corresponding interlaced stripes, allowing for precise registration between the lenticular lens sheet and the interlaced composite image, using transparent materials like polymers, toner, or UV curable inks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If individual lenses are precisely aligned with fine stripes of interlaced images, then imaging quality is improved, but manufacturing complexity increases
Solution Approach 1:
A registration pattern comprising machine-readable symbols is introduced as an intermediary element between the interlaced image and the lenticular lens array. This registration pattern serves as a mediator that enables automated optical alignment, allowing the imaging device to precisely position each lenticular lens over corresponding image stripes without complex manual alignment procedures. The machine-readable symbols provide encoded positional information that simplifies the manufacturing process while maintaining high alignment precision.
2Measurement precision
If registration patterns with machine-readable symbols are used, then alignment precision is improved, but device complexity increases
Solution Approach 1:
The registration pattern with machine-readable symbols is printed or formed as a separate layer on the substrate before applying the interlaced image and lenticular lenses. This registration layer acts as a copy or reference framework that contains encoded positional information. The imaging device reads these symbols to determine precise alignment requirements, enabling automated registration without adding significant structural complexity to the final lenticular product. The machine-readable symbols can be easily integrated into existing printing processes.
3Productivity
If automated alignment using machine-readable symbols is implemented, then productivity is improved, but initial setup complexity increases
Solution Approach 1:
The registration pattern with machine-readable symbols is prepared in advance during substrate preparation, before the interlaced image printing and lenticular lens application steps. This preliminary action encodes all necessary alignment information into the registration layer, which then guides the automated alignment process throughout production. The initial setup complexity is concentrated in creating the registration pattern template, but once established, it enables rapid and consistent automated alignment across all subsequent manufacturing cycles, significantly improving productivity.
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 precise registration and improved imagery quality by aligning semi-cylindrical-shaped convex parts with interlaced stripes, reducing alignment errors and enhancing the lenticular effect, allowing different images to be viewed from specific angles without 'ghosting'.
Implementation Method 1
Light is reflected off each stripe and refracted through the lenses in different directions, but with light from all stripes of a given image refracted in the same direction.
Data Source
AI summary
Exemplary embodiments provide materials and methods for lenticular printing devices, wherein both a lenticular lens sheet and an interlaced composite image can be formed using an imaging device to provide a precise registration translated from a color-to-color registration.