Magnetic Roller Printing Layout for Multi-Optical-Color Effects
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Solution Overview
Problem
Current printing technologies can only achieve a single optical-color optically variable effect, either scrolling or variation under a single or compound magnetic field, lacking the capability to produce multiple effects simultaneously.
Innovation Solution
A multi-optical-color optically-variable printing device with a conveying unit, screen printing unit, and multiple optical-color optically-variable pattern forming units, utilizing magnetizing rollers and pre-drying and curing devices with different magnetization effects, and an optical mask curing device to project dynamically refreshable variable optical field image-texts, enabling simultaneous formation of multiple optical effects on the printing stock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single magnetic field is used for magnetic orientation, then a single optical-color optically variable effect (scrolling or variation) is achieved, but the capability to produce multiple optical effects simultaneously is limited
Solution Approach 1:
The patent divides the magnetic field generation system into multiple independent magnetic field generation units (first, second, third, and fourth magnetic field generation units), each capable of producing a single magnetic field effect. This segmentation allows each unit to be controlled independently, enabling the combination of multiple magnetic field effects to achieve multi-optical-color optically variable patterns while maintaining manageable device complexity through modular architecture.
Solution Approach 2:
Each magnetic field generation unit is designed with multi-functionality, capable of producing different types of magnetic fields (single magnetic field, compound magnetic field) and different magnetic field directions. The magnetic orientation components can be configured with different magnetization effects (first, second, third, fourth magnetization effects), allowing the same basic structure to achieve multiple optical effects including scrolling, variation, and their combinations, thereby improving versatility without proportionally increasing device complexity.
2Adaptability or versatility
If multiple magnetic field generation units are added to achieve multi-optical-color effects, then optical effect variety is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple magnetic field generation units and their corresponding magnetic orientation components into an integrated printing system with a unified conveying mechanism. The multiple magnetic field generation units are arranged in sequence along the conveying direction, and their effects are combined to produce multi-optical-color optically variable patterns on the same printing stock, achieving functional integration that reduces overall system complexity despite the increased number of components.
Solution Approach 2:
The patent introduces the dimension of spatial arrangement by positioning multiple magnetic field generation units at different locations along the conveying direction and configuring their magnetic field directions differently (first direction, second direction, third direction, fourth direction). This dimensional arrangement allows each unit to contribute a different optical effect (scrolling in one direction, variation in another), enabling multi-optical-color capability while organizing device complexity in a structured spatial framework.
3Productivity
If pre-drying and curing devices are arranged opposite to magnetic orientation components, then pre-drying and curing efficiency is improved, but device structure becomes more complex
Solution Approach 1:
The patent merges the pre-drying and curing function with the magnetic orientation process by arranging pre-drying and curing devices opposite to the magnetic orientation components. This allows simultaneous execution of magnetic orientation and pre-drying/curing operations on the printing stock as it passes through the system, improving productivity by eliminating sequential processing steps while integrating these functions into a compact structural arrangement.
4Adaptability or versatility
If optical mask curing device projects dynamically refreshable variable optical field image-texts, then image-text variability is improved, but synchronization control difficulty increases
Solution Approach 1:
The patent implements feedback control by synchronizing the projection of dynamically refreshable variable optical field image-texts with the conveying speed and position of the printing stock. The system monitors the conveying process and adjusts the projection timing and content accordingly, ensuring that the variable optical field image-texts are projected at the correct positions on the moving printing stock, thereby managing synchronization control difficulty through active feedback mechanisms.
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
Achieves omnidirectional merging of fixed and variable multi-optical-color image-texts, allowing for rolling and motion effects under various magnetic fields, enhancing the complexity and security of printed patterns.
Implementation Method 1
magnetic orientation components are arranged on each magnetizing roller and configured to perform magnetic orientation on the printing stock
Implementation Method 2
the pre-drying and curing device comprises an optical mask curing device, the optical mask curing device is fixedly arranged and configured to project a dynamically refreshable variable optical field image-text
Data Source
AI summary
A multi-optical-color optically-variable printing device having: a conveying unit; a screen printing unit, configured to printing an ink or a varnish containing a magnetic substance on a printing stock; and a plurality of optical-color optically-variable pattern forming units. Each optical-color optically-variable pattern forming unit comprises: magnetizing rollers, magnetic orientation components being arranged on each magnetizing roller and configured to performing magnetic orientation on the printing stock; and pre-drying and curing devices, configured to pre-drying and curing the printing stock, each pre-drying and curing device comprising optical mask curing devices, the optical mask curing device being fixedly arranged and configured to projecting dynamically refreshable variable optical field image-text, and the variable optical field image-text and the printing stock synchronously moving a predetermined distance.