Tobacco Material Strip Position Detection Using Recurring Print Patterns
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Solution Overview
Problem
Conventional methods for detecting the position of pre-printed material strips in the tobacco processing industry require additional high-contrast print marks that limit the printable area and necessitate material overlap, restricting flexibility and increasing material usage.
Innovation Solution
A method using a periodically recurring print pattern visible on the finished product for detection, allowing for flexible definition and adaptation of the pattern without additional marks, enabling material savings and unrestricted printing areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional high-contrast print marks are used for detection, then detection precision is improved, but printable area is reduced and material usage increases
Solution Approach 1:
The patent makes the product packaging itself serve dual functions: it acts as both the commercial packaging with advertising content and as the detection target for position monitoring. The periodically recurring print patterns on the packaging are detected by optical sensors to determine material strip position, eliminating the need for separate detection marks and maximizing the printable area for advertising purposes.
Solution Approach 2:
The patent combines the detection function with the commercial packaging design by integrating periodically recurring print patterns into the advertising artwork. These patterns serve both aesthetic/commercial purposes and technical detection purposes, merging two previously separate functions into a single unified solution.
2Measurement precision
If additional high-contrast print marks are used for detection, then detection precision is improved, but material usage increases
Solution Approach 1:
The packaging design serves dual purposes as both commercial advertising medium and detection target. The periodically recurring patterns are printed as part of the normal packaging artwork, eliminating the need for additional detection marks that would consume extra material.
3Reliability
If pre-defined print marks are used for detection, then detection reliability is improved, but adaptability is reduced
Solution Approach 1:
The patent transitions from static, pre-defined detection marks to dynamic, flexible print patterns that can be adapted to different packaging designs. The periodically recurring patterns can be customized for each product and packaging design while maintaining their detection function, allowing the system to adapt to various commercial requirements.
Solution Approach 2:
The detection system is designed to work with any periodically recurring print pattern, making it universally applicable to different packaging designs. The optical sensors and evaluation unit can detect various pattern types, providing both reliability and adaptability.
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 detection and positioning of material strips without additional print marks, allowing for flexible pattern definition and significant material savings while maintaining product aesthetics.
Implementation Method 1
a periodically recurring print pattern on an endlessly processed material strip is detected and recognized by means of an imaging sensor arrangement
Data Source
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AI summary
The method involves detecting and identifying a periodically recurring print pattern on the continuously processed material strip (11) by an imaging sensor arrangement (14), where the position of the material strip is determined relative to the machine cycle. A freely defined pattern is used as the pattern to be identified, which is arranged in the outwardly visible area of the material strip on the finished product. An independent claim is included for a machine of the tobacco processing industry with a camera system.